Question

for problem 6.20, please help me understand how they come up with those numbers for the area: A=(9x12-3x3)/5 ???

and how is Cc = (3-0.564) ??

ans how is fs = (0.67x60000) ??

explain how they come up with those numbers for Area, Cc, and fs, please, thank you!!

3 in -12 in For Problems 6.19 to 6.21, same questions as for Problems 6.17 and 6.18, but assume interior exposure. Problem 6.19 (Ans. 0.0129 in. < 0.016 in. max: ACI spacing 9.26 in.) Problem 6.2 #5 bars in the crack require 16 in. 6#11 22 in. 3 in. 3 in 3 in 3 in.15 in. Problem 6.20 52 in. 4 in. 22in. 32 in. 5#9 3 in. 3 in. ←12in

Answer 1

ra hn cz3 5 x G00 x60000