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Old 01-21-2013, 04:41 PM   #1
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Split level concrete slab floor install


Hello all. After days of searching threads I've gotten almost all of my questions answered about my current project. I need some guidance from the experts.

My family recently moved from Vegas to 40 acres about an hour north of Houston. In Vegas we had a massive basement. Here basements aren't really an option. So I bought an acre from our nearest neighbor which contains a metal 20'x45' building. The previous owners used it for a dog kennel. To that end the concrete foundation was poured in three levels. The center of the floor is 1.5" higher than both sides, making a walkway slightly elevated down the center of the building. 1" 1/2pipe was then laid in the transition to allow waste water to be rinsed out the back of the building. Aside from that the building is perfect. It's got 18' ceilings, central heat and air, and is plumbed for septic and potable water.

This will become my man cave. I have a full 10' bar, pool table, two 10' Texas Holdem poker tables and a shuffle board table. In other words, LOTS of weight. Add in 15 or so middle aged fat guys and there is going to be a decent load on the floor. I would be fine leaving it bare concrete, but I have to do something to level it for use. I was thinking about running 2" "joists" across the concrete and then laying 3/4 plywood over it. I 've been in this building during every season and the concrete never sweats, but the 2" air space would allow for evaporation just in case (I think).

What would you recommend as the best way to accomplish my goal. I am trying to avoid pouring more concrete and prefer to build over it if possible.

Thanks Guys. Like I said, I had questions about the plywood walls, insulation, door frames,... And I found answers to all of them, but this one I need some help with.

Appreciate it,

Tattooed Mick

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Old 01-21-2013, 05:19 PM   #2
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Split level concrete slab floor install


A note, at the very front of the building the floor is level all the way across. Then about 4' back is slopes down on both sides to accommodate the previously mentioned drain system. I'm become more concerned. A simple joist system won't work because the slope is not uniform front to back. It gradually slopes into the depression over the space of 4 or 5 inches.

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Old 01-21-2013, 05:29 PM   #3
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Split level concrete slab floor install


how wide is the elevated walkway? best way would be to break out the higher walkway and repour it level with the rest.
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Old 01-21-2013, 05:37 PM   #4
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Split level concrete slab floor install


I think it's all one slab, they just framed the center seperate after the bottom had cured and poured an additional 2" of concrete on top. I say I think, because that's how it was explained to me. I wast there. The center wall way is 5' wide and 30' long, and 2" above the sides.
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Old 01-21-2013, 05:41 PM   #5
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Split level concrete slab floor install


Probably not a huge issue but the walls have been cut to accommodate this tiered slab at the rear of the building, so I would also have to replace the outer plywood walls if I busted the slab up.
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