#1  
Old 08-04-2006, 07:36 PM
Laborer
 
Join Date: Apr 2006
Location: Upland, Ca
Posts: 76
Default rebar in block to hearth

I am going to fill the core of my blocks tomorrow.

does anyone have any good tips?

Can the rebar stick up so that it will tie into my hearth or should I cut it off?


thanks
Mike
Reply With Quote
  #2  
Old 08-04-2006, 08:01 PM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default

It's great if your rebar sticks up into the slab to tie it to the base: Just don't let it get near the surface. Rusty rebar can grow and cause cracks.

For the block holes you aren't filling: Just jam crumpled cement bags into the holes to block them up.

Good luck, thats LOTS of work.
Reply With Quote
  #3  
Old 08-04-2006, 08:15 PM
Laborer
 
Join Date: Apr 2006
Location: Upland, Ca
Posts: 76
Default

Thanks DMUM

I am going to use concrete backer board and leave it there.. so that will cover thoe holes.. only kicker there is i will need to cut holes in thebacker board for the rebar.

I had help for the slab and have stacked the blocks .. I was hoping filling the cores would be easy... I think mixing the cement for the hearth willbe the most trouble but I do have a mixer.

Hope my back holds out.

Thx again

Mike
Reply With Quote
  #4  
Old 08-05-2006, 04:44 AM
christo's Avatar
Master Builder
 
Join Date: Feb 2006
Location: Eastern NC
Posts: 910
Default filling cores

Glad you have a mixer. Make sure you have plenty of concrete materials.

Filling the cores, even every other one, took more concrete than I thought. I think I remember it was ~.25 cu ft to fill both cores of a standard block.

Finally a small break from the +90 degree weather we've been having. I'm going to play with my oven project today!!!
__________________
My oven progress -

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #5  
Old 10-05-2006, 11:47 PM
Peasant
 
Join Date: Sep 2006
Location: Australia
Posts: 27
Default Filling cores over opening

The suggestion to use crumpled up cement bags to prevent the hearth pour from going down the empty holes is a good one. I was wondering how I was going to overcome this problem. My question is in regards to the layer of blocks over the stand opening resting on angle iron.

Should each of these holes be filled? What is the simplest way to stop the concrete from coming out the bottom between the angle iron?

Steve (still planning, sourcing materials, and finding the time to get started)
Reply With Quote
  #6  
Old 10-06-2006, 07:03 AM
maver's Avatar
Master Builder
 
Join Date: Aug 2006
Location: Puyallup, WA
Posts: 571
Default over opening blocks

I did not fill these. I think the purpose of filling the cores in the stand is to create a rigid column. Since the blocks over the opening are single layer there is no added rigidity by filling them - just extra work. If you wanted to fill the voids (did you spend extra time coloring all your drawings in kindergarten ) then you could support a wood form under the opening during the pour. You would be depriving spiders of a nice home.
Reply With Quote
  #7  
Old 10-06-2006, 07:03 AM
CanuckJim's Avatar
Il Pizzaiolo
 
Join Date: Jan 2006
Location: Prince Albert, Ontario, Canada
Posts: 1,479
Default Mortar coming out

No doubt, you'll have lots of brick and block pieces lying about. Drop a couple down the cores of the angle iron block where the gaps are. Sure, you'll get some water leakage, but not a lot. Works.

Jim
Reply With Quote
  #8  
Old 10-06-2006, 11:20 AM
redbricknick's Avatar
Journeyman
 
Join Date: Apr 2006
Location: Los Angeles
Posts: 271
Default core.

When we poured our hearth slab, we came up with what we thought was a pretty cool innovation. We put rebar in all of the cores, and left it five and a half feet above the top of the cores before filling them. After it was cured, and our form was built, we bent the rebar over to create the rebar mesh for our hearth slab.
Reply With Quote
  #9  
Old 10-06-2006, 12:48 PM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default

I found I couldn't bend re-bar at all. It was too tough to bend, and if i scored it at the bend point it broke off. Any hints on re-bar bending?
Reply With Quote
  #10  
Old 10-06-2006, 01:39 PM
redbricknick's Avatar
Journeyman
 
Join Date: Apr 2006
Location: Los Angeles
Posts: 271
Default get bent

Quote:
Originally Posted by dmun
I found I couldn't bend re-bar at all. It was too tough to bend, and if i scored it at the bend point it broke off. Any hints on re-bar bending?
To bend our rebar, we first had it anchored, then slotted an eight foot metal pipe over it to bend it. A vice would suffice if the rebar wasn't anchored into cores like ours was.
Reply With Quote
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 On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 03:02 PM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
2006/10 Forno Bravo, LLC