Question

The specified span to depth ratios of beams satisfying the limits of vertical deflection are for spans up to 10 m.

1. For higher spans, these are to be modified by multiplying the ratios by (10/span in metres).

2. For higher spans, these are to be modified by multiplying the ratios by (span in metre/ 10).

3. They get further modified depending on area and type of tension reinforcement.

4. However, they do not change further with the area and type of compression reinforcement. Select the correct answer using the cod s given below:

• A. 1 and 3
• B. 2 and 3
• C. 1 and 4
• D. 2 and 4

Answer 1

The correct option is A 1 and 3

(a)
The area of compression reinforcement also changes the span to depth ratio