3.
ARCHITECTURAL AND STRUCTURAL REQUIREMENTS. Architectural requirements
are given in NAVFAC DM-l and as follows:
a.
Structure and Walls. The building is to be of modular steel girder
construction with insulated concrete masonry unit (CMU) walls, insulated
preformed (corrugated) metal walls, or a combination of the two.
b.
Roof Assembly. The roof shall be insulated metal panels or insu-
lated built-up roofing assemblies which meet the requirements of Underwriters'
Laboratories Building Materials Directory for fire-acceptable roof deck
construction or Factory Mutual Approval Guide for noncombustible roof deck
construction.
c.
Floors.
(1)
General Repair Bays. Concrete floor with hardener shall be
provided.
(2)
Wash and Steam Cleaning Bays. Concrete floor that slopes 1
inch in 8 feet to floor drain shall be provided.
(3)
Dynamometer Test Bay. Vibration treatment shall be provided
for floor and foundation.
(4)
Battery Room. The battery room shall be designed in accordance
with criteria in this manual, Section 5, Part 6.
(5)
Aprons. Concrete aprons sloped to drain shall be provided.
d.
Overhead Doors. Electrically operated insulated overhead doors
shall be specified for general repair bays and other direct shop support
areas. The width and height of the door openings shall be sized to permit easy
passage of the vehicles that are to be maintained in the areas. Provide a
means to manually operate doors in the event of power failure.
e.
Personnel Doors. Outward swinging insulated doors shall be
provided as required by Life Safety Code, NFPA 101.
f.
Paint and Lettering Bay. In areas where spray application of paint
is done, the area shall be in accordance with Spray Application Using
Flammable and Combustible Materials, NFPA 33.
4.
MECHANICAL REQUIREMENTS.
a.
Heating. Heating shall be provided in accordance with NAVFAC
DM-3.3. When a steam system is used for heating, if steam pressure is ade-
quate, the piping arrangements shall be extended to the steam cleaning and
wash bay to eliminate the need to operate a separate system in the winter
months.
b.
Ventilation. Ventilation shall be provided in accordance with
NAVFAC DM-3.3. if the facility contains a paint and lettering bay, ventilation
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