W8×28 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.

W8×28 measures 8 in. deep with a 6 1/2 in. flange, on a 5/16 in. web and 7/16 in. flanges.

At 28 lb per foot it is one of the 13 W8 sizes, which run from 10 to 67 lb/ft.

For strong-axis bending its section modulus is Sx = 24.3 in³ and its moment of inertia Ix = 98 in⁴, with a plastic modulus Zx = 27.2 in³.

Detailing dimensions

Depth (d)8"
Flange width (bf)6 1/2"
Web thickness (tw)5/16"
Flange thickness (tf)7/16"
k (detailing)15/16"
Workable gage (g)4"

Section properties

Weight28 lb/ft
Area (A)8.25 in²
Ix98 in⁴
Sx24.3 in³
Zx27.2 in³
rx3.45 in
Iy21.7 in⁴
Sy6.63 in³
Zy10.1 in³
ry1.62 in
J0.537 in⁴

Other W8 sizes

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

W8×10W8×13W8×15W8×18W8×21W8×24W8×31W8×35W8×40W8×48W8×58W8×67

All W8 sizes and dimensions →

Similar weight wide-flange beams

Comparable 28 lb/ft sections in other wide-flange beam sizes.

W16×2626 lb/ft · Sx 38.4 in³W14×2626 lb/ft · Sx 35.3 in³W12×2626 lb/ft · Sx 33.4 in³W10×2626 lb/ft · Sx 27.9 in³W14×3030 lb/ft · Sx 42 in³W12×3030 lb/ft · Sx 38.6 in³W10×3030 lb/ft · Sx 32.4 in³W6×2525 lb/ft · Sx 16.7 in³

Compare W8×28 with a nearby size

W8×24 vs W8×28W8×28 vs W8×31

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 W8×28 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Wide flange beams · Steel Beam Size Chart

Interactive drawing