Hi James,
It is not possible to directly enter a wall made of two surface types, but you should be able to model this by treating the upper tin section as a vertical roof section. You would enter this by using the Fill vertical section option in Cad Input>Roofs/floors>Roof sections.
Also, our wiki regarding Atrium wall heights may be of interest to you. You can find this here.
Shane Regan | Principle Building Performance Support EngineerHevacomp to OpenBuildings - A complete guide for every user | Bentley Communities
Thanks Shane,
Never done this before but seems to work.
The added complication I've got is a tin roller shutter which is now covered by a vertical roof section.
Is this just an issue with the graphical representation or is there a way of adding a door panel to a vertical roof section.
Regards,
James
To advise on this in greater detail I would really need to see your model and perhaps some drawings of the building, but If I understand you correctly, you wish to enter a door into the upper (tin) surface of this wall?
If so, then I would suggest converting the project to Room Data mode once your CAD model is complete, so that you can manually edit these surface areas (i.e. method three in the aforementioned Atrium Wall heights article). However, before doing so please be aware that converting to Room Data mode has other consequences - see CAD model converted to Room Data mode.
Further to Shane's post - under these particular circumstances you may wish to consider a vertical split to the surfaces construction rather than a horizontal split. As the SBEM calculation engine is concerned with areas, U-values and angles you could try modeling this wall as follows:
While this wouldn't be ideal in all circumstances with a split wall type, it should prove workable here. As always with items that differ from your actual construction you would need to ensure that building control were aware of this modification.
Duncan Brown
Thanks Shane & Duncan,
I'll create copies of the Hevacomp model and try both methods.
Will come back to you if I have any problems.