Question

Same as Problem 13.5.A, except span = 18 ft, superimposed dead load = 50 psf, live load = 75 psf, f ′ c = 4 ksi, fy = 60 ksi.

*Problem 13.5.A: A one-way solid concrete slab is to be used for a simple span
of 16 ft. In addition to its own weight, the slab carries a superimposed dead
load of 40 psf and a live load of 100 psf. Using the strength method with
f ′c = 3 ksi and fy = 40 ksi, design the slab for minimum overall thickness.

Answer 1

important note

I strictly followed ACI 318 for estimation of thickness. there may different approches for estimating thickness say using 25 instead of 20 .

since the beam is lightly loaded it call minimum rebar

comment for doubts