Rebar for an Irregular Shaped Slab

The Rebar for an Irregular Shaped Slab calculator estimates the total length and weight of reinforcement bars (rebar) needed for an irregular shaped concrete slab.

INSTRUCTIONS:Choose units and enter the following:

  • (A) Approximate Area of the irregular shaped slab (e.g. 72 ft2)
  • (rP) Estimate of Perimeter of the slab (e.g. 178 ft)
  • (S) Size of the rebar. Choose from the pull-down list size 2 to size 20.
  • (oCOn-center spacing of the rebar.
  • (M) Number of rebar mats

Weight and Length of Rebar: The weight of the rebar is returned in pounds. The length returned in feet. However, these can be automatically converted to compatible units via the pull-down menu.