Question

Concrete colums are constructed with reinforcing steel in them to make them stronger and more ductile. The reinforcing bars are designated by size, with the size being the diameter in eights of an inch. For example, a #5 bar is 5/8 inch in diameter. A 10 inch square concrete column is constructed with eight #5 bars. A 60000 pound load is applied to this column. The modulus of elasticity of the reinforcing steel is 29x10⁶ psi, while the modulus of elasticity of the concrete is 4.4x10⁶ psi.

1. What is the area of the concrete?
(include units with answer)

2. What is the stress in the steel?
(include units with answer)

3. What is the stress in the concrete?
(include units with answer)

Answer 1