Souad,
I believe that there is a way of opening a 2d dwg as a
background image in SketchUp so that you can then trace over it
more quickly than if you were to start from nothing. Still, each
time that I have encountered this issue I have found that it takes
juat about the same amount of time if fight with and correct an
automatic import or if you start from nothing.
Here are a few tips that might help.
1. use as few thermal zones as possible on each floor. Often you can group together rooms that face a certain direction (i.e. have a particular sun exposure) into a single thermal zone.
2. model the plenum between floors as its own zone; this makes it much easier to deal with the zone adjacencies from one floor to the next.
3. rely heavily on the line drawing tool. Draw the perimeter of each thermal zone's floor then draw vertical lines for the corners then connect their tops. I have run into a lot of frustrations with the extrude tool.
4. where possible avoid copying and pasting zones. It is nearly as fast to draw another floor perimeter and walls. When I try copying and pasting I sometimes have trouble with SketchUp selecting things that aren't part of the zone that I am trying to copy.
5. do all the walls floor by floor first and then add windows after you have all the walls completed.
6. import the *.idf into TRNBuild and check adjacencies early and often. I don't usually do more than 3 or 4 zones before I save the *.idf, import it into TRNBuild, check it and then increase the version number in the name of my *.idf file. When you run into import errors I find it is often easier just to start over and redraw a few zones than it is to figure out where the error is.
7. this one is rather specific but if you are drawing opaque doors (i.e. walls contained within another wall) make a vertical line between the middle of the door lintel and the ceiling. This will break the containing wall into two walls and while that adds another surface for Type56 to deal with I have found that it avoids a lot of wall area calculation issues and errors in the *.idf file.
best,
David
On 11/20/2020 06:50, Lakjiri Souad via TRNSYS-users wrote:
Dear Trnsys users,I want to simulate a complex building by TRnsys 18.I have the plans of the building drawn in 2D by Autocad2020 .What are the possible and easy ways to generate and insert the 3 D building in TRnbuild18 using the 2 D autocad 2020 plans? knowing that The building is large and it would take a lot of time if we use the sketchup18 to model it in 3D .--
Souad LakjiriElectrical Project EngineerMorocco's Ministry of Health
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-- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 3 North Pinckney Street - suite 202 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com