W8x18 W8x18 Wide-flange shape W200x26.6 I 26.787 206.756 133.35 8.382 5.842 7.62 3395 26.6538 25779670 249373 279112 87.1353 3316978 49748 76378 31.2555 64980 32632632217 0.9221 Pending verification – nominal dimensions entered by the application developer ASTM A6/A6M and AISC Shapes Database (W-shapes) 2026-10-12 UNVERIFIED Dimensions converted from the inch values of the AISC shapes database (d, bf, tw, tf, kdes; root radius = kdes − tf). Nominal weight 18 lb/ft. Verify against ASTM A6/A6M and the AISC Steel Construction Manual before design use.