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RHS 180x100/4

Production class: hot finished (EN 10210-2)

Section geometry

RHS shape
Height (h):
180mm
Width (b):
100mm
Wall thickness (t):
4mm
Outer rounding (router):
6mm
Inner rounding (rinner):
4mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
9.445E6
Z-axis:
3.794E6
Elastic section modulus (Wel):mm³
Y-axis:
1.049E5
Z-axis:
75870
Plastic section modulus (Wpl):mm³
Y-axis:
1.280E5
Z-axis:
85160
Radius of gyration (i):mm
Y-axis:
66.14
Z-axis:
41.92
Plastic shear area (Av):mm²
Y-axis:
771
Z-axis:
1388
Weight per meter:
16.95kg/m
Area (A):
2159mm²
Surface area per meter:
0.5497m²/m
Torsion constant (It):
8.521E6mm⁴

Profile overview for RHS 180x100/4

The RHS 180x100/4 is a structural steel cross-section utilized in commercial construction, industrial framing, and mechanical engineering. Manufactured as a hot finished section, it complies with EN 10210-2 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 180 mm, a width of 100 mm, and a uniform wall thickness of 4 mm. With a cross-sectional area of 2158.831853 mm² and a linear mass of 16.94683005 kg/m, the RHS 180x100/4 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 9445000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 128000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 3794000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the RHS 180x100/4 provides a y-axis shear area (at strong bending axis) of 771.0113761 mm² for web shear verification and a torsion constant of 8521000 mm⁴ for calculating rotational twist under eccentric loading.