ST tees

ST3X8.6 ST75X12.85

Standard: AISC Shapes Database v16.0Source: AISC (aisc.org) — Shapes Database v16.0 (Excel file)
Values published by AISC, in US customary (original) and SI units.
xybf = 3.57d = 3tf = 0.359tf = 0.359tw = 0.465tw = 0.465
Cross-section, to scaledimensions in inches

Dimensions

Depthd
3in
Flange widthbf
3.57in
Web thicknesstw
0.465in
Flange thicknesstf
0.359in
Distance k (design)kdes
0.813in
Distance k (detailing)kdet
0.8125in

Mass and area

Mass per lengthm
8.6lb/ft
Cross-sectional areaA
2.53in²

Strong axis x–x

Moment of inertiaIx
2.12in⁴
Elastic section modulusSx
1.02in³
Plastic section modulusZx
1.85in³
Radius of gyrationrx
0.915in

Weak axis y–y

Moment of inertiaIy
1.14in⁴
Elastic section modulusSy
0.642in³
Plastic section modulusZy
1.17in³
Radius of gyrationry
0.673in

Torsion and stability

Torsional constantJ
0.181in⁴
Warping constantCw
0.0772in⁶
Polar radius (shear center)r̄o
1.35in
Flexural constantH
0.705

Centers

Centroidȳ
0.915in
Plastic neutral axisyp
0.394in

Slenderness ratios

Flange slendernessbf/2tf
4.97
Wall slendernessD/t
6.45

Equivalents in other standards