Hello LEEDusers,
It’s the first time I work on a LEED credit. The project is a new construction (NC-2009) and we aim for the Water Performance Measurement (WEc1) of an existing building in operation.
Since the project is still in construction, I have to provide reasonable calculation to demonstrate that 40% or 80% of the total water is measured. I will use the estimated water consumption used for design to set the base of my calculation.
We have a meter on the entry of water on the building. The network is divided into 3 branches: industrial water (cooling towers, measured), process water (measured) and cold domestic water. There is no irrigation required for this project. The way the entire network is designed, I can go for a deduction calculation for indoor plumbing and fixtures (cold domestic water). However, domestic hot water is not measured and is produced within cold domestic water network (typical configuration).
My question is: Can I still do a deduction calculation for cold domestic water? How do I treat hot domestic water?
Thanks for your help!
MM
Ben Stanley
Senior Sustainability ManagerWSP - Built Ecology
LEEDuser Expert
250 thumbs up
January 11, 2018 - 2:25 pm
Hello,
If the domestic hot water is only used for indoor plumbing fixtures, then you could use the deduct method described above to separately measure the indoor plumbing fixtures and fittings end use as listed in the reference guide. If the domestic hot water serves another system besides plumbing fixtures, the deduct method wouldn't work in this scenario.