Enter the effective depth (mm), the diameter of the bar (mm), and the clear cover size (mm) into the Beam Length Calculator. The calculator will evaluate the Beam Length.
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Beam Length Formula
The following formula is used to calculate the Beam Length.
BEL = ED + D/2 + CS
- Where BEL is the Beam Length (in)
- ED is the effective depth (mm)
- D is the diameter of the bar (mm)
- CS is the clear cover size (mm)
How to Calculate Beam Length?
The following two example problems outline the steps and information needed to calculate the Beam Length.
Example Problem #1
- First, determine the effective depth (mm).
- The effective depth (mm) is calculated to be : 3.
- Next, determine the diameter of the bar (mm).
- The diameter of the bar (mm) is measured to be: 4.
- Next, determine the clear cover size (mm).
- The clear cover size (mm) is found to be: 6.
- Finally, calculate the Beam Length using the formula above:
BEL = ED + D/2 + CS
The values provided above are inserted into the equation below and computed.
BEL = 3 + 4/2 + 6 = 11 (in)
Example Problem #2
The variables required for this problem are provided below:
effective depth (mm) = 6
diameter of the bar (mm) = 8
clear cover size (mm) = 9
Test your knowledge using the equation and check your answer with the calculator.
BEL = ED + D/2 + CS = (in)
