Design the Beam AB Below by using Working Stress Method; A 13.3 kN/m B 4.8 m Dead Load, D.L = 10.7kN/m Live Load, L.L = 13.3 kN/m The allowable compressive stress of the concrete, fe 11 N/mm Allowable tensile stress in steel, fs 150 N/mm Modulus of elasticity of steel, Es = 260000 Mpa Modulus of elasticity of Concrete, Ec = 23000 Mpa Beam Width, b= 350 mm

Given the following properties of beam: b = 250 mm, d = 325 mm and h = 400 mm. a) Assuming the concrete is uncracked, compute the bending stresses (in MPa) in the extreme fibers of the beam at M = 100 kN-m. Blank 1 b) Determine the cracking moment (in kNm) for the section if f'c = 28 MPa. Blank 2 c) Compute the flexural stresses in the concrete and steel of the beam using the transformed-area method at M = 100 kN-m, n = 9 and reinforced with 5-16 mm diameter tension bars. Unit must be in MPa. fc = _Blank 3, fs =__________ Blank 4

Determine the service level moment capacity. The allowable stress for concrete is , and the allowable stress for steel is 30000 psi.