[Equest-users] Modeled Interior Floors as Exterior Roofs

[Lapierre, Patrick via Equest-users]

Hi Darryl,

From what I understand, your problem comes from the fact that when you specify a roof on a shell (Wizard, page 3), a roof is created for every zone of that shell regardless of what’s directly over the zone. In example, you can have a 3rd floor zone with a roof even though there’s another zone directly above it on the 4th floor.
Unfortunately, eQUEST does not make this “check”.

To avoid this problem, you can of the following:

A.     Model zones with roofs in separate shells than those without roofs

B.     Manually delete the excess roofs in the detailed design phase and replace them with ceiling.

C.      Model roofs only for the top floor and manually add extra roofs for those zones not on the top floor.

D.     Assign insulation values of R = 10000 (eQUEST maximum) to the excess roofs.

Whatever option you choose, you might encounter some zones with partial roofs which might cause you some problems. Meaning the exposed roof of the zone doesn’t match the full footprint of the zone. This will net you weird zone patterns if you use option A. If you use option B or C you will have to create polygons matching the exact roof surface and model the roof using these polygons. If you use option D, you can create a construction R value based on the actual roof surface vs eQUEST modeled roof surface ratio.

Unfortunately I don’t think there’s a “magic” solution. Each one has it’s upside and downside.

Hope this helps.


[Bouthillette Parizeau]<http://www.bpa.ca/>

Patrick Lapierre_ing.
plapierre at bpa.ca


De : Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] De la part de Darryl Kasun via Equest-users
Envoyé : 13 juillet 2016 15:42
À : equest-users at lists.onebuilding.org
Objet : [Equest-users] Modeled Interior Floors as Exterior Roofs

Hey everyone,

The hospital I am working has different footprints for each level (see snapshot below).  While going thru the bldg. envelope in detailed mode, I noticed that the surfaces separating interior floors are modeled as exterior roofs.  Now it’s been a while since I’ve modeled using eQUEST but I’m sure these surfaces should be modeled as interior floors.


[cid:image002.png at 01D1DDA3.CC3E0780]

So a couple questions:


1)     What did I miss in the DD Wizard?  One shell was made for each elevation, and for the each above grade floor, below is the input entered for the floor info.  Is this where I made my mistake?  Or do I need to model the shells with and without roofs separately?



[cid:image003.png at 01D1DDA3.CC3E0780]



2)     Is there a fast way to change what’s needed without deleting each “interior roof” and replacing it with an interior floor or going back into the DD wizard?  Pretty sure not but here’s hoping!

Thanks everyone.  Hope your mid-week is going well!!

Darryl Kasun



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