Clay As Base For Garage Slab - Concrete, Stone & Masonry - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Concrete, Stone & Masonry

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools
Display Modes
Old 06-26-2017, 09:59 PM   #1
Newbie
 
Join Date: Jun 2017
Posts: 1
Rewards Points: 2
Default

Clay as base for garage slab


Hi there. After reading a bunch of articles, it seems like i am going to be having problems down the line with a clay base beneath my slab and not having gravel and sand. I initially started preparing my base prior to snowfall last fall and then it spent the winter under snow so it settled quite especially in areas where it was excavated more. I didn't have access to sand or gravel and again added the necessary clay to get it to level. Its been compacted with a bobcat and jumping jack everytime. I plan on doweling into the grade beam and foundation wall of my house every 16 inches with 10mm rebar and having 10mm vapour barrier between the slab and clay. Does anyone foresee any issues or should i raise my slab a couple inches because I have my tractors running again and can access my sand pit. Thank you
koonz99 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-27-2017, 12:05 AM   #2
Member
 
jlhaslip's Avatar
 
Join Date: Dec 2009
Location: Edmonton, Alberta
Posts: 5,975
Rewards Points: 708
Default

Re: Clay as base for garage slab


Clay is not a good base for concrete because it expands.
Definitely dig the clay out and use gravel/sand for under the slab.
__________________
Quote:
Short of cutting off a body part, the worst that can happen in woodworking is manufacturing really nice looking kindling. --- Quoted from lenaitch
jlhaslip is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-27-2017, 02:44 AM   #3
Member
 
Join Date: Sep 2012
Posts: 11,122
Rewards Points: 3,240
Default

Re: Clay as base for garage slab


Test your soil to see what the clay content really is.
SeniorSitizen is online now   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-27-2017, 05:53 AM   #4
JUSTA MEMBER
 
Join Date: Feb 2014
Location: Central Wyoming
Posts: 13,070
Rewards Points: 1,106
Default

Re: Clay as base for garage slab


Get the clay out.

When clay gets wet it turns into a bunch of tiny ball bearings.

This will cause your garage to slip and slide and probably tear loose from it's pinnings that you propose.


ED
de-nagorg is online now   Reply With Quote
Old 06-27-2017, 06:43 AM   #5
Member
 
Join Date: Apr 2017
Location: Michigan
Posts: 1,803
Rewards Points: 898
Default

Re: Clay as base for garage slab


Quote:
Originally Posted by koonz99 View Post
Hi there. After reading a bunch of articles, it seems like i am going to be having problems down the line with a clay base beneath my slab and not having gravel and sand. I initially started preparing my base prior to snowfall last fall and then it spent the winter under snow so it settled quite especially in areas where it was excavated more. I didn't have access to sand or gravel and again added the necessary clay to get it to level. Its been compacted with a bobcat and jumping jack everytime. I plan on doweling into the grade beam and foundation wall of my house every 16 inches with 10mm rebar and having 10mm vapour barrier between the slab and clay. Does anyone foresee any issues or should i raise my slab a couple inches because I have my tractors running again and can access my sand pit. Thank you


That's a thick vapor barrier.

Where are you located?
BIG Johnson is offline   Reply With Quote
Old 06-27-2017, 04:29 PM   #6
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 6,229
Rewards Points: 2,742
Default

Re: Clay as base for garage slab


15mm vapor barrier is often spec'd by designers/engineers these days,,, the old 6mil from the apron/vest stores are long gone other'n residential guys,,, we used sand/clay for road base in so carolina & they're still there,,, where's YOUR where ?
stadry is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Leaks in colored concrete slab in CAVE dgyank Concrete, Stone & Masonry 4 10-21-2016 07:21 AM
Pier on slab cer2012 Building & Construction 0 04-16-2012 09:52 PM
Slab leak or not? loveyolife Plumbing 11 04-01-2012 02:25 AM
Installing a Sterling shower receptor in a mortar base repoocaj Plumbing 2 11-19-2011 08:52 AM
Fix or Replace Porch Concrete Slab Majoram Building & Construction 10 06-25-2011 03:45 PM




Top of Page | View New Posts