EXHIBIT 11.0 NORTHWEST PIPE COMPANY COMPUTATION OF EARNINGS PER SHARE (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ----------------- ---------------- 1996 1995 1996 1995 ---- ---- ---- ---- Net income as reported $2,600 $1,367 $5,368 $2,393 Reduction in interest as a result of conver- sion of the Series B and Series C Convert- ible Subordinated Debentures, net of tax -- 46 -- 90 ------ ------ ------ ------ Net income $2,600 $1,413 $5,368 $2,483 ------ ------ ------ ------ ------ ------ ------ ------ Earnings per share $.47 $.40 $.97 $.71 ------ ------ ------ ------ ------ ------ ------ ------ Weighted average shares outstanding: Common stock 5,263 698 5,263 698 Common stock issuable upon exercise of stock options 264 157 264 157 Conversion of Series B and Series C Convertible Subordinated Debentures -- 2,629 -- 2,629 ------ ------ ------ ------ Shares used in per share calculations 5,527 3,484 5,527 3,484 ------ ------ ------ ------ ------ ------ ------ ------