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DG 1110-3-126
August 1976
3-3 Technological
a. An engine exhaust system is essential. It is recom-
mended that this be at least 8 inches in diameter and
installed under floors, preferably in trenches with remov-
Requirements
able steel covers for maintenance, Flexible conduits from
outlets at floor level can be connected to tailpipes or
engine. If underground ducts are impractical or too expen-
sive, an overhead exhaust system may be used. This means
that flexible connections must be brought down from
above at convenient locations. A forced convection fan
with automatic control and visual indicator is necessary to
reduce pressure in the system at all times.
b. Positive air movement through the work areas must
be provided to minimize carbon monoxide dangers. Local
climate conditions will influence heating, cooling, and
ventilation requirements. However, heating, air condition-
ing and ventilation shall conform to the applicable por-
tions of current editions of NFPA No. 88B, ASHRAE
Handbooks and DOD Construction Criteria Manual
)
Services
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