View Full Version : Hangers for floor joists

Kathy Thompson
04-27-2008, 05:03 PM
I inspected a house this past week where hangers were used to support the floor joists as opposed to the joists resting on the sill plate.
This method was only employed in one wing of the basement (under the family room) and the rest of the joists were resting on the sill plate as is common practice in our neck of the woods.
The house was built in the mid 90s and the floor joists were 2x10s spanning a distance of about 15 feet. One end of the joist were adjacent to the garage and the other end was an exterior wall.
I did find a hanger that appears to be similar to what I saw on the simpson website under masonry hangers page 142.
Have any of you seen this practice before or is it common in your area?
Any help would be appreciated.

Rick Cantrell
04-27-2008, 05:32 PM
I don't have the IRC at home, but I think that joist hangers are now required.
Someone correct me if I'm wrong.

Mitchell Meeks
04-27-2008, 06:13 PM
I don't think you need to necessarily look at the code book here. It is supposed to be attached at the back of the clip to the framing member. Not on top, if it is attached at all. You would also toenail into the bracket into the lumber. Why else would the nail holes be there. With the block there, there is no way to do it.
I would suggest you look at the Simpson web site. Here is one link for the hanger. HUTF/HUSTF Heavy Duty and Double Shear Joist Hangers (http://www.strongtie.com/products/connectors/HUTF-HUSTF.asp)

Rick Sabatino
04-27-2008, 06:27 PM
I would not put a lot of faith in those. They appear to be hanging themselves. Does the family room look like an addition? These don't look like something that would have passed a drawing review.

Kathy Thompson
04-27-2008, 07:34 PM
It doesn't look like an addition.
Here is a picture of the rear of the house.
The pictures were taken at the rear wall adjacent to the deck.

Scott Patterson
04-28-2008, 06:31 AM
Those look like common wood to wood hangers and not concrete to wood hangers. It also looks like they are missing several fasteners; every hole needs to have a fastener in it.

This is from the Simpson site, it shows what is needed for a CMU to wood connection. MBHA Masonry Hangers (http://www.strongtie.com/products/connectors/MBHA_MASONRY.asp)

Nothing wrong with the wood joist being connected with a hanger to the concrete wall or the CMU wall, it just needs to be done with the proper hanger and fasteners.

Michael Thomas
04-28-2008, 07:05 AM
Simpson's current hanger hole codes:

Markus Keller
04-28-2008, 07:25 AM
Those look like the simpson structural hangers to me. They have a top flange and flange on the other side to lay on top of and straddle a beam. They are typically used to support joists off of an LVL, etc. I have a few left over from a job in my garage.
The hangers are probably sufficient to handle the joist load. I have to agree with Scott that the real questions is 'attachment'. I doubt they are properly attached to the wall. There aren't any anchors showing on the face and they don't have any holes on the top flange (unless field drilled). Just laying on the wall isn't going to cut it.