Any of y'all ever done block walls with sealtight?

Status
Not open for further replies.
L

LouisianaApprentice

Senior Member
Location
Forest Hill, LA, USA
I was looking the other day and had no idea but sealtight is rated to be encased in concrete and buried 1/2"- 1" trade sizes. I was thinking man this would be great for doing CMU block wall buildings. U could roll up a bundle after you stub out of the slab and kinda of hold up the length u need and go ahead and slip a box on. It'd be no taped couplings just one continuous piece. Also sealtight is cheaper than EMT especially when factoring all the waste. Seems like a pretty decent idea I'd just be worried about the sealtight flattening out.
 
petersonra said:
No worse then if it is under or in a slab
Click to expand...
True, but still very hard to keep straight and in a slab its even harder to protect from a concrete guy stepping on it. If that happens where its secured to rebar, it will twist and kink for sure...better have a string in it...
 
LouisianaApprentice said:
I just don't know how I would secure the box well....like u know with EMT once it's in a block cell it can only move so far. With sealtight it could possibly fall back out of there.
Click to expand...
You secure the box the same way, regardless of conduit... A piece of wood/pipe and tie wire... Why would that change?
 
rambojoe said:
You secure the box the same way, regardless of conduit... A piece of wood/pipe and tie wire... Why would that change?
Click to expand...
We always just used the strength of the stub coming out of the slab to hold it spaced in the wall properly and put and offset or whatever we need to get it just right. Idk how to do that with sealtight... Maybe they make a special box with ears for CMU.
 
I wouldnt use sealtight to secure... Tape box, bail wire through back then wrap wire around 6" of pvc to pull the box forward untill block is complete...i thoughr you meant chase up and out of cell.. I definitely wouldnt use sealtite out of a underground stub!!! Its a line brake... That wouldnt be a easy pull
 
LouisianaApprentice said:
I was looking the other day and had no idea but sealtight is rated to be encased in concrete and buried 1/2"- 1" trade sizes. I was thinking man this would be great for doing CMU block wall buildings. U could roll up a bundle after you stub out of the slab and kinda of hold up the length u need and go ahead and slip a box on. It'd be no taped couplings just one continuous piece. Also sealtight is cheaper than EMT especially when factoring all the waste. Seems like a pretty decent idea I'd just be worried about the sealtight flattening out.
Click to expand...
Some of the block walls that I have done are pretty tall. 40" pieces of EMT will make some friends with the block layers. They still have to put their blocks over the conduit. They won't be too happy if the have to slide their blocks over 20' of LFMC. As far as securing the box. once you have your appropriate ring installed, you can use a small piece of block to wedge it in and ask the block layers to dump a little mortar mix in the cell.
 
Is there anyone here who also uses pvc inside block walls? I mean non of the above's mentioned pvc which is pretty simple stuff to install and even the block layers are pretty capable of glueing in the uphill next lengths for you if you have to be elsewhere on some other job....... I promise em a case a beer and that works every time.....
 
Yes. Pvc is the standard...and 4' increments is about max. You cant expect them to lift blicks higher than their head. And yes, a case of beer is handy! This brings back floods of memories doing public school gyms and multi purpose rooms..absolute crazy amount of pipes everywhere! From the shock clocks to f/a and fly fans, you'd think it would be easy to keep up w/blockies. But mixing elevations and cut outs can keep you honest.. years on those dang scaffolds...
Edit- i let the blocks get arms length below the block, reach down, pull the plug off the pipe then glue it. So really, ill use anyywhere from 4' to 8' sticks depending on where the scaffold is... You do it as if you were doing the block...and this is all for very fast blockies...
 
Last edited:
Status
Not open for further replies.
Top