Q. A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n1. If fc and ft are permissible compressive and tensile stresses, the moment to resistance of the beam, is (Solved)
1. bn (fc/2) (d - n/3)
2. Atft (d - n/3)
3. ½ n1 (1 - n1/3) cbd²
4. All the above
- d. All the above