Bit of a tricky situation. I have been trying to model a small server room in an existing loft space. (quick revit model attached to show the plan with roof removed).
I am having some issues when setting up the roof level. I have modelled the room as 0.5m, as that will be the lowest wall height and elevated the edge accordingly by 0.6m. However, when checking the 3D drawing in Hevacomp I seem to get walls which extend way past my highest point of the room. Is this just a graphical issue or something I've done wrong? Happy to link the model for you to have a look at.
Also on a separate note: when setting up the roof and filling in vertical sections - do they assume the material of the wall beneath them, or do they assume the material of the roof?
Many thanks and best regards
From your images I would suggest that your roof may not be covering the rooms below in their entirety - I would recommend retracing the roof section ensuring they are larger, so that they cover the room below. The roof set up should work fine then.
Regarding extending the walls - the same wall type in the room is used.
Shane Regan | Senior Building Performance Support Engineer
Hi Shane, thanks for the tip. Checked the DXFs and retraced and still getting the same results. Though when I make it an exposed roof I get the following error:
For reference, my FFL is set at 0 for the floor below, and lowest point on the roof is 0.5m above that.
I'm not sure if this would be affecting the results in terms of solar radiation or not... If it isn't then I am not too bothered by the 3D view being off as am only after heat gain numbers
Hi Seb, that message usually means some of a roof may be at a lower level than the roof you are trying to set it up over. If you require assurance that all surfaces are correct I would advise using Print and Schedule to examine the rooms surface area properties - as shown here.
Answer Verified By: Sebastian Mlynarski
That's perfect - didn't know this existed.
Thank you Shane
No problem at all Seb,