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Beam Length Calculator

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Length Of Beam Calculator

Beam length is commonly required for construction projects. You can use following tool for quick calculation. Just fill out calculator input form , enter your value, effective depth, diameter of the bar, clear cover size into the tool to determine the beam length for you based on your inputs.

Beam Length Calculator

Enter any two values to calculate the required length.













Enter the required values to calculate the total beam length.
















Beam length is generally referred to as the total distance that a structural beam will be extended in any particular construction. Beams are horizontal construction elements that have loads such as floors or roofs designed to be carried by them as they span an open space.

User Guide

Input Action
Effective Depth (ED) (mm) Enter the effective depth of the beam (e.g., 400 mm).
Diameter of Bar (D) (mm) Input the bar diameter (e.g., 16 mm).
Clear Cover Size (CS) (mm) Enter the clear cover size (e.g., 25 mm).
Click Calculate Displays the beam length in millimeters.

Input Examples

Example Type Effective Depth (mm) Diameter of Bar (mm) Clear Cover Size (mm) Beam Length (mm)
Basic 400 16 25 433
Advanced 500 20 30 540

Formula for Calculating Beam Length

Calculate the beam length with:

BEL=ED+D2+CS\text{BEL} = \text{ED} + \frac{\text{D}}{2} + \text{CS}
Variable Description
BEL Beam Length (mm)
ED Effective Depth (mm)
D Diameter of the Bar (mm)
CS Clear Cover Size (mm)

Calculation Example

Step Calculation
Effective Depth (ED) 400 mm
Diameter of Bar (D), divided by 2 162=8\frac{16}{2} = 8 mm
Clear Cover Size (CS) 25 mm
Total Calculation 400+8+25=433400 + 8 + 25 = 433 mm

Answer: The required beam length is 433 mm.

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