Question

Consider a T-beam structure for light loading of continuos beams. What is the range of the ratio between its total depth(D) with its total span(s)?
1. 1/200 to 1/240
2. 1/100 to 1/150
3. 1/2 to 1/4
4. 1/15 to 1/20

Answer 1

Correct Answer - Option 4 : 1/15 to 1/20

Concept:

RCC T-beam:

• The beam consists of a flange and a rib in the form of a T, generally made of RC concrete or metal is known as a T-beam.
• The top part of the slab which acts along the beam to resist the compressive stress is called a flange.
• The part which lies below the slab and resists the shear stress is called the rib.

For continuous beams, the overall depth is assumed as follows :

1. For light loads = 1/15 to 1/20 of the span.
2. For medium loads = 1/12 to 1/15 of the span.
3. For heavy loads = 1/10 to 1/12 of the span.