06-06
pads, lintel supports around openings, and platforms for access to
HVAC equipment and supports for cooling towers and other large
mechanical equipment.
C. Electrical drawings and specifications provide motor starters and
disconnectors, not furnished as part of HVAC equipment, smoke
detectors (duct and/or space mounted), all power wiring to HVAC
smoke dampers, motors, heating cable, and controls for winterized
piping.
D. Plumbing drawings and specifications provide all domestic water
make-up supply and drain outlets.
2. BASIC DESIGN PARAMETERS
2.1 CLIMATIC CRITERIA
The capacity calculations for the HVAC systems shall be based on the
outdoor design conditions listed in Supplement, Attachment No. 6. The
designer shall use the following values:
TABLE 2.1
A. Summer:
1 percent design dry bulb.
1 percent design wet bulb.
B. Winter:
99 percent design dry bulb.
Note: The above wet bulb temperature is not the mean coincident
value. It is the design value separately listed in the same table.
C. The specified design wetbulb temperature for cooling tower shall
be one degree higher than the ASHRAE 1% outdoor design wetbulb
temperature.
2.2 INDOOR DESIGN CONDITIONS (DEGREE F DRY BULB (DB) AND PERCENT
RELATIVE HUMIDITY (% RH):
TABLE 2.2
SUMMER
WINTER
ROOM OR AREA
DB%
RH
DB%
RH
Auditoriums
76
60
72
--
Bathrooms & Toilet Rooms
78
--
78
--
Dining Rooms
78
50
72
30
Electrical Equipment
Ventilation
50
--
Rooms
Only
Elevator Machine Rooms
94
--
50
--
Emergency Generator
110
--
40
--
Kitchens
82
60
70
--
Locker Rooms
78
50
72
30
Lounges
78
50
72
30
3
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