When we design beam how we choose depth and width of beam?

[ashok]

When we design beam how we choose depth and width of beam?

 

[Dnyan Deshmukh]

I am not a designer but i can tell you a basic concept behind it.

Owner specifies, my beams should not pop up from wall face - this becomes a width parameter which you can have max.

Regarding Depth of the beam, you can have max depth as much as it wont obstruct the other services, such as window - here you can have max beam depth is above lintel level.

Lift - here you can have max depth as per the height of lift doors (this is most critical thing as the heights of lift door manufactured by all companies are not same. and breaking beam to adjust the lift in lift shaft may cause a severe damage to structure).

So while designing you can keep a customer point and serviceability issues on mind for deciding the height and width of the beam.

Rest you can always test your structure theory as per dimensions you decided to use.

 

[ashok]

I am not a designer but i can tell you a basic concept behind it.

Owner specifies, my beams should not pop up from wall face - this becomes a width parameter which you can have max.

Regarding Depth of the beam, you can have max depth as much as it wont obstruct the other services, such as window - here you can have max beam depth is above lintel level.

Lift - here you can have max depth as per the height of lift doors (this is most critical thing as the heights of lift door manufactured by all companies are not same. and breaking beam to adjust the lift in lift shaft may cause a severe damage to structure).

So while designing you can keep a customer point and serviceability issues on mind for deciding the height and width of the beam.

Rest you can always test your structure theory as per dimensions you decided to use.

This the correct answer

The overall depth of singly reinforced rectangular beam shall be not less than 1/20 of the span.

International code of Reinforcement concrete (1970) recommends a minimum beam depth for both rectangular and T beams to be equal to or greater than 1/12 of the span length.

For designing the beam depth may be assumed as 1/10 to 1/12 of the span for simply supported beams and 1/12 to 1/18 for continuous beam.

The Breath of beam shall normally be 2/3 to 1/2 of the depth but not less than 1/3 of the depth. A good rule for the breadth is to take 3/5 of the depth of beam.

 

[rameshchandrapatel]

If you know all the answers then why are you asking questions ?

 

[Srinivasan]

I think this gentle man asking questions for the sake asking or keeping himself in limelight.just ignore him