Rebar Calculator
How to estimate rebar for a slab
- Enter the slab length and width, the bar spacing and the edge cover.
- Choose the bar size and the length of stock bars.
- See the number of bars each way, the total length and the weight.
Frequently asked questions
Does it include laps?
No. Where bars have to be joined, add the lap length your design calls for, often 40 to 60 bar diameters.
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