CEMP-E
TI 810-10
1 February 1999
percent outside air. Direct the discharged air to cover the entire floor area to break up explosive
pockets.
Provide motor-operated fresh air dampers for 100 percent outside air when desired. The
capacity of heater fans will provide not less than six air changes per hour based on an artificial
ceiling height of 5 meters (15 ft). In alert hangers, provide mechanical exhaust ventilation
consisting of not less than 30 air changes per hour for control. In climates with winter design
temperatures below -12 degrees C (10 degrees F) or where annual snowfall exceeds 50 cm (20
inches), provide snow-melting coils circulating heated antifreeze solution under hangar door
tracks.
Table 4-1. Heating System--Hangars.
Outside design temperature degrees C db
System Type
(degree. F db))
-18 degrees C (0 degrees F) and below
Radiant heating will be installed in the floor
slab of the hangar area to provide 50% of the
requirement, supplemented by floor-type air-
handling units.
Between -17 degrees C and 4 degrees C (1
Floor-type air-handling units will be provided.
degrees F and 40 degrees F).
Overhead and unfired unit heaters may be
used to supplement floor-type heaters where
hangar width is greater than 45 meters (150
ft).
Above 4 degrees C (40 degrees F).
None required.
Note: Floor-type air-handling units will be arranged to draw warm air from the top of the hangar
for distribution at occupied level.
b. Aircraft Maintenance Shops (Avionics). Where effective, evaporative cooling may be
used. Provide air conditioning for those functional areas where required for quality control of
equipment, material, and task. In all cases, localized or spot air conditioning may be provided at
individual workstations; however, the entire shop area will not be air conditioned.
4-13. STORAGE FACILITIES.
a. General Purpose Warehouses. Do not heat warehouses used to store materials not
subject to freezing. For warehouses containing materials subject to freezing, design heating
systems to maintain an inside winter temperature of 4 degrees C (40 degrees F). In warehouse
areas with active employment, temperatures of 13 degrees C (55 degrees F) will be maintained.
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