A rectangular beam has b = 350 mm and d = 460 mm. the concrete compression strength is 30 MPa and the steel yield strength fy = 415 MPa. Calculate the required steel reinforcement area if the steel cover is 70 mm. use NSCP 2010 Md = 230 KN-m ML = 160 KN-m

Number 1 (parts i, ii, iii) please :)

RCC.

A rectangular beam has the dimensions (see Figure) b = 12 in., h - 20 in, and d 17 in. and is reinforced with three No. 9 (No. 29) bars so that As - 3.00 in. The concrete compressive strength fe is 4000 psi, and the tensile strength In bending (modulus of rupture) is 475 psi. The yield point of the steel f, is 60,000 psi. Determine the concrete compression stress at the top fiber caused by a bending moment M- 10 ft-kips. 9- 6.78 in, I= 4067 in, Es= 29000000, E = 3600000 17 in. 20 in. 3 #9 bars (A, - 3.00 in.?) 3 in. -12 in- Select one: a. 390 psi b. 1390 psi c. 200 psi d. 250 psi