[Equest-users] [Bldg-sim] How to mirror a building in eQUEST

[Keith Swartz via Equest-users]

Xiangjin,

If the building is mirrored on an east-west axis so that the north wall now faces south and south is now north, but east is still east and west is still west, how about changing the latitude from X degrees north to X degrees south? This won’t work if the building is mirrored on a north-south axis.

Keith Swartz, PE | Senior Energy Engineer
Seventhwave
608.210.7123 seventhwave.org

From: Julien Marrec via Bldg-sim [mailto:bldg-sim at lists.onebuilding.org]
Sent: Wednesday, April 27, 2016 12:56 PM
To: Xiangjin Yang <XYang at mcw.com>
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] How to mirror a building in eQUEST

Hi,

That's a very interesting question, one where it seems simple but turns out it's going to be awful to redo from scratch in equest if you have a large model.

I don't have a solution that will work out of the box but if you're wiling to spend some time coding instead of drawing I have the start of a python object oriented model for equest where I can parse equests envelope and play with it. Offsetting all windows on a wall or copying them from floor to floors works for example.

The limit is that I haven't developed it enough to figure out "defaulted" attributes nor to include enough methods to allow the users to not have to figure out by themselves how the geometry is articulated in equest between floor and space polygons and the surface locations.

I also pretty much didn't write any documentation but I've commented the code (python) extensively.

I was planing on extending it to read and write between equest and sketchup but I've abandoned the project.(not using equest much anymore).

I can share that if you want.

There's also something called BTAP as part of the openstudio-standards that translate an equest model in the openstudio format, not sure if it can write the other way around as well (and it has a bunch of problems with "defaulted" attributes such as construction and will throw a hard error).

Frankly if your model isn't too big I'd just do it by hand..

Julien

Envoyé de mon iPhone

Le 27 avr. 2016 à 17:18, Xiangjin Yang via Bldg-sim <bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>> a écrit :
Hello,
I have a two phases project. Phase 1 building has been modelled in eQUEST and Phase 2 is mirrored from Phase 1. Can any of you advise me how to mirror the Phase 1 so I can get the Phase 2 done without creating it from scratch. I thought of adding a negative sign to each vertex of each polygon in .inp file, but the polygons have to be defined in a CCW direction, which leaves the problem unsolved.

Thanks for your helps.
Regards,

Xiangjin Yang Ph.D., P.Eng., LEED AP BD+C
MCW Energy Modelling Centre of Excellence
Building Simulation Engineer

MCW Consultants Ltd. <http://www.mcw.com>
Queen’s Quay Terminal
207 Queen’s Quay West, Suite 615
Toronto, Ontario, Canada M5J 1A7
Office: (416) 598-2920 ext:255
Fax: (416) 598-5394

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