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RHS 400x200/8

Production class: hot finished (EN 10210-2)

Section geometry

RHS shape
Height (h):
400mm
Width (b):
200mm
Wall thickness (t):
8mm
Outer rounding (router):
12mm
Inner rounding (rinner):
8mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
1.956E8
Z-axis:
6.660E7
Elastic section modulus (Wel):mm³
Y-axis:
9.781E5
Z-axis:
6.660E5
Plastic section modulus (Wpl):mm³
Y-axis:
1.203E6
Z-axis:
7.428E5
Radius of gyration (i):mm
Y-axis:
145.2
Z-axis:
84.74
Plastic shear area (Av):mm²
Y-axis:
3092
Z-axis:
6184
Weight per meter:
72.81kg/m
Area (A):
9275mm²
Surface area per meter:
1.179m²/m
Torsion constant (It):
1.573E8mm⁴

Profile overview for RHS 400x200/8

The RHS 400x200/8 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 400 mm, a width of 200 mm, and a uniform wall thickness of 8 mm. With a cross-sectional area of 9275.327412 mm² and a linear mass of 72.81132019 kg/m, the RHS 400x200/8 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 195600000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 1203000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 66600000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the RHS 400x200/8 provides a y-axis shear area (at strong bending axis) of 3091.775804 mm² for web shear verification and a torsion constant of 157300000 mm⁴ for calculating rotational twist under eccentric loading.