What Is 'Inner Volume' Room Representation?
This is where the wall thickness (and ceiling thickness), as derived from the constructions applied to the model, is subtracted from the total volume of the zone. This gives a more accurate figure for volume and surface areas which can be useful for Thermal modelling. Switching on the inner volume option gives a width to the building elements - walls, roofs etc - in the model.
The width is derived from the element's construction and is attached to the drawn surfaces according to the following rules:
1. External walls and roofs shrink inwards from the drawn polygon.
2. Ceilings shrink downwards from the drawn polygon (which represents the finished floor).
3. Partitions shrink inwards an equal distance each side of the drawn polygon.
4. No width is attached to ground floors.
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