RCC Slab / Roof Calculator
Frequently asked
How do you calculate RCC slab materials?
Calculate wet volume from dimensions, multiply by 1.54 for dry volume, then compute cement, sand and aggregate based on concrete grade. Steel is calculated as a percentage of volume.
How much steel is required for an RCC slab?
Typically 0.8% to 1.5% of concrete volume. For a 6 inch slab, it works out to about 80-150 kg per cubic metre. This calculator uses the percentage you enter.
What is the dry volume factor for RCC?
The dry volume factor is 1.54, meaning dry materials occupy 54% more volume than wet concrete due to voids.
Which related calculators pair well with the RCC Slab Calculator?
People building slabs often also need Steel TMT Calculator and Cement Concrete Calculator. Each is free and quotation-ready.