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RHS 350x250/12

Production class: cold formed (EN 10219-2)

Section geometry

RHS shape
Height (h):
350mm
Width (b):
250mm
Wall thickness (t):
12mm
Outer rounding (router):
36mm
Inner rounding (rinner):
24mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
2.220E8
Z-axis:
1.326E8
Elastic section modulus (Wel):mm³
Y-axis:
1.268E6
Z-axis:
1.061E6
Plastic section modulus (Wpl):mm³
Y-axis:
1.544E6
Z-axis:
1.229E6
Radius of gyration (i):mm
Y-axis:
129.7
Z-axis:
100.2
Plastic shear area (Av):mm²
Y-axis:
5502
Z-axis:
7703
Weight per meter:
103.7kg/m
Area (A):
13210mm²
Surface area per meter:
1.138m²/m
Torsion constant (It):
2.775E8mm⁴

Profile overview for RHS 350x250/12

The RHS 350x250/12 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 350 mm, a width of 250 mm, and a uniform wall thickness of 12 mm. With a cross-sectional area of 13205.94671 mm² and a linear mass of 103.6666817 kg/m, the RHS 350x250/12 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 222000000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 1544000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 132600000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the RHS 350x250/12 provides a y-axis shear area (at strong bending axis) of 5502.477796 mm² for web shear verification and a torsion constant of 277500000 mm⁴ for calculating rotational twist under eccentric loading.