Go Back   DIY Chatroom Home Improvement Forum > DIY Repair > General DIY Discussions

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 10-14-2010, 11:58 AM   #1
Member
 
Join Date: Jun 2010
Location: Utah
Posts: 36
Rewards Points: 25
Default

Cracks in new concrete - IMPORTANT


Hi folks....

I recently (1 month ago) had a large pad (24x26 feet) concrete pad poured for a floor of a pole building workshop. There are 2 hairline cracks developing about 10 feet apart from each other and about 6-8 feet long. They both are running the same direction laterally (24 feet across dimension). Though I was not present when they poured (contractors) wife tells me they put down rocks and rebar.

Any comments or thoughts concerning this? what can be done at this stage to minimize? what do I need to look out for?

any feedback is appreciated.

MeanGene is offline   Reply With Quote
Old 10-14-2010, 12:03 PM   #2
Newbie
 
Join Date: Oct 2010
Posts: 2
Rewards Points: 10
Default

Cracks in new concrete - IMPORTANT


Got any pics?

snowcow is offline   Reply With Quote
Old 10-14-2010, 02:46 PM   #3
Member
 
jlhaslip's Avatar
 
Join Date: Dec 2009
Location: Canadian Rockies
Posts: 1,280
Rewards Points: 500
Default

Cracks in new concrete - IMPORTANT


Hairline cracks aren't an issue until they begin to separate either vertically or horizontally.
What size of rebars? What spacing? How thick is the slab? Was the bar centred in the slab?
__________________
Quote:
Originally Posted by Bud Cline View Post
Go ahead and apply for a variance, those guys at City Hall can use a good laugh.
jlhaslip is offline   Reply With Quote
Old 10-14-2010, 07:53 PM   #4
Registered User
 
Join Date: Mar 2009
Posts: 9,967
Rewards Points: 2,000
Default

Cracks in new concrete - IMPORTANT


These new cracks are not in the control joints already cut? http://www.nrmca.org/aboutconcrete/cips/06p.pdf

Gary
__________________
If any ads are present in my answer above, I do not condone/support/use the product or services listed, they are there against my permission.
Gary in WA is offline   Reply With Quote
Old 10-16-2010, 08:26 AM   #5
Concrete & Masonry
 
Join Date: Nov 2008
Location: Wisconsin
Posts: 2,792
Rewards Points: 2,136
Default

Cracks in new concrete - IMPORTANT


If I had to venture a guess, I'd say the cracks developed right off of the posts, which is ironically where the control joints should have been cut.

We always isolate the posts with expansion material, to allow the slab some movement when it's shrinks, and still cut control joints.

24' x 26' is far too large for no joints, unless it's over a foot thick and had a great cure.
jomama45 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
Should new (one years old) concrete crack? Faulknertw Carpentry 10 05-19-2009 06:40 AM
Help!: 4" concrete over 2' dirt over 7/8 wood planking! agent99 Flooring 4 04-28-2009 09:21 AM
filling cracks in concrete, to prevent weed emergence? joeyboy General DIY Discussions 19 03-13-2008 10:35 AM
How do you measure poured concrete PSI? head_dunce Building & Construction 18 02-25-2007 09:58 PM
stone veneer formula tom1st Landscaping & Lawn Care 1 07-08-2006 05:48 PM




Top of Page | View New Posts

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