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 08-18-2009, 09:40 PM   #16
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 3,402
Rewards Points: 2,386
Default

Lots of newbie Concrete Fountain Questions!


you're going to dick around w/foam/pvc pipe/etc so much you'll weaken the slab thru thinner thickness therefore strength,,, i'd use plastic tubing just as we've done on ' weeping walls ',,, then again, its YOUR ' tomestone ' & its only rocket science if you're building rockets,,, the difference 'tween expansion/contraction coefficients of concrete & plastic tubing is infinitesimal ',,, go have a beer, fergawdsake ! ! !

stadry is offline   Reply With Quote
Old 08-19-2009, 12:01 AM   #17
Concrete & Masonry
 
Join Date: Nov 2008
Location: Wisconsin
Posts: 2,792
Rewards Points: 2,136
Default

Lots of newbie Concrete Fountain Questions!


I wish I could give an accurite explanation, but I would be very careful with any tubing/pipe going thru the concrete. When the pipe enters perpendicular, it's not much of an issue. When it runs thru the length of the slab, or tombstone in this situation, it definately creates a weak point.

I've torn-out my fair share of concrete, & noticed that any entombed pipes always do more harm than good. In my situation, it's usually an old farm job where the farmer thought it would be advantageaous to throw some old crap pipe (or any random steel) laying around in the crete. Usually creates the wekest point of the whole slab.

In your application, I think I wold use a minimal steel pipe & weld a few light rebar directly around the pipe.

I would also look deeper into a counter top mix, as this may be your best chance for success. I have to give you credit, though, if this indeed your headstone. This very thought has crossed my mind many times. Luckily for me, that's as far as it ever went!
jomama45 is offline   Reply With Quote
Old 08-19-2009, 12:57 PM   #18
Newbie
 
Join Date: Aug 2009
Posts: 8
Rewards Points: 10
Default

Lots of newbie Concrete Fountain Questions!


It will only be my headstone if my wife doesnt like it! thanks for the advice on the countertop mix.

Based on all of the above I am not running the pipe through the long run "up" the tombstone, I will run that on the outside. then the only pipe coming through the concrete will be the short outlet pipes through the 4 inches from "back" to "front".

Im still not clear on whether it would be better to actually embed the pipe in the concrete or to leave 3 holes in the concrete the size of the pipe (plus a bit of tolerance) and insert the pipe after curing, maybe with some silicone goop to keep it from shifting around/pulling out. Which is less likely to cause weakness? Also with the "hole" approach I suppose there is some chance of backflow seepage of water into the hole, which I presume is more likely to cause problems in the long run?

Last edited by wps74; 08-19-2009 at 01:01 PM.
wps74 is offline   Reply With Quote
Old 08-19-2009, 03:08 PM   #19
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 3,402
Rewards Points: 2,386
Default

Lots of newbie Concrete Fountain Questions!


never saw anyone who wanted to take the hard route as much as you do,,, w/all your dickin' around w/pipe, you'd have been done 2 days ago using plastic tubing silicone'll stop any backflow,,, this is a much easier job that you're tryin' to make it imn-s-hfo quit thinkin', postin', & DO ! ! !

stadry 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
Sleeve options for plumbing through concrete? Bruce L Plumbing 6 06-14-2008 10:38 AM
Extending Concrete Patio Slab bobo Building & Construction 6 04-17-2008 01:17 PM
Very Newbie with tons of questions Aerovette Building & Construction 37 06-13-2007 11:04 PM
Concrete questions Focus2005 Building & Construction 1 05-31-2005 06:05 PM




Top of Page | View New Posts

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