UFC 4-211-01N
25 October 2004
event of operational failure. For hangar openings wider than 45 m (150 feet), a
personnel exit door will be provided in the center of the bay for a fire exit as
required by NFPA 409, Aircraft Hangars.
3-11.2.3
The fabric door provides greater flexibility in aircraft movement,
seals the hangar better against wind, rain and bird intrusion and more efficiently
uses the hangar maintenance space. Back-up power should be provided to
operate the fabric door in the event of loss of normal power.
3-12
PERSONNEL DOORS. Personnel doors will be insulated metal
doors and metal frames. Select metal doors and frames based on durability and
common usage for this type of activity. Pay particular attention to the selection of
the hardware for the doors. Consider the use of continuous hinges for high use
doors.
3-13
SECTIONAL OVERHEAD DOORS. Motorized sectional overhead
doors may be provided from the Hangar bays to the exterior. Doors should be
pre-finished and insulated.
3-14
OVERHEAD ROLLING SERVICE DOORS. Provide rolling service
doors in lieu of sectional overhead doors as needed. For exterior locations,
provide insulated doors. For interior doors provide non-insulated. Provide motor
operators as requested by the activity. Provide fire rated doors as required.
3-15
NATURAL LIGHT. Provide natural light as desired in the hangar
bay. Consider the use of clerestories, and/or windows. For hangar bays utilizing
light colored vertical lift fabric doors, natural light will be transmitted through the
fabric.
3-15.1
Translucent Panels. Natural light may also be provided by the
use of translucent panels and should be considered for areas with high-heating-
degree days.
3-15.2
Windows. Windows, if used, may be fixed thermally broken pre-
finished aluminum with tinted, low e glass. Use laminated glass and comply
with UFC 4-010-01 in portions of the building that qualify as inhabited.
3-16
LOUVERS. Provide louvers as required by the mechanical system.
Choose anodized aluminum with integral bird screens. Use louvers of the
drainable design type.
3-17
HANGAR BAY FLOOR FINISH. Use a high build epoxy coating
system on the hangar bay floor, as specified in MPI 212, Thin Film Flooring
System for Aircraft Maintenance Facilities. MPI 212 requires a two or three coat
flooring system with reflective topcoats consisting of a primer and a topcoat or
primer, mid-coat and topcoat. The mid-coat and topcoat must be of the same
material. This system is appropriate for use in aircraft maintenance hangars,
15
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