ST12×53 tee (cut from a 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.

ST12×53 measures 12 1/4 in. deep with a 7 7/8 in. flange, on a 5/8 in. web and 1 1/16 in. flanges.

At 53 lb per foot it is one of the 5 ST12 sizes, which run from 40 to 60.5 lb/ft.

For strong-axis bending its section modulus is Sx = 24.1 in³ and its moment of inertia Ix = 216 in⁴, with a plastic modulus Zx = 43.3 in³.

Detailing dimensions

Depth (d)12 1/4"
Flange width (bf)7 7/8"
Web thickness (tw)5/8"
Flange thickness (tf)1 1/16"
k (detailing)2"
Workable gage (g)4"

Section properties

Weight53 lb/ft
Area (A)15.6 in²
Ix216 in⁴
Sx24.1 in³
Zx43.3 in³
rx3.72 in
Iy38.4 in⁴
Sy9.76 in³
Zy16.7 in³
ry1.57 in
J5.05 in⁴

Other ST12 sizes

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

ST12×40ST12×45ST12×50ST12×60.5

All ST12 sizes and dimensions →

Similar weight structural tees

Comparable 53 lb/ft sections in other tee sizes.

WT9×5353 lb/ft · Sx 14.1 in³WT6×5353 lb/ft · Sx 6.92 in³WT12×5252 lb/ft · Sx 20 in³WT15×5454 lb/ft · Sx 32 in³WT12×51.551.5 lb/ft · Sx 22 in³WT7×54.554.5 lb/ft · Sx 7.56 in³WT13.5×5151 lb/ft · Sx 25.3 in³WT10.5×50.550.5 lb/ft · Sx 15.8 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 ST12×53 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Tees · Steel Beam Size Chart

Interactive drawing