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`rD = f( 4 )`

12.7

The **Rebar Diameter** function returns the diameter of the cross-section of a piece of rebar based on its size (2,3,4,5,6,7,8,9,10,11,14,18).

**INSTRUCTIONS:** Choose the following:

- (
**rS**) The size of rebar which is used to compute the diameter for lapping considerations. - (
**lF**) The lapping factor is the multiple of the diameter of the rebar to specify the lapping distance. 40 (default) and 60 are common.

**Rebar Diameter (rD):** The calculator returns the rebar diameter in millimetres (mm). However, this can be automatically converted into compatible units via the pull-down menu.