Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 11-27-2007, 02:56 PM   #1
Newbie
 
Join Date: Nov 2007
Location: Alpharetta, GA
Posts: 1
Rewards Points: 0
Share |
Question

Pouring a concrete slab - Do I need a 4" gravel base?


I have a parking pad, built out of solid 4" X 8" X 16" concrete blocks that butts against my driveway. The size of the pad is about 9ft X 19ft. I'd like to just pull up the blocks, put some forms in, and pour some concrete, and so all that nice finishing stuff you are supposed to do to make the pad look presentable. Do I really need the 4" of gravel for a base? I live in GA, where Sonny Purdue has outlawed the rain, and it rarely gets really cold, so heaving would be a non-issue. The way I see it, if the ground is already compacted underneath, there shouldn't be much of an issue, right? The pad has been down for over 2 years, and erosion has not played a factor. Thanks for your input.

tokuzumi is offline   Reply With Quote
Old 11-27-2007, 03:29 PM   #2
very small building firm
 
Join Date: Nov 2007
Location: england
Posts: 1
Rewards Points: 0
Default

Pouring a concrete slab - Do I need a 4" gravel base?


Quote:
Originally Posted by tokuzumi View Post
I have a parking pad, built out of solid 4" X 8" X 16" concrete blocks that butts against my driveway. The size of the pad is about 9ft X 19ft. I'd like to just pull up the blocks, put some forms in, and pour some concrete, and so all that nice finishing stuff you are supposed to do to make the pad look presentable. Do I really need the 4" of gravel for a base? I live in GA, where Sonny Purdue has outlawed the rain, and it rarely gets really cold, so heaving would be a non-issue. The way I see it, if the ground is already compacted underneath, there shouldn't be much of an issue, right? The pad has been down for over 2 years, and erosion has not played a factor. Thanks for your input.
take up blocks and use a compacter, then just use some steel mesh to help stop cracking, even use some expantion joints which will help.

bebbconstruction is offline   Reply With Quote
Old 11-27-2007, 07:40 PM   #3
Member
 
Join Date: Sep 2007
Location: Northeast, CT
Posts: 68
Rewards Points: 0
Default

Pouring a concrete slab - Do I need a 4" gravel base?


Quote:
Originally Posted by bebbconstruction View Post
take up blocks and use a compacter, then just use some steel mesh to help stop cracking, even use some expantion joints which will help.
If you've got a solid base that isnt topsoil you should be all set. If it were me i'd do like mentioned above. Throw down some wire mesh and make sure the contractor actually PULLS the mesh up into the center of the concrete. The mesh does no good laying on the bottom of the concrete. You wouldnt believe the amount of people I see that never pull the wire up. Mention to the contractor about putting "fiber mesh" into the concrete also. That usually adds about $7 a yard but to me its well worth money. It doesnt take the place of wire mesh but it reduces shrinkage cracks. I'd put in a couple expansion joints and then score it with a concrete blade once its cured a few days. I'd probably go with at least a 3500lbs mix if not 4000 if it were my pad.
GearHd6 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Extending Concrete Patio Slab bobo Building & Construction 6 04-17-2008 12:17 PM
Filling hole in carport (concrete slab) chaddihimself Building & Construction 2 08-10-2007 12:50 PM
Remodel over sloped concrete slab PSL_Hokie Building & Construction 11 07-11-2007 05:14 PM
Concrete slab weeps moisture dale h Flooring 2 04-30-2005 10:29 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.