Concrete reinforcing mesh calculator

Count mesh sheets in an aligned rectangular grid, allowing your stated overlap between adjacent sheets.

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Slab length

Slab width

More inputs and assumptions

Sheet length

Sheet width

Required overlap

Answer

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Count mesh sheets in an aligned rectangular grid, allowing your stated overlap between adjacent sheets.

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

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Formula and assumptions

Count per direction = ceiling((span − overlap)/(sheet size − overlap)). Assumes whole sheets in one orientation. Does not optimize cuts or establish structural mesh, cover, lap or reinforcement requirements.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-26

Using Concrete reinforcing mesh calculator

Count mesh sheets in an aligned rectangular grid, allowing your stated overlap between adjacent sheets.

Next: Concrete calculator

A worked example

Example inputs: slab length = 10, slab width = 6, sheet length = 4, sheet width = 2, required overlap = 0.2. Sheets in a rectangular grid = 12.

Before you use the result

Example results for slab length

These examples use Slab width: 6; Sheet length: 4; Sheet width: 2; Required overlap: 0.2. They are reference calculations, not recommended settings.

Slab length	Sheets in a rectangular grid
5	8
10	12
20	24

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