10 January 2005
including change 3, 13 April 2007
shop air outlets are required per ancillary space. Verify actual
requirements for each site.
e. Locate the intake for breathing air in an uncontaminated area.
Noise and Vibration Control.
Design mechanical systems and equipment to limit noise and vibration in
accordance with UFC 3-450-01: Design: Noise and Vibration Control. Design
hangar bay for maximum 75 dBA space average. Provide sound traps to
attenuate fan noise down to this level. Noise levels of 55 dBA in the hangar bay
area with the ventilation system operating at maximum airflow have been
achieved with careful design attention to fan and duct noise characteristics.
Outdoor noise levels should not exceed 75 dBA and should comply with local
Provide electrical systems in accordance with UFC 3-520-01, Interior Electrical
Systems and as defined in UFC 4-211-01N. Electrical equipment in the hangar
bay should be waterproof when deluge sprinkler protection is provided to prevent
equipment damage in the event of testing or accidental discharge of the deluge
Electrical installations in the following areas should meet the requirements in
NFPA 70, National Electrical Code for the specific hazardous (classified)
Paint and chemical mixing rooms,
Paint equipment cleaning room,
Paint storage room.
The electrical requirements for lighting should be as follows:
Interior lighting in the main hangar bays should provide 1076 lux
(100 footcandles) measured 0.76 meters (30 inch) above the floor
using metal halide fixtures. Future aircraft finishes may require
other types of lights. Lighting intensities elsewhere are to be in
accordance with UFC 3-530-01, Interior and Exterior Lighting and