concrete slab

	concrete slab

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Subject

Author

Date

concrete slab

bajimenezconc

05-31-2006

SQLit

marson

Joseph Meehan

Edwin Pawlowski

Oren

bajimenezconc

bajimenezconc

dkarnes

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Posted by Oren on May 31, 2006, 11:08 pm

On 31 May 2006 15:52:06 -0700, bajimenezconc@yahoo.com wrote:

>pouring a slab foundation on top of existing 4 inch concrete patio.

>code calls for 2 inches of sand on top of 10 mil visqueen.what do you

>guys think? should i just roughen it up and pour on top? Visqueen is

>there as a vapor barrier.

Let me guess, your code is for a new foundation? Break up the patio an
build a "slab foundation", or contact the permit department for some
clarity.

Oren

"My doctor says I have a malformed public-duty gland
and a natural deficiency in moral fiber, and that I am therefore
excused from saving Universes."

Posted by on June 1, 2006, 12:19 am

Oren wrote:

> On 31 May 2006 15:52:06 -0700, bajimenezconc@yahoo.com wrote:

> >pouring a slab foundation on top of existing 4 inch concrete patio.

> >code calls for 2 inches of sand on top of 10 mil visqueen.what do you

> >guys think? should i just roughen it up and pour on top? Visqueen is

> >there as a vapor barrier.

> Let me guess, your code is for a new foundation? Break up the patio an

> build a "slab foundation", or contact the permit department for some

> clarity.

> Oren

> "My doctor says I have a malformed public-duty gland

> and a natural deficiency in moral fiber, and that I am therefore

> excused from saving Universes."

Posted by on June 1, 2006, 12:26 am

slab is in good condition. it is a slab foundation for a room addition
24x12. bearing walls sit on new 16"x18" foundation. existing slab wont
really support anything.more worried about creating a sand and visqueen
barrier which would allow the slab to slide back and forth.
Oren wrote:

> On 31 May 2006 15:52:06 -0700, bajimenezconc@yahoo.com wrote:

> >pouring a slab foundation on top of existing 4 inch concrete patio.

> >code calls for 2 inches of sand on top of 10 mil visqueen.what do you

> >guys think? should i just roughen it up and pour on top? Visqueen is

> >there as a vapor barrier.

> Let me guess, your code is for a new foundation? Break up the patio an

> build a "slab foundation", or contact the permit department for some

> clarity.

> Oren

> "My doctor says I have a malformed public-duty gland

> and a natural deficiency in moral fiber, and that I am therefore

> excused from saving Universes."

Posted by dkarnes on June 1, 2006, 12:07 pm

bajimenezconc@yahoo.com wrote:

> pouring a slab foundation on top of existing 4 inch concrete patio.

> code calls for 2 inches of sand on top of 10 mil visqueen.what do you

> guys think? should i just roughen it up and pour on top? Visqueen is

> there as a vapor barrier.

is this for a patio or are you building a room addition. if it is a room
addition you better check with your building regs. i did that, i had
footers under the existing slab. i will bet if it is just 4 inches you
do not have footers.

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