Dear all,
We have a project which is an extension of an existing industrial facility. The occupants of the new building can access it only by passing through the existing facility's entrance. There are existing toilets and showers near the entrance of the existing facility and it may happen that the occupants of the new building use the existing toilets, especially when they enter or leave the facility. However, fixing a certain percentage of occupants that could use existing fixtures and new fixtures does not seem straightforward. We have been thinking of using time metric by assuming it as a percentage of time they may spend in each building, translating into using the fixtures of that building (occupant percentage).
I would like to seek your expert advice on this matter. Please share your experience, knowledge or thoughts.
Thank you so much!
Bests,
Hashir
Dave Hubka
Practice Leader - SustainabilityEUA
LEEDuser Expert
530 thumbs up
April 18, 2023 - 6:47 am
Hello Hashir,
We look at the layout of the entire facility (new and addition) and make an assumption. If the breakroom, locker room, main restrooms are located in the existing, than we typically assign 75% to the existing fixtures and 25% to the fixtures in the addition.
There is no "exactly right" answer in this situation, an educated guess and brief narrative explaining your thought process to the LEED reviewer should suffice.
One other comment, be sure to read through the reference guide in detail since there are different requirements for the prereq/credit water calcs. And showerheads should only be included when seeking the LTc Bicycle Facilities credit.
Hope this helps!
Hashir Usman
April 18, 2023 - 7:05 am
Hi Dave,
Thank you so much for your response. We are following more or less the same approach as you have described. And thank you for pointing out differing requirements in the case of WE prerequisite and LTc_Bicycle facilities credit. I have taken that into account and considered only the designed fixtures for the prerequisite and Integrative Process credit.
Cheers!