Drill Close To Concrete Edge - Concrete, Stone & Masonry - DIY Chatroom Home Improvement Forum


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 10-09-2013, 09:13 AM   #1
Newbie
 
Join Date: Oct 2013
Posts: 1
Rewards Points: 10
Default

Drill Close to Concrete Edge


Hi,
We've recently had a pool cover installed. The cover requires anchors drilled into the concrete pool deck. The manufacturer recommends drilling 6 inches from the edge but the contractor has installed some of the anchors about 1- 1 1/2 inches from the edge. I see no signs of chipping or cracking now but could this cause problems in the future?
Thanks.

Advertisement

jbdanis is offline   Reply With Quote
Old 10-09-2013, 02:16 PM   #2
Member
 
GBrackins's Avatar
 
Join Date: Apr 2012
Location: Fairhaven, Massachusetts
Posts: 2,877
Rewards Points: 2,032
Default

Drill Close to Concrete Edge


I was taught that you needed a minimum of 2" from the edge of the anchor to the edge of the concrete so that would be 2-1/4" for a 1/2" anchor.

it may not have any affect with what they did, just keep an eye on it.

Advertisement

__________________
Gary

"You get what you pay for, and sometimes free costs more!"
GBrackins is offline   Reply With Quote
Old 10-09-2013, 08:04 PM   #3
43 years in construction
 
Arkitexas's Avatar
 
Join Date: Mar 2011
Location: Texas
Posts: 104
Rewards Points: 75
Default

Drill Close to Concrete Edge


The distance to the edge of the concrete is a function of the depth of the anchor. Expansion anchors apply force to the concrete in an inverted cone beginning at the bottom of the anchor. Ramset assumes the cone area to have 45* sides, thus if the anchor is 1.5" deep then it should be no closer than 1.5" from the edge of the concrete, or 4" from the edge if 4" deep. Even using this rule of thumb, be aware that concrete is typically weaker at its edges because of the faster evaporation of water during the curing process and typically less-than-optimum placement techniques and troweling.

Rick
Arkitexas is offline   Reply With Quote
Old 10-10-2013, 04:49 PM   #4
Member
 
Join Date: Apr 2012
Location: UK
Posts: 713
Rewards Points: 500
Default

Drill Close to Concrete Edge


Have they used expansion fittings, or could they have been resin-fixed?
tony.g is offline   Reply With Quote
The Following User Says Thank You to tony.g For This Useful Post:
GBrackins (10-10-2013)
Reply

Tags
concrete , crack , drill , edge


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
Taper Concrete edge to concrete edge?? rebelranger Concrete, Stone & Masonry 17 11-27-2012 11:47 AM
Using regular drill for tapcon concrete screws? crayola110 Concrete, Stone & Masonry 5 10-10-2012 04:41 PM
concrete under pavers around pool deck , pavers go to edge of pool doggie44 Landscaping & Lawn Care 0 02-27-2011 11:40 AM
Attaching bottom plate to concrete at edge near wall BlueBSH Building & Construction 13 06-13-2010 05:05 PM
Crumbling Front Porch - Part 2 - The Repair jerseyguy1996 General DIY Discussions 9 04-11-2010 07:11 AM




Top of Page | View New Posts