I'm trying to fill out the water reduction calc but I'm not sure how to account for GN restrooms and commercial kitchen sinks. This project has core restrooms with toilets and urinals. However there are also adjacent GN restrooms.
How do you fill out the form to include toilets that males might use 3 times a day?
Secondly there are breakroom sinks in the calc for "kitchen sink". However there will also be commercial kitchen sinks in the amenity spaces.
How do I list another "kitchen sink" knowing it will be a different use altogether? The FTE's will not be using this sink, its has its own use commercially.
Emily Purcell
Sustainable Design LeadCannonDesign
LEEDuser Expert
371 thumbs up
March 7, 2019 - 2:43 pm
Are the gender-neutral toilets the same fixture as the M/F restrooms? If so, you can just adjust the "% of males expected to use urinals" field from 100% to, say, 90%, and the form will automatically adjust the rest of the calcs. If they're a different fixture with a different flow rate, it's a little more complicated.
Commercial kitchen sinks are considered process water, unless they are for hand washing by kitchen employees. For a handwash sink, you could add another kitchen sink and break down the percent of occupants between the FTE using the pantry sink and the kitchen staff using the kitchen handwash sink. You'd probably also want to adjust the daily uses manually to reflect multiple hand washes. But anything for food prep, dish washing, pot filling, etc is process water and excluded from the calcs.
Michael Kelly
Design EngineerMacDonald-Miller
1 thumbs up
March 7, 2019 - 7:01 pm
Emily,
Thank you for your response. I changed the urinal field to 90%. But I also have to change the Toilet (male) to 110% to make the math work out.
Additionally I think the math works out for the kitchen handwashing sink. However many kitchen workers there, take them as a percentage of the total FTE's. Then adjust the Non-default value for Total Daily Uses.
I really appreciate your input!
emily reese moody
Sustainability Director, Certifications & ComplianceJacobs
LEEDuser Expert
476 thumbs up
March 8, 2019 - 12:33 am
Hi Michael,
The field at the top that's outside of the table is where the % of males expected to use a urinal should read 90% rather than 100% (or whatever % is appropriate for your project). The table a little lower down is where all flush fixtures are listed together should remain at 100% for both male and female toilets--two separate line items. The urinals should be listed there, but be 100%. That number is saying that 100% of the males in the project have access to the urinals and toilets. The independent line at the top is where you tell the calculator what % you actually expect to use the fixtures is. No need to adjust in both places, as the built-in calculations already make the adjustment for you.
The only time the % values in the tables should tally less than 100% per fixture type is if you truly have a percentage of the population that does not have access to a certain fixture. Usually when that's the case, they'd be defined as a separate user group and have their own tab. If you have any fixture types that tally less than 100%, you should provide a little narrative explaining why.
That make sense? It's not a particularly intuitive calculator, and it took me actually having conversations with reviewers to understand what they expect to see and why.
Blanca Dasi Espuig
Sustainable Design SpecialistHOK
June 10, 2020 - 5:34 pm
Hello,
I have a similar situation, but in my case the male restrooms with urinals (part of the core building) have different tilets flush rate than the gender neutral restrooms with no urinals (tenant space). How would I account for this?
Thank you,
Blanca
emily reese moody
Sustainability Director, Certifications & ComplianceJacobs
LEEDuser Expert
476 thumbs up
April 9, 2021 - 2:24 am
Hi Blanca, sorry for not seeing this follow-up question sooner.
You could account for the toilets in two ways, depending on what's most appropriate for your project:
In both cases, just be careful to allocate the user %'s appropriately. If you feel there's anything that may need explaining for the reviewers, simply include a little narrative as part of your submission.