DG 1110-3-106
b. For general guidance on interior design, see DG
need to be resistant to acids, alkaline material, greases,
1110-3-122.
and solvents.
I. Criteria.
(2) Recommendations.
Table 4-3 lists outline criteria for designing
instructional shops.
a. For recommendations, see Figure 4-24. For example
color schemes called out in the figure, see the
Appendix.
Table 4-3 Criteria for Instructional Shops.
Space Criteria
Reference: Paragraph 4-4d(2)
Area
Environmental
Thermal
65F. (heating), mechanical ventilation for cooling
Temperature
10 cfm (minimum)
Outside air required/person
8 per hour (minimum)
Air changes
Negative
Air pressure
Lighting
30 fc. (maintained)
General lighting level
70, reference: IES Lighting Handbook Applications
Visual comfort probability
Volume
80-90%
Surface reflectance: Ceiling
40-60%
Walls
Yes
Daylighting
North or south
Window orientation
No
View in
Absorptive, NRC 50 (minimum)
Sound reflectance: Ceiling
Absorptive, NRC 25 (minimum)
Walls
Enclosing wall sound rating:
STC 40
Between shops and corridors
STC 50
Between shops and classrooms
Service Criteria
Electrical
110/ 120 V. Shops often require additional three-phase
Power
electrical power and 28 VDC for the simulated
operation of equipment. The electrical conduit system
serving shops should be designed so that additional
power sources may be developed as required.
4-24
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