07.B Lighting Levels.
07.B.01 While work is in progress, offices, facilities, accessways, working areas, construction roads, etc., must be lighted by at least the minimum light intensities specified in Table 7-1.Illumination readings must be taken and recorded whenever proper lighting of an area is in question. A calibrated light meter must be provided, maintained and used as necessary to provide illumination readings.
| Facility or Function | Lux | Foot-candles (lm/ft2) |
|---|---|---|
| Accessways - general indoor - general outdoor - exitways, walkways, ladders, stairs |
55 33 110 |
5 3 10 |
| Administrative areas (offices, drafting and
meeting rooms, etc.)
|
540 | 50 |
| Chemical laboratories | 540 | 50 |
| Construction areas - general indoor - general outdoor - tunnels and general underground work areas (min 110 lux required at tunnel/shaft heading during drilling, mucking, and scaling) |
55 33 55 |
5 3 5 |
| Conveyor routes | 110 | 10 |
|
Dam Operating Areas (Interior) -Tunnels and underground work areas -Control Stations |
55 150 |
5 15 |
| Docks and loading platforms | 33 | 3 |
| Elevators, freight and passenger | 50 | 5 |
| Temporary Electrical Panels (Interior) | 300 | 30 |
| Temporary Electrical Panels (Exterior) | 50 | 10 |
| First-aid stations and infirmaries | 300 | 30 |
| Maintenance/operating areas/shops - vehicle maintenance shop - carpentry shop - refueling area, outdoors - shops, fine - medium detail work - welding shop |
300 110 55 540-325 300 |
30 10 5 50-30 30 |
| Mechanical/electrical equipment rooms | 110 | 10 |
| Outdoor parking areas | 33 | 3 |
| Toilets, wash, and dressing rooms | 110 | 10 |
| Visitor areas | 215 | 20 |
| Warehouses and storage rooms/areas - indoor rack storage - outdoor storage |
270 33 |
25 3 |
| Work areas – general (not listed above) | 325 | 30 |
07.B.02 Office lighting must be a minimum of 50 foot-candles (lm/ft2) or 540 luminance (lx) at the working surface, in accordance with the Illuminating Engineering Society of North America (IESNA) Handbook, RP-1. In office areas, attention must be paid to the control of glare.
07.B.03 Roadway lighting must be in accordance with IESNA RP-8.
07.B.04 Marine lighting must be in accordance with American Bureau of Shipping, Guide for Crew Habitability on Ships.
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7-2. What is the minimum illumination for office lighting?
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