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RHS 100x40/3

Production class: cold formed (EN 10219-2)

Section geometry

RHS shape
Height (h):
100mm
Width (b):
40mm
Wall thickness (t):
3mm
Outer rounding (router):
6mm
Inner rounding (rinner):
3mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
9.234E5
Z-axis:
2.167E5
Elastic section modulus (Wel):mm³
Y-axis:
18470
Z-axis:
10840
Plastic section modulus (Wpl):mm³
Y-axis:
23750
Z-axis:
12380
Radius of gyration (i):mm
Y-axis:
34.39
Z-axis:
16.66
Plastic shear area (Av):mm²
Y-axis:
223.1
Z-axis:
557.7
Weight per meter:
6.129kg/m
Area (A):
780.8mm²
Surface area per meter:
0.2697m²/m
Torsion constant (It):
5.905E5mm⁴

Profile overview for RHS 100x40/3

The RHS 100x40/3 is a structural steel cross-section utilized in commercial construction, industrial framing, and mechanical engineering. Manufactured as a cold formed section, it complies with EN 10219-2 dimensional standards, ensuring predictability in detailing and fabrication.Access to its exact geometric and statical properties is essential for 3D modeling and structural verification.

Geometry: This rectangular/square hollow section is defined by a depth of 100 mm, a width of 40 mm, and a uniform wall thickness of 3 mm. With a cross-sectional area of 780.8230016 mm² and a linear mass of 6.129460563 kg/m, the RHS 100x40/3 offers a distinct stiffness-to-weight ratio for both column (axial) and beam applications.

Section properties: For design of bending, the major and minor axis properties dictate the member's structural capacity. The strong-axis moment of inertia (Iy) of 923400 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 23750 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 216700 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the RHS 100x40/3 provides a y-axis shear area (at strong bending axis) of 223.0922862 mm² for web shear verification and a torsion constant of 590500 mm⁴ for calculating rotational twist under eccentric loading.