Patio Pour Smoothing Out Below Grade Overflow To Prep For Pond Install - 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!

Like Tree7Likes
  • 1 Post By Windows on Wash
  • 1 Post By jlhaslip
  • 2 Post By Windows on Wash
  • 2 Post By homeimproverjoe
  • 1 Post By Windows on Wash
Reply
 
Thread Tools
Display Modes
Old 04-13-2017, 10:57 PM   #1
Member
 
Join Date: Nov 2014
Location: Vestavia Hills, Alabama
Posts: 323
Rewards Points: 640
Default

Patio pour smoothing out below grade overflow to prep for pond install


Pics below hopefully help illustrate the issue. I will be installing a pond/water feature adjacent to my concrete poured patio. I want to use the patio edge as the left boundary of the pond. To do this, I need to make cuts to get a clean edge on the underside of the concrete so that I can get 2 rows of concrete block below it. See below...

Finished design (conceptual drawing)



Area of concern:





What would be the best tool/approach to knock down this overflow and get a clean edge on the underside of this slab? A mason chisel, an oscillating multitool with a masonry blade?

I will be digging under the lip of the patio in order to insert two rows of concrete block under this slab so that the blocks are flush with the current patio edge. Pond liner will be laid in and overlapped between the patio bottom and the top row of concrete block. The other 3 sides of the pond will be built up in similar fashion, with two rows of concrete block, then capped with 4 inch cap block. Liner will be secured by overlapping the top row of concrete block, with the 4 inch cap block resting on top of the liner.

On the patio edge, there should only be about 1/8 inch clearance between the top of the block and the poured concrete, so I need a relatively smooth underside so as not to rip the liner but to keep it held secure.

This will be a dry stack pond wall structure. No mortar involved.

Last edited by homeimproverjoe; 04-13-2017 at 11:05 PM.
homeimproverjoe is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-13-2017, 11:14 PM   #2
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 22,040
Rewards Points: 7,792
Blog Entries: 40
Default

Re: Patio pour smoothing out below grade overflow to prep for pond install


Angle grinder with a diamond blade.

Don't beat on it as it will blow out on a crack.
homeimproverjoe likes this.
Windows on Wash is online now   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-14-2017, 02:47 AM   #3
Member
 
jlhaslip's Avatar
 
Join Date: Dec 2009
Location: Edmonton, Alberta
Posts: 5,975
Rewards Points: 708
Default

Re: Patio pour smoothing out below grade overflow to prep for pond install


14 inch gas saw would be my choice if you had one in the garage, otherwise as per above.
homeimproverjoe likes this.
__________________
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 04-14-2017, 08:45 AM   #4
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 8,921
Rewards Points: 1,918
Default

Re: Patio pour smoothing out below grade overflow to prep for pond install


Ayuh,.... That feature shoulda been cast into the patio,....
Bondo is offline   Reply With Quote
Old 04-17-2017, 10:19 PM   #5
Member
 
Join Date: Nov 2014
Location: Vestavia Hills, Alabama
Posts: 323
Rewards Points: 640
Default

Re: Patio pour smoothing out below grade overflow to prep for pond install


Quote:
Originally Posted by jlhaslip View Post
14 inch gas saw would be my choice if you had one in the garage, otherwise as per above.
As luck would have it, one of my neighbors just dropped off his Stihl TS 420 for me to use on this project. Same great guy let me use his DeWalt jackhammer - the spade attachment made quick work of the pond dig. The Stihl cuts through concrete like a beast. Gotta love these power tools - and helpful neighbors that don't mind sharing! Thanks Jim D!






Last edited by homeimproverjoe; 04-17-2017 at 10:43 PM.
homeimproverjoe is offline   Reply With Quote
Old 04-18-2017, 07:33 AM   #6
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 22,040
Rewards Points: 7,792
Blog Entries: 40
Default

Re: Patio pour smoothing out below grade overflow to prep for pond install


Yep.

Both of those are expensive pieces and the blade on that cut off saw is over $100.

Depending on how much cutting you do, might not be a bad idea to throw the neighbor some cash for the blade life.
jlhaslip and homeimproverjoe like this.
Windows on Wash is online now   Reply With Quote
Old 04-18-2017, 09:52 AM   #7
Member
 
Join Date: Nov 2014
Location: Vestavia Hills, Alabama
Posts: 323
Rewards Points: 640
Default

Re: Patio pour smoothing out below grade overflow to prep for pond install


Quote:
Originally Posted by Windows on Wash View Post
Yep.

Both of those are expensive pieces and the blade on that cut off saw is over $100.

Depending on how much cutting you do, might not be a bad idea to throw the neighbor some cash for the blade life.
Good suggestion. He's definitely on the Christmas list! Crazy thing is I just met the guy a few days ago! Of all things, he's retired from the pool construction industry.
Bondo and Windows on Wash like this.
homeimproverjoe is offline   Reply With Quote
Old 04-18-2017, 11:16 AM   #8
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 22,040
Rewards Points: 7,792
Blog Entries: 40
Default

Re: Patio pour smoothing out below grade overflow to prep for pond install


Quote:
Originally Posted by homeimproverjoe View Post
Good suggestion. He's definitely on the Christmas list! Crazy thing is I just met the guy a few days ago! Of all things, he's retired from the pool construction industry.
That's a good neighbor to have.

You better take him out to dinner too and see if he has access to an excavator. Pool time after that.

Bondo likes this.
Windows on Wash is online now   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
Brick patio install gone wrong Bubbagump Concrete, Stone & Masonry 22 12-28-2016 07:36 PM
Drain install in patio rss1080 Concrete, Stone & Masonry 5 04-19-2015 01:14 PM
Patio area for new construction: Pour slab and modify later, or something else? IndyGopher Concrete, Stone & Masonry 15 03-08-2014 02:05 PM
Above Grade Stone Patio repair? BSYarg Building & Construction 2 04-20-2009 07:32 PM
Help me to install a paver patio 707782 Landscaping & Lawn Care 5 09-28-2007 08:42 PM




Top of Page | View New Posts