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Old 08-24-2010, 08:07 AM   #1
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Steel Ceiling joist

I need to figure out what gauge joist and spacing I need for a 10' high 20 x 27 suspended ceiling. I can attach my ledger into the steel framing studs of the building or do I need a supporting wall below the ceiling for more support? I need also install a waterproof ceiling material and insulate above it. Tim

Last edited by ttilton; 08-24-2010 at 08:19 AM.
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Old 08-26-2010, 08:26 PM   #2
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Steel Ceiling joist

I'm lowering a ceiling down @ a coal power plant and I need to use metal ceiling joist. The span is 20 feet. What size joist do I need and ledger. The reason for lowering the ceiling is to insulate and drywall so the room can be heated better. ttilton

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