In our project we have about 1000 office places but we know that there will never be 1000 persons there at the same time, many will be away on business travel, some work at home etc.
A qualified guess by the tenant is that about 2/3 will be present at the same time.
Shall we use 2/3x1000=667 FTE or 1000 FTE?
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Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11474 thumbs up
June 14, 2010 - 12:46 pm
Just thinking out loud here, but I think it really matters which rating system you're in. For a design/construction rating system, I think definitely 1,000 FTE, because that's what the building is designed for, and that's what another tenant might end up having.If this is in LEED-EBOM, then I could see justifying less than 1,000, but I'm not sure. I don't think there are any hard-and-fast rules about this.
Pia Öhrling
WSP40 thumbs up
June 14, 2010 - 1:07 pm
It is LEED C/S and we are in late design, construction has started and we now know the tenant. The tenant is a multinational company with many offices around the world, so they know that their office-spaces are not used 100%.
The office is designed to be very flexible so it can easily be reorganised. There can be fewer office-places, but not so many more than 1000.
Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11474 thumbs up
June 14, 2010 - 1:34 pm
Since it's LEED-CS, have you looked at using the default occupancy numbers from CS Appendix 1 in the LEED BD&C Reference Guide? It's possible that those numbers will be favorable to your situation, and easily defensible with your LEED review.
Pia Öhrling
WSP40 thumbs up
June 14, 2010 - 2:05 pm
But can we use them when we know the actual FTE, which we do since the tenant is known and the tenant fit-out is is included in the project through diffrent owner/tenant or tenant/contractor agreements?
It says in CS appendix 1 that projects that know the tenant occupancy must use actual numbers as long as they not are greater (sqft/employee) than in table 1.
Shannon Gray
ConsultantYRG sustainability
228 thumbs up
June 23, 2010 - 3:36 pm
If you know the project FTE you should use that and not the default. In regards to the 667 vs 1000 FTE, I would play it safe and go with the 1000 FTE.