S shapes (American standard beams)

S4X9.5 S100X14.1

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 = 2.8d = 4tf = 0.293tf = 0.293tw = 0.326tw = 0.326
Cross-section, to scaledimensions in inches

Dimensions

Depthd
4in
Flange widthbf
2.8in
Web thicknesstw
0.326in
Flange thicknesstf
0.293in
Distance k (design)kdes
0.75in
Distance k (detailing)kdet
0.75in
Web clear depthT
2.5in
Distance between flange centroidsho
3.71in

Mass and area

Mass per lengthm
9.5lb/ft
Cross-sectional areaA
2.79in²

Strong axis x–x

Moment of inertiaIx
6.76in⁴
Elastic section modulusSx
3.38in³
Plastic section modulusZx
4.04in³
Radius of gyrationrx
1.56in

Weak axis y–y

Moment of inertiaIy
0.887in⁴
Elastic section modulusSy
0.635in³
Plastic section modulusZy
1.13in³
Radius of gyrationry
0.564in

Torsion and stability

Torsional constantJ
0.12in⁴
Warping constantCw
3.05in⁶
Effective radius of gyrationrts
0.698in

Slenderness ratios

Flange slendernessbf/2tf
4.77
Web slendernessh/tw
8.33

Equivalents in other standards