Hi everyone,

When I build a model as a whole shell, say 5 floor, the simulate results
show: only the top floor roof is the whole building roof.

But if I build this 5 floor building one floor by one floor, setting like:
"position this shell: immediately above", the results show: every floor
surface adds together is the whole building roof.

So, the amount of heat loss from the roof will be different.

Could anybody tell me the reason?

Thank you.

Best,
yang

????????????
??????5?????????????????roof?

???????????????????????position this shell: immediately above,
????room plan????????????????roof???????roof?

???equest??????roof???????????????????
??????

?????