Problem $1(6$ points$)$

$1\mathrm{.}1$ What are the objectives of conducting the compressive strength test on bricks? Why is it necessary to test bricks in both edgewise and flatwise orientations?

$1\mathrm{.}2$ A brick is subjected to a compressive strength test in the edgewise orientation. The brick has dimensions of $30mm60mm140mm.$ During the test, the maximum load at failure is recorded as $500$ kg $.$ Calculate the compressive strength of the brick in the edgewise orientation.

$1\mathrm{.}3$ A sample brick is subjected to a water absorption test. After $24$ hours of immersion in water, the weight of the brick is found to increase from $0\mathrm{.}5$ kg to $0\mathrm{.}9$ kg $.$ Calculate the percentage of water absorption and determine if the brick meets the standard limit $(15\%)$ for construction use.