RCC Structures Design
With usual notations the depth of the neutral axis of a balanced section, is given by

mc/t = n/(d - n)
mc/t = (d - n)/n
t/mc = (d + n)/n
t/mc = (d - n)/n

ANSWER DOWNLOAD EXAMIANS APP

RCC Structures Design
A pre-stressed concrete member is preferred because

Removal of cracks in the members due to shrinkage
Its dimensions are not decided from the diagonal tensile stress
Large size of long beams carrying large shear force need not be adopted
All listed here

ANSWER DOWNLOAD EXAMIANS APP