Civil Engineering Materials #$8\mathrm{.}6$

A concrete masonry unit has actual gross dimensions of$\frac{7-5}{8^{\text{'}\text{'}}}\frac{7-5"}{8^{\text{'}\text{'}}}\frac{7-5"}{8^{\text{'}\text{'}}}$ the unit is tested in a compression machine with the following results:

Failure load $=98,000lb$

Net volume of $348\mathrm{.}1i{n}^3$

Is the unit categorized as solid or hollow?

Calculate the gross area compressive strength.

Calculate the net area compressive strength.