doubly reinforced beam |doubly reinforced section |singly reinforced beam and doubly reinforced beam

RCC beam design excel sheets as per is 456

DOUBLY REINFORCED BEAM DESIGN

The beam design mainly depends on the total load shared by the corresponding beam. it is easy to design a beam, once you understand the basic calculation& design considerations for a reinforced concrete beam.

DOWNLOAD BEAM DESIGN EXCEL SHEET- CLICK HERE

The question is how to design a beam manually?

Read the complete Post and sure you will get the idea for design of beam

STEPS FOR DESIGN OF BEAM

Assume the section size, grade of steel and concrete according to the structure to be built,
Calculate the total UDL, point load and other loads if applicable,
Calculate the factored moment,
Revise the size and grade of materials if required,
Calculate the area of steel required,
Provide the reinforcement detail.

Before going to start the design of the beam, let us understand the following three concepts which are useful for design calculation.

Beam type

There are two types of RCC beam,

Singly reinforced beam
doubly reinforced beam.

Singly reinforced beam

If the factored moment (Mu) is less than the limiting moment ( Mulim ) then the beam is designed as a singly reinforced beam.

( Mu<Mulim )

We primarily use the singly reinforced beam in the building if the stresses are less.

The bottom reinforcements are designed to resist the tensile load.

Top reinforcements are also provided in a singly reinforced beam but it is designed to hold the stirrups in position and not designed to be carried the compression load.