DG 1110-3-106
Table 4-13 Criteria for Study Areas.
Space Criteria
90 s.f.
Area
10 ft.
Ceiling Height
50 psf, 70 psf with partitions (minimum)
Floor Loading
Environmental
Thermal
Temperature, maintained operation
50-60%
Relative humidity
10 cfm (minimum)
Outside air required/person
6 per hour (minimum)
Air changes
40 cfm (maximum)
Air movement
Positive
Air pressure
35% (minimum using NBS dust spot test)
Air filtration efficiency
Lighting
30 fc. (maintained)
General lighting level
50 fc. (maintained)
Task lighting level
70, reference: IES Lighting Handbook Applications
Visual comfort probability
Volume
80-90%
Surface reflectance: Ceiling
40-60%
Walls
20-40%
Floor
Yes
Daylighting
North or south
Window orientation
Enclosing sound wall rating:
STC 40
Between preparation spaces and corridors
STC 45
Between preparation spaces and classrooms
Absorptive, NRC 50 (minimum)
Sound reflectance: Ceiling
Absorptive, NRC 25 (minimum)
Floor
Service Criteria
Electrical
110 V
Power
Telephone/intercom clock control as programmed
Signal (low voltage)
Reference: paragraph 3-2g
Adaptability
4-66
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