equest zoning approaches

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I am wondering how the typical equest model is zoned. Two scenarios:

1. Create a zoning diagram combining like spaces on perimeters and
like spaces in interiors based on the HVAC type and
distribution. Combine storage rooms with exhaust only with adjacent
space where the transfer air comes from, etc. Plunk this zoning
diagram into equest.

2. Plunk the architectural drawing into equest and every space
becomes an equest space - every closet, elevator/duct shaft, office,
small interior meeting room, janitor closets - all a space in equest.

I had always assumed that the scenario 1 would be used. I am now
finding (by way of reviewing LEED submissions) that many people use
scenario 2. It seems very inefficient to me and certainly increases
the cost of doing a review.

What is typical?

Chris Jones

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Hi Chris,

If you want to get your project done in time and within the budget I would
highly recommend Scenario 1. I think that Scenario 2 is a result of not
thinking the zoning through before doing the take-offs from CAD drawings.

When I start a model I spend a few hours at least looking at what's going on
in the building: what are the mechanical zones, wall constructions, roof
constructions, floor plans - where do you have an exposed roof due to the
floor above having a smaller foot print, do the floor to floor heights vary,
etc., etc. If you don't do this you can really create a nightmare for later.

Cheers,

Carol

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Ideally it would be option one as this would be easiest for both modeler and reviewer, however more and more it is becoming option two. Here are a few reasons why:
- If the LEED model has been developed in DD the architectural layouts could change. It is therefore easier to provide more rooms in the model so that layout changes are easier to deal with without having to redo the model
- Space by Space method lighting requires the modeling of storage rooms etc
- The few building I have worked on for LEED have primarily perimeter spaces. Therefore it is harder to clump like rooms together due to orientation differences.
- To accurately model the building area it is easier to model some unconditioned spaces so that these can be included or taken out of the area calcs.
- To more accurately model VAV boxes zones need to be broken out

Christie Rimes, LEED BD+C

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Hi Chris,

We always use scenario 1,

Martin>I am wondering how the typical equest model is zoned. Two scenarios:

Martin Roy, ing. PA LEED

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