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RHS 100x40/4

Production class: cold formed (EN 10219-2)

Section geometry

RHS shape
Height (h):
100mm
Width (b):
40mm
Wall thickness (t):
4mm
Outer rounding (router):
8mm
Inner rounding (rinner):
4mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
1.157E6
Z-axis:
2.669E5
Elastic section modulus (Wel):mm³
Y-axis:
23140
Z-axis:
13350
Plastic section modulus (Wpl):mm³
Y-axis:
30260
Z-axis:
15650
Radius of gyration (i):mm
Y-axis:
33.77
Z-axis:
16.22
Plastic shear area (Av):mm²
Y-axis:
289.9
Z-axis:
724.9
Weight per meter:
7.966kg/m
Area (A):
1015mm²
Surface area per meter:
0.2663m²/m
Torsion constant (It):
7.453E5mm⁴

Profile overview for RHS 100x40/4

The RHS 100x40/4 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 4 mm. With a cross-sectional area of 1014.796447 mm² and a linear mass of 7.966152112 kg/m, the RHS 100x40/4 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 1157000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 30260 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 266900 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the RHS 100x40/4 provides a y-axis shear area (at strong bending axis) of 289.9418421 mm² for web shear verification and a torsion constant of 745300 mm⁴ for calculating rotational twist under eccentric loading.