As cement readily absorbs moisture from the atmosphere, it should be
stored in a dry place; if exposed to dampness it soon becomes lumpy, or
even a solid mass, and in this condition it is useless and should be
thrown away. The lumps caused by pressure in piling the sacks are not
injurious. They can be pulverized easily, thus distinguishing them from
those due to dampness.
Cement never should be stored on the ground. Build a raised platform for
it and keep it away from the sides of the shelter. As it is heavy, care
should be taken not to overload the supporting floor.