Concrete Slab Welded Wire Mesh (WWR / BRC) & Bar Chairs Estimator
Calculate welded wire reinforcement (WWR/BRC) sheets or rolls, 15% edge lap splicing, total steel tonnage, and plastic rebar support chairs for slabs on grade.
Total Welded Wire Mesh Sheets
Calculator Inputs
Total Welded Wire Mesh Sheets
Bar Chairs / Rebar Spacers Count
Total Mesh Steel Weight (kg)
Total Gross Mesh Area with Laps
Net Concrete Slab Area
Net Slab Area vs. Gross Mesh Area Breakdown
Reinforcement mesh must be elevated on support chairs at 1/3 depth from the top surface to effectively mitigate concrete shrinkage cracking.
All engineering calculations, structural estimates, and electrical sizing metrics are provided for preliminary estimation only. Always ensure compliance with relevant statutory building codes and occupational safety standards, verified by a certified professional engineer before practical implementation.
Calculation Methodology
Slab Area = Length * Width. Gross Mesh Area = Slab Area * 1.15 Overlap Factor. Mesh Sheets = Ceil(Gross Area / Sheet Area). Support Chairs = Slab Area * 2.5 chairs/m².
Frequently Asked Questions
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