Engineering & Construction
Rebar Lap Length Calculator
Multiply a bar diameter by the lap multiple you choose.
Free forever.
Lap length is the multiple you enter, times the bar diameter. The multiple is your assumption. It is not a check against a design code.
Result
Press Calculate.
Result
Press Calculate.
How to use the Rebar Lap Length Calculator
- Enter the bar diameter.
- Enter the multiple. People often try 40d or 50d while planning.
- Use the multiple written on the drawing when you have it.
Questions
Which multiple should I use?
The one on the structural drawing. A blank planning guess is not a splice design.
What does 50d mean for a 16 mm bar?
50 × 16 mm = 800 mm.
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