Forum discussion
CI-2009 WEp1: Water Use Reduction—20% Reduction
I am using the active sample form to calculate my usage. Seems basic, 13 FTE and 48 transients. I am making different usage groups. But when I enter the info and calculate the form is showing 0 in the Annual water consumption columns? Shouldn't it calculate it for me? It is from the usgbc site.
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Kasandra Martin
Designer3 thumbs up
February 11, 2013 - 11:55 am
I think I figured it out! lol I didn't enter the days of operation. That would be noted by the architect correct? this is a LEED CI so the PIF3 form would show that? It hasn't been registered yet, we are still trying to work out possible points.
Carlie Bullock-Jones
PrincipalEcoworks Studio
LEEDuser Expert
220 thumbs up
February 11, 2013 - 12:15 pm
Hi Kasandra,
It's good to hear that you are using the sample forms to run some preliminary calculations prior to registering the project. Yes, once the project is registered in LEED Online the annual days of operation will be listed in PIf3 and will link to the WEp1 form.
Note that the fixture groups are meant to define occupant groups (i.e. office, warehouse, retail, etc.) within the building that use a specific subset of flow and flush fixtures. If your project occupants have similar usage patterns, one fixture usage group may be used to represent the entire tenant occupancy and the form will automatically calculate the daily usage rates for each fixture based on the percent male/female as entered in the Fixture Group form table when the group is assigned to each fixture.
Hope helpful!
Kasandra Martin
Designer3 thumbs up
February 11, 2013 - 12:24 pm
Thank you! It is an office with FTE and Transients so I was going to do a group for each. The forms are so helpful.
Carlie Bullock-Jones
PrincipalEcoworks Studio
LEEDuser Expert
220 thumbs up
February 11, 2013 - 12:29 pm
Unless the FTE and transients use different fixtures (with different flow/flush rates) then no need to list a group for each...you can list one fixture group in the form table and it will automatically calculate the daily usage rates for these occupant types.
Kasandra Martin
Designer3 thumbs up
February 11, 2013 - 12:33 pm
Well there are two sets of bathrooms. The FTE have showers in their bathroom. Otherwise all the fixture types will be the same. So mayby just make a group of the FTE and showers?
Carlie Bullock-Jones
PrincipalEcoworks Studio
LEEDuser Expert
220 thumbs up
February 11, 2013 - 12:38 pm
You can identify one group if the FTE and transients have access to the same fixture types between these two bathrooms...the form will automatically calculate the correct daily uses for the FTE and transient numbers you list for this group (e.g. it will calculate the daily uses for the FTE shower use, and excludes transient shower usage). :)
Kasandra Martin
Designer3 thumbs up
February 11, 2013 - 12:42 pm
The showers are in the bathroom in the back office area where the transients use the front bathrooms. It is a government office building with waiting area. So the visitors don't really have access to the shower I would say.
Carlie Bullock-Jones
PrincipalEcoworks Studio
LEEDuser Expert
220 thumbs up
February 11, 2013 - 12:44 pm
Yep, the form takes this into account - that transients do not utilize the showers (per the LEED default daily usage rates outlined in the LEED Reference Guide).
Kasandra Martin
Designer3 thumbs up
February 11, 2013 - 12:49 pm
oh wow. So you just simplified this for me quite a bit. Thank you! this forum is so helpful. It is my first project to work on so I have alot to learn. Thank you for all your help.
Carlie Bullock-Jones
PrincipalEcoworks Studio
LEEDuser Expert
220 thumbs up
February 11, 2013 - 12:54 pm
glad to help! you can take the time listing out each of these groups, but there's really no need in your project case, so I was hoping to save you some time.
If your front restroom had different flush/flow fixture rates from the back restroom, and the transients only had access to the front restroom, then this scenario would require you to list different fixture groups to accurately account for this... hope this helps clarify.