If properly opened, windows serve the purpose very well.
-- The windows on the windward side should be opened at least 6
inches from the bottom, allowing cool air to enter.
-- Windows on the opposite or leeward side should be opened at least
6 inches from the top, allowing the warm air to escape.
The rate of air change will vary with the wind velocity, outside temperature,
and activity within the billet.
It may be regulated by the amount of open window space.
For practical purposes, it is better to open several windows slightly
than one widely.
Figure 3-1. Construction of cubicles
(Note also head-to-foot arrangement of adjacent beds.)
c. Ventilation and Activity in a Room. It should be noted that the degree of
activity in a room is an important consideration for determining the amount of ventilation
required for good health. The greater the activity, the more ventilation needed. For
example, more ventilation is needed during the day than at night.
(1) Ventilation During Cold Weather at Night. During extremely cold weather
at night, the heating system may provide adequate ventilation without opening windows.
If the windows are opened, the result may be a loss of heat and thus a lowering of the
resistance to infection of the soldiers housed within. Just the simple common cold may
put the entire billet population on the sick list.