State of Missouri
                    Rebecca McDowell Cook, Secretary of State
                     P.O. Box 778, Jefferson City, Mo. 65102

                              Corporation Division

                               Articles of Merger
                         (To be submitted in duplicate)

         Pursuant to the provisions of The General and Business Corporation Law
of Missouri, the undersigned corporations certify the following:

(1)  That INSTALLATION TECHNICIANS, INC. of the State of Missouri and

(2)  That DYCOM ACQUISITION CORPORATION I of the State of Missouri are hereby
     merged and that the above named INSTALLATION TECHNICIANS, INC. is the
     surviving corporation.

(3)  That the Board of Directors of INSTALLATION TECHNICIANS, INC., by
     resolution adopted by unanimous written consent of the members of such
     board dated February 23, 1998, approved the Plan of Merger set forth in
     these articles.

(4)  That the Board of Directors of DYCOM ACQUISITION CORPORATION I, by
     resolution adopted by unanimous written consent of the members of such
     board dated February 23, 1998, approved the Plan of Merger set forth in
     these articles.

(5)  The Plan of Merger was approved by a unanimous written consent of the
     shareholders of INSTALLATION TECHNICIANS, INC. dated February 23, 1998 with
     3,000 shares entitled to vote, 3,000 voted in favor and 0 voted against
     such plan.

(6)  The Plan of Merger was approved by a unanimous written consent of the sole
     shareholder of DYCOM ACQUISITION CORPORATION I dated February 23, 1998 with
     100 shares entitled to vote, 100 voted in favor and 0 voted against such
     plan.

(7)  PLAN OF MERGER

     1. INSTALLATION TECHNICIANS, INC. of the State of Missouri is the survivor.

     2.   All of the property, rights, privileges, leases and patents of DYCOM
          ACQUISITION CORPORATION I are to be transferred to and become the
          property of INSTALLATION TECHNICIANS, INC., the survivor. The officers
          and board of directors of the above named corporations are authorized
          to execute all deeds,




          assignments, and documents of every nature which may be needed to
          effectuate a full and complete transfer of ownership.

     3.   The officers of INSTALLATION TECHNICIANS, INC. and board of directors
          of DYCOM ACQUISITION CORPORATION I shall continue in office until
          their successors are duly elected and qualified under the provisions
          of the by-laws of the surviving corporation. Attached hereto as
          Exhibit A is a list of the officers and directors of the surviving
          corporation.

     4.   The outstanding shares of INSTALLATION TECHNICIANS, INC., of which
          there are 30,000 (of which 3,000 are voting common stock and 27,000
          are nonvoting common stock), shall be converted on the following
          basis: each outstanding share of INSTALLATION TECHNICIANS, INC. shall
          be converted into 20 shares of common stock of DYCOM INDUSTRIES INC.,
          a Florida corporation and the sole shareholder of DYCOM ACQUISITION
          CORPORATION I.

     5.   The outstanding shares of DYCOM ACQUISITION CORPORATION I, of which
          there are 100, shall be converted on the following basis: each
          outstanding share of DYCOM ACQUISITION CORPORATION I shall be
          converted into 300 shares of common stock (of which, upon conversion
          of all such stock, 3,000 shall be voting common stock and 27,000 shall
          be nonvoting common stock) of INSTALLATION TECHNICIANS, INC.

     6.   The articles of incorporation of the surviving corporation are amended
          as set forth on Exhibit B attached hereto and by this reference
          incorporated herein and made a part hereof.




IN WITNESS WHEREOF, these Articles of Merger have been executed in duplicate by
the aforementioned corporations as of the day and year hereafter acknowledged.

                CORPORATE SEAL             INSTALLATION TECHNICIANS, INC.



                                           By     /s/ Gerald W. Hartman
                                             ----------------------------------
                                           Name:  Gerald W. Hartman
                                           Title: President
                                                  (President or Vice President)
ATTEST:


By   /s/ Linda S. Noell
  ---------------------
Name: Linda S. Noell
Title:   Secretary
           (The Secretary of Assistant Secretary)





State of Missouri    )
                      ss.
County of Stone      )

                  I, Linda Noell , a Notary Public, do hereby certify that on
the 1st day of April, 1998, personally appeared before me Gerald W. Hartman who
being by me first duly sworn, declared that he is the President of INSTALLATION
TECHNICIANS, INC. that he signed the foregoing documents as President, of the
corporation, and that the statements therein contained are true.

             (Notarial Seal)          /s/ Linda Noell
                                      ----------------------------------------
                                                                 Notary Public

                                      My commission expires   November 3, 1999



          CORPORATE SEAL             DYCOM ACQUISITION CORPORATION I



                                     By     /s/ Steven E. Nielsen
                                       -------------------------------------
                                     Name:  Steven E. Nielsen
                                     Title: President
                                           (The President or Vice President)


ATTEST:


By    /s/ Patricia B. Frazier
  ---------------------------
Name: Patricia B. Frazier
Title: Secretary
          (The Secretary of Assistant Secretary)




State of     Florida    )
                         ss.
County of    Palm Beach ) 


                  I, Joan C. McLinton , a Notary Public, do hereby certify that
on the 1st day of April, 1998, personally appeared before me Steven E. Nielsen
and Patricia B. Frazier who being by me first duly sworn, declared that he is
the President and Secretary respectively of DYCOM ACQUISITION CORPORATION I that
he signed the foregoing documents as President & Secretary respectively of the
corporation, and that the statements therein contained are true.

        (Notarial Seal)               /s/ Joan C. McLinton
                                      -----------------------------------------
                                      Notary Public

                                      My commission expires     August 13, 2000




                                    Exhibit A
                                    ---------


         Officers
         --------

         Gerald W. Hartman                      President
         David Smith                            Vice President and Treasurer
         Linda Noell                            Secretary


         Directors
         ---------

         Gerald W. Hartman
         John J. Ekstrom
         Thomas R. Pledger
         Steven E. Nielsen




                                    Exhibit B
                                    ---------

                   Amendments to the Articles of Incorporation
                        of Installation Technicians, Inc.
                        ---------------------------------

1.   Article IV is hereby deleted.

2.   Article V is hereby renumbered Article IV.

3.   Article VI is hereby deleted and the following shall be inserted in lieu
     thereof:

                                   "Article V
                                   ----------

           (1)   The number of directors to constitute the first board of
         directors is four. Thereafter, the number of directors shall be fixed
         by, or in the manner provided by the By-Laws of the Corporation. Any
         changes in the number will be reported to the Secretary of State within
         thirty calendar days of such change.

           (2)   To the fullest extent permitted by the General and Business
         Corporation Law of Missouri as it now exists and as it may hereafter be
         amended, no director of the Corporation shall be personally liable to
         the Corporation or its stockholders for monetary damages for breach of
         fiduciary duty as a director."

4.   Article VII is hereby renumbered Article VI.

5.   Article VIII is hereby deleted and the following shall be inserted in lieu
     thereof:

                                  "Article VII
                                  ------------

             The purpose of the Corporation is to engage in any lawful act or
         activity for which corporations may be organized under the General and
         Business Corporation Law of Missouri."

6.   Article IX is hereby renumbered Article VIII.




7.   Article X is hereby deleted and the following shall be inserted in lieu
     thereof:

                                   "Article IX
                                   -----------

           (1)  The Corporation shall indemnify any person who was or is a
         party or is threatened to be made a party to any threatened, pending or
         completed action, suit, or proceeding, whether civil, criminal,
         administrative or investigative, other than an action by or in the
         right of the Corporation, by reason of the fact that he is or was a
         director, officer, employee or agent of the Corporation, or is or was
         serving at the request of the Corporation as a director, officer,
         employee or agent of another corporation, partnership, joint venture,
         trust or other enterprise, against expenses, including attorneys' fees,
         judgements, fines and amounts paid in settlement actually and
         reasonably incurred by him in connection with such action, suit, or
         proceeding if he acted in good faith and in a manner he reasonably
         believed to be in or not opposed to the best interests of the
         Corporation, and, with respect to any criminal action or proceeding,
         had no reasonable cause to believe his conduct was unlawful. The
         termination of any action, suit, or proceeding by judgement, order,
         settlement, conviction, or upon a plea of nolo contendere or its
         equivalent, shall not, of itself, create a presumption that the person
         did not act in good faith and in a manner which he reasonably believed
         to be in or not opposed to the best interests of the Corporation, and,
         with respect to any criminal action or proceeding, had reasonable cause
         to believe that his conduct was unlawful.

           (2)   The Corporation shall indemnify any person who was or is
         threatened to be made a party to any threatened, pending or completed
         action or suit by or in the right of the Corporation to procure a
         judgement in its favor by reason of the fact that he is or was a
         director, officer, employee or agent of the Corporation, or is or was
         serving at the request of the Corporation as a director, officer,
         employee or agent of another corporation, partnership, joint venture,
         trust or other enterprise against expenses, including attorney's fees,
         and amounts paid in settlement actually and reasonably incurred by him
         in connection with the defense or settlement of the action or suit if
         he acted in good faith and in a manner he reasonably believed to be in
         or not opposed to the best interests of the Corporation; except that no
         such indemnification shall be made by the Corporation in respect of any
         claim, issue or matter as to which such person shall have been adjudged
         to be liable for negligence or misconduct in the performance of his
         duty to the Corporation unless and only to the extent that the court in
         which such action or suit was brought determines upon application that,
         despite the adjudication of liability and in view of all the
         circumstances of the case, the person is fairly and reasonably entitled
         to indemnity for such expenses which the court shall deem proper.

           (3)   To the extent that a director, officer, employee or agent of
         the Corporation has been successful on the merits or otherwise in
         defense of any action, suit or proceeding referred to in Sections (1)
         and (2) of this Article IX, or in defense of




         any claim, issue or matter therein, he shall be indemnified against
         expenses, including attorneys' fees, actually and reasonably incurred
         by him in connection with the action, suit or proceeding.

             (4) Any indemnification under Sections (1) and (2) of this Article
         IX, unless ordered by a court, shall be made by the Corporation only as
         authorized in the specific case upon a determination that
         indemnification of the director, officer, employee or agent is proper
         in the circumstances because he has met the applicable standard of
         conduct set forth in this Article IX. The determination shall be made
         by the board of directors by a majority vote of a quorum consisting of
         directors who were not parties to the action, suit or proceeding, or if
         such a quorum is not obtainable, or even if obtainable, as a quorum of
         disinterested directors so directs, by independent legal counsel in a
         written opinion, or by the shareholders.

             (5) Expenses incurred in defending a civil or criminal action, suit
         or proceeding shall be paid by the Corporation in advance of the final
         disposition of the action, suit, or proceeding provided such payment is
         authorized by the board of directors in the specific case upon receipt
         of an undertaking by or on behalf of the director, officer, employee or
         agent to repay such amount unless it shall ultimately be determined
         that he is entitled to be indemnified by the Corporation as authorized
         in this Article IX.

             (6) The indemnification provided by this Article IX shall not be
         deemed exclusive of any other rights to which those seeking
         indemnification may be entitled under these Articles of Incorporation
         or By-Laws or any agreement, vote of shareholders or disinterested
         directors or otherwise, both as to action in his official capacity and
         as to action in another capacity while holding such office, and shall
         continue as to a person who has ceased to be a director, officer,
         employee or agent and shall inure to the benefit of the heirs,
         executors and administrators of such a person.

             (7) The Corporation may purchase and maintain insurance on behalf
         of any person who is or was a director, officer, employee or agent of
         the Corporation, or is or was serving at the request of the Corporation
         as a director, officer, employee or agent of another corporation,
         partnership, joint venture, trust or other enterprise against any
         liability asserted against him and incurred by him in any such
         capacity, or arising out of his status as such, whether or not the
         Corporation would have the power to indemnify him against such
         liability under the provisions of Section 351.355 of the General and
         Business Corporation Law of Missouri.

             (8) For the purpose of this Article IX, references to "the
         Corporation" shall include all constituent corporations absorbed in a
         consolidation or merger as well as the resulting or surviving
         corporation so that any person who is or was a director, officer,
         employee or agent of such a constituent corporation or is or was
         serving at the request




         of such constituent corporation as a director, officer, employee or
         agent of another corporation, partnership, joint venture, trust or
         other enterprise shall stand in the same position under the provisions
         of this Article IX with respect to the resulting or surviving
         corporation as he would if he had served the resulting or surviving
         corporation in the same capacity.

             (9) For purposes of this Article IX, references to "other
         enterprises" shall include employee benefit plans; references to
         "fines" shall include any excise taxes assessed on a person with
         respect to an employee benefit plan; and references to "serving at the
         request of the Corporation" shall include any service as a director,
         officer, employee or agent of the Corporation which imposes duties on,
         or involves service by, such director, officer, employee or agent with
         respect to any employee benefit plan, its participants or
         beneficiaries; and a person who acted in good faith and in a manner he
         reasonably believed to be in the interest of the participants and
         beneficiaries of an employee benefit plan shall be deemed to have acted
         in a manner "not opposed to the best interests of the Corporation" as
         referred to in this Article IX."