How To Calculate RHS Weight

RHS Weight Formula:

\[ \text{Weight (kg/m)} = [(\text{height (mm)} \times \text{width (mm)}) - ((\text{height (mm)} - 2 \times \text{thickness (mm)}) \times (\text{width (mm)} - 2 \times \text{thickness (mm)}))] \times 0.00785 \]

Weight:

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1. What is RHS Weight Calculation?

RHS (Rectangular Hollow Section) weight calculation determines the weight per meter of steel rectangular hollow sections used in construction and engineering. This calculation is essential for material estimation, structural design, and cost calculations.

2. How Does the Calculator Work?

The calculator uses the RHS weight formula:

\[ \text{Weight (kg/m)} = [(\text{height} \times \text{width}) - ((\text{height} - 2 \times \text{thickness}) \times (\text{width} - 2 \times \text{thickness}))] \times 0.00785 \]

Where:

\( \text{height} \) — Outer height dimension (mm)
\( \text{width} \) — Outer width dimension (mm)
\( \text{thickness} \) — Wall thickness (mm)
\( 0.00785 \) — Density coefficient for steel (kg/mm³/m)

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

3. Importance of RHS Weight Calculation

Details: Accurate weight calculation is crucial for structural engineering, material procurement, transportation planning, and cost estimation in construction projects using rectangular hollow sections.

4. Using the Calculator

Tips: Enter all dimensions in millimeters. Ensure thickness is less than half of both height and width dimensions for valid calculations. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What does RHS stand for?
A: RHS stands for Rectangular Hollow Section, which is a type of steel tubing with a rectangular cross-section.

Q2: Why is the density coefficient 0.00785?
A: This value represents the density of steel (7850 kg/m³) converted to appropriate units for mm measurements (kg/mm³/m).

Q3: Can this calculator be used for square hollow sections?
A: Yes, for square hollow sections (SHS), simply enter the same value for both height and width dimensions.

Q4: What are typical applications of RHS?
A: RHS is commonly used in construction frames, support structures, fencing, handrails, and various architectural applications.

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