**What is a Rebar Chair Calculator**?

A Rebar Chair Calculator is used to calculate the number and type of rebar chairs or supports required to maintain the proper spacing and elevation of rebar in concrete construction.

**Why is a Rebar Chair Calculator Used**?

Rebar chairs are essential in concrete construction to ensure that the reinforcing bars (rebar) are positioned at the correct height within the concrete structure.

The calculator helps determine the quantity and type of rebar chairs needed to prevent the rebar from sinking or shifting during concrete pouring, which is crucial for structural integrity.

## Rebar Chair Calculator

Use this calculator to determine the number and type of rebar chairs required for your construction project.

**How to Use a Rebar Chair Calculator:**

- Enter the rebar diameter in inches (the diameter of the rebar you are using).
- Enter the spacing in inches (the desired distance between rebar bars).
- Enter the elevation in inches (the height at which the rebar needs to be maintained within the concrete).
- Click the "Calculate" button.
- The calculator will provide the number of rebar chairs required for the specified configuration.

**Example Calculation:**

Suppose you are using rebar with a diameter of 0.5 inches, and you need to maintain the rebar at an elevation of 8 inches with a spacing of 12 inches.

After entering these values and clicking "Calculate," the calculator will determine that you need 2 rebar chair for this configuration.

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