125×75×3.8 RHS

Rectangular hollow sections from Australian-Sections.xlsx (Sheets 1-19).

75 mm125 mm

Outline drawn from the published dimensions. Fillets and root radii are not shown.

Dimensions

PropertyMetricImperial
Height125 mm4.9213 in
Width75 mm2.9528 in
Thickness, t3.8 mm0.149606 in

Bending about the major axis

PropertyMetricImperial
Second moment of area, Iₓ2,930,000 mm⁴7.0394 in⁴
Elastic modulus, Sₓ46,880 mm³2.8608 in³
Plastic modulus, Zₓ57,700 mm³3.5211 in³
Radius of gyration, rₓ45.5852 mm1.7947 in
Distance to top fibre62.5 mm2.4606 in
Distance to bottom fibre62.5 mm2.4606 in

Bending about the minor axis

PropertyMetricImperial
Second moment of area, I_y1,330,000 mm⁴3.1953 in⁴
Elastic modulus, S_y35,466.667 mm³2.1643 in³
Plastic modulus, Z_y40,600 mm³2.4776 in³
Radius of gyration, r_y30.7126 mm1.2092 in

Torsion and warping

PropertyMetricImperial
Torsion constant, J3,020,000 mm⁴7.2556 in⁴

Mass

PropertyMetricImperial
Mass per metre11.0685 kg/m7.4377 lb/ft
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