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-   -   Hanging a joist in an 1895 brick wall (http://www.diychatroom.com/f19/hanging-joist-1895-brick-wall-99822/)

billydwilliams 03-28-2011 10:16 AM

Hanging a joist in an 1895 brick wall
 
I already looked through the post for sistering a joist in brick wall below and it did not quite cover what i am looking to do...

http://www.diychatroom.com/f19/siste...ck-wall-38158/

I am rehabbing a brick rowhouse that was built in 1895. I have the ceiling of the kitchen opened to the joists and I am trying to repair some water damage and shore up the floor above before i run wire and close it up.

There is a section of three joists that are framed around a chimney stack. The joists on the outside of the chimney are not doubled. (I assume in 1895 people were using heartwood joists...true 10"x2" and at the time you had to have at least four framed joists before you had to double up the supporting joists that are set into the double brick supporting walls. In another room of the house there is a fireplace that has four framed joists with a double joist on each side)

Since I have the ceiling open, and the wood definitely has the feeling of frailty with age, and at the other side of the room some water damage has happened, I wanted to start adding a few additional joists to the brick to shore it all up.

The only thing i can find to hang a hoist in the brick wall is a Simpson Concrete joist hanger.: http://www.strongtie.com/products/co...MU_MASONRY.asp

I was going to clear out the mortar and slide this in between a set of bricks and hang my joist. But i can't figure out how to secure this. This is a pretty uncommmon issue, I am assuming because none of the hardware stores even carry this masonry hanger and it will need to be special ordered. Can someone give me any sort of validation that i am on the right track.

Thanks in advance.

Clutchcargo 03-28-2011 01:44 PM

How about attaching a ledger to the brick and then hanging the joists off of the ledger with a standard hanger. It's cheaper and quicker.

billydwilliams 03-28-2011 01:57 PM

Thanks for the input. I was wondering about that myself.

I was under the impression that you need to access the outside of the brick wall to hang a ledger. I am in a set of rowhouses and cannot access the outside of the brick wall since it is a shared wall. Would that affect the ability to use a ledger or is that irrelevant?

Clutchcargo 03-28-2011 03:41 PM

How thick is the wall?
You may be able to use one of Simpson's epoxy products to attach the bolts to the wall.
Edit: it's Simpson Epoxy-TieŽ Anchoring Adhesive. For brick I think you need to be able to drill an 8" deep hole.

stuart45 03-28-2011 04:09 PM

1 Attachment(s)
Most of our houses are brick so this is quite a common job here.
If you cut out the joint with a plugging chisel and put the hanger in and then fill with mortar it will hold. Once the joist is in it won't go anywhere.
A hanger like this is about $5.
Attachment 31347


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