Expert Guide

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Steel / Rebar Calculators

Steel Quantity for Footing – Mesh & Rebar

Quality Inspector

Kaka

Calculate rebar quantity for isolated foundations.

📐 Formula & Method

Uses standard concrete-to-steel ratio by volume.

Weight (kg) = Volume × % × 78.5

📋 Worked Example

1.5 × 1.5 × 0.4 (0.8% steel):
• Volume = 0.9 m³
• Weight = 0.9 × 0.008 × 7850 ≈ 56.5 kg

❓ Frequently Asked Questions

How much steel for a foundation?

Foundations usually have lower percentages (0.5%–0.8%) compared to columns and beams.