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Square Hollow Section Properties Calculator (Square HSS)

Square hollow section (square HSS) properties, sizes and dimensions calculator. Compute section properties such as area, second moment of area, elastic and plastic section moduli, radius of gyration, torsional constants and surface area per foot.

Square HSS have a square cross-section except for rounded corners. Square HSS are designated by "HSS", overall outside dimension (in.), and wall thickness. For example, HSS 5 × 5 × 1/2 is nominally 5 in. by 5 in. with a 1/2 in. wall thickness.

Square hollow section properties calculator

1. Select size and wall thickness  →  2. Click Calculate
Nominal square HSS outside dimension in inches.
Available wall thicknesses for the selected square HSS size.

Note: Use a dot “.” as decimal separator.

 

Square hollow structural section (HSS) – dimensions and axes
Square HSS cross-section, dimensions and reference axes.

Results – section properties

Geometric properties for the selected square HSS size.
Parameter Value Unit
Basic shape and dimensions
Shape --- –
Design wall thickness [tdes]* --- in
Area and slenderness
Nominal weight [w] --- lb/ft
Area [A] --- in2
b / t --- –
h / t --- –
Flexural and torsional section properties
Second moment of area [I] --- in4
Elastic section modulus [S] --- in3
Radius of gyration [r] --- in
Plastic section modulus [Z] --- in3
Workable flat --- in
Polar moment of area [J] --- in4
Torsional constant for HSS shapes [C] --- in3
Total surface area per foot [Asurf] --- ft2 / ft

Note: Use a dot “.” as decimal separator.

Note *: The design wall thickness tdes shall be used in calculations involving the wall thickness of hollow structural sections (HSS) per AISC Steel Construction Manual, Section B3.12.

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Reference