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`W and V = f( 8 , L )`

Enter a value for all fields

The **Concrete Displaced by Rebar** calculator estimates the net weight added to a slab by adding rebar, and the reduction in concrete cause by adding rebar.

**INSTRUCTIONS:** Choose units and enter the following:

- (
**L**) Length of Rebar - (
**rS**) Size of Rebar (2-11,14,18)

**Weight and Volume Change from Rebar added to Slab (W and V):** The calculator returns the following weights and volumes in standard units. However, these units can be automatically converted compatible units (e.g., cubic yards to cubic meters) via the pull-down menu.

- Volume of concrete displaced by rebar in cubic yards (yd
^{3}) or cubic feet (ft^{3}) for smaller amounts. - Net Weight added to slab by rebar in pounds (lbs). This accounts for displaced concrete by volume.
- Gross Weight of Rebar in pounds (lbs)
- Gross Weight of Concrete Displaced in (lbs)

Rebar weighs more than concrete and it takes up space in a concrete slab. When you add rebar to a slab or other concrete form (e.g. wall), you add weight and reduce the amount of concrete to fill the form. This calculator:

- Computes the weight and volume of rebar. The volume can be reduced from the volume of concrete in the slab.
- Computes the weight of the concrete equal to the volume of the rebar.
- Computes the difference between the weight of the rebar and the displaced concrete to provide the weight added by adding rebar. This can be added to the weight of the slab.

Density of Rebar vs Concrete:

- Density of Rebar: 7841.6 kg/m³
- Density of Concrete: 2400.0 kg/m³

**Rebar and Concrete in a Slab:**The calculator returns all of the following:**Total Length**of rebar in feet**Total Weight**of rebar in pounds**Total Volume**of concrete in cubic yards. Note: this accounts for the concrete displaced by rebar.**Total Weight of Slab**in pounds. Note: this includes the weight of rebar and concrete.

- Length of Rebar in Grid
- Weight of Rebar in Grid
- Rebar in a Wall
- Rebar in an Irregular Shaped Slab
- Rebar in a Circular Slab
- Rebar Lapping Length
- Rebar Cost Estimate
- Weight of Length of Rebar
- Concrete Displaced by Rebar
- Compute the
**Total Weight of a Slab with Rebar** - Spanish Version:
**Calculadora de Barras de Refuerzo**