S shapes (American standard beams)

S3X5.7 S75X8.5

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 = 2.33d = 3tf = 0.26tf = 0.26tw = 0.17tw = 0.17
Cross-section, to scaledimensions in inches

Dimensions

Depthd
3in
Flange widthbf
2.33in
Web thicknesstw
0.17in
Flange thicknesstf
0.26in
Distance k (design)kdes
0.625in
Distance k (detailing)kdet
0.625in
Web clear depthT
1.75in
Distance between flange centroidsho
2.74in

Mass and area

Mass per lengthm
5.7lb/ft
Cross-sectional areaA
1.66in²

Strong axis x–x

Moment of inertiaIx
2.5in⁴
Elastic section modulusSx
1.67in³
Plastic section modulusZx
1.94in³
Radius of gyrationrx
1.23in

Weak axis y–y

Moment of inertiaIy
0.447in⁴
Elastic section modulusSy
0.383in³
Plastic section modulusZy
0.656in³
Radius of gyrationry
0.518in

Torsion and stability

Torsional constantJ
0.0433in⁴
Warping constantCw
0.838in⁶
Effective radius of gyrationrts
0.605in

Slenderness ratios

Flange slendernessbf/2tf
4.48
Web slendernessh/tw
11

Equivalents in other standards