1. What is RHS Load Capacity Calculation?

The RHS (Rectangular Hollow Section) load capacity calculation according to AS 4100 determines the maximum load a structural member can safely carry based on its section properties, material strength, and appropriate safety factors.

2. How Does the Calculator Work?

The calculator uses the AS 4100 formula:

Where:

• Section Modulus — Geometric property of the cross-section (cm³)
• Yield Strength — Material yield strength (MPa)
• Safety Factor — Design safety factor (unitless)

Explanation: The formula calculates the maximum bending moment capacity divided by the safety factor to determine safe working load.

3. Importance of Load Capacity Calculation

Details: Accurate load capacity calculation is essential for structural design, ensuring safety, compliance with Australian standards, and optimal material usage in construction projects.

4. Using the Calculator

Tips: Enter section modulus in cm³, yield strength in MPa, and appropriate safety factor (typically 1.5-2.0 for structural applications). All values must be positive with safety factor ≥ 1.

5. Frequently Asked Questions (FAQ)

Q1: What is Section Modulus?
A: Section modulus is a geometric property that represents a section's resistance to bending, calculated based on the cross-sectional shape and dimensions.

Q2: What are typical yield strength values for RHS?
A: Common yield strengths range from 250 MPa (mild steel) to 350 MPa or higher (high-strength steel).

Q3: How to determine appropriate safety factor?
A: Safety factors depend on application, loading conditions, and material consistency. Consult AS 4100 for specific guidance.

Q4: Does this calculation account for buckling?
A: This basic calculation focuses on bending capacity. Buckling considerations require additional calculations per AS 4100.

Q5: Can this calculator be used for other section types?
A: While the formula is similar, different section types may have additional considerations. Always verify with appropriate standards.