SECTION 1204 TEMPERATURE CONTROL
Delete this section in its entirety and replace with the following:
1204.1 Equipment and Systems. For temperature and comfort control requirements, refer to IMC Section 309.
SECTION 1205 LIGHTING
Add the following sentence to the end of the paragraph:
1205.1 General. Daylight is not permitted in the PCC.
Delete this paragraph in its entirety and replace with the following:
1205.2 Daylight and Views.
1. Building occupants shall be provided with daylight and views in accordance with the Indoor Environmental Quality requirements of the sustainability rating system identified in OBO-ICS IBC Section 101.
Exception. Where superseded by other OBO project contract requirements.
2. Provide the following minimum levels of daylight : A. Daylight 75% of spaces.
Delete this subsection in its entirety and replace with the following:
1205.3 Electrical Lighting. Care shall be taken in the design to have a smooth transition between the task and ambient lighting levels. The Illuminance levels here include task lighting that may be provided as part of the furniture package. Electrical lighting shall be provided that is adequate to provide an average illuminance as indicated in Table 1204.3 at a height of 750 mm above floor level.. The designed average level of illuminance in the general office area shall be 540 lux (50 footcandles) maintained on the work-plane. This total illuminance is made up of 320 lux (30 footcandles) from the ambient system and an additional 220 lux (20 fc) from the task lighting.
1205.3.1 Illuminance Requirements
1. General Office Area: The overhead ceiling mounted luminaires shall be controlled with automatic daylight dimming with occupancy sensors. The Contract Designer shall obtain information regarding the characteristics of the task/modular furniture system lighting from OBO/PDCS through the COR, and coordinate the general illuminance with task/modular furniture system lighting to provide a design illuminance of 320 lux (30 footcandles) from the ambient system and an additional 220 lux (20 fc) from the
maintained with lighting for modular furniture.
2. MSG Post 1 lighting shall be fluorescent and the lighting output shall be dimmer controlled. The dimmer shall provide continuous dimming range from one percent to one hundred percent brightness. Provide 540 lux (50 footcandles) general illuminance at the full brightness level.
TABLE 1205.3 (1) AVERAGE ILLUMINANCE LEVEL
Space Maintained Average Illuminance at Task
Lux Footcandles
Corridor - Lighting at combination locks 110 (10)
Lunch Room 110 (10)
1205.3.2 Luminaires. For spaces not covered in Table 1205.3 (1), provide maintained Lux (foot-candle) levels appropriate for the task and as approved by the COR based on input from OBO/PDCS/DE. IES recommendations will be used as resource material in selecting these levels. Specify fluorescent lamps as the principal interior lighting source.
1205.3.2.1 Luminaires. Ballasts shall be thermally protected as required by NFPA 70. Specify luminaires that use controlling elements (lens, louvers, reflectors, etc.) that provide the best utilization of emitted light at the task location.
1205.3.3.2 Luminaire and Lamp Types
1. New or Improved Lighting Products or Systems: The Contract Designer is encouraged to utilize new or improved light sources which may benefit DOS in providing more suitable or energy efficient lighting, or life cycle cost savings. Contractor shall submit a substitution request for approval prior to the incorporation of such products.
2. Pendant Mounted Lighting: The use of 150mm x 2400mm and 150mm x 1200mm luminaires with T-8 or T-5 HO fluorescent for general office lighting is required. Distributions range from 70-90% UP and 10% - 30% DOWN. Use electronic dimming ballasts.
3. Ceiling Recessed Luminaires: Use 600mm x 1200mm semi-indirect troffer with electronic program-start ballast.
4. Ceiling Recessed Luminaires: Use 100mm x 1200mm wallwasher with asymmetric distribution and program-start ballasts.
5. Ceiling Recessed Luminaires: Use 150mm round open downlight with aluminum specular anodized reflector and program start ballast.
6. Cove Light: Use LED covelights with asymmetric distribution and electronic dimming driver.
7. Wall Mounted Luminaire: Use a 1250mm linear indirect luminaire with asymmetric distribution and electronic dimming ballast.
8. Surface Mounted Decorative Luminaires: Sizes range from 527mm to 737mm diameter. Use compact fluorescent lamps with electronic program-start ballast.
9. Track Mounted Accent Luminaire: Use Adjustable IR tungsten halogen accent lights with integral transformer.
10. Downlighting and Accent Lighting: Use compact fluorescent or LED luminaires for downlights and accent lighting.
11. High Intensity Discharge (HID) Sources: Use induction sources for large interior utility spaces with relatively high ceilings, e.g., loading docks and garages. Induction lamps have a very long life and are a good source of white light.
12. Interior Lighting Systems: The use of high efficiency lamps and electronic ballast systems are required for interior lighting systems.
13. Color of Light Sources: Specify fluorescent lamps with a color temperature of 3500K.
1205.3.2.2 Broad Band Filters. Provide broad band filters for suppression of radio interference noise that may be conducted through power line fluorescent fixtures in all shielded areas.
1205.3.2.3 Incandescent Fixtures. Incandescent fixtures are not permitted without prior approval of OBO/PDCS/DE/EE through the COR.
Exception: Representational Spaces lighting may be a combination of fluorescent and IR tungsten halogen.
1205.3.2.4 Emergency Lighting
1. Minimal Emergency Illuminance: Battery powered emergency lights shall be provided for minimal emergency Illuminance to evacuate personnel and to insure orderly shutdown of equipment in the Embassy buildings should failure of the normal power and the auxiliary generator occur. The design must be in accordance with NEC Articles 700 and 701, NFPA 101, and the applicable section of the IES Lighting Handbook.
2. Placement: Battery operated emergency lights shall be furnished in all large open office spaces, warehouses, machinery and electrical rooms, gatehouses, UPS rooms, PBX rooms, generator rooms, stairwells, hallways and other public areas such as lobby, waiting rooms, conference rooms, and in public foyers to provide Illuminance for a minimum of 90 minutes.
3. Battery powered emergency lighting shall conform to UL 924 requirements for "unit Equipment" with sealed rechargeable batteries rated for 10 year life.
4. Charger shall be fully automatic solid-state type, with a sealed transfer relay. The unit shall automatically turn the lamp on when supply circuit voltage drops below 80% of nominal, protect battery from damage, recharge battery in shortest time, and maintain the charge when normal voltage is restored.
1205.3.2.5 Exit Signs. Use LED type and in accordance with NFPA requirements with red lettering on white background unless otherwise required by the applicable local law.
1205.3.3 Controls
1. Levels of Illuminance: Where luminaires have three, four or more lamps, dim lamps continuously or switch the lamps symmetrically for two or three levels of illuminance. Provide automatic daylight dimming for luminaires adjacent to windows to achieve a uniform lighting level with daylighting.
2. Three or Four-Way Switching: Provide three- or four-way switching or dimming combination of all room lights where two- or three-room entrances are not immediately adjacent to each other.
3. Automatic Controls: Occupancy sensors shall be used to control lighting in hallways, open bay areas and other areas in the interest of energy conservation. Dual technology occupancy sensors will be required in lieu of ultrasonic motion sensors in Controlled Access Areas.
4. Architectural Lighting Controls: Scene dimming in combination with daylight dimming and occupancy sensors.
SECTION 1207
SOUND TRANSMISSION AND NOISE REDUCTION
Add the following subsection:
1207.4 Noise Restrictions for Equipment
1. External noise levels at the site boundary of the facility shall comply with the host country’s noise laws and regulations. When local standards do not exist, noise shall not exceed 55 dB (daytime) and 45 dB (nighttime) using the “A-Weighted Sound Level.”
2. Internal noise levels within buildings shall not exceed RC-35N in private offices, RC-30N in conference rooms, and RC-40N in open office space per ARI Standard 885-90.
3. All vibrating, reciprocating and rotating equipment mounted to the roof or the building structure shall be isolated from its associated piping/ducting and the building structure.
END OF CHAPTER IBC-12 AMENDMENTS