W40×297 wide-flange beam

Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.

W40×297 measures 39 7/8 in. deep with a 15 7/8 in. flange, on a 15/16 in. web and 1 5/8 in. flanges.

At 297 lb per foot it is one of the 24 W40 sizes, which run from 149 to 655 lb/ft.

For strong-axis bending its section modulus is Sx = 1170 in³ and its moment of inertia Ix = 23200 in⁴, with a plastic modulus Zx = 1330 in³.

Detailing dimensions

Depth (d)39 7/8"
Flange width (bf)15 7/8"
Web thickness (tw)15/16"
Flange thickness (tf)1 5/8"
k (detailing)2 15/16"
Workable gage (g)7 1/2"

Section properties

Weight297 lb/ft
Area (A)87.3 in²
Ix23200 in⁴
Sx1170 in³
Zx1330 in³
rx16.3 in
Iy1090 in⁴
Sy138 in³
Zy215 in³
ry3.54 in
J61.2 in⁴

Other W40 sizes

Same nominal size, different weight — useful when you are checking a substitution or a lighter section.

W40×149W40×167W40×183W40×199W40×211W40×215W40×235W40×249W40×264W40×277W40×278W40×294W40×324W40×327W40×331W40×362W40×372W40×392W40×397W40×431W40×503W40×593W40×655

All W40 sizes and dimensions →

Similar weight wide-flange beams

Comparable 297 lb/ft sections in other wide-flange beam sizes.

W30×292292 lb/ft · Sx 930 in³W36×302302 lb/ft · Sx 1130 in³W33×291291 lb/ft · Sx 1020 in³W44×290290 lb/ft · Sx 1240 in³W12×305305 lb/ft · Sx 435 in³W24×306306 lb/ft · Sx 789 in³W27×307307 lb/ft · Sx 887 in³W36×286286 lb/ft · Sx 1000 in³

Compare W40×297 with a nearby size

W40×294 vs W40×297W40×297 vs W40×324

Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need W40×297 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Wide flange beams · Steel Beam Size Chart

Interactive drawing