EXHIBIT 11 ROBERTSON-CECO CORPORATION COMPUTATION OF BASIC EARNINGS PER COMMON SHARE ---------------------------------------------- (In thousands, except per share data) (Unaudited) Three Months Ended March 31 ------------------------- 1999 1998 ----------- --------- BASIC: Income: Net income for basic earnings per share calculation .......................... $ 3,728 $ 3,508 ========= ========== Shares: Average number of common shares outstanding.......................... 16,063 16,060 ========== ========== Earnings Per Share: Net income per share.......................... $ .23 $ .22 =========== ========== EXHIBIT 11 ROBERTSON-CECO CORPORATION COMPUTATION OF DILUTED EARNINGS PER COMMON SHARE ------------------------------------------------ (In thousands, except per share data) (Unaudited) Three Months Ended March 31 --------------------- 1999 1998 ---- ---- DILUTED: Income: Net income for diluted earnings per share calculation .......................... $ 3,728 $ 3,508 =========== =========== Shares: Average number of common shares outstanding.......................... 16,063 16,060 Incremental shares to reflect dilutive effect of deferred compensation plan........ 21 36 ----------- ----------- Total number of common shares assuming dilution .......................... 16,084 16,096 ========== =========== Earnings Per Share: Net income per share.......................... $ .23 $ .22 ========== ===========