Most buildings aren’t able to change the daylight or views available in occupied spaces–you’ve either got it or you don’t. Because there’s little opportunity for teams to impact the credit outcome, most projects tend to pursue this credit late in the performance period and only if additional LEED points are needed.
The good news is that it should be relatively easy to get a good sense of whether your project complies or not with either the daylight or views option. Although time consuming, assessing daylight via measurements should be fairly straightforward if you have access to all of the regularly occupied spacesRegularly occupied spaces are areas where one or more individuals normally spend time (more than one hour per person per day on average) seated or standing as they work, study, or perform other focused activities inside a building.. The views option is a bit more complicated given that the views need to meet at least two of the four available criteria for quality views.
The view factor is an approximation of the quality of the view that an individual has at their workstation. So, if you’ve got a larger building with many workstations, this is probably not a great method to show quality views. The LEED Reference Guide includes further explanation for how to calculate the view factor for an individual workstation.
To connect building occupants with the outdoors, reinforce circadian rhythms, and reduce the use of electrical lighting by introducing daylight and views into the space.
Achieve illuminance levels between 300 luxMeasurement of lumens per square meter. and 3,000 lux for at least 50% of the regularly occupied floor area.
With furniture, fixtures, and equipment in place, measure illuminance levels as follows:
Achieve a direct line of sight to the outdoors via vision glazing for 50% of all regularly occupied floor area. View glazing in the contributing area must provide a clear image of the exterior, not obstructed by frits, fibers, patterned glazing, or added tints that distort color balance.
Additionally, 50% of all regularly occupied floor area must have at least two of the following four kinds of views:
Include in the calculations any permanent interior obstructions. Movable furniture and partitions may be excluded.
Views into interior atria may be used to meet up to 30% of the required area.
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