Calculate the depth to the N$.$A $($d$)$ and determine the second

moment of area

for the following section:

Compressive concrete

T d

$350$

N$.$A

tensile concrete za

$4$N$32$

$2$N$20$

Oss

Ignore the tensile strength of the concrete in your calculations. The answer you obtain is referred to as the cracked second moment of area $($cr$).$