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Unread 11-03-2005, 12:57 AM   #1
mbridges
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Join Date: Nov 2005
Location: Ontario Canada
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Deflection

Hi everyone im new to this site, i'd like to say hello to everyone!

Heres my dilemma. I have a customer who wants tile in their kitchen. There currently is vinyl on luan on vinyl on subfloor. Subfloor is 3/4 tongue and groove on a 45degree. Joists are 2x8 16" O.C. Spruce Construction grade. They span 12feet. There is x-bracing in the middle of the span. Customer wants ceramic tile. I used the deflecto meter and I got a 302/L I need a 360/L I think. So all this being said is there anything I can do that is going to be cost effective? thanks

Mike Bridges
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Unread 11-03-2005, 05:58 AM   #2
John Bridge
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Hi Mike, Welcome aboard.

Hang tight while the construction hands and engineering team zero in on you.
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Unread 11-03-2005, 07:11 AM   #3
bbcamp
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Mike, is there access under the floor? In a crawl space, the best way to beef up the joints is to add a support beam somewhere near mid span. If finished space, a support beam could be incorporated into a closet along one wall. The closet would be as wide as the tiled area, and deep enough to reduce the span to 10 feet. Sistering the joists with 2x6s will also bring the joists up to spec.

The luan and both layers of vinyl have to go. Then you have to install 1/2" CC or better exterior rated plywood, followed by the underlayment of your choice. If the increased height is a concern, then you remove the planks and install 3/4" T&G plywood, and an underlayment.
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Unread 11-04-2005, 01:48 AM   #4
mbridges
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Yes there is access in the basement below. I know the customer wants a bathroom eventully exactly below where the kitchen is upstair this may be a perfect time to rough frame it and strengthen the floor upstairs! Thats my excuse and im sticking with it haha. I had never thought about creating a closet to reduce the beam span, very clever. Well thanks very much guys it's great to get such speedy response on here

Sincerely

Mike
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