1. Calculate the bending stresses in the beam using the transformed area method. Use a concrete strength of 3,000 psi. n= 10 17-in. 20 in. 1.5 k/ft (including beam weight) 4 8 ... -24 ft 24 in.

A rectangular reinforced concrete beam has a length of 14 m is simply supported atboth ends. The width of beam is 350mm and the overall depth is 550  mm. Determine the area of the steel reinforcements if the beam is to carry a DL = 15kN/m and LL =18kN/m. The concrete strength fc = 25  and steel yield fy = 400 ������. Use 60 mm concretecover.

Compute for the beam shown. Use psi and psi. Does the compression steel yield in this beam at nominal strength?

2- For the cross section shown: i) determine the cracked moment of inertia (ler) using n=8, and ii) using transformed-area method determine stresses in concrete and steel if subjected to a moment M = 150 ft-kips. As = 4.1 in ² Assume f. = 4,000 psi, and f, 60,000 psi. 14"-wide hole As 20" e 6 3* 60 13