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fxpose 10-04-2009 10:13 AM

Concrete slab question
 
I demolished a small wood decking (about 8' x 10' and about 2' high) outside of this bedroom and am planning on rebuilding with a concrete slab surface.
What's most practical......a suspended slab or pour slab on top of several thousand pounds of gravel fill?
Can some other fill material be used?


http://i31.photobucket.com/albums/c3...n/P1040175.jpg

Mudologist 10-04-2009 10:50 AM

Re: Concrete slab question
 
You need to dig and pour a footing across the front, ( below frost line). Lay block wall to bottom of slab hieght, fill and compact, then pour 4" minimun slab with dowels and expansion joints along existing building. It,s really not that bad a job, and much simpler than building an elevated concrete deck.

MK1 10-04-2009 06:28 PM

Re: Concrete slab question
 
Suspended slab will cost considerably more. You only need about 3-4" of gravel on top of other clean fill, if gravel is an undue pain or expense.

Mark

Archena 10-04-2009 07:14 PM

Re: Concrete slab question
 
May want to fix - and move - that pipe first...

ThisOldGarageNJ 10-05-2009 03:42 AM

Re: Concrete slab question
 
go to craigslist... you can often get clean concrete fill for free,,, they are even happy to dump it for you,, And yes like arch says I would definitely do something to that pipe, You may want to consider enclosing it in a larger pvc pipe so it can be pulled or replace if it ever needs to be,,,

Mark

fxpose 10-05-2009 08:16 AM

Re: Concrete slab question
 
Thanks for your replies.

I intend on re-routing that rain pipe, most likely above the finished slab.
I guess I'll use concrete fill after I lay a new foundation wall in front.

Archena 10-05-2009 04:21 PM

Re: Concrete slab question
 
Um, is that a gas line sticking out or a water line? I didn't notice it the first time - the goo on it makes it blend in to the background.

That rain pipe looks like something out of the Twilight Zone....

fxpose 10-05-2009 04:49 PM

Re: Concrete slab question
 
I will use as solid a fill material as I can fill this with, including lots of gravel. And for extra measure, to prevent eventual sinking or tilting of the slab, I will drive rebars into the existing rear and right side block foundation, and perhaps erect a couple of cement block piers in the middle and to the left near the stuccoed wall in case the fill material decides to settle further.

BTW, that's a dead steel pipe sticking out of the ground there. I have no idea why its there.

ThisOldGarageNJ 10-05-2009 06:43 PM

Re: Concrete slab question
 
If you wanted, You could throw in one or two conrete footing tubes as well,, though im sure a block wall down the middle would be more than enough,, Throw in some wire grid as well to help keep the slab from cracking..
Remember,,, theres no such thing as overbuilt,,,,

Cheers
Mark

Archena 10-05-2009 07:46 PM

Re: Concrete slab question
 
Quote:

Originally Posted by fxpose (Post 66712)
...

BTW, that's a dead steel pipe sticking out of the ground there. I have no idea why its there.

Ah, it looked like copper which is why I asked.


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