Calculator for determining the strength of Reinforced Concrete Beam
This type of calculator can be used to find out the strength of rectangular section of a reinforced concrete beam (singly or doubly reinforced). It also examines lowest amount of steel for crack control and steel for balanced section.
This calculator can also be utilized for either FPS/US Customary units or SI/Metric units.
According to ACI (American Concrete Institute), the following assumptions are chosen for making the Calculator for determining the strength of RC beam:
- Ultimate compressive strain in concrete is identical to 0.003.
- Tensile strength of concrete is not considered.
- Strain differs linearly over the depth of the cross section.
- Steel stress differs linearly unless yielding and stays constant beyond yielding.
- Compressive force in the concrete is obtained from Whitney's equivalent stress block.
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Several values should chosen for the calculator. The effective depth d is obtained from the centroid of tension reinforcement up to the top-edge of beam. If two layers of tension rebar exist, divide them with a clear distance and other criteria according to ACI 318. The user of this calculator is should abide by the ACI guidelines for beam thickness, rebar spacing and cover etc.
This calculator can find out the nominal moment strength and other parameters of rectangular Reinforced Concrete beam. It can also measure the strain in the layers of rebar that facilitates to identify whether steel has yielded or not to examine if the section is tenion-controlled or not. The results from these calculators can be copied and pasted in the document file.
For computation, please choose from the following sections of reinforced concrete beam based on your preferred system of units.