Occupancy sensors (including passive infrared, ultrasonic, microphonic, and dual-technology) serve three basic functions:turn lights on automatically when a room is occupied;keeps the lights on continuously while the space is occupied;and turn the lights

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Occupancy sensors (including passive infrared, ultrasonic, microphonic, and dual-technology) serve three basic functions:

turn lights on automatically when a room is occupied;
keeps the lights on continuously while the space is occupied;
and turn the lights off after the space has been vacated within a certain time period.

ASHRAE 90.1-2007 guidelines require occupancy-sensitive controls for buildings of 5,000 ft2 or greater, but this credit requires the use of occupancy-sensitive controls for all buildings, regardless of size.

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ASHRAE 90.1-2007 guidelines require occupancy-sensitive controls for buildings of 5,000 ft2 or greater, but this credit requires the use of occupancy-sensitive controls for all buildings, regardless of size.

The credit requirement is to connect 50% of the project lighting load to daylight sensors. This does not mean connecting to 50% of the total number of fixtures, as some fixtures have higher power loads than others. If 30% of fixtures contribute to 60% of

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The credit requirement is to connect 50% of the project lighting load to daylight sensors. This does not mean connecting to 50% of the total number of fixtures, as some fixtures have higher power loads than others. If 30% of fixtures contribute to 60% of your lighting load, then you need fewer sensors to meet the minimum threshold for the credit. Or conversely, by adding more sensors, you can achieve the 75% Exemplary Performance threshold and earn an extra point through IDc1.

Consider various strategies for harvesting available daylight—like adding light-shelves, reflective surfaces and light-colored finishes. Keep partitions low, especially those parallel to the windows. Alternatively, provide clear or frosted glazing in high

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Consider various strategies for harvesting available daylight—like adding light-shelves, reflective surfaces and light-colored finishes. Keep partitions low, especially those parallel to the windows. Alternatively, provide clear or frosted glazing in higher partitions to provide acoustic benefit while still allowing for daylight penetration. 

It makes sense to pursue this credit when glazing makes up more than half of the exterior wall area and the visible transmittance (Tvis) of the glazing is greater than 0.5.

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It makes sense to pursue this credit when glazing makes up more than half of the exterior wall area and the visible transmittance (Tvis) of the glazing is greater than 0.5.

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