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from the corridors shall be transferred as make up by door
louvers and/or undercuts.
3.
The locker room shall receive ducted supply air and shall be
treated as a dedicated temperature control unit. All air
supplied to the locker rooms (and make up air transferred from
the corridors to maintain negative pressure) shall be
exhausted outdoors through the toilets/showers adjoining the
locker room.
4.
The soiled storage spaces shall receive ducted supply air and
shall be maintained under negative pressure (15%) by drawing
room air through the door undercut.
2.6 NOISE CRITERIA
A. OCCUPIED SPACES:
Table 2 - 3 Occupied Spaces
Area
Maximum NC
Conference Rooms
NC 35
Corridors
NC 40
Lobby
NC 40
Large Offices & Computer
NC 40
Rooms
Small Private Office
NC 35
Notes:
1.
The above NC levels must be attained in all octave bands.
2.
The above NC levels may be increased for the areas
equipped with fan coil units. The designer shall submit an
analysis showing the expected noise levels for the prior
approval of VA.
3.
The systems must be engineered and the use of acoustic
sound lining and sound attenuators should be considered to
achieve the design sound levels.
B. COOLING TOWERS: Select and locate the cooling towers to avoid
problems with:
1. Noise
2. Vibrations
3. Aesthetics
4. Drift
5. Air Recirculation
2.7 VIBRATION CRITERIA
Refer to the VA Master Specifications Section 15200, NOISE AND
VIBRATION CONTROL and Supplement, ATTACHMENT NO. 5.
2.8 SEISMIC BRACING CRITERIA
Refer to Article 8 and Construction Standard CD-54.
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