2217. 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____________________? September 7, 2025 by Admin A. bn (fc/2) (d – n/3) B. Atft (d – n/3) C. ½ n1 (1 – n1/3) cbd² D. All the above ✅ The correct answer is option D.
