W 21X55 - Section Properties

The W 21X55 is a steel section with a mass of 81.8 kg/m, an overall depth of 528.3 mm and width of 208.8 mm. It has a cross-sectional area of 104.5 cm², a second moment of area Iᵧ of 47450 cm⁴, a plastic modulus Wₚₗ,ᵧ of 2064.8 cm³, to AISC Shapes Database v16.0 (SCI P363 Blue Book).

Mass: 55 lb/ft (81.8 kg/m)
Depth: 20.8 in (528.3 mm)
Width: 8.22 in (208.8 mm)
Area: 16.2 in² (104.5 cm²)

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mass (lb/ft)55 (81.8 kg/m)

h (in)20.8 (528.3 mm)

b (in)8.22 (208.8 mm)

t_w (in)0.375 (9.5 mm)

t_f (in)0.522 (13.3 mm)

A (in²)16.2 (104.5 cm²)

I_y (in⁴)1140 (47450 cm⁴)

W_el,y (in³)110 (1802.6 cm³)

W_pl,y (in³)126 (2064.8 cm³)

i_y (in)8.4 (21.34 cm)

I_z (in⁴)48.4 (2015 cm⁴)