W16×45 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.

W16×45 measures 16 1/8 in. deep with a 7 in. flange, on a 3/8 in. web and 9/16 in. flanges.

At 45 lb per foot it is one of the 11 W16 sizes, which run from 26 to 100 lb/ft.

For strong-axis bending its section modulus is Sx = 72.7 in³ and its moment of inertia Ix = 586 in⁴, with a plastic modulus Zx = 82.3 in³.

Detailing dimensions

Depth (d)16 1/8"
Flange width (bf)7"
Web thickness (tw)3/8"
Flange thickness (tf)9/16"
k (detailing)1 1/4"
Workable gage (g)3 1/2"

Section properties

Weight45 lb/ft
Area (A)13.3 in²
Ix586 in⁴
Sx72.7 in³
Zx82.3 in³
rx6.65 in
Iy32.8 in⁴
Sy9.34 in³
Zy14.5 in³
ry1.57 in
J1.11 in⁴

Other W16 sizes

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

W16×26W16×31W16×36W16×40W16×50W16×57W16×67W16×77W16×89W16×100

All W16 sizes and dimensions →

Similar weight wide-flange beams

Comparable 45 lb/ft sections in other wide-flange beam sizes.

W12×4545 lb/ft · Sx 57.7 in³W10×4545 lb/ft · Sx 49.1 in³W21×4444 lb/ft · Sx 81.6 in³W18×4646 lb/ft · Sx 78.8 in³W14×4343 lb/ft · Sx 62.6 in³W21×4848 lb/ft · Sx 93 in³W14×4848 lb/ft · Sx 70.2 in³W8×4848 lb/ft · Sx 43.2 in³

Compare W16×45 with a nearby size

W16×40 vs W16×45W16×45 vs W16×50W12×45 vs W16×45

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 W16×45 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Wide flange beams · Steel Beam Size Chart

Interactive drawing