EXHIBIT 11 ROBERTSON-CECO CORPORATION COMPUTATION OF BASIC EARNINGS PER COMMON SHARE ---------------------------------------------- (In thousands, except per share data) (Unaudited) Three Months Ended Nine Months Ended September 30 September 30 ------------------ ----------------- 1998 1997 1998 1997 ------ ------ ------ ------ BASIC: Income: Income from continuing operations......... $ 6,285 $ 5,579 $ 16,312 $ 13,074 Extraordinary gain .......................... - - - 4,568 -------- -------- --------- ------- Total income for basic earnings per share calculation ....................... $ 6,285 $ 5,579 $ 16,312 $ 17,642 ========= ======== ======== ======== Shares: Average number of common shares outstanding......................... 16,060 16,056 16,060 16,056 Earnings Per Share: Income from continuing operations........... $ .39 $ .35 $ 1.02 $ .82 Extraordinary gain .......................... - - - .28 ---------- -------- -------- ------- Net income per share....................... $ .39 $ .35 $ 1.02 $ 1.10 =========== ======== ======== ======= EXHIBIT 11 ROBERTSON-CECO CORPORATION COMPUTATION OF DILUTED EARNINGS PER COMMON SHARE ------------------------------------------------ (In thousands, except per share data) (Unaudited) Three Months Ended Nine Months Ended September 30 September 30 ------------------ ----------------- 1998 1997 1998 1997 ------ ------ ------ ------ DILUTED: Income: Income from continuing operations......... $ 6,285 $ 5,579 $ 16,312 $ 13,074 Extraordinary gain .......................... - - - 4,568 -------- -------- -------- -------- Net income for diluted earnings per share calculation ....................... $ 6,285 $ 5,579 $ 16,312 $ 17,642 ======== ======== ======== ======== Shares: Average number of common shares outstanding....................... 16,060 16,056 16,060 16,056 Incremental shares to reflect dilutive effect of deferred compensation plan..... 37 36 37 33 -------- -------- -------- -------- Total number of common shares assuming dilution ....................... 16,097 16,092 16,097 16,089 ======== ======== ======== ======== Earnings Per Share: Income from continuing operations.......... $ .39 $ .35 $ 1.02 $ .82 Extraordinary gain ........................ - - - .28 -------- -------- -------- -------- Net income per share....................... $ .39 $ .35 $ 1.02 $ 1.10 ======== ======== ======== ========