Hello,
I work on a building which contains 2 sections and only one of them would like to go with LEED EBOM. The first section (which wants leed certification) is principally offices. The other is an hotel, is located on the top of the entire building, and is owned by a third party.
Nevertheless, there are mechanical areas in the 2 sections but both of them serve the 2 sections of the entire building.
The 2 sections are seperatly metered.
My question is about the area calculations. How should I calculate the mechanical areas? Should I use an area ration of these ones equal to the total energy consuption ratio?
Thanks for your help and for any advice about hese kind of attached buildings.
Barry Giles
Founder & CEO, LEED Fellow, BREEAM FellowBuildingWise LLC
LEEDuser Expert
338 thumbs up
March 4, 2015 - 2:54 pm
Vincent. This is almost a direct replica of 345 California Street, San Francisco that was used to create the USGBC rules for 'vertically attached buildings'. Long before you get to space allocations it should be pointed out that the buildings should be clearly 'separate'. That means, separate meters for everything, (electric, gas, water, steam, etc). Separate operations teams, separate owners (which you mention), separate HVAC, clearly defined entrances (not necessarily separate front doors, but that helps).
Items that CAN be shared are:, fire suppression systems, Fire alarming, Fire escapes (stairwells).
In theory the square footage of the mechanical spaces 'could' be left out under the 10% rule depending where you need to allot that 10% (there may be retail or others that you might choose).
Hope that all helps
Vincent Dupuy
Eng., PA LEED BD+CENGIE Services
March 4, 2015 - 3:18 pm
Thanks a lot M.Barry. You talk about separate Hvac: in the case of my building, the whole entire building is supplied by a steam district heating and the hotel consumption is submetered. Is it ok?
Thanks
Barry Giles
Founder & CEO, LEED Fellow, BREEAM FellowBuildingWise LLC
LEEDuser Expert
338 thumbs up
March 4, 2015 - 3:27 pm
Yes, that's ok. (All you really have to do is clearly define what steam goes to the hotel and what goes to the office) Get the meters read at least weekly (daily might be better) so you have a clear record of what went where.
Vincent Dupuy
Eng., PA LEED BD+CENGIE Services
April 16, 2015 - 10:43 am
I have another question for vertically attached building. The building which would like to get certified is located below the set of 2 buildings and an hotel is located just above it. At the top oh the hotel, there is a roof with plantations. This roof and the plantations are managed by the first building which is trying to get certified. Is it possible to include the roof in the perimeter of the certification, although hotel is excluded of certification ??