CHAPTER 10: TECHNICAL CRITERIA
Table 10.1: Plumbing Connections
10.9.1 Temperature and Humidity Levels:
Design for a high level of thermal comfort by complying with ASHRAE 22-
1992, Addenda 1995 and installing permanent temperature and humidity
Space
Plumbing Connections
monitoring systems with operator controls, as described in LEED Version
2.0. Design to provide a high level of occupant control of airflow and tem-
Water play, classroom
Faucet and floor drain
perature both at and away from the building perimeter, as described in LEED
Sink (desirable)
Version 2.0.
Adult Toilet
Sink, toilet, floor drain
Laundry
Connections, drain, floor drain
Temperature and humidity must be maintained within ranges stated below.
Kitchen
Sink, disposal, floor drain
Temperature levels are measured at lower than normal heights above the
Janitor's Closet
Mop sink
floor in order to accommodate children. Children spend a great deal of time
Pre-School Activity Area
Floor drain (at water play) (desirable)
on the floor, therefore both temperature control and avoidance of drafts are
Food Preparation
Sink, disposal
very important. Maximum insulation of floors (depending on the project
Eating/Table Area
Drinking fountain
location), including perimeter insulation of floor slabs, is required. Heating
Children's Art Sink
Drain (floor drain desirable)
systems installed in the floor slab are not recommended for GSA buildings
Diapering Station
Sink*, drain (floor drain desirable)
due to the problems with maintenance and flexibility that they entail. The
Children's Toilet
Floor drain
following recommended guidelines state acceptable temperature and
Children's Handwashing Sink
Sink, drain (floor drain desirable)
humidity ranges (measured at 900 mm above the finished floor):
Children's Private Toilet
Sink, toilet, drains (floor drain desir-
Winter: 21 Degrees C; 35 percent minimum relative humidity.
able)
Summer: 24-26 Degrees C; 50 percent maximum relative humidity.
Play Yard
Hose bibb for water play, drain,
drinking fountain
Tamper-proof thermostats are to be located at a maximum 900 mm above
(optional, depending on center need)
the finished floor to monitor the temperature at the child's level. The optimum
*large
temperature control is zoned and should be appropriately adjusted for
different activity areas. For instance, infant areas may be more comfortable
10.9 Heating/Ventilation/Air Con-
at a 1-3 degree warmer temperature than other areas. The design A/E needs
to consider this issue and make recommendations for the optimal solution
ditioning
to heating and cooling distribution at the concept development stage.
Thermostats should be accessible to the center director or other designated
staff members.
The comfort and safety of the children and adults within the center are of
prime importance.
10.9.2 Ventilation Equipment:
In addition to heating and cooling equipment, a humidifier/dehumidifier may
According to the U.S. Department of Energy, schools could cut operating
be needed to meet required levels. Each space shall be supplied with a
costs up to 25% by conserving energy. Similar potential exists for child care
minimum of 15 liters/second of outside air for each occupant in order to
centers. Design decisions made up front for new facilities often reduce the
control odors and none of this air is to be returned to the rest of the building.
size of heating and cooling equipment, thereby adding first-cost savings to
To ensure comfort levels, the air motion in the occupied space shall not
the long-term savings earned by lower energy usage. Refrigerants used in
exceed 8000 mm per minute. Provide proper exhaust venting for range and
chillers should have zero ozone-depleting potential, as described in LEED
clothes dryer. Consider noise level, service, and efficiency when locating
Version 2.0.
equipment.
PBS-140 - July 2003
10-9
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