anchoring into existing brick wall
anchoring into existing brick wall
(OP)
i need to support a new metal joist floor on existing two-wythe exterior solid brick wall with an air cavity. the two wythes are bonded together with brick units in what i think is called common bond pattern. the wall is only 8" thick. the building is two story high and was built in 1950's. I am using marino joists that are connected to a joist track and the track will connect to the wall. Hilti recommends adhesive anchors which i do not like very much because of their loss of strength in case of fire. Any ideas to the kind of anchors to use?






RE: anchoring into existing brick wall
That being said, I would grout the collar joint solid, and probably install through bolts and fish plates, unless the brick was in very sound condition.
RE: anchoring into existing brick wall
Dik
RE: anchoring into existing brick wall
If the wall is only 8 inches thick, it really doesn't have a cavity. Don't know why you would try to grout it as epr suggested if the two wythes are adequately bonded. If they are not bonded properly, could retrofit brick ties by drilling and injecting the type with sleeve which prevents the grout from escaping into voids. See Hilti.
I think the Hilti adhesive anchors, again with sleeves, are appropriate for connection of the track. Anchor should engage both wythes. If fire is a consideration, protect the anchors. Don't you have to protect the metal floor joists anyway?
RE: anchoring into existing brick wall
To take outward load in a fire event you could put a continuous ledger along the length of the wall and then place through bolts at every 6' to take lateral loads under fire. This is better for progressive collapse too.
RE: anchoring into existing brick wall
I would get the anchor rep involved, and plan on spec'ing pull tests...
RE: anchoring into existing brick wall