Download Doubly Reinforced Beam Spreadsheet, Design of Doubly Reinforced Beam

A doubly Reinforced Beam is described as the beam reinforced with steel both in tension and compression zone. When the depth of the beam is constrained, this type of beam is mostly effective.

If a beam having limited depth on the Tension side the reinforced to adequate resistance capacity for resisting the bending moment does not prevail.

On satisfying the following condition the doubly reinforced beams are applicable.

1. If the outside load is fluctuating, i.e. the load is functioning on the face of the member.
2. The load is eccentric which varying on its axis from one side to another.
3. Shock or impact or accidental lateral thrust are the dependent factors of the member.
4. Requirement doubly reinforced beam, if architectural constraints exist on the beam size and the Moment to be defended is very big than a singly-reinforced.

Large moments are defended by means of doubly Reinforcing the beam essentially enlarges its compression area which sequentially facilitates to expansion area of tension reinforcement whereas control is under-reinforced.

Also Read: Download Design Spreadsheet of Reinforced Concrete Staircase

Due to under wind load or earthquake load, if the reversal of load occurs the same can result in creating tension in both parts of the beam i.e lower and upper parts which should be reinforced with tensile reinforcements.

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