W4×13 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.

W4×13 measures 4 1/8 in. deep with a 4 in. flange, on a 1/4 in. web and 3/8 in. flanges.

It weighs 13 lb per foot.

For strong-axis bending its section modulus is Sx = 5.46 in³ and its moment of inertia Ix = 11.3 in⁴, with a plastic modulus Zx = 6.28 in³.

Detailing dimensions

Depth (d)4 1/8"
Flange width (bf)4"
Web thickness (tw)1/4"
Flange thickness (tf)3/8"
k (detailing)3/4"
Workable gage (g)2 1/4"

Section properties

Weight13 lb/ft
Area (A)3.83 in²
Ix11.3 in⁴
Sx5.46 in³
Zx6.28 in³
rx1.72 in
Iy3.86 in⁴
Sy1.9 in³
Zy2.92 in³
ry1 in
J0.151 in⁴

Similar weight wide-flange beams

Comparable 13 lb/ft sections in other wide-flange beam sizes.

W8×1313 lb/ft · Sx 9.91 in³W10×1212 lb/ft · Sx 10.9 in³W6×1212 lb/ft · Sx 7.31 in³W12×1414 lb/ft · Sx 14.9 in³W10×1515 lb/ft · Sx 13.8 in³W8×1515 lb/ft · Sx 11.8 in³W6×1515 lb/ft · Sx 9.72 in³W8×1010 lb/ft · Sx 7.81 in³

Compare W4×13 with a nearby size

W4×13 vs W8×13

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 W4×13 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Wide flange beams · Steel Beam Size Chart

Interactive drawing