IES-VE User Forum

Hey folks, IES newbie here.

Here's my situation: I have a multi-storey building and need to add a complex roof to it - part green roof, part skylight, part opaque, and the roof will have two tiers to it. I've tried adding a 2D plane but can't figure how to change its properties to glazing and can't seem to partition it in order to assign different properties to the various roof areas. Have also tried drawing an extruded shape on top of my building with zero thickness, but still can't seem to get it to work the way i need it to.

Any suggestions are appreciated!
Mark.

Hi Mark,

I'm not entirely sure what the make-up of this complex roof is, but bear in mind that 'roof' element will need to form the external surface boundary of a room -whether that's a roof void, or the ceiling of one of the rooms in the building. There's various ways to go about it depending on the geometry. If you have a mix of roof lights and what amounts to a ceiling void with a flat green roof on top, I would create the roof as a single volume, then calve it up into the relevant parts using the partition tool. For the roof light void, you can either combine this into the room that it serves, or, probably better; leave it as its own zone, assigned as a void, with an open hole where it links to the room beneath and with the skylight allocated on top. This way you get to model the higher internal temperatures occurring in the void, rather than aggregating them with the room below.

Any overhangs and such can be modeled additionally as shading surface volumes.

Hope that's of some use.