Calculator for Strength of doubly Reinforced Concrete beam with Two layers of tension rebar (SI/Metric Units)
This calculator is useful for doubly reinforced rectangular concrete beam with two layers of tension re-bar. There should be equal number of rebars in each layer. It uses SI/Metric system of 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 as well as balanced steel area required for a balanced section and the area or steel provided in the section.This calculator assumes a strirrp of #3 and maximum rebar of #11. It also calculates minimum beam width required. This calculator also calculates the strain in tension steel and compression steel to ascertain yielding of steel. There should be atleast 2 rebars and atmost 6 rebars in a single layer.
Please enter the values in the appropriate units (SI/Metric) mentioned in the form given below and start calculations.
Other Calculators for Strength of
Reinforced concrete beam
You can also visit the following solved
example on reinforced concrete
Strength of doubly reinforced 
You may also like the following Links
Excellent Calculators
Stress Transformation Calculator
Calculate Principal Stress, Maximum shear stress
and the their planes
Calculator for Moving Load Analysis
To determine Absolute Max. B.M. due to moving loads.
Bending Moment Calculator
Calculate bending moment & shear force
for simply supported beam
Moment of Inertia Calculator
Calculate moment of inertia of plane sections
e.g. channel, angle, tee etc.
Reinforced Concrete Calculator
Calculate the strength of
Reinforced concrete beam
Moment Distribution Calculator
Solving indeterminate beams
Deflection & Slope Calculator
Calculate deflection and slope of
simply supported beam for many load cases
Fixed Beam Calculator
Calculation tool for bending moment & shear
force for Fixed Beam for many load cases
BM & SF Calculator for Cantilever
Calculate SF & BM for Cantilever
Deflection & Slope Calculator for Cantilever
For many load cases of Cantilever
Overhanging beam calculator
For SF & BM of many load cases of
overhanging beam
More Links
Civil Engineering Quiz
Test your knowledge on different topics
of Civil Engineering
Research Papers
Research Papers, Thesis and Dissertation
List of skyscrapers of the world
Containing Tall building worldwide
Forthcoming conferences
Containing List of civil engineering
conferences, seminar and workshops
Profile of Civil Engineers
Get to know about other Civil Engineers
Professional Societies
Worldwide Civil Engineers
Professional Societies
Join our mailing list to get updates
Search our website for more...
Please Tell your Friends about us