Question

A one-way solid slab of a span of 3000 mm and a total thickness, h, of 150 mm is subjected to a service L.L. of 9.58 kN/m². The concrete compressive strength, f'_c , is 20.7 MPa, the steel yielding strength, f_y , is 414 MPa, the total cover of steel is 30 mm, minimum reinforcement ratio is ρ_min = 0.0033, maximum  reinforcement ratio is ρ_max = 0.0135, and density of concrete γ_c = 24 kN/m³. What is the required area of steel reinforcement, A_s,req., needed to resist the ultimate bending moment? urgent answer please

Answer 1

Area of steel required to resist moment developed is calculated.

Calculated area of steel is checked for minimum and maximum steel ratio.