| Capital Projects Home Page |
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| Division 16 Electrical |
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| 16-4 | Lighting |
| A. | Lighting Intensities |
| 1. | The project shall meet the current requirements of Title 24 energy conservation standards. The owner's representative shall submit documentation of this compliance. Because Title 24 sets only minimum standards based on conventional technology, further lighting energy reduction shall be considered where possible. At an early design stage, submit feasibility and life-cycle costs for strategies to reduce lighting energy usage by 20% to 30% below Title 24 requirements. |
| 2. | General illumination levels shall be based on the latest standards published by the Illuminating Engineering Society of North America. Consult with Planning, Design and Construction (CP) for certain areas where lower illuminance is acceptable for energy savings. Lighting calculations shall be based on actual predicted reflectances in coordination with the architect. Where actual reflectances cannot be determined, use realistic maintained average values for ceiling, wall, and floor reflectances. The designer shall submit calculations and documentation of target illuminances. |
| 3. | Suggested values for initial average illuminance readings in typical spaces are as follows: classrooms - 45 fc, offices - 55 fc, laboratories - 65 fc, and circulation areas - 10 fc. |
| 4. | The Illuminating Engineering Society (IES) light levels recommended in its Lighting Handbook shall be used as a guide for campus outdoor lighting. Campuses shall also consider IES activity levels (high, medium, and low) in the design of lighting in open parking facilities. These activity levels reflect both vehicular and pedestrian activity. In open parking situations, the majority of a campus' activities are categorized as "low activity" ("Educational facility parking"). However, there may be some open parking situations that would be classified as "medium activity" (residential complex parking or cultural civic, or recreational events.") |
| 5. | Local blackboard lighting is normally undesirable. General lighting may be concentrated near blackboards for increased vertical illumination. |
| 6. | Check with the Physical Plant (PP), Utilities and Conservation Unit, for possible changes in illuminance or power density requirements, and for information about integrating the lighting system with the Campus Energy Management System. |
| B. | Landscape Development Provision |
| Include a conduit system to an exterior electric handhole and provide panelboard circuits in the building for landscape lighting. Consult with Planning, Design and Construction (CP) for sizing and location. |
| C. | Pathway Lighting Standards For Central Campus |
| 1. | Lamps: Philips metal halide 175W, phosphorus coated, vertical installation. No substitutions are allowed: this is the only known lamp with the proper Kelvin rating of 3200-3400. |
| 2. | Fixtures: Sentry Electric Corporation (185 Buffalo Avenue, Freeport, New York 11520, telephone (516) 379-4660). #SBP-175-MHPTA-BT-V cast aluminum decorative luminaire, black finish, Lexan diffuser globe wired for 175 watt metal halide lamp, 120-volt power supply with 3" decorative post adapter base. Paint tops black to eliminate uplight. Available with Type V (circular) or Type II (oval) refractors. |
| 3. | Poles: Cast iron fluted poles as provided by Phoenix Iron Works, Post Office Box 24112, Oakland, CA 94623, telephone (510) 465-9980 or Sentry cast iron pole 5C120-AYN-13. Special casting for University of California Berkeley campus. Factory prime and color to campus standards (Elephants Breath Gray). Set concrete bases flush with grade in planting areas. |
| D. | Circulation Area Lighting |
| 1. | Stairwell fixtures shall be easily accessible for maintenance and shall provide illumination in accordance with current IES recommendations. |
| 2. | Provide emergency egress lighting in each stairwell and corridor to meet minimum light level and duration requirements as required by latest edition of California Building Code. |
| 3. | Locate light switches for lobbies, corridors, stairwells and similar circulation areas to accommodate persons entering or leaving the building at night. Locate switches to turn on lights ahead and turn off lights behind as the person moves through the building. Provide an automatic switch at each elevator landing to control corridor lights to meet this requirement per elevator code requirements and, for example, diagram 517-30(2) of the NEC. |
| 4. | Design corridor light circuits so that a small number can be left on for night service and for extended building shutdowns, such as the winter holiday. This typically requires an active fixture at each change of corridor direction. The non-active fixtures shall be circuited to be controlled by a timeclock, photocell, or Energy Management System. See NEC, Article 517-32. |
| 5. | Provide appropriate circuiting and either photoelectric, timeclock, or Energy Management System switching for daylighted portions of circulation areas, so that fixtures in these areas will normally be off during the daytime. |
| E. | Lamps |
| Exceptions to the following standards must be approved by the Physical Plant (PP), Utilities and Conservation Unit. |
| 1. | Specify fluorescent or metal halide lamps unless otherwise approved. |
| 2. | The standard fluorescent tube is 4' rapid start, T-12, 3450-3500 Kelvin color temperature, bi-pin, energy-saver. T-8 lamps (3,500 K) shall be specified for new buildings and for large renovations. |
| 3. | Compact fluorescent lamps shall be used whenever possible in place of incandescent lamps. |
| 4. | High Intensity Discharge: |
| a. | Mercury vapor lighting fixtures shall not be specified. |
| b. | Metal halide lamps shall be coated type. |
| c. | High-pressure sodium lamps, unless otherwise approved in writing, shall be used only in areas of non-critical viewing tasks such as parking lots. Use color-corrected lamps where possible. |
| d. | Specify venture, GE/Sylvania, Phillips or equal. |
| 5. | All lamps shall be new and properly operating at time of acceptance of the electrical work. |
| F. | Lamp Ballasts |
| 1. | Fluorescent lamp ballasts for rapid-start lamps shall be true rapid-start, high-frequency solid state, high-power factor, class A with auto-resetting built-in thermal protection, such as manufactured by Magnetek-Triad, Electronic Ballast Technology (EBT) or approved equal. |
| 2. | Ballasts for 32 W, T-8 lamps shall be high-frequency solid state, high-power factor, class A with auto-resetting built-in thermal protection, such as manufactured by Magnetek-Triad, Electronic Ballast Technology (EBT) or approved equal. |
| 3. | Ballasts must be quiet operating, with provision for easy removal of defective or noisy units. Specify A sound rated ballasts, except as otherwise approved. |
| 4. | Ballasts shall meet State of California standards in effect for the project and other national standards if applicable to electronic ballasts. In addition, ballasts shall be UL-listed. |
| G. | Lighting Fixtures |
| 1. | Select lighting fixtures on the basis of energy efficiency, function, and aesthetic requirements. Coordinate the energy requirements of these guidelines, general fixture type, daylighting, and probable surface materials in the schematic design stage. The fixture selection, layout, power density calculations, and illuminance calculations shall be checked by the architect. |
| 2. | Large-cell parabolic fixtures, indirect lighting fixtures, or other approved low brightness fixtures may be required for spaces with video display terminals. Check with CP for design requirements. |
| 3. | Fixtures with four or more fluorescent lamps shall not be specified because of their inherent inefficiency. Consider fixtures manufactured with specular metal reflectors to improve efficiency. |
| 4. | Fluorescent fixture lenses shall be clear virgin acrylic, conical-prism, injection-molded. |
| 5. | Fixtures for special close work tasks shall illuminate the task area only. |
| 6. | Support all lighting fixtures to resist both gravitational and seismic forces in compliance with code requirements. See Division 9 for additional seismic requirements. |
| 7. | When mounting fluorescent fixtures to existing ceiling junction boxes, the junction box must be accessible without removal of the fixture. |
| 8. | Do not mount fixtures against combustible surfaces without approved spacers as listed in the UFC, the NEC, and the UBC. |
| 9. | Provide a grid, screen, panel, acrylic lens, or other device, to prevent a dislodged lamp from falling out of the fixture. |
| 10. | Fixtures shall be clearly and permanently marked with the UL label and the manufacturer's name and model number. |
| 11. | Provide local switching in all rooms except for special cases such as auditoriums, libraries, and theaters. Central switching for such spaces must comply with code requirements and be approved by the Physical Plant (PP), Utilities and Conservation Unit. |
| 12. | To conserve energy, switch all areas separately, and provide convenient switches for areas with different use patterns. Consider occupancy sensors for classrooms, circulation areas, lounges, and other spaces in which occupants do not feel ownership and are therefore not likely to turn off lights. |
| 13. | Check and coordinate lighting fixtures with other ceiling elements including fire sprinkler layouts, mechanical diffusers, grilles, speakers, smoke detectors, clearances to structure, insulation, ductwork and piping with the architect and mechanical engineer. Obtain approval from the Campus Fire Marshal for the combined system. |
| 14. | In remodel work that involves significant light fixture replacement, require contractor to provide University with copies of fixture invoices, to facilitate the University's applications for rebates from PG&E. |
| H. | Emergency Lighting Systems |
| 1. | In addition to code requirements, install emergency lighting systems where required for personnel safety. Provide central battery or engine generator type or separate battery-powered portable type depending on the application. Discuss with Planning, Design and Construction (CP). |
| 2. | Where emergency lighting or power circuits are installed, with provisions for a future emergency generator, provide an engine exhaust pipe. Extend from proposed or indicated future location to roof or other safe discharge. Size pipe for anticipated engine exhaust quantity without excessive backpressure on engine. Pitch any horizontal runs back and install drain valve. Provide separation, fire stopping, and acoustical/thermal isolation for all exhaust pipe within building in compliance with code and manufacturer's requirements. |
| I. | Emergency Exit Signs |
| Signs shall be electroluminescent exit signs by USI Prescolite, 1251 Doolittle Drive, San Leandro, California 94577, or equal. |
| J. | Emergency Power Generator Systems |
| The automatic transfer switch used to switch from manual power to generator power shall be 4-pole, 4-wire, dual-operator, type RMTD, as manufactured by Russ Electric power control systems. |
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