[EXECUTION COPY]


                 AMENDMENT NO. 2 TO CREDIT AGREEMENT AND WAIVER
                                       AND
              AMENDMENT NO. 1 TO BRIDGE CREDIT AGREEMENT AND WAIVER


              AMENDMENT NO. 2 TO CREDIT AGREEMENT AND WAIVER and AMENDMENT NO. 1
TO BRIDGE CREDIT  AGREEMENT AND WAIVER (this  "Amendment")  dated as of July 30,
1996  among  PERINI  CORPORATION  (the  "Borrower"),  the  banks  listed  on the
signature  pages  hereof,  each in its  capacity  as a "Bank"  under the  Credit
Agreement referenced below (collectively,  the "Banks") and in its capacity as a
"Bridge Bank" under the Bridge Credit Agreement  referenced below (collectively,
the "Bridge  Banks"),  and MORGAN  GUARANTY  TRUST COMPANY OF NEW YORK, as Agent
(the "Agent").


                              W I T N E S S E T H :

              WHEREAS,  the  Borrower,  the Banks and the Agent are parties to a
Credit  Agreement  dated as of  December  6, 1994 (as  heretofore  amended,  the
"Credit Agreement");

              WHEREAS, the Borrower,  the Bridge Banks and the Agent are parties
to a Bridge Credit  Agreement  dated as of February 26, 1996 (the "Bridge Credit
Agreement"); and

              WHEREAS,  at the request of the  Borrower,  the Banks,  the Bridge
Banks and the  Agent  have  agreed to amend  certain  provisions  of the  Credit
Agreement and the Bridge Credit Agreement and to waive certain Events of Default
under the Credit Agreement and certain Events of Default under the Bridge Credit
Agreement, in each case under the terms and conditions set forth herein.

              NOW, THEREFORE, the parties hereto agree as follows:

              1. Definitions;  References. Unless otherwise specifically defined
herein,  each term used herein  which is defined in the Credit  Agreement or the
Bridge  Credit  Agreement  shall have the  meaning  assigned to such term in the
Credit  Agreement  or the  Bridge  Credit  Agreement,  as the case may be.  Each
reference to "hereof", "hereunder", "herein" and "hereby" and each other similar
reference  and  each  reference  to "this  Agreement"  and  each  other  similar
reference  contained in the Credit Agreement or the Bridge Credit Agreement,  as
the case may be, shall from and after

27009/007/AMEND.96/amend.2                                              







the date hereof refer to the Credit Agreement or the Bridge Credit Agreement, as
the case may be, as amended hereby.

              2.  Amendment to definition of Bridge Termination
Date.  The definition of "Bridge Termination Date" contained
in Section 1.01 of the Bridge Credit Agreement is amended
and restated in its entirety as follows:

                      "Bridge Termination Date" means September 30, 1996.

              3. Amendment of Debt Covenants  Contained in the Credit  Agreement
and Bridge Credit Agreement. Section 5.08(b) of the Credit Agreement and Section
5.08(b) of the Bridge Credit Agreement are amended, in each case by:

              (a)  renumbering  the existing  clause (v) therein as clause (vi),
and changing the  reference  to "clauses  (i) through  (iv)" in such  renumbered
clause (vi) to "clauses (i) though (v)"; and

              (b) adding a new clause (v) immediately  after clause (iv) therein
as follows:

                      (v)  Debt  of  Perini   Resorts,   Inc.  to  Glenco  Squaw
              Associates,  a California  limited  partnership,  evidenced by the
              promissory  note  dated July 1, 1996,  in the  original  principal
              amount  of  $2,300,000  and  bearing  interest  at 8%,  issued  as
              described in Section 5.15 hereof.

              4. Amendment of Negative Pledge Covenants  Contained in the Credit
Agreement and Bridge Credit Agreement.  Section 5.11 of the Credit Agreement and
Section 5.11 of the Bridge Credit Agreement are amended, in each case by:

              (a) deleting the word "and" after the semi-colon  following clause
(j) thereof; and

              (b) inserting a  semi-colon,  the word "and" and the following new
clause (l) immediately before the final period thereof:

                      (l) Liens granted by Perini Resorts,  Inc. to Glenco Squaw
              Associates  in the proceeds of its right to receive  distributions
              from   Glenco-Perini-   HCV   Partners,   a   California   limited
              partnership,  as its distributive  share of principal and interest
              payments on the "GPH Loan", which Liens have been granted pursuant
              to a Security Agreement dated

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                                        2





              July 1, 1996 and which Liens  secure the Debt  described in clause
              (v) of Section 5.08(b).

              5.  Amendment of  Covenants  Restricting  Real Estate  Investments
Contained in the Credit Agreement and Bridge Credit  Agreement.  Section 5.15 of
the Credit  Agreement  and  Section  5.15 of the  Bridge  Credit  Agreement  are
amended,  in each case, by inserting a semi-colon  and the following  proviso at
the end of the first sentence thereof:

     provided  that in  addition  to Real Estate  Investments  permitted  by the
     foregoing  formula,  Perini  Resorts,  Inc. may purchase  from Glenco Squaw
     Associates  its  40%  limited  partnership  interest  in  Glenco-Perini-HCV
     Partners, a California limited partnership, for a purchase price consisting
     of a $700,000 cash payment and a $2,300,000  promissory  note,  pursuant to
     the Agreement for  Assignment of Limited  Partnership  Interest dated as of
     June 27, 1996.

              6. Waiver of Certain Events of Default. The Banks hereby waive the
Events of Default arising under Sections 5.01(f),  5.08(b),  5.11, 5.15 and 5.16
of the Credit  Agreement and the Bridge Banks hereby waive the Events of Default
arising  under  Sections  5.01(f),  5.08(b),  5.11,  5.15 and 5.16 of the Bridge
Credit  Agreement  which  arose  prior  to  the  date  hereof  due to any of the
following:

              (a) Perini Resorts,  Inc.'s  incurring the Debt described above in
Section 3 of this Amendment;

              (b) Perini  Resorts,  Inc.'s granting the Liens described above in
Section 4 of this Amendment;

              (c)  Perini  Resorts,  Inc.'s  making the Real  Estate  Investment
described above in Section 5 of this Amendment; and

              (d) the  Borrower's  failing to deliver  notice of such  Events of
Defaults (and related Defaults).

              7.  Agreement to Provide  Business  Plan.  The Borrower  agrees to
provide to each Bank and to each Bridge Bank,  by no later than August 31, 1996,
an operating plan and financial forecast detailing the projected  operations and
financial  performance  for  the  Borrower  and  its  Consolidated  Subsidiaries
(including a breakdown for each operating  division)  through December 31, 1998,
in a form  acceptable to the Required  Banks under the Credit  Agreement and the
Required Banks under the Bridge Credit Agreement.


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                                        3





              8. Extension Fee. The Borrower agrees to pay to the Agent, for the
account of each Bridge Bank (other  than Morgan  Guaranty  Trust  Company of New
York ("Morgan")) in proportion to its Bridge Commitment,  an extension fee equal
to 1.00% of the excess of the aggregate  amount of all Bridge  Commitments  over
the amount of Morgan's Bridge Commitment.

              9.   Representations  and  Warranties  Correct;  No  Default.  The
Borrower represents and warrants that on and as of the date hereof, after giving
effect to this Amendment, (a) the representations and warranties of each Obligor
contained in each  Financing  Document,  as amended,  to which it is a party are
true and (b) no Default  under the  Credit  Agreement  and no Default  under the
Bridge Credit Agreement exists.

              10.  Effect of  Amendments  and Waivers.  Except as expressly  set
forth herein,  the amendments and waivers  contained herein shall not constitute
an amendment or waiver of any term or  condition  of the Credit  Agreement,  the
Bridge Credit Agreement or any other Financing Documents, and all such terms and
conditions  shall  remain in full force and effect and are hereby  ratified  and
confirmed in all respects.

              11.  Governing  Law.  This  Amendment  shall  be  governed  by and
construed in accordance with the laws of the State of New York.

              12.  Counterparts.  This  Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

              13. Effectiveness. This Amendment shall become effective as of the
date hereof when the following conditions shall have been satisfied:

              (a) the Agent  shall  have  received  duly  executed  counterparts
hereof  signed by the  Borrower,  the  Required  Banks (as defined in the Credit
Agreement),  the Required Banks (as defined in Bridge Credit Agreement) and each
Subsidiary  Guarantor  (or,  in the case of any  party  as to which an  executed
counterpart  shall  not have  been  received,  the  Agent  shall  have  received
telegraphic, telex or other written confirmation from such party of execution of
a counterpart hereof by such party);

              (b) the Agent shall have received, for the account of each Lender,
the extension fee required to be paid under Section 8 of this Amendment;


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                                        4





              (c) the Borrower  shall have paid all amounts which it is required
to pay pursuant to Section  9.03 of the Credit  Agreement or Section 8.03 of the
Bridge Credit Agreement,  and for which a statement shall have been delivered to
the Borrower and the Agent on or prior to July 30, 1996;

              (d) the Agent shall have received a copy of the resolutions of the
Board of Directors of the Borrower and each Subsidiary Guarantor authorizing the
execution, delivery and performance of this Amendment,  satisfactory in form and
substance to the Agent; and

              (e) the Agent shall have  received a copy of the  certificates  of
the  Secretary  or an Assistant  Secretary  of the Borrower and each  Subsidiary
Guarantor  certifying  the  names and true  signatures  of the  officers  of the
Borrower and each  Subsidiary  Guarantor  who shall be  authorized  to sign this
Amendment, satisfactory in form and substance to the Agent.


              IN WITNESS WHEREOF,  the parties hereto have caused this Amendment
to be duly executed by their respective authorized officers as of the date first
above written.


                                        PERINI CORPORATION


                                        By:      _____________________________
                                                 Name:
                                                 Title:


                                        By:      _____________________________
                                                 Name:
                                                 Title:

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                                        5







                                        Each  of the  undersigned  banks  is
                                        signing  this  Amendment  No.  2  to
                                        Credit   Agreement  and  Waiver  and
                                        Amendment  No.  1 to  Bridge  Credit
                                        Agreement and Waiver in its capacity
                                        as  a  "Bank"   under   the   Credit
                                        Agreement  referenced above and as a
                                        "Bridge   Bank"   under  the  Bridge
                                        Credit Agreement referenced above:

                                        MORGAN GUARANTY TRUST COMPANY
                                           OF NEW YORK


                                        By:      _____________________________
                                                 Name:
                                                 Title:



                                        FLEET NATIONAL BANK OF MASSACHUSETTS
                                          (f/k/a SHAWMUT BANK, N.A.)


                                        By:      _____________________________
                                                 Name:
                                                 Title:



                                        BANK OF AMERICA NATIONAL TRUST AND
                                          SAVINGS ASSOCIATION



                                        By:      _____________________________
                                                 Name:
                                                 Title:



                                        BAYBANK, N.A.,


                                        By:      _____________________________
                                                 Name:
                                                 Title:



27009/007/AMEND.96/amend.2                                            


                                                  6






                                        COMERICA BANK


                                        By:      _____________________________
                                                 Name:
                                                 Title:



                                        HARRIS TRUST & SAVINGS BANK


                                        By:      _____________________________
                                                 Name:
                                                 Title:



                                        STATE STREET BANK AND TRUST COMPANY


                                        By:      _____________________________
                                                 Name:
                                                 Title:



                                        MORGAN GUARANTY TRUST COMPANY
                                          OF NEW YORK, as Agent


                                        By:      _____________________________
                                                 Name:
                                                 Title:




Each of the undersigned Subsidiary Guaras
consents to the foregoing Amendment:



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                                        7





PERINI BUILDING COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI INTERNATIONAL CORPORATION


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI LAND AND DEVELOPMENT COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



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                                        8






R. E. DAILEY & CO.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PARAMOUNT DEVELOPMENT ASSOCIATES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI ENVIRONMENTAL SERVICES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:




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                                        9




PERINI RESORTS, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



27009/007/AMEND.96/amend.2                                           


                                       10




                                                        [EXECUTION COPY]


                   AMENDMENT NO. 2 TO BRIDGE CREDIT AGREEMENT
                                AND WAIVERS UNDER
                  CREDIT AGREEMENT AND BRIDGE CREDIT AGREEMENT


              AMENDMENT  NO. 2 TO BRIDGE  CREDIT  AGREEMENT  AND  WAIVERS  UNDER
CREDIT  AGREEMENT AND BRIDGE CREDIT  AGREEMENT  (this  "Amendment")  dated as of
September 30, 1996 among PERINI  CORPORATION (the "Borrower"),  the banks listed
on the signature pages hereof, each in its capacity as a "Bank" under the Credit
Agreement referenced below
(collectively,  the "Banks")  and in its  capacity as a "Bridge  Bank" under the
Bridge Credit Agreement referenced below (collectively, the "Bridge Banks"), and
MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as Agent (the "Agent").


                              W I T N E S S E T H :

              WHEREAS,  the  Borrower,  the Banks and the Agent are parties to a
Credit  Agreement  dated as of  December  6, 1994 (as  heretofore  amended,  the
"Credit Agreement");

              WHEREAS, the Borrower,  the Bridge Banks and the Agent are parties
to a Bridge Credit  Agreement  dated as of February 26, 1996 (the "Bridge Credit
Agreement"); and

              WHEREAS,  at the request of the  Borrower,  the Banks,  the Bridge
Banks and the Agent have agreed to amend the  definition of "Bridge  Termination
Date" in the Bridge  Credit  Agreement  and to waive  certain  Events of Default
under the Credit Agreement and certain Events of Default under the Bridge Credit
Agreement, in each case under the terms and conditions set forth herein.

              NOW, THEREFORE, the parties hereto agree as follows:

              1. Definitions;  References. Unless otherwise specifically defined
herein,  each term used herein  which is defined in the Credit  Agreement or the
Bridge  Credit  Agreement  shall have the  meaning  assigned to such term in the
Credit  Agreement  or the  Bridge  Credit  Agreement,  as the case may be.  Each
reference to "hereof", "hereunder", "herein" and "hereby" and each other similar
reference  and  each  reference  to "this  Agreement"  and  each  other  similar
reference contained in the

27009/007/AMEND.96/bridge.amend.2







Credit Agreement or the Bridge Credit Agreement,  as the case may be, shall from
and after the date hereof  refer to the Credit  Agreement  or the Bridge  Credit
Agreement, as the case may be, as amended hereby.

              2.  Amendment to definition of Bridge Termination Date.  The
definition of "Bridge Termination Date" contained in Section 1.01 of the Bridge
Credit Agreement is amended and restated in its entirety as follows:

              "Bridge  Termination  Date" means the date that is the earliest to
occur of the following:

                      (a)      October 2, 1996;

                      (b) the date, if any, when (i) the Stock Purchase and Sale
              Agreement   dated  as  of  July  24,  1996  (the  "Stock  Purchase
              Agreement") among Richard C. Blum & Associates,  L.P. ("RCBA"), PB
              Capital  Partners,  L.P. (the  "Purchaser") and the Borrower shall
              terminate or (ii) RCBA or the Purchaser  shall  otherwise take any
              action,  or fail to take any  action,  which  action or failure to
              take any  action  indicates  an  intention  not to make at least a
              $30,000,000  equity  investment in the Borrower in accordance with
              the Stock Purchase Agreement; and

                      (c) the date,  if any, when the Bridge  Commitments  shall
              terminate  and the Bridge Notes shall become  immediately  due and
              payable pursuant to Section 6.01 of the Bridge Credit Agreement.

              3. Waiver of Certain Events of Default. Solely for the period from
the date  hereof  until the Bridge  Termination  Date,  the Banks and the Bridge
Banks hereby waive (i) the Defaults (including notice thereof) arising under the
Credit  Agreement and the Bridge Credit Agreement solely as a result of the fact
that the cumulative amount of Net Real Estate  Investments since January 1, 1996
shall  exceed the  limitations  thereon  contained in Section 5.15 of the Credit
Agreement  and  Section  5.15  of the  Bridge  Credit  Agreement  and  (ii)  the
conditions to borrowing set forth in Section 3.02(c) of the Credit Agreement and
Section  3.02(c) of the Bridge  Credit  Agreement  solely  with  respect to such
Defaults.

              4.   Representations  and  Warranties  Correct;  No  Default.  The
Borrower represents and warrants that on and as of the date hereof, after giving
effect to this Amendment, (a) the representations and warranties of each Obligor
contained in each  Financing  Document,  as amended,  to which it is a party are
true and (b) no Default  under the  Credit  Agreement  and no Default  under the
Bridge Credit Agreement exists.


27009/007/AMEND.96/bridge.amend.2


                                        2





              5. Effect of Amendments and Waivers. Except as expressly set forth
herein,  the  amendments  and waivers  contained  herein shall not constitute an
amendment or waiver of any term or condition of the Credit Agreement, the Bridge
Credit  Agreement  or any  other  Financing  Documents,  and all such  terms and
conditions  shall  remain in full force and effect and are hereby  ratified  and
confirmed in all respects.

              6.  Governing Law.  This Amendment shall be governed by and
construed in accordance with the laws of the State of New York.

              7.  Counterparts.  This Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

              8. Effectiveness.  This Amendment shall become effective as of the
date hereof when the following conditions shall have been satisfied:

              (a) the Agent  shall  have  received  duly  executed  counterparts
     hereof signed by the Borrower,  each of the Banks and Bridge Banks and each
     Subsidiary  Guarantor (or, in the case of any party as to which an executed
     counterpart  shall not have been  received,  the Agent shall have  received
     telegraphic,  telex  or  other  written  confirmation  from  such  party of
     execution of a counterpart hereof by such party);

              (b) the Borrower  shall have paid all amounts which it is required
     to pay pursuant to Section 9.03 of the Credit  Agreement or Section 8.03 of
     the Bridge  Credit  Agreement,  and for which a  statement  shall have been
     delivered to the Borrower and the Agent on or prior to September  27, 1996;
     and

              (e) the Agent shall have received a copy of the resolutions of the
     Board of Directors of the Borrower authorizing the execution,  delivery and
     performance  of the Stock  Purchase  Agreement  and  approving  a  proposed
     restructuring of the Borrower's  obligations under the Credit Agreement and
     Bridge Credit  Agreement in accordance with the draft "Summary of Terms and
     Conditions" dated September 26, 1996.



27009/007/AMEND.96/bridge.amend.2


                                        3





              IN WITNESS WHEREOF,  the parties hereto have caused this Amendment
to be duly executed by their respective authorized officers as of the date first
above written.


                                        PERINI CORPORATION


                                        By:      _____________________________
                                                 Name:
                                                 Title:


                                        By:      _____________________________
                                                 Name:
                                                 Title:


                                            Each  of the  undersigned  banks  is
                                            signing  this  Amendment  No.  2  to
                                            Bridge Credit  Agreement and Waivers
                                            Under  Credit  Agreement  and Bridge
                                            Credit  Agreement in its capacity as
                                            a "Bank" under the Credit  Agreement
                                            referenced  above  and as a  "Bridge
                                            Bank"   under  the   Bridge   Credit
                                            Agreement referenced above:

                                            MORGAN GUARANTY TRUST COMPANY OF
                                            NEW YORK


                                            By:      ___________________________
                                                     Name:
                                                     Title:



                                            FLEET  NATIONAL  BANK  (f/k/a  FLEET
                                            NATIONAL   BANK  OF   MASSACHUSETTS,
                                            N.A.; f/k/a SHAWMUT BANK, N.A.)


                                            By:      ___________________________
                                                     Name:
                                                     Title:

27009/007/AMEND.96/bridge.amend.2


                                        4






                                      FLEET NATIONAL BANK (f/k/a FLEET
                                      NATIONAL BANK OF MASSACHUSETTS, N.A.)


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      BANK OF AMERICA NATIONAL TRUST AND
                                      SAVINGS ASSOCIATION


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      THE FIRST NATIONAL BANK OF BOSTON


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      COMERICA BANK


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      HARRIS TRUST & SAVINGS BANK


                                      By:      _____________________________
                                               Name:
                                               Title:

27009/007/AMEND.96/bridge.amend.2


                                        5








                                      STATE STREET BANK AND TRUST COMPANY


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      MORGAN GUARANTY TRUST COMPANY OF
                                      NEW YORK, as Agent


                                      By:      _____________________________
                                               Name:
                                               Title:


Each of the undersigned Subsidiary Guarantors
consents to the foregoing Amendment:

PERINI BUILDING COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:




27009/007/AMEND.96/bridge.amend.2


                                        6





PERINI INTERNATIONAL CORPORATION


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI LAND AND DEVELOPMENT COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



R. E. DAILEY & CO.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:




27009/007/AMEND.96/bridge.amend.2


                                        7




PARAMOUNT DEVELOPMENT ASSOCIATES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI ENVIRONMENTAL SERVICES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI RESORTS, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:


27009/007/AMEND.96/bridge.amend.2


                                        8




                                                              [EXECUTION COPY]


                   AMENDMENT NO. 3 TO BRIDGE CREDIT AGREEMENT
                                AND WAIVERS UNDER
                  CREDIT AGREEMENT AND BRIDGE CREDIT AGREEMENT


              AMENDMENT  NO. 3 TO BRIDGE  CREDIT  AGREEMENT  AND  WAIVERS  UNDER
CREDIT  AGREEMENT AND BRIDGE CREDIT  AGREEMENT  (this  "Amendment")  dated as of
October 2, 1996 among PERINI  CORPORATION (the "Borrower"),  the banks listed on
the signature  pages  hereof,  each in its capacity as a "Bank" under the Credit
Agreement referenced below
(collectively,  the "Banks")  and in its  capacity as a "Bridge  Bank" under the
Bridge Credit Agreement referenced below (collectively, the "Bridge Banks"), and
MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as Agent (the "Agent").


                              W I T N E S S E T H :

              WHEREAS,  the  Borrower,  the Banks and the Agent are parties to a
Credit  Agreement  dated as of  December  6, 1994 (as  heretofore  amended,  the
"Credit Agreement");

              WHEREAS, the Borrower,  the Bridge Banks and the Agent are parties
to a Bridge Credit  Agreement  dated as of February 26, 1996 (the "Bridge Credit
Agreement"); and

              WHEREAS,  at the request of the  Borrower,  the Banks,  the Bridge
Banks and the Agent have agreed to amend the  definition of "Bridge  Termination
Date" in the Bridge  Credit  Agreement  and to waive  certain  Events of Default
under the Credit Agreement and certain Events of Default under the Bridge Credit
Agreement, in each case under the terms and conditions set forth herein.

              NOW, THEREFORE, the parties hereto agree as follows:

              1. Definitions;  References. Unless otherwise specifically defined
herein,  each term used herein  which is defined in the Credit  Agreement or the
Bridge  Credit  Agreement  shall have the  meaning  assigned to such term in the
Credit  Agreement  or the  Bridge  Credit  Agreement,  as the case may be.  Each
reference to "hereof", "hereunder", "herein" and "hereby" and each other similar
reference  and  each  reference  to "this  Agreement"  and  each  other  similar
reference contained in the

27009/007/AMEND.96/amend.3         







Credit Agreement or the Bridge Credit Agreement,  as the case may be, shall from
and after the date hereof  refer to the Credit  Agreement  or the Bridge  Credit
Agreement, as the case may be, as amended hereby.

              2.  Amendment to definition of Bridge Termination Date.  The
definition of "Bridge Termination Date" contained in Section 1.01 of the Bridge
Credit Agreement is amended and restated in its entirety as follows:

              "Bridge  Termination  Date" means the date that is the earliest to
occur of the following:

                      (a)      November 22, 1996;

                      (b) the date, if any, when (i) the Stock Purchase and Sale
              Agreement   dated  as  of  July  24,  1996  (the  "Stock  Purchase
              Agreement") among Richard C. Blum & Associates,  L.P. ("RCBA"), PB
              Capital  Partners,  L.P. (the  "Purchaser") and the Borrower shall
              terminate or (ii) RCBA or the Purchaser  shall  otherwise take any
              action,  or fail to take any  action,  which  action or failure to
              take any  action  indicates  an  intention  not to make at least a
              $30,000,000  equity  investment in the Borrower in accordance with
              the Stock Purchase Agreement;

                      (c)  October 15,  1996,  unless on or before such date the
              Agent shall have received a letter from RCBA stating that RCBA and
              the  Purchaser  have  completed  their  review  and due  diligence
              investigations with respect to the business, operations,  affairs,
              prospects, properties, assets, existing and potential liabilities,
              obligations, profits and condition (financial or otherwise) of the
              Borrower  and its  Subsidiaries  and  that  each  of RCBA  and the
              Purchaser is fully satisfied with the results thereof;

                      (d)  November  1,  1996,  unless on or before  such date a
              proxy statement  soliciting  consents from the shareholders of the
              Borrower to the sale of shares of Series B Cumulative  Convertible
              Preferred  Stock to the  Purchaser  in  accordance  with the Stock
              Purchase Agreement shall have been sent to such  shareholders,  in
              compliance with the Securities Exchange Act of 1934, the rules and
              regulations promulgated thereunder and other applicable law;

                      (e) the date, if any, when the aggregate cumulative amount
              of Real  Estate  Investments  made at any time  during  the period
              beginning  October 1, 1996 and  ending on such date  shall  exceed
              $1,500,000; and


27009/007/AMEND.96/amend.3                                     [EXECUTION COPY]


                                        2





                      (f) the date,  if any, when the Bridge  Commitments  shall
              terminate  and the Bridge Notes shall become  immediately  due and
              payable pursuant to Section 6.01 of the Bridge Credit Agreement.

              3. Waiver of Certain  Events of Default.  Subject to clause (e) of
the definition of "Bridge  Termination  Date" as modified by paragraph 2 of this
Amendment,  solely  for the  period  from  the  date  hereof  until  the  Bridge
Termination  Date,  the Banks and the Bridge Banks hereby waive (i) the Defaults
(including  notice  thereof)  arising under the Credit  Agreement and the Bridge
Credit  Agreement  solely as a result of the fact that the cumulative  amount of
Net Real Estate  Investments  since January 1, 1996 shall exceed the limitations
thereon  contained in Section 5.15 of the Credit  Agreement  and Section 5.15 of
the Bridge Credit  Agreement  and (ii) the  conditions to borrowing set forth in
Section 3.02(c) of the Credit Agreement and Section 3.02(c) of the Bridge Credit
Agreement solely with respect to such Defaults.

              4.   Representations  and  Warranties  Correct;  No  Default.  The
Borrower represents and warrants that on and as of the date hereof, after giving
effect to this Amendment, (a) the representations and warranties of each Obligor
contained in each  Financing  Document,  as amended,  to which it is a party are
true and (b) no Default  under the  Credit  Agreement  and no Default  under the
Bridge Credit Agreement exists.

              5. Effect of Amendments and Waivers. Except as expressly set forth
herein,  the  amendments  and waivers  contained  herein shall not constitute an
amendment or waiver of any term or condition of the Credit Agreement, the Bridge
Credit  Agreement  or any  other  Financing  Documents,  and all such  terms and
conditions  shall  remain in full force and effect and are hereby  ratified  and
confirmed in all respects.

              6.  Governing Law.  This Amendment shall be governed by and
construed in accordance with the laws of the State of New York.

              7.  Counterparts.  This Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

              8. Effectiveness.  This Amendment shall become effective as of the
date hereof when the following conditions shall have been satisfied:

              (a) the Agent  shall  have  received  duly  executed  counterparts
     hereof signed by the Borrower,  each of the Banks and Bridge Banks and each
     Subsidiary  Guarantor (or, in the case of any party as to which an executed
     counterpart shall not have been received, the Agent shall have received

27009/007/AMEND.96/amend.3            
                                        3





     telegraphic,  telex or other written  confirmation from such party
     of execution of a counterpart hereof by such party);

              (b) the Borrower  shall have paid all amounts which it is required
     to pay pursuant to Section 9.03 of the Credit  Agreement or Section 8.03 of
     the Bridge  Credit  Agreement,  and for which a  statement  shall have been
     delivered to the Borrower and the Agent on or prior to September 27, 1996;

              (c) the Agent shall have received a copy of the resolutions of the
     Board  of  Directors  of  the  Borrower  and  each   Subsidiary   Guarantor
     authorizing  the execution,  delivery and  performance  of this  Amendment,
     satisfactory in form and substance to the Agent;

              (d) the Agent shall have  received a copy of the  certificates  of
     the Secretary or an Assistant Secretary of the Borrower and each Subsidiary
     Guarantor  certifying the names and true  signatures of the officers of the
     Borrower and each Subsidiary Guarantor who shall be authorized to sign this
     Amendment, satisfactory in form and substance to the Agent; and

              (e) the Agent shall have received a copy of the resolutions of the
     Board of Directors of the Borrower authorizing the execution,  delivery and
     performance  of the Stock  Purchase  Agreement  and  approving  a  proposed
     restructuring of the Borrower's  obligations under the Credit Agreement and
     Bridge Credit  Agreement in accordance with the draft "Summary of Terms and
     Conditions" dated September 26, 1996.


              IN WITNESS WHEREOF,  the parties hereto have caused this Amendment
to be duly executed by their respective authorized officers as of the date first
above written.


                                        PERINI CORPORATION


                                        By:      _____________________________
                                                 Name:
                                                 Title:


                                        By:      _____________________________
                                                 Name:
                                                 Title:

27009/007/AMEND.96/amend.3            
                                       4






                                      Each  of the  undersigned  banks  is
                                      signing  this  Amendment  No.  3  to
                                      Bridge Credit  Agreement and Waivers
                                      Under  Credit  Agreement  and Bridge
                                      Credit  Agreement in its capacity as
                                      a "Bank" under the Credit  Agreement
                                      referenced  above  and as a  "Bridge
                                      Bank"   under  the   Bridge   Credit
                                      Agreement referenced above:

                                      MORGAN GUARANTY TRUST COMPANY OF
                                      NEW YORK


                                      By:      _____________________________
                                               Name:
                                               Title:


                                      FLEET  NATIONAL  BANK  (f/k/a  FLEET
                                      NATIONAL   BANK  OF   MASSACHUSETTS,
                                      N.A.; f/k/a SHAWMUT BANK, N.A.)


                                      By:      _____________________________
                                               Name:
                                               Title:


                                      FLEET NATIONAL BANK (f/k/a FLEET
                                      NATIONAL BANK OF MASSACHUSETTS, N.A.)


                                      By:      _____________________________
                                               Name:
                                               Title:


                                      BANK OF AMERICA NATIONAL TRUST AND
                                      SAVINGS ASSOCIATION


                                      By:      _____________________________
                                               Name:
                                               Title:


27009/007/AMEND.96/amend.3                                      


                                        5







                                      THE FIRST NATIONAL BANK OF BOSTON


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      COMERICA BANK


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      HARRIS TRUST & SAVINGS BANK


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      STATE STREET BANK AND TRUST COMPANY


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      MORGAN GUARANTY TRUST COMPANY OF
                                      NEW YORK, as Agent


                                      By:      _____________________________
                                               Name:
                                               Title:

27009/007/AMEND.96/amend.3                      


                                        6







Each of the undersigned Subsidiary Guarantors
consents to the foregoing Amendment:

PERINI BUILDING COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI INTERNATIONAL CORPORATION


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI LAND AND DEVELOPMENT COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:


27009/007/AMEND.96/amend.3                      
                                        7







R. E. DAILEY & CO.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PARAMOUNT DEVELOPMENT ASSOCIATES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI ENVIRONMENTAL SERVICES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:




27009/007/AMEND.96/amend.3                      

                                        8

PERINI RESORTS, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:


27009/007/AMEND.96/amend.3      
                                        9




                                                              [EXECUTION COPY]



                   AMENDMENT NO. 4 TO BRIDGE CREDIT AGREEMENT


              AMENDMENT  NO. 4 TO BRIDGE  CREDIT  AGREEMENT  (this  "Amendment")
dated as of October 15, 1996 among  PERINI  CORPORATION  (the  "Borrower"),  the
banks listed on the signature  pages hereof  (collectively,  the "Bridge Banks")
and MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as Agent (the "Agent").


                              W I T N E S S E T H :

              WHEREAS, the Borrower,  the Bridge Banks and the Agent are parties
to a Bridge  Credit  Agreement  dated as of February 26, 1996 (as  amended,  the
"Bridge Credit Agreement"); and

              WHEREAS, at the request of the Borrower,  the Bridge Banks and the
Agent have agreed to amend the  definition of "Bridge  Termination  Date" in the
Bridge Credit Agreement as set forth herein.

              NOW, THEREFORE, the parties hereto agree as follows:

              1. Definitions;  References. Unless otherwise specifically defined
herein,  each term used herein which is defined in the Bridge  Credit  Agreement
shall have the meaning assigned to such term in the Bridge Credit Agreement,  as
the case may be. Each reference to "hereof", "hereunder",  "herein" and "hereby"
and each other similar reference and each reference to "this Agreement" and each
other similar reference  contained in the Bridge Credit Agreement shall from and
after the date hereof refer to the Bridge Credit Agreement as amended hereby.

              2. Amendment to definition of Bridge  Termination Date. Clause (c)
of the definition of "Bridge  Termination Date" contained in Section 1.01 of the
Bridge Credit Agreement is amended by changing the date referred to therein from
"October 15, 1996" to "October 21, 1996".

              3.   Representations  and  Warranties  Correct;  No  Default.  The
Borrower represents and warrants that on and as of the date hereof, after giving
effect to this Amendment, (a) the representations and warranties of each Obligor
contained in each  Financing  Document,  as amended,  to which it is a party are
true and (b) no

27009/007/AMEND.96/amend.4                  






Default  under the  Credit  Agreement  and no Default  under the  Bridge  Credit
Agreement exists.

              4. Effect of Amendment.  Except as expressly set forth herein, the
amendments  and waivers  contained  herein shall not  constitute an amendment or
waiver of any term or  condition  of the Credit  Agreement,  the  Bridge  Credit
Agreement or any other  Financing  Documents,  and all such terms and conditions
shall remain in full force and effect and are hereby  ratified and  confirmed in
all respects.

              5.  Governing Law.  This Amendment shall be governed by and
construed in accordance with the laws of the State of New York.

              6.  Counterparts.  This Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

              7. Effectiveness.  This Amendment shall become effective as of the
date hereof when the Agent shall have received duly executed counterparts hereof
signed by the Borrower,  each of the Bridge Banks and each Subsidiary  Guarantor
(or, in the case of any party as to which an executed counterpart shall not have
been received, the Agent shall have received telegraphic, telex or other written
confirmation  from  such  party of  execution  of a  counterpart  hereof by such
party).


              IN WITNESS WHEREOF,  the parties hereto have caused this Amendment
to be duly executed by their respective authorized officers as of the date first
above written.


                                        PERINI CORPORATION


                                        By:      _____________________________
                                                 Name:
                                                 Title:


                                        By:      _____________________________
                                                 Name:
                                                 Title:

27009/007/AMEND.96/amend.4       

                                        2







                                  MORGAN GUARANTY TRUST COMPANY OF
                                  NEW YORK


                                  By:      _____________________________
                                           Name:
                                           Title:


                                  FLEET NATIONAL BANK


                                  By:      _____________________________
                                           Name:
                                           Title:



                                  BANK OF AMERICA NATIONAL TRUST AND
                                  SAVINGS ASSOCIATION


                                  By:      _____________________________
                                           Name:
                                           Title:



                                  BAYBANK, N.A.


                                  By:      _____________________________
                                           Name:
                                           Title:



27009/007/AMEND.96/amend.4                         


                                            3






                                  COMERICA BANK


                                  By:      _____________________________
                                           Name:
                                           Title:



                                  HARRIS TRUST & SAVINGS BANK


                                  By:      _____________________________
                                           Name:
                                           Title:



                                  STATE STREET BANK AND TRUST COMPANY


                                  By:      _____________________________
                                           Name:
                                           Title:



                                  MORGAN GUARANTY TRUST COMPANY OF
                                  NEW YORK, as Agent


                                  By:      _____________________________
                                           Name:
                                           Title:



27009/007/AMEND.96/amend.4                         


                                        4





Each of the undersigned Subsidiary Guarantors
consents to the foregoing Amendment:

PERINI BUILDING COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI INTERNATIONAL CORPORATION


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI LAND AND DEVELOPMENT COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



27009/007/AMEND.96/amend.4        


                                        5






R. E. DAILEY & CO.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PARAMOUNT DEVELOPMENT ASSOCIATES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI ENVIRONMENTAL SERVICES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:




27009/007/AMEND.96/amend.4   


                                        6




PERINI RESORTS, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:


27009/007/AMEND.96/amend.4      


                                        7




                                                           [EXECUTION COPY]



                   AMENDMENT NO. 5 TO BRIDGE CREDIT AGREEMENT


              AMENDMENT  NO. 5 TO BRIDGE  CREDIT  AGREEMENT  (this  "Amendment")
dated as of October 21, 1996 among  PERINI  CORPORATION  (the  "Borrower"),  the
banks listed on the signature  pages hereof  (collectively,  the "Bridge Banks")
and MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as Agent (the "Agent").


                              W I T N E S S E T H :

              WHEREAS, the Borrower,  the Bridge Banks and the Agent are parties
to a Bridge  Credit  Agreement  dated as of February 26, 1996 (as  amended,  the
"Bridge Credit Agreement"); and

              WHEREAS, at the request of the Borrower,  the Bridge Banks and the
Agent have agreed to amend the  definition of "Bridge  Termination  Date" in the
Bridge Credit Agreement as set forth herein.

              NOW, THEREFORE, the parties hereto agree as follows:

              1. Definitions;  References. Unless otherwise specifically defined
herein,  each term used herein which is defined in the Bridge  Credit  Agreement
shall have the meaning assigned to such term in the Bridge Credit Agreement,  as
the case may be. Each reference to "hereof", "hereunder",  "herein" and "hereby"
and each other similar reference and each reference to "this Agreement" and each
other similar reference  contained in the Bridge Credit Agreement shall from and
after the date hereof refer to the Bridge Credit Agreement as amended hereby.

              2. Amendment to definition of Bridge  Termination Date. Clause (c)
of the definition of "Bridge  Termination Date" contained in Section 1.01 of the
Bridge Credit Agreement is amended by changing the date referred to therein from
"October 21, 1996" to "October 24, 1996".

              3.   Representations  and  Warranties  Correct;  No  Default.  The
Borrower represents and warrants that on and as of the date hereof, after giving
effect to this Amendment, (a) the representations and warranties of each Obligor
contained in each  Financing  Document,  as amended,  to which it is a party are
true and (b) no

27009/007/AMEND.96/amend.5







Default  under the  Credit  Agreement  and no Default  under the  Bridge  Credit
Agreement exists.

              4. Effect of Amendment.  Except as expressly set forth herein, the
amendments  and waivers  contained  herein shall not  constitute an amendment or
waiver of any term or  condition  of the Credit  Agreement,  the  Bridge  Credit
Agreement or any other  Financing  Documents,  and all such terms and conditions
shall remain in full force and effect and are hereby  ratified and  confirmed in
all respects.

              5.  Governing Law.  This Amendment shall be governed by and
construed in accordance with the laws of the State of New York.

              6.  Counterparts.  This Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

              7. Effectiveness.  This Amendment shall become effective as of the
date hereof when the Agent shall have received duly executed counterparts hereof
signed by the Borrower,  each of the Bridge Banks and each Subsidiary  Guarantor
(or, in the case of any party as to which an executed counterpart shall not have
been received, the Agent shall have received telegraphic, telex or other written
confirmation  from  such  party of  execution  of a  counterpart  hereof by such
party).


              IN WITNESS WHEREOF,  the parties hereto have caused this Amendment
to be duly executed by their respective authorized officers as of the date first
above written.


                                        PERINI CORPORATION


                                        By:      _____________________________
                                                 Name:
                                                 Title:


                                        By:      _____________________________
                                                 Name:
                                                 Title:

27009/007/AMEND.96/amend.5         


                                        2







                                      MORGAN GUARANTY TRUST COMPANY OF
                                      NEW YORK


                                      By:      _____________________________
                                               Name:
                                               Title:


                                      FLEET NATIONAL BANK


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      BANK OF AMERICA NATIONAL TRUST AND
                                      SAVINGS ASSOCIATION


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      BAYBANK, N.A.


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      COMERICA BANK


                                      By:      _____________________________
                                               Name:
                                               Title:

27009/007/AMEND.96/amend.5             


                                        3








                                      HARRIS TRUST & SAVINGS BANK


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      STATE STREET BANK AND TRUST COMPANY


                                      By:      _____________________________
                                               Name:
                                               Title:



                                      MORGAN GUARANTY TRUST COMPANY OF
                                      NEW YORK, as Agent


                                      By:      _____________________________
                                               Name:
                                               Title:


Each of the undersigned Subsidiary Guarantors
consents to the foregoing Amendment:

PERINI BUILDING COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:


27009/007/AMEND.96/amend.5             


                                        4







PERINI INTERNATIONAL CORPORATION


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI LAND AND DEVELOPMENT COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



R. E. DAILEY & CO.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:




27009/007/AMEND.96/amend.5   


                                        5




PARAMOUNT DEVELOPMENT ASSOCIATES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI ENVIRONMENTAL SERVICES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI RESORTS, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:


27009/007/AMEND.96/amend.5       

                                        6




                                                              [EXECUTION COPY]



                   AMENDMENT NO. 6 TO BRIDGE CREDIT AGREEMENT


              AMENDMENT  NO. 6 TO BRIDGE  CREDIT  AGREEMENT  (this  "Amendment")
dated as of October 24, 1996 among  PERINI  CORPORATION  (the  "Borrower"),  the
banks listed on the signature  pages hereof  (collectively,  the "Bridge Banks")
and MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as Agent (the "Agent").


                              W I T N E S S E T H :

              WHEREAS, the Borrower,  the Bridge Banks and the Agent are parties
to a Bridge  Credit  Agreement  dated as of February 26, 1996 (as  amended,  the
"Bridge Credit Agreement"); and

              WHEREAS, at the request of the Borrower,  the Bridge Banks and the
Agent have agreed to amend the  definition of "Bridge  Termination  Date" in the
Bridge Credit Agreement as set forth herein.

              NOW, THEREFORE, the parties hereto agree as follows:

              1. Definitions;  References. Unless otherwise specifically defined
herein,  each term used herein which is defined in the Bridge  Credit  Agreement
shall have the meaning assigned to such term in the Bridge Credit Agreement,  as
the case may be. Each reference to "hereof", "hereunder",  "herein" and "hereby"
and each other similar reference and each reference to "this Agreement" and each
other similar reference  contained in the Bridge Credit Agreement shall from and
after the date hereof refer to the Bridge Credit Agreement as amended hereby.

              2. Amendment to definition of Bridge  Termination Date. Clause (c)
of the definition of "Bridge  Termination Date" contained in Section 1.01 of the
Bridge Credit Agreement is amended by changing the date referred to therein from
"October 24, 1996" to "October 29, 1996".

              3.   Representations  and  Warranties  Correct;  No  Default.  The
Borrower represents and warrants that on and as of the date hereof, after giving
effect to this Amendment, (a) the representations and warranties of each Obligor
contained in each  Financing  Document,  as amended,  to which it is a party are
true and (b) no

27009/007/AMEND.96/amend.6                              







Default  under the  Credit  Agreement  and no Default  under the  Bridge  Credit
Agreement exists.

              4. Effect of Amendment.  Except as expressly set forth herein, the
amendments  and waivers  contained  herein shall not  constitute an amendment or
waiver of any term or  condition  of the Credit  Agreement,  the  Bridge  Credit
Agreement or any other  Financing  Documents,  and all such terms and conditions
shall remain in full force and effect and are hereby  ratified and  confirmed in
all respects.

              5.  Governing Law.  This Amendment shall be governed by and
construed in accordance with the laws of the State of New York.

              6.  Counterparts.  This Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

              7. Effectiveness.  This Amendment shall become effective as of the
date hereof when the Agent shall have received duly executed counterparts hereof
signed by the Borrower,  each of the Bridge Banks and each Subsidiary  Guarantor
(or, in the case of any party as to which an executed counterpart shall not have
been received, the Agent shall have received telegraphic, telex or other written
confirmation  from  such  party of  execution  of a  counterpart  hereof by such
party).


              IN WITNESS WHEREOF,  the parties hereto have caused this Amendment
to be duly executed by their respective authorized officers as of the date first
above written.


                                        PERINI CORPORATION


                                        By:      _____________________________
                                                 Name:
                                                 Title:


                                        By:      _____________________________
                                                 Name:
                                                 Title:

27009/007/AMEND.96/amend.6           


                                        2







                                    MORGAN GUARANTY TRUST COMPANY OF
                                    NEW YORK


                                    By:      _____________________________
                                             Name:
                                             Title:


                                    FLEET NATIONAL BANK


                                    By:      _____________________________
                                             Name:
                                             Title:



                                    BANK OF AMERICA NATIONAL TRUST AND
                                    SAVINGS ASSOCIATION


                                    By:      _____________________________
                                             Name:
                                             Title:



                                    BAYBANK, N.A.


                                    By:      _____________________________
                                             Name:
                                             Title:



                                    COMERICA BANK


                                    By:      _____________________________
                                             Name:
                                             Title:

27009/007/AMEND.96/amend.6                                      


                                        3








                                    HARRIS TRUST & SAVINGS BANK


                                    By:      _____________________________
                                             Name:
                                             Title:



                                    STATE STREET BANK AND TRUST COMPANY


                                    By:      _____________________________
                                             Name:
                                             Title:



                                    MORGAN GUARANTY TRUST COMPANY OF
                                    NEW YORK, as Agent


                                    By:      _____________________________
                                             Name:
                                             Title:


Each of the undersigned Subsidiary Guarantors
consents to the foregoing Amendment:

PERINI BUILDING COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:


27009/007/AMEND.96/amend.6                                               


                                        4







PERINI INTERNATIONAL CORPORATION


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI LAND AND DEVELOPMENT COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



R. E. DAILEY & CO.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:




27009/007/AMEND.96/amend.6                                                


                                        5




PARAMOUNT DEVELOPMENT ASSOCIATES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI ENVIRONMENTAL SERVICES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI RESORTS, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:


27009/007/AMEND.96/amend.6                                                


                                        6


                                                              [EXECUTION COPY]



                   AMENDMENT NO. 7 TO BRIDGE CREDIT AGREEMENT


              AMENDMENT  NO. 7 TO BRIDGE  CREDIT  AGREEMENT  (this  "Amendment")
dated as of November 1, 1996 among  PERINI  CORPORATION  (the  "Borrower"),  the
banks listed on the signature  pages hereof  (collectively,  the "Bridge Banks")
and MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as Agent (the "Agent").


                              W I T N E S S E T H :

              WHEREAS, the Borrower,  the Bridge Banks and the Agent are parties
to a Bridge  Credit  Agreement  dated as of February 26, 1996 (as  amended,  the
"Bridge Credit Agreement"); and

              WHEREAS, at the request of the Borrower,  the Bridge Banks and the
Agent have agreed to amend the  definition of "Bridge  Termination  Date" in the
Bridge Credit Agreement as set forth herein.

              NOW, THEREFORE, the parties hereto agree as follows:

              1. Definitions;  References. Unless otherwise specifically defined
herein,  each term used herein which is defined in the Bridge  Credit  Agreement
shall have the meaning assigned to such term in the Bridge Credit Agreement,  as
the case may be. Each reference to "hereof", "hereunder",  "herein" and "hereby"
and each other similar reference and each reference to "this Agreement" and each
other similar reference  contained in the Bridge Credit Agreement shall from and
after the date hereof refer to the Bridge Credit Agreement as amended hereby.

              2. Amendment to definition of Bridge  Termination Date. Clause (d)
of the definition of "Bridge  Termination Date" contained in Section 1.01 of the
Bridge Credit Agreement is amended by changing the date referred to therein from
"November 1, 1996" to "November 6, 1996".

              3.   Representations  and  Warranties  Correct;  No  Default.  The
Borrower represents and warrants that on and as of the date hereof, after giving
effect to this Amendment, (a) the representations and warranties of each Obligor
contained in each  Financing  Document,  as amended,  to which it is a party are
true and (b) no

27009/007/AMEND.96/amend.7  






Default  under the  Credit  Agreement  and no Default  under the  Bridge  Credit
Agreement exists.

              4. Effect of Amendment.  Except as expressly set forth herein, the
amendments  and waivers  contained  herein shall not  constitute an amendment or
waiver of any term or  condition  of the Credit  Agreement,  the  Bridge  Credit
Agreement or any other  Financing  Documents,  and all such terms and conditions
shall remain in full force and effect and are hereby  ratified and  confirmed in
all respects.

              5.  Governing Law.  This Amendment shall be governed by and
construed in accordance with the laws of the State of New York.

              6.  Counterparts.  This Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

              7. Effectiveness.  This Amendment shall become effective as of the
date hereof when the Agent shall have received duly executed counterparts hereof
signed by the Borrower,  each of the Bridge Banks and each Subsidiary  Guarantor
(or, in the case of any party as to which an executed counterpart shall not have
been received, the Agent shall have received telegraphic, telex or other written
confirmation  from  such  party of  execution  of a  counterpart  hereof by such
party).


              IN WITNESS WHEREOF,  the parties hereto have caused this Amendment
to be duly executed by their respective authorized officers as of the date first
above written.


                                        PERINI CORPORATION


                                        By:      _____________________________
                                                 Name:
                                                 Title:


                                        By:      _____________________________
                                                 Name:
                                                 Title:

27009/007/AMEND.96/amend.7                                                  


                                        2







                                  MORGAN GUARANTY TRUST COMPANY OF
                                  NEW YORK


                                  By:      _____________________________
                                           Name:
                                           Title:


                                  FLEET NATIONAL BANK


                                  By:      _____________________________
                                           Name:
                                           Title:



                                  BANK OF AMERICA NATIONAL TRUST AND
                                  SAVINGS ASSOCIATION


                                  By:      _____________________________
                                           Name:
                                           Title:



                                  BAYBANK, N.A.


                                  By:      _____________________________
                                           Name:
                                           Title:



                                  COMERICA BANK


                                  By:      _____________________________
                                           Name:
                                           Title:

27009/007/AMEND.96/amend.7                                                 


                                        3








                                  HARRIS TRUST & SAVINGS BANK


                                  By:      _____________________________
                                           Name:
                                           Title:



                                  STATE STREET BANK AND TRUST COMPANY


                                  By:      _____________________________
                                           Name:
                                           Title:



                                  MORGAN GUARANTY TRUST COMPANY OF
                                  NEW YORK, as Agent


                                  By:      _____________________________
                                           Name:
                                           Title:


Each of the undersigned Subsidiary Guarantors
consents to the foregoing Amendment:

PERINI BUILDING COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:


27009/007/AMEND.96/amend.7                                                 


                                        4







PERINI INTERNATIONAL CORPORATION


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI LAND AND DEVELOPMENT COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



R. E. DAILEY & CO.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:




27009/007/AMEND.96/amend.7                                                  


                                        5




PARAMOUNT DEVELOPMENT ASSOCIATES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI ENVIRONMENTAL SERVICES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI RESORTS, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:


27009/007/AMEND.96/amend.7                                                  


                                        6




                                                              [EXECUTION COPY]



                   AMENDMENT NO. 8 TO BRIDGE CREDIT AGREEMENT
                                       AND
                       AMENDMENT NO. 3 TO CREDIT AGREEMENT


              AMENDMENT NO. 8 TO BRIDGE CREDIT AGREEMENT AND
AMENDMENT NO. 3 TO CREDIT AGREEMENT (this "Amendment") dated as of
November 4, 1996 among PERINI CORPORATION (the "Borrower"), the banks
listed on the signature pages hereof, each in its capacity as a "Bank" under the
Credit  Agreement  referenced  below  (collectively,  the  "Banks")  and  in its
capacity as a "Bridge Bank" under the Bridge Credit  Agreement  referenced below
(collectively,  the "Bridge  Banks"),  and MORGAN  GUARANTY TRUST COMPANY OF NEW
YORK, as Agent (the "Agent").


                              W I T N E S S E T H :

              WHEREAS, the Borrower,  the Bridge Banks and the Agent are parties
to a Bridge  Credit  Agreement  dated as of February 26, 1996 (as  amended,  the
"Bridge Credit Agreement");

              WHEREAS,  the  Borrower,  the Banks and the Agent are parties to a
Credit  Agreement  dated  as of  December  6,  1994  (as  amended,  the  "Credit
Agreement"); and

              WHEREAS,  at the  request of the  Borrower,  certain of the Bridge
Banks  have  agreed  to  increase  their  respective  Bridge  Commitments  by an
aggregate $10,000,000, and all of the Bridge Banks, the Banks and the Agent have
agreed to amend certain  provisions  of the Bridge  Credit  Agreement and Credit
Agreement as set forth  herein,  subject to the terms and  conditions  set forth
herein;

              NOW, THEREFORE, the parties hereto agree as follows:


              SECTION 1. Definitions;  References. Unless otherwise specifically
defined herein,  each term used herein which is defined in the Credit  Agreement
or the Bridge Credit  Agreement shall have the meaning  assigned to such term in
the Credit  Agreement or the Bridge Credit  Agreement,  as the case may be. Each
reference to "hereof", "hereunder", "herein" and "hereby" and each other similar
reference and

27009/007/AMEND.96/amend.8                                             







each reference to "this Agreement" and each other similar reference contained in
the Credit Agreement or Bridge Credit Agreement,  as the case may be, shall from
and after the date hereof refer to the Bridge Credit Agreement,  as the case may
be, as amended hereby.


              SECTION 2. Amendments to Definitions. The definitions of the terms
"Available  Bridge LC  Amount,"  "Bridge  Commitment,"  "Bridge  Loan,"  "Bridge
Termination  Date" and "Interest Period" contained in Section 1.01 of the Bridge
Credit  Agreement are amended and restated in their entireties by the respective
definitions  for such terms as set forth  below,  and Section 1.01 of the Bridge
Credit  Agreement is further amended by inserting,  in appropriate  alphabetical
order, the additional definitions set forth below:

                      "Amendment No. 8 Effective Date" means the date when
     Amendment No. 8 to Bridge Credit Agreement and Amendment No. 3 to
     Credit Agreement shall become effective in accordance with its terms.

                      "Available Bridge LC Amount" means, at any time, zero.

                      "Bridge  Commitment"  means,  with  respect to each Bridge
     Bank,  the  aggregate   amount  of  such  Bridge  Bank's  Bridge  Revolving
     Commitment and Bridge Term  Commitment,  as set forth below, as such amount
     may be reduced from time to time pursuant to Section 2.09 or Section 2.10:

                                      Bridge         Bridge   
                                     Revolving        Term        Bridge
  Bridge Banks                      Commitment     Commitment   Commitment
  ------------                      ----------     ----------   ----------
  Morgan Guaranty Trust
        Company of New York         $3,096,000     $2,464,000   $5,560,000
  Fleet National Bank                5,280,000      3,520,000    8,800,000
  Bank of America National Trust
        and Savings Association      2,184,000      1,456,000    3,640,000
  BayBank, N.A.                      1,440,000        960,000    2,400,000
  Comerica Bank                      1,200,000        800,000    2,000,000
  Harris Trust & Savings Bank        1,200,000        800,000    2,000,000
  State Street Bank and Trust 
        Company                        600,000          - 0 -      600,000
                                  ------------ -------------- ------------
        Totals                     $15,000,000    $10,000,000  $25,000,000


                           "Bridge  Loan"  means a Bridge  Term  Loan  made by a
         Bridge Bank pursuant to Section 2.01(a) or a Bridge Revolving Loan made
         by a Bridge  Bank  pursuant  to Section  2.01(b),  as the  context  may
         require.

                           "Bridge Revolving  Commitment" means, with respect to
         each  Bridge  Bank,  the amount  set forth  under the  heading  "Bridge
         Revolving

27009/007/AMEND.96/amend.8                                              


                                        2





         Commitment"  opposite the name of such Bridge Bank in the definition of
         "Bridge  Commitment,"  as such amount may be reduced  from time to time
         pursuant to Section 2.09 or 2.10.

                           "Bridge Revolving Loan" has the meaning set forth in 
         Section 2.01(b).

                           "Bridge Term Commitment"  means, with respect to each
         Bridge  Bank,  the  amount set forth  under the  heading  "Bridge  Term
         Commitment"  opposite the name of such Bridge Bank in the definition of
         "Bridge  Commitment,"  as such amount may be reduced  from time to time
         pursuant to Section 2.09 or 2.10.

                           "Bridge Term Loan" has the meaning set forth in 
         Section 2.01(a).

                           "Bridge Termination Date" means the date that is 
         the earliest to occur of the following:

                           (a)      January 31, 1997;

                           (b)      the date, if any, when the Closing 
         (as defined in the Stock Purchase Agreement) shall occur;

                           (c) the date,  if any,  when the  Bridge  Commitments
                  shall terminate and the Bridge Notes shall become  immediately
                  due and payable  pursuant to Section 6.01 of the Bridge Credit
                  Agreement or when the Commitments  under the Credit  Agreement
                  shall terminate and the Notes issued  thereunder  shall become
                  immediately  due and payable  pursuant to Section  6.01 of the
                  Credit Agreement.

                           "Interest  Period"  means with respect to each Bridge
         Borrowing,  the period  commencing on the date of such Bridge Borrowing
         and ending on the Bridge Termination Date.

                           "Participation  Agreement"  means  the  Participation
         Agreement  dated as of  November  4, 1996 among the Bridge  Banks,  the
         Purchaser and the Agent, substantially in the form of Exhibit A.

                           "Purchaser" means PB Capital Partners, L.P.

                           "RCBA" means Richard C. Blum & Associates, L.P.


27009/007/AMEND.96/amend.8                              


                                        3





                           "Stock Purchase  Agreement"  means the Stock Purchase
         and Sale Agreement  dated as of July 24, 1996 among RCBA, the Purchaser
         and the  Borrower,  as amended by letter  agreements  dated  August 21,
         1996,  September  16,  1996 and  September  30,  1996 and by the Second
         Amendment to Stock  Purchase  Agreement  dated as of a date on or about
         November 4, 1996.


                  SECTION 3.  Amendments to Provisions  for Making Bridge Loans.
Section  2.01 of the Bridge  Credit  Agreement  is amended  and  restated in its
entirety as follows:

                           SECTION 2.01.  The Bridge Loans.

                           (a) On the  Amendment  No.  8  Effective  Date,  each
         Bridge  Bank with a Bridge Term  Commitment  severally  agrees,  on the
         terms and conditions set forth in this Agreement, to make a single loan
         to  the  Borrower  in a  principal  amount  equal  to its  Bridge  Term
         Commitment  on such date (each such loan, a "Bridge  Term  Loan").  The
         Bridge Term Loans are not  revolving  in nature and any amounts of such
         Bridge Term Loans repaid or prepaid may not be reborrowed.

                           (b) From time to time  prior to the  Amendment  No. 8
         Effective  Date,  each  Bridge  Bank  has made  loans  to the  Borrower
         pursuant to Section  2.01 of this  Agreement  as in effect prior to the
         Amendment  No. 8  Effective  Date.  From  time to time on and after the
         Amendment  No. 8  Effective  Date but prior to the  Bridge  Termination
         Date,  each Bridge Bank severally  agrees,  on the terms and conditions
         set forth in this  Agreement,  to make loans to the Borrower (each such
         loan  and  each  other  loan  made  pursuant  to  Section  2.01 of this
         Agreement  prior to the  Amendment  No. 8  Effective  Date,  a  "Bridge
         Revolving Loan") in amounts such that the outstanding  principal amount
         of such Bridge Bank's Bridge  Revolving Loans shall not exceed,  in the
         aggregate at any time, the amount of its Bridge  Revolving  Commitment.
         Each  Bridge  Borrowing  under  this  Section  2.01(b)  shall  be in an
         aggregate  principal  amount of $500,000 or any larger multiple thereof
         (except that any such Bridge  Borrowing may be in the aggregate  amount
         of the unused Bridge  Revolving  Commitments)  and shall be made by the
         several Bridge Banks ratably in proportion to their  respective  Bridge
         Revolving  Commitments.  Within the foregoing limits,  the Borrower may
         borrow under this Section 2.01(b), repay, or to the extent permitted by
         Section  2.10 or  Section  2.11,  prepay  Bridge  Revolving  Loans  and
         reborrow  under  this  Section  2.01(b) at any time prior to the Bridge
         Termination Date.



27009/007/AMEND.96/amend.8                                                


                                        4





                  SECTION 4.  Amendments to Interest Rate Provisions.  Section
2.05 of the Bridge Credit Agreement is amended and restated in its entirety as
follows:

                           SECTION 2.05.  Interest Rates. Each Bridge Loan shall
         bear interest on the outstanding principal amount thereof, for each day
         from the date such Bridge Loan is made until it becomes  due, at a rate
         per annum equal to the sum of the Base Rate for such day plus (i) 4% in
         the case of any Bridge Term Loan,  or (ii) 2% in the case of any Bridge
         Revolving  Loan.  Interest on all Bridge  Loans shall be payable on the
         last Business Day of each month and on the Bridge Termination Date. Any
         overdue  principal  of or  interest  on  any  Bridge  Loan  shall  bear
         interest,  payable  on  demand,  for each day until  paid at a rate per
         annum equal to the sum of 2% plus the rate otherwise applicable to such
         Bridge Loan for such day.


                  SECTION 5. Amendments to Provisions for Mandatory  Termination
or Reduction of Bridge  Commitments.  Subsections (c) and (d) of Section 2.10 of
the Bridge  Credit  Agreement  are  amended and  restated  in their  entirety as
follows:

                           (c) Any reduction in the Bridge Commitments  pursuant
         to Section  2.10(b)  shall be applied  first to reduce the Bridge  Term
         Commitments  and,  when the  Bridge  Term  Commitments  shall have been
         reduced to zero, then to reduce the Bridge  Revolving  Commitments.  On
         each day on which  any  Bridge  Commitments  are  reduced  pursuant  to
         Section 2.10(b), the Borrower shall repay such principal amount of each
         Bridge Bank's  outstanding Bridge Loans (together with accrued interest
         thereon)  as may be  necessary  so that after such  repayment:  (i) the
         aggregate  unpaid  principal  amount of such Bridge  Bank's Bridge Term
         Loans shall not exceed the amount of its Bridge Term  Commitment  after
         giving effect to such reduction and (ii) the aggregate unpaid principal
         amount of such Bridge  Bank's Bridge  Revolving  Loans shall not exceed
         the amount of its Bridge  Revolving  Commitment  after giving effect to
         such reduction.

                           (d) Any  reduction  of the  Bridge  Term  Commitments
         pursuant  to this  Section  2.10  shall be applied to reduce the Bridge
         Term Commitments pro rata among the Bridge Banks in proportion to their
         respective  Bridge Term  Commitments at that time, and any reduction of
         the Bridge Revolving Commitments pursuant to this Section 2.10 shall be
         applied to reduce the Bridge  Revolving  Commitments pro rata among the
         Bridge  Banks  in  proportion  to  their  respective  Bridge  Revolving
         Commitments at that time.


27009/007/AMEND.96/amend.8                                                   


                                        5






                  SECTION 6.  Amendment to  Conditions  for Credit  Events.  The
condition contained in clause (b) of Section 3.02 of the Bridge Credit Agreement
is amended and restated in its entirety as follows:

                  (b) the fact that,  after giving  effect to such Credit Event,
the Usage shall not exceed the aggregate amount of the Bridge Commitments;


                  SECTION  7.  Amendment  to Real  Estate  Investment  Covenant.
Section  5.15 of the Bridge  Credit  Agreement  and  Section  5.15 of the Credit
Agreement, in each case, is amended and restated in its entirety as follows:

                           SECTION 5.15. Real Estate  Investments.  The Borrower
         will not, and will not permit any Consolidated  Subsidiary to, make any
         Real Estate Investment at any time if, after giving effect thereto, (i)
         the aggregate  cumulative amount of Real Estate Investments made during
         any  period set forth  below  shall  exceed the amount set forth  below
         opposite  such  period  (in each  case,  with Real  Estate  Investments
         determined  on a gross basis and not, for example,  net of any proceeds
         received in respect of any Real Estate Investments):

                                                      Maximum Amount of
                Period                             Real Estate Investments
                ------                             -----------------------

          10/1/96 - 11/22/96                            $1,500,000
          1/1/96  - 12/31/96                           $12,000,000
          1/1/97  - 1/31/97                             $2,000,000


                  SECTION 8. Amendments to Event of Default Provisions.  Section
6.01 of the Bridge  Credit  Agreement is amended by deleting the word "or" after
clause (m) therein and by adding the word "or" and the following new clauses (o)
and (p) after clause (n) therein:

                  (o) the Stock Purchase  Agreement shall terminate,  or RCBA or
         the  Purchaser  shall  otherwise  take any action,  or fail to take any
         action,  which  action  or  failure  to take any  action  indicates  an
         intention not to make at least a $30,000,000  equity  investment in the
         Borrower in accordance with the Stock Purchase Agreement; or

                  (p) the Borrower shall fail to send to its  shareholders on or
         prior to November  15, 1996 a proxy  statement  soliciting  shareholder
         consent  to the  sale of  shares  of  Series B  Cumulative  Convertible
         Preferred  Stock to the Purchaser in accordance with the Stock Purchase
         Agreement,  in compliance with the Securities Exchange Act of 1934, the
         rules and regulations

27009/007/AMEND.96/amend.8                    


                                        6





         promulgated thereunder, the rules and regulations promulgated by the
         American Stock Exchange, and other applicable laws;


                  SECTION 9.  Amendment to Expense Provisions.  Section 8.03 of
the Bridge Credit Agreement is amended by adding the following new subsection 
(d):

                  (d) The Borrower shall pay (or, at the  Participant's  option,
         reimburse  the  Participant  for paying) the  reasonable  out-of-pocket
         expenses incurred by the Purchaser, including fees and disbursements of
         counsel, that are directly attributable to the participation granted to
         it pursuant to the  Participation  Agreement (it being  understood that
         that the  Purchaser  shall not be entitled to payment or  reimbursement
         hereunder for expenses otherwise  incurred by the Purchaser,  including
         in connection with the Stock Purchase Agreement).  All such payments or
         reimbursements shall be made in immediately  available funds (i) on the
         Amendment No. 8 Effective  Date, to the extent invoices with respect to
         such expenses have been submitted to the Borrower at least one Business
         Day before the  Amendment  No. 8  Effective  Date,  and (ii) within ten
         Business Days after submission of invoices with respect to expenses not
         paid or reimbursed on the Amendment No. 8 Effective Date.


                  SECTION 10.  Amendment to Participation and Assignment
Provisions.

                  (a) Section 8.06 of the Bridge Credit  Agreement is amended by
adding a new subsection (e) at the end thereof:

                           (e) In  addition  to  having  the  right  to  grant a
         participation  in its Bridge  Commitment and Bridge Loans in accordance
         with  Section  8.06(b),  each  Bridge  Bank may  grant a  participating
         interest in its Bridge Term Loans to the Purchaser in  accordance  with
         the Participation  Agreement. In addition to having the right to assign
         all of its rights and  obligations  under this Agreement and the Bridge
         Notes in accordance with Section  8.06(c),  each Bridge Bank may assign
         all or any portion of its rights and  obligations  under this Agreement
         in respect of its Bridge Term  Commitment and Bridge Terms Loans to any
         other Bridge Bank, subject to the Participation if then in effect. Such
         assignment  shall be made  pursuant  to an  Assignment  and  Assumption
         Agreement substantially in the form of Exhibit K hereto executed by the
         applicable  transferee  Bridge Bank or transferee  Bridge Banks and the
         transferor  Bridge  Bank  or  transferor  Bridge  Banks,   without  any
         requirement  for consent by the Borrower or the Agent.  Upon  execution
         and delivery of the Assignment and Assumption  Agreement and payment by
         the transferee Bridge

27009/007/AMEND.96/amend.8                                                  


                                        7





         Bank or  transferee  Bridge  Banks  to the  transferor  Bridge  Bank or
         transferor Bridge Banks of an amount equal to the purchase price agreed
         between them,  the  transferor  Bridge Bank or transferor  Bridge Banks
         shall be released  from its  obligations  hereunder to a  corresponding
         extent,  the  transferee  Bridge Bank or transferee  Bridge Banks shall
         assume such  obligations  and no further consent or action by any party
         shall be required.


                  SECTION  11.   Representations   and  Warranties  Correct;  No
Default. The Borrower represents and warrants that on and as of the date hereof,
after giving effect to this Amendment, (a) the representations and warranties of
each Obligor contained in each Financing Document,  as amended, to which it is a
party are true and (b) no  Default  under the  Credit  Agreement  and no Default
under the Bridge Credit Agreement exists.


                  SECTION 12.  Effect of  Amendments.  Except as  expressly  set
forth herein,  the amendments and waivers  contained herein shall not constitute
an amendment or waiver of any term or  condition  of the Credit  Agreement,  the
Bridge Credit Agreement or any other Financing Documents, and all such terms and
conditions  shall  remain in full force and effect and are hereby  ratified  and
confirmed in all respects.


                  SECTION 13.  Governing Law.  This Amendment shall be governed
by and construed in accordance with the laws of the State of New York.


                  SECTION 14. Counterparts.  This Amendment may be signed in any
number of counterparts, each of which shall be an original, with the same effect
as if the signatures thereto and hereto were upon the same instrument.


                  SECTION 15. Consent by Subsidiary Guarantors.  By signing this
Amendment below,  each Subsidiary  Guarantor  affirms its obligations  under the
Subsidiary  Guarantee  Agreement and  acknowledges  that it has guaranteed,  and
continues to guarantee,  all obligations of the Borrower in respect of principal
of and  interest  on all  Bridge  Loans and on all Loans  outstanding  under the
Credit  Agreement,  and all other amounts  payable by the Borrower in respect of
the Bridge Notes, the Bridge Credit Agreement, the Notes issued under the Credit
Agreement  and the Credit  Agreement,  in each case as amended to and  including
this  Amendment  and as the same may be  amended  from  time to time  hereafter.
Without  limiting the effect of the foregoing,  the Borrower and each Subsidiary
Guarantor  acknowledges and agrees that the term "Guaranteed  Obligations" under
the Subsidiary Guarantee

27009/007/AMEND.96/amend.8                                              


                                        8





Agreement  includes,  without  limitation,  all  obligations  of the Borrower in
respect of principal of and interest on, and all other amounts payable under the
Bridge  Credit  Agreement  in  respect  of,  the  Bridge  Term  Loans and Bridge
Revolving Loans and all principal and interest on, and all other amounts payable
under the Credit  Agreement in respect of the Loans  outstanding  thereunder (in
each case, including,  without limitation,  any interest which accrues after the
commencement of any case, proceeding or other action relating to the bankruptcy,
insolvency or reorganization  of any Obligor,  or which would accrue but for the
commencement of such case, proceeding or other action, whether or not allowed or
allowable as a claim in any such proceeding).


                  SECTION  16.   Effectiveness.   This  Amendment  shall  become
effective as of the date hereof when the  following  conditions  shall have been
satisfied:

                  (a) the Agent shall have received  duly executed  counterparts
         hereof signed by the  Borrower,  each of the Banks and Bridge Banks and
         each Subsidiary  Guarantor (or, in the case of any party as to which an
         executed counterpart shall not have been received, the Agent shall have
         received  telegraphic,  telex or other written  confirmation  from such
         party of execution of a counterpart hereof by such party);

                  (b) the Agent shall have received evidence  satisfactory to it
         that the Second  Amendment to Stock Purchase  Agreement among RCBA, the
         Purchaser  and the  Borrower  shall have been  executed  by each of the
         parties  thereto,  and that such  Second  Amendment  to Stock  Purchase
         Agreement  shall be in form  and  substance  acceptable  to each of the
         Banks;

                  (c) the Borrower shall have paid all amounts which it shall be
required to pay pursuant to Section 9.03 of the Credit Agreement or Section 8.03
of the  Bridge  Credit  Agreement,  and for which a  statement  shall  have been
delivered  to the  Borrower and the Agent at least one Business Day prior to the
Amendment No. 8 Effective Date;

                  (d) the Agent shall have received a copy of the resolutions of
         the Board of Directors of the  Borrower and each  Subsidiary  Guarantor
         authorizing the execution,  delivery and performance of this Amendment,
         satisfactory in form and substance to the Agent;

                  (e) the Agent shall have  received a copy of the  certificates
         of the  Secretary  or an  Assistant  Secretary of the Borrower and each
         Subsidiary  Guarantor  certifying the names and true  signatures of the
         officers of the Borrower  and each  Subsidiary  Guarantor  who shall be
         authorized to sign this  Amendment,  satisfactory in form and substance
         to the Agent;

27009/007/AMEND.96/amend.8                                                


                                        9






                  (f) the Participation Agreement shall have become effective in
         accordance with its terms, including the fact that the Agent shall have
         received the purchase price payable thereunder; and

                  (g) the Agent shall have received evidence  satisfactory to it
         that  arrangements  satisfactory  to it shall  have  been  made for the
         recording of an amendment to the  Mortgage  encumbering  the  Mortgaged
         Facility in Wayne County, Michigan,  substantially in the form attached
         hereto as Exhibit B, and receipt by the Agent of an endorsement to each
         title  insurance  policy  delivered to the Agent pursuant to the Bridge
         Credit  Agreement  insuring  that the  coverage  under  such  policy is
         unaffected by this Amendment and such amendment to the Mortgage.


                  IN WITNESS  WHEREOF,  the  parties  hereto  have  caused  this
Amendment to be duly executed by their respective  authorized officers as of the
date first above written.

                               PERINI CORPORATION


                                By:      _____________________________
                                         Name:
                                         Title:


                                By:      _____________________________
                                         Name:
                                         Title:

                                Each  of the  undersigned  banks  is
                                signing   this   Amendment   in  its
                                capacity  as  a  "Bank"   under  the
                                Credit  Agreement  referenced  above
                                and as a  "Bridge  Bank"  under  the
                                Bridge Credit Agreement
                                referenced above:

                                MORGAN GUARANTY TRUST COMPANY OF
                                NEW YORK


                                By:      _____________________________
                                         Name:
                                         Title:


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                                            10






                               FLEET NATIONAL BANK


                               By:      _____________________________
                                        Name:
                                        Title:



                               BANK OF AMERICA NATIONAL TRUST AND
                               SAVINGS ASSOCIATION


                               By:      _____________________________
                                        Name:
                                        Title:



                                BAYBANK, N.A.


                                By:      _____________________________
                                         Name:
                                         Title:



                                COMERICA BANK


                                By:      _____________________________
                                         Name:
                                         Title:



                                HARRIS TRUST & SAVINGS BANK


                                By:      _____________________________
                                         Name:
                                         Title:


27009/007/AMEND.96/amend.8                                               


                                       11







                                  STATE STREET BANK AND TRUST COMPANY


                                  By:      _____________________________
                                           Name:
                                           Title:



                                  MORGAN GUARANTY TRUST COMPANY OF
                                  NEW YORK, as Agent


                                  By:      _____________________________
                                           Name:
                                           Title:


Each  of  the  undersigned  Subsidiary  Guarantors  consents  to  the  foregoing
Amendment and confirms its agreement with Section 15 of the Amendment:

PERINI BUILDING COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:




27009/007/AMEND.96/amend.8                                         


                                       12





PERINI INTERNATIONAL CORPORATION


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI LAND AND DEVELOPMENT COMPANY, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



R. E. DAILEY & CO.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:




27009/007/AMEND.96/amend.8                                                  


                                       13




PARAMOUNT DEVELOPMENT ASSOCIATES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI ENVIRONMENTAL SERVICES, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



PERINI RESORTS, INC.


By:      _____________________________
         Name:
         Title:


By:      _____________________________
         Name:
         Title:



27009/007/AMEND.96/amend.8                                               


                                       14




                                                               [EXECUTION COPY]

                   AMENDMENT NO. 9 TO BRIDGE CREDIT AGREEMENT
                                       AND
                       AMENDMENT NO. 4 TO CREDIT AGREEMENT


         AMENDMENT  NO. 9 TO BRIDGE  CREDIT  AGREEMENT  AND  AMENDMENT  NO. 4 TO
CREDIT AGREEMENT (this  "Amendment")  dated as of November 12, 1996 among PERINI
CORPORATION  (the  "Borrower"),  the banks listed on the signature pages hereof,
each in its capacity as a "Bank"  under the Credit  Agreement  referenced  below
(collectively,  the "Banks")  and in its  capacity as a "Bridge  Bank" under the
Bridge Credit Agreement referenced below (collectively, the "Bridge Banks"), and
MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as Agent (the "Agent").

                                   WITNESSETH:

         WHEREAS, the Borrower,  the Bridge Banks and the Agent are parties to a
Bridge Credit  Agreement dated as of February 26, 1996 (as amended,  the "Bridge
Credit Agreement");

         WHEREAS, the Borrower,  the Banks and the Agent are parties to a Credit
Agreement dated as of December 6, 1994 (as amended, the "Credit Agreement"); and

         WHEREAS, at the request of the Borrower, the Banks have agreed to amend
the Minimum  Consolidated  Tangible Net Worth  covenant  contained in the Credit
Agreement  and the Bridge Banks have agreed to amend one of the Event of Default
provisions  contained in the Bridge Credit Agreement,  in each case as set forth
herein and subject to the terms and conditions contained herein;

         NOW, THEREFORE, the parties hereto agree as follows:

         SECTION  1.  Definitions;  References.  Unless  otherwise  specifically
defined herein,  each term used herein which is defined in the Credit  Agreement
or the Bridge Credit  Agreement shall have the meaning  assigned to such term in
the Credit  Agreement or the Bridge Credit  Agreement,  as the case may be. Each
reference  "hereof",  "hereunder",  "herein" and "hereby" and each other similar
reference  and  each  reference  to "this  Agreement"  and  each  other  similar
reference contained in the Credit Agreement or Bridge Credit Agreement, as the






case may be,  shall from and after the date  hereof  refer to the Bridge  Credit
Agreement, as the case may be, as amended hereby.

         SECTION  2.  Amendment  to  Minimum  Consolidated  Tangible  Net  Worth
Covenant in Credit Agreement. Section 5.09 of the Credit Agreement is amended by
changing the amount  specified in clause (iii)  therein from  "$112,000,000"  to
"109,485,000".

         SECTION 3.  Amendments  to Event of Default  Provision in Bridge Credit
Agreement.  The Event of Default  specified in clause (p) of Section 6.01 of the
Bridge Credit Agreement is amended by changing the date referred to therein from
"November 15, 1996" to "December 1, 1996".

         SECTION 4.  Representations  and Warranties  Correct;  No Default.  The
Borrower represents and warrants that on and as of the date hereof, after giving
effect to this Amendment, (a) the representations and warranties of each Obligor
contained in each  Financing  Document,  as amended,  to which it is a party are
true and (b) no Default  under the  Credit  Agreement  and no Default  under the
Bridge Credit Agreement exists.

         SECTION 5. Effect of Amendments.  Except as expressly set forth herein,
the amendments  contained  herein shall not constitute an amendment or waiver of
any term or condition of the Credit  Agreement,  the Bridge Credit  Agreement or
any other Financing Documents, and all such terms and conditions shall remain in
full force and effect and are hereby ratified and confirmed in all respects.

         SECTION 6.  Governing Law.  This Amendment shall be governed by and
construed in accordance with the laws of the State of New York.

         SECTION 7. Counterparts.  This Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

         SECTION 8. Consent by Subsidiary Guarantors.  By signing this Amendment
below,  each Subsidiary  Guarantor  affirms its obligations under the Subsidiary
Guarantee  Agreement and acknowledges  that is has guaranteed,  and continues to
guarantee,  all  obligations  of the  Borrower  in respect of  principal  of and
interest on all Bridge Loans and on all Loans outstanding under the Credit

                                        2





Agreement,  and all other  amounts  payable  by the  Borrower  in respect of the
Bridge  Notes,  the Bridge Credit  Agreement,  the Notes issued under the Credit
Agreement  and the Credit  Agreement,  in each case as amended to and  including
this Amendment and as the same may be amended from time to time hereafter.

         SECTION 9.  Effectiveness.  This Amendment shall become effective as of
the date hereof when the Agent shall have received  duly  executed  counterparts
hereof  signed by the  Borrower,  each of the Banks  and  Bridge  Banks and each
Subsidiary  Guarantor  (or,  in the case of any  party  as to which an  executed
counterpart  shall  not have  been  received,  the  Agent  shall  have  received
telegraphic, telex or other written confirmation from such party of execution of
a counterpart hereof by such party).

         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed by their respective authorized officers as of the date first above
written.

                            PERINI CORPORATION

                            By:      ________________________
                                     Name:
                                     Title:

                            By:      ________________________
                                     Name:
                                     Title:

                            Each of the undersigned banks is signing this
                            Amendment in its capacity as a "Bank" under
                            the Credit Agreement referenced above and as
                            a "Bridge Bank" under the Bridge Credit
                            Agreement referenced above:

                            MORGAN GUARANTY TRUST COMPANY OF
                            NEW YORK

                            By:      ________________________
                                     Name:
                                     Title:

                                         3





                            FLEET NATIONAL BANK

                            By:      ________________________
                                     Name:
                                     Title:

                            BANK OF AMERICA NATIONAL TRUST AND
                            SAVINGS ASSOCIATION

                            By:      ________________________
                                     Name:
                                     Title:

                            BAYBANK, N.A.

                            By:      ________________________
                                     Name:
                                     Title:

                            COMERICA BANK

                            By:      ________________________
                                     Name:
                                     Title:

                            HARRIS TRUST & SAVINGS BANK

                            By:      ________________________
                                     Name:
                                     Title:

                            STATE STREET BANK & TRUST COMPANY

                            By:      ________________________
                                     Name:
                                     Title:




                                         4





                            MORGAN GUARANTY TRUST COMPANY OF
                            NEW YORK, as Agent

                            By:      ________________________
                                     Name:
                                     Title:

                            Each of the undersigned Subsidiary
                            Guarantors consents to the foregoing
                            Amendment and confirms its agreement with
                            Section 8 of the Amendment:

                            PERINI BUILDING COMPANY, INC.

                            By:      ________________________
                                     Name:
                                     Title:

                            By:      ________________________
                                     Name:
                                     Title:

                            PERINI INTERNATIONAL CORPORATION

                            By:      ________________________
                                     Name:
                                     Title:

                            By:      ________________________
                                     Name:
                                     Title:

                            PERINI LAND & DEVELOPMENT COMPANY, INC.

                            By:      ________________________
                                     Name:
                                     Title:


                                         5





                            By:      ________________________
                                     Name:
                                     Title:

                            R.E. DAILEY & CO.

                            By:      ________________________
                                     Name:
                                     Title:

                            By:      ________________________
                                     Name:
                                     Title:

                            PARAMOUNT DEVELOPMENT ASSOCIATES, INC.
                            

                            By:      ________________________
                                     Name:
                                     Title:

                            By:      ________________________
                                     Name:
                                     Title:

                            PERINI ENVIRONMENTAL SERVICES, INC.

                            By:      ________________________
                                     Name:
                                     Title:

                            By:      ________________________
                                     Name:
                                     Title:






                                         6




                            PERINI RESORTS, INC.

                            By:      ________________________
                                     Name:
                                     Title:

                            By:      ________________________
                                     Name:
                                     Title:






                                         7