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1. Exit marking shall be by electrically powered "EXIT" signs with
battery back-up. Use of radioluminescent type signs is prohibited, except as
permitted in NAVFAC Design Policy Letter DPL-88-0008.
2.  Exposed insulation in concealed spaces of sprinklered buildings must
be specified to have a flame spread of 25 or less and a smoke developed rating
of 50 or less (including paper covering). This is to prevent the space from
being defined as a combustible concealed space which would require sprinkler
protection in accordance with NFPA 13. Acceptable types of insulation
blankets per Federal Spec HH-521F are Type I, Type II (Class A only), and Type
III (Class A only).
3. Emergency lighting shall be by battery powered emergency lights
connected to the supply side of the light switch in the area served, so that
lights will illuminate when power to the area served is lost, even if power
remains on in remainder of the building. Emergency lighting shall be provided
in all normally occupied buildings where artificial lighting is required for
normal use and occupancy.
4. All exterior paths of egress (balconies, stairways, etc.) shall be
enclosed with non-combustible material to prevent snow and ice accumulation.
5. High rise buildings are considered to be those buildings more than 75
feet, regardless of the reach of fire department ladders. However, automatic
sprinkler systems are required for all buildings greater than 4 stories, per
6. Combustible construction shall be avoided for new buildings, except
for small, light hazard buildings when approved by Code 4042.
7. For materials subject to delamination during a fire (such as plywood),
fire retardant paint shall not be considered a substitute for pressure
treating with fire retardant chemicals at the factory.  Do not use fire
retardent treated wood in lieu of required noncombustible materials.  Fire
retardant wood shall not be considered noncombustible.
8. Smoke detectors for elevator recall must be installed in accordance
with NFPA 72 series standards and must be part of the fire alarm system.
Provide detectors for recall in all machine rooms and lobbies. Detectors must
be arranged to recall the elevators to the designated level per ANSI A17.1 and
must also activate the fire evacuation alarm system.
9. When locating new hydrants, place them 3'-7' from the street, at least
50' from the building they are intended to protect. Ensure that there will be
at least one hydrant within 350' of the building, and a second within 500'.
Distances shall be measured using actual routes of fire apparatus travel over
all-weather (paved) surfaces.  If in doubt about route of travel, contact base
Fire Chief.
Attachment 21A
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