1. What Is RHS Unit Weight Calculation?

RHS (Rectangular Hollow Section) unit weight calculation determines the weight per meter of rectangular steel tubing based on its dimensions. This is essential for structural engineering, construction planning, and material estimation.

2. How Does The Calculator Work?

The calculator uses the RHS unit weight formula:

Where:

• \( height \) — Outer height of the section (mm)
• \( width \) — Outer width of the section (mm)
• \( thickness \) — Wall thickness of the section (mm)
• 0.00785 — Density conversion factor (kg/mm³/m)

Explanation: The formula calculates the cross-sectional area by subtracting the inner hollow area from the outer area, then multiplies by steel density to get weight per meter.

3. Importance Of Unit Weight Calculation

Details: Accurate weight calculation is crucial for structural design, transportation planning, cost estimation, and ensuring structural integrity in construction projects.

4. Using The Calculator

Tips: Enter all dimensions in millimeters. Ensure thickness is less than half of both height and width dimensions for valid hollow section calculation.

5. Frequently Asked Questions (FAQ)

Q1: What does RHS stand for?
A: RHS stands for Rectangular Hollow Section, which refers to rectangular steel tubing used in construction.

Q2: Why is the density factor 0.00785?
A: This factor represents the density of steel (7850 kg/m³) converted to kg/mm³/m for millimeter inputs.

Q3: Can this calculator be used for square hollow sections?
A: Yes, simply enter the same value for height and width to calculate square hollow section weight.

Q4: What are typical RHS dimensions?
A: Common RHS sizes range from 20x10mm to 400x200mm with various thicknesses, but custom sizes are also available.

Q5: How accurate is this calculation?
A: The calculation provides theoretical weight. Actual weight may vary slightly due to manufacturing tolerances and material composition.