LIGHTING DESIGN – FOOTCANDLE …

1 LIGHTING DESIGN FOOTCANDLE RECOMMENDATIONS. Currently Recommended Illuminance Categories &. Illuminance Values For LIGHTING DESIGN Target Maintined Levels The tabulation that follows is a consolidated listing of current illumi- This table has been divided into the six parts for ease of use. Part I. nance recommendations. This listing is intended to guide the LIGHTING provides a listing of both Illuminance Categories and Illuminance designer in selecting an appropriate illuminance for DESIGN and evalu- Values for generic types of interior activities and normally is to be ation of LIGHTING systems. used when Illuminance Categories for a specific Area/Activity cannot be found in Parts II and III.

2 Parts IV, V and VI provide target maintained Guidance is provided in two forms: (1), in Parts I, II, and III as an Illuminance Values for outdoor facilities, sports and recreational Illuminance Category, representing a range of illuminances and (2), in areas, and transportation vehicles where special considerations parts IV, V and VI as an Illuminance Value. Illuminance Categories are apply. represented by letter designations A through I. Illuminance Values are given in lux with an approximate equivalence in footcandles and as In all cases, the recommendations in this table are based on the such are intended as target (nominal) values with deviations expect- assumption that the LIGHTING will be properly designed to take into ed.

3 These target values also represent maintained values. account the visual characteristics of the task. I. Illuminance Categories and Illuminance Values for Generic Types of Activities in Interiors RANGES OF ILLUMINANCES. TYPE OF ACTIVITY CATEGORY LUX FOOTCANDLES REFERENCE WORK-PLANE. Public spaces with dark surroundings A 20-30-50 2-3-5. Simple orientation for B 50-75-100 5-7,5-10. short temporary visits General LIGHTING throughout spaces Working spaces where C 100-150-200 10-15-20. visual tasks are only occasionally performed Performance of visual tasks of D 200-300-500 20-30-50. high contrast or large size Performance of visual E 500-750-1000 50-75-100.

4 Tasks of medium contrast or small size Illuminance on task Performance of visual F 1000-1500-2000 100-150-200. tasks of low contrast or very small size Performance of visual G 2000-3000-5000 200-300-500. tasks of low contrast and very small size over a prolonged period Illuminance on task, obtained by a Performance of very H 5000-7500-10000 500-750-1000 combination of prolonged and exacting general and local visual tasks (supplementary LIGHTING ). Performance of very I 10000-15000-20000 1000-1500-2000. special visual tasks of extremely low contrast and small size T 13. II. Commercial, Institutional, Residential and Public Assembly Interiors Area/Activity Illuminance Area/Activity Illuminance Area/Activity Illuminance Area/Activity Illuminance Category Category Category Category Air terminals (see Food service facilities Examination and Post-anesthetic recovery room17.)

5 Transportation terminals) Dining areas treatment rooms17 General18 ..E. Cashier ..D General ..D Local ..H. Armories ..C1 Cleaning ..C Local ..E Pulmonary function Dining ..B6 Eye surgery17 ..F laboratories17 ..E. Auditoriums Food displays (see Fracture room17 Radiology suite17. Assembly ..C1 Merchandising spaces) General ..E Diagnostic section Social activity ..B Kitchen ..E Local ..F General18 ..A. Gasoline stations Inhalation therapy ..D Waiting area ..A. Banks (also see Reading) (see Service Stations) Laboratories17 Radiographic/. Lobby Specimen collecting ..E fluoroscopic room ..A. General ..C Graphic DESIGN and material Tissue laboratories.

6 F Film sorting ..F. Writing area ..D Color selection ..F11 Microscopic Barium kitchen ..E. Tellers stations ..E3 Charting and mapping ..F reading room ..D Radiation therapy section Graphs ..E Gross specimen review ..F General18 ..B. Barber shops and Keylining ..F Chemistry rooms ..E Waiting area ..B. beauty parlors ..E Layout and artwork ..F Bacteriology rooms Isotope kitchen, Photographs, moderate General ..E general ..E. Conference rooms detail ..E13 Reading culture plates..F Isotope kitchen, Conferring ..D Hematology ..E benches ..E. Critical seeing (refer to Health care facilities Linens Computerized individual task) Ambulance (local).

7 E Sorting soiled linen ..D radiotomography section Anesthetizing ..E Central (clean) Scanning room ..B. Depots, terminals and stations Autopsy and morgue17,18 linen room ..D Equipment maintenance (see Transportation terminals) Autopsy, general ..E Sewing room, general ..D room ..E. Autopsy table ..G Sewing room, work area ..E Solarium Drafting Morgue, general ..D Linen closet ..B General ..C. Mylar Museum ..E Lobby ..C Local for reading ..D. High contrast media; india Cardiac function lab ..E Locker rooms ..C Stairways ..C. ink, plastic leads, soft Central sterile supply Medical illustration Surgical suite17. graphite leads.

8 E3 Inspection, general ..E studio17,18 ..F Operating room, Low contrast media: Inspection ..F Medical records ..E general18 ..F. hard graphite leads ..F3. At sinks ..E Nurseries17 Scrub room18 ..E. Vellum Work areas, general ..D General18 ..C Instruments and sterile High contrast ..E3 Processed storage ..D Observation and supply room ..D. Low contrast ..F3 Corridors17 treatment ..E Clean up room, Tracing paper Nursing areas day ..C Nursing stations17 instruments ..E. High contrast ..E3 Nursing areas night ..B General ..D Anesthesia storage ..C. Low contrast ..F3 Operating areas, delivery, Desk ..E Substerilizing room ..C. Overlays2 recovery, and laboratory Corridors day.

9 C Surgical induction room17,18 ..E. Light table ..C suites and service ..E Corridors night ..A Surgical holding area17,18 ..E. Prints Critical care areas17 Medication station ..E Toilets ..C. Blue line ..E General ..C Obstetric delivery suite17 Utility room ..D. Blueprints ..E Examination ..E Labor rooms Waiting areas17. Sepia prints ..F Surgical task LIGHTING ..H General ..C General ..C. Handwashing ..F Local ..E Local for reading ..D. Educational facilities Cystoscopy room17,18 ..E Birthing room ..F7. Classrooms Dental suite17 Delivery area Hospitals (see Health care facilities). General (see Reading) General ..D Scrub, general.

10 G. Drafting (see Drafting) Instrument tray ..E General ..G Kitchens (see Food service facilities). Home economics Oral cavity ..H Resuscitation ..G. Science laboratories ..E Prosthetic laboratory, Post-delivery recovery Lecture rooms general ..D area ..E. Audience (see Reading) Prosthetic laboratory, work Substerilizing room ..B. Demonstration ..F bench ..E Occupational therapy 17. Music rooms (see Reading) Prosthetic laboratory, Work area, general ..D. Shops (see Part III, local ..F Work tables or benches ..E. Industrial Group) Recovery room, general ..C Patients rooms17. Sight saving rooms ..F Recovery room, General17 ..B. Study halls (see Reading) emergency Observation.