Consider a singly reinforced concrete beam with a base dimension of b= 12in and d=20in. Assume all bars are located in one row. Use Grade 60 steel and 5ksi concrete. Find the nominal flexural strength and the design strength for the following cases
a) As= 2#6 bars (b x d=12x20 in, fy=60ksi, and fc'=5ksi)
b) As= 2#10 bars (b x d=12x20 in, fy=60ksi, and fc'=5ksi)
c) As= 5#8 bars (b x d=12x20 in, fy=60ksi, and fc'=5ksi)
d) b x d=6x20 in (As= 2#10 bars, fy=60ksi, and fc'=5ksi)
e) b x d=24x20 in (As= 2#10 bars, fy=60ksi, and fc'=5ksi)
f) b x d=36x20 in (As= 2#10 bars, fy=60ksi, and fc'=5ksi)
g) b x d=12x15 in (As= 2#10 bars, fy=60ksi, and fc'=5ksi)
h) b x d=12x30 in (As= 2#10 bars, fy=60ksi, and fc'=5ksi)
i) b x d=12x40 in (As= 2#10 bars, fy=60ksi, and fc'=5ksi)
j) fc'=3ksi (b x d=12x20 in, fy=60ksi, and As= 2#10 bars)
k) fc'=6ksi (b x d=12x20 in, fy=60ksi, and As= 2#10 bars)
l) fc'=8ksi (b x d=12x20 in, fy=60ksi, and As= 2#10 bars)