# How to design a single reinforcement, doubly reinforcement and T beam

Given below the characteristics of a single reinforcement beam :-

a. Beam is reinforced adjacent to the tensile face.

b. Reinforcement withstands the tension.

c. Concrete withstands the compression.

Given below the characteristics of a doubly reinforcement beam :-

a. Beam is inflexible for architectural plan.

b. Reinforcement is arranged in tension and compression zone simultaneously.

c. Concrete has constraint to withstand the entire compression and as a result additional reinforcement is necessary.

Given below the characteristics of a T reinforcement beam :-

A portion of slab performs like the topmost portion of beam

Approaching cross section is like T-shaped

The slab section of the beam belongs to flange

The projected beam belongs to web or stem

Design method for singly reinforced beam :-

Define the service loads.

Suppose ‘h’’ according to the support conditiona

Work out d = h – effective cover

Suppose the value of b is determined with the rule of thumb

Calculate self weight

Primary elastic analysis and assume B.M (M), shear force (V) values

Calculate Pmin and Pb

Select P among Pmin and Pb

Compute ꙍ, Kn

From Kn & M workout d

Verify the necessary d with supposed d

Based on the final values of p, b, d find out the total as necessary

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