S24×90 standard 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.

S24×90 measures 24 in. deep with a 7 1/8 in. flange, on a 5/8 in. web and 7/8 in. flanges.

At 90 lb per foot it is one of the 5 S24 sizes, which run from 80 to 121 lb/ft.

For strong-axis bending its section modulus is Sx = 187 in³ and its moment of inertia Ix = 2250 in⁴, with a plastic modulus Zx = 222 in³.

Detailing dimensions

Depth (d)24"
Flange width (bf)7 1/8"
Web thickness (tw)5/8"
Flange thickness (tf)7/8"
k (detailing)1 3/4"
Workable gage (g)4"

Section properties

Weight90 lb/ft
Area (A)26.5 in²
Ix2250 in⁴
Sx187 in³
Zx222 in³
rx9.21 in
Iy44.7 in⁴
Sy12.5 in³
Zy22.4 in³
ry1.3 in
J6.05 in⁴

Other S24 sizes

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

S24×80S24×100S24×106S24×121

Similar weight standard beams

Comparable 90 lb/ft sections in other standard beam sizes.

S20×8686 lb/ft · Sx 155 in³S20×9696 lb/ft · Sx 165 in³S20×7575 lb/ft · Sx 128 in³S18×7070 lb/ft · Sx 103 in³S20×6666 lb/ft · Sx 119 in³S18×54.754.7 lb/ft · Sx 89 in³S15×5050 lb/ft · Sx 64.7 in³S12×5050 lb/ft · Sx 50.6 in³

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 S24×90 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Standard beams · Steel Beam Size Chart

Interactive drawing