Careful consideration must be taken in the design of lighting systems regarding servicing of the fixtures and replacement of tubes or bulbs. Lighting calculations should show the effect of both general and task lighting assuming that task lighting where it is used has compact fluorescent tubes.Īccessibility for Servicing. Power allowances for normal system receptacles include task lighting as shown in Table 6-1. Lighting design must comply with ASHRAE/IES 90.1 as modified by Table 6-4. Ceiling lighting branch circuit capacity, however, should be sufficient to provide levels in Table 6-3 for occupancy changes.Įnergy Efficient Design. In office areas with system furniture, assume that under cabinet task lighting is used and provide general illumination of about 300 Lux (30 footcandles) on the work surface. For those areas not listed in the table, the IES Lighting Handbook may be used as a guide. For lighting levels for interior spaces see the values indicated in Table 6-3. Interior LightingConsideration should be given to the options offered by direct lighting, indirect lighting, down lighting, up lighting and lighting from wall- or floor-mounted fixtures. Lighting should be designed to enhance both the overall building architecture as well as the effect of individual spaces within the building.
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