5.
MECHANICAL AND ELECTRICAL REQUIREMENTS.
a. Plumbing. Provide plumbing in accordance with NAVFAC DM-3.1 and DOD
4270.1-M criteria.
b. Heating and Ventilation. General heating and ventilation should be
provided in accordance with NAVFAC DM-3.3 and DOD 4270.1-M. Mechanical room
dimensions will be determined by specific system configuration and access
requirements.
c. Electrical. Electrical and communication facilities should be
provided under the following guidelines. (For additional design criteria, see
NAVFAC DM-4.1 and 4.7)
(1) Communications Provide telephone service entrances, telephone
cabinets, conduit runs, and outlet boxes for telephones. Locate telephones in
each office as stipulated in the design program. Provide outlets for public
telephones as required.
Special requirements for areas containing electronic equipment
are contained in DM-34, Section 6, and MIL-HDBK-1008.
(2) Lighting. Provide lighting in accordance with the design
criteria in DOD 4270.1-N and IES design criteria. Also refer to ASHRAE
Standard 90A-80. Use high-efficiency lamps as much as practicable. For
reading and writing tasks, the zonal cavity method can be used to select
fixtures and lamps in an energy-conserving manner. Review of product
literature will suggest the most beneficial placement of fixtures.
Consideration should be given to enhancing spaces with natural lighting
whenever appropriate. Even though it is not as efficient as fluorescent
lighting, selective incandescent task lighting may be suitable for use in
counseling areas to promote an informal, warm atmosphere. If daylighting is
used, consider controls which automatically adjust electric light levels and
save energy.
(3)
Power Requirements.
Provide power and control equipment as
follows:
(a) Convenience Outlets. For each separate office room with 400
square feet (37 m2) or less of floor area, provide at least one duplex
receptacle for each 12 lineal feet (3700 mm) of wall space. Receptacles
should be 20 amps-120 volts unless specifically noted. For the classroom/
conference room which is over 400 square feet (37 m2) provide at least four
duplex receptacles for the first 400 square feet (37 m2) and at least two
duplex receptacles for each additional 400 square feet (37 m2) or major
fraction thereof. Outlets should be placed at suitable locations to serve all
parts of each space. Circuits for convenience outlets should be separated
from telephone signal circuits. In large open areas, separate floor outlets
for telephone and signal circuits, for appliances, and for desk machines such
as dictaphones, electric typewriters, word processors, and calculators should
be provided. In spaces such as corridors, where the use of janitorial
equipment or other portable appliances may be anticipated, duplex receptacles
shall be provided in accordance with NFPA 70, National
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