URM Wall
URM Wall
(OP)
Hello,
We are creating an opening on a wall. Alterations no the wall are greater than 10%. What are some retrofit options. This building is URM with wood framing. Two story building, the alterations (openings) are going to be done at the first floor. it is about a 60'x80' building.
JO
We are creating an opening on a wall. Alterations no the wall are greater than 10%. What are some retrofit options. This building is URM with wood framing. Two story building, the alterations (openings) are going to be done at the first floor. it is about a 60'x80' building.
JO






RE: URM Wall
1) Estimate the lateral demand in the remaining structure to see if it works without modification.
2) Reinforce the remaining masonry with steel/FRP reinforcing etc.
3) Introduce and strategically locate new bracing, moment frames, or shear walls such that the strength and stiffness lost is effectively replaced.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: URM Wall
I usually make them add reinforcing in the cells as my jurisdiction does not allow URM. I am not familiar with how to design FRP but I am interested in learning more.
RE: URM Wall
Also, I would have a continuous ledger on the wall to drag my lateral loads into the frame correct? How would I anchor the ledger to the URM, any idas? I have never done URM walls, any Hilti fastner?
Thank you
JO
RE: URM Wall
You would need a ledger collector. You could fasten it to the masonry with something like Hilti HIT-HY20 anchors which are intended for hollow block.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: URM Wall
RE: URM Wall
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: URM Wall
RE: URM Wall