This calculator is useful for doubly reinforced rectangular concrete beam with two layers of tension re-bar. This calculator uses FPS/US Customary Units. You can also use it for singly reinforced section, just by entering compression rebar equal to zero.

Effective depth is measured from the top edge to the centroid of tension rebar. This calculator uses the concept of Whitney's stress block and measures the depth of stress block "a" from the top edge. The user of this calculator is advised to comply with ACI guidelines for beam thickness, rebar spacing and cover etc.

This calculator also determines the minimum area of tension rebar required for crack control and balanced steel area required for a balanced section in addition to the area of tension steel available in the section.Please enter the values in the appropriate units mentioned in the form given below and start calculations.

Reinforced concrete beam

example on reinforced concrete

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