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Old Posted Apr 2, 2009, 4:43 PM
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Coldrsx Coldrsx is offline
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^depends on the systems being used for mech.

Generally mechanical is in the ceiling, although raised flooring is becoming popular.

So say you have a commercial building with 12' clear between floors, take 2' of that for mech/elec. etc.

In residential buildings you will see bulkheads used more commonly as well as some with inslab venting.
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