Section Family
RHS Caracteristiques de section Calculatrice
Use a rectangular hollow section preset to compare wall thickness, major-axis inertia, et section efficiency before running a poutre or column check.
Entrees geometriques
Type de section
Plan de section
Aire de section3456.0 mm²
Poids par metre27.13 kg/m
Caracteristiques techniques
Moment d'inertie (Ix)599.0 cm⁴
Moment d'inertie (Iy)1793.9 cm⁴
Module de section (Wx)119.8 cm³
Module de section (Wy)179.4 cm³
Rayon de giration (ix)41.6 mm
Rayon de giration (iy)72.0 mm
Calculation Basis
Assumptions & Limits
- Geometrie is idealized without fillet radii, rolling tolerances, or local cut-outs.
- Weight per meter is based on standard acier density et should be treated as an ingenierie estimate.
- Pour real section tables, manufacturer or code values should still be checked against the entered dimensions.
Reference Basis
- Documentation: Methodology
- Documentation: Engineering Review
- Roark's Formulas for Stress and Strain
- Mechanics of Materiaux references
- Classical section-property references
Starter RHS Dimensions
| Depth H | 100 mm |
| Width B | 200 mm |
| Wall thickness t | 6 mm |
| Section type | Closed rectangular hollow section |
| Best use | Bending and torsion-conscious preliminary sizing |
How To Use This Page
- RHS sections are efficient when you need clean torsional behavior et compact depth, but the wall thickness has a strong effect on weight et rigidite together.
- Compare Ix et Iy deliberately, because RHS members are often rotated depending on architectural depth limits or secondary framing direction.
- Once the section is selected, continue into the poutre solveur pour vertical response or into a slenderness-focused page when column action matters more.
Key Formulas
- Area: A = B H - (B - 2 t)(H - 2 t). Gross hollow-section area without corner-radius correction.
- Major-axis inertia: Ix = [B H^3 - (B - 2 t)(H - 2 t)^3] / 12. Useful when the deeper side is vertical.
- Minor-axis inertia: Iy = [H B^3 - (H - 2 t)(B - 2 t)^3] / 12. Important whenever the member could be rotated or loaded biaxially.
Questions frequentes
- Does this page include corner radii from manufacturer tables? No. The page uses the standard idealized hollow-section formulas, so it is best pour early-stage ingenierie comparison rather than final catalog certification.
- Why are both Ix et Iy important on RHS pages? Because rectangular hollow sections are often rotated in practice. A member that is stiff in one orientation can become much softer if the depth et width swap places.
- Should I use this page pour poutre checks or column checks? Use it pour both as a starting point. The page gives the section properties first, then you can move into poutre fleche or column-slenderness revue depending on the governing action.
Pages associees