The following table shall be used in determining the illumination levels for various office tasks and locations, the column at right indicating acceptable range of footcandles required:
TABLE I
Description | Acceptable Range of Footcandles on the Task |
1. General Offices | |
General Office Work | 56-70 |
Accounting, Bookkeeping | 120-150 |
Drafting & Designing | 120-150 |
Private Offices | 56-70 |
2. Conference Rooms | 1/2-70* |
3. Corridors, Elevators, Escalators, Stairways | 16-20 |
4. Lobbies, Reception Areas | 10-30 |
5. Washrooms | 24-30 |
*More than one lighting system and/or dimming area desirable
Not less than 1/5 the level of nearby offices
May be more when planned for transition with daylight or other areas
34 Pa. Code § 27.15