[TRNSYS-users] wall thickness impact on zone volume

David BRADLEY d.bradley at tess-inc.com
Wed May 23 08:46:38 PDT 2018


   The physical thickness of the wall is not counted in the zone volume. 
It only impacts the thermal properties of the materials. There is not 
100% consensus in the building modeling community as to which dimension 
(inside, outside, or middle) to choose. I typically use the interior 
dimension for external walls and the middle dimension for internal walls.

kind regards,


On 05/23/2018 00:35, PJ via TRNSYS-users wrote:
> Dear support team,
> I am working on Sketchup 8 to model a house.
> What I am trying to do is to trace the internal geometry to build my 
> house model and then apply thickness of the wall.
> Generally, how does TRNBLD account for wall thickness in the wall 
> materials, does this just impact the thermal properties of the 
> material, or does this also impact volume? If so, which direction will 
> it impact the volume? Inside, outside, or half-half?
> Is it possible to assign a wall thickness specifically to go 
> internally to ensure the internal volume will be accurate if I trace 
> external wall?
> Or do I have to trace internal walls. The issue with having to trace 
> internal walls is that I then left with gaps in between rooms.
> Thanks in advance.
> Best Regards,
> PJ
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> TRNSYS-users at lists.onebuilding.org
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Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

d.bradley at tess-inc.com


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