1.Find the area of steel reinforcement required for a concrete T-beam for the following data; f'c = 3 ksi, fy=50 ksi,d=28 in, t= 6 in., bw= 16 in., bf= 60 in., and the section sustains a factored bending moment of Mu=360 kip ft
2.a rectangular concrete beam has f'c=3000 psi and steel with fy=40ksi. Select the beam dimensions and reinforcement for a balanced section if the beam sustains a moment as a result of dead load of 60 kip-ft and a moment as a result of live load of 90 kip-ft
3.The airflow through a hi-volume sampler was recorded as 60 cu. ft. / min. at the beginning and 46 cu. ft. / min. at the end of a 24hr. sampling period. The filter weighted 9.80g before and 10.35g after sample collection. What was the suspended particulate concentration?