engineering recuitment APSC AE Civil 2020 Test Series Reinforced Concrete Structures Beams and Slabs
In a doubly-reinforced beam, if c and t are stresses in concrete and tension reinforcement, d is the effective depth and n is the depth of critical neutral axis n, the following relationship holds good
1
mc/t = n/(d - n)
2
(m + c)/t = n/(d + n)
3
(t + c)/m = (d + n)/n
4
mc/t = (d - n)/t