Transfer of 2nd story shear to 1st floor
Transfer of 2nd story shear to 1st floor
(OP)
Hello All,
I have a small residential addition to a wood framed structure. I need to transfer 2100# of shear from a 2nd story wall to a strongwall on the first floor. The catch is the strongwall is located 7' over (laterally)from the 2nd story wall. The strongwall will handle the additional shear, I just need to get it there. Any ideas? Have you heard of the building dept (Southern Calif) allowing straps? Any ideas are appreciated.
Thanks.
I have a small residential addition to a wood framed structure. I need to transfer 2100# of shear from a 2nd story wall to a strongwall on the first floor. The catch is the strongwall is located 7' over (laterally)from the 2nd story wall. The strongwall will handle the additional shear, I just need to get it there. Any ideas? Have you heard of the building dept (Southern Calif) allowing straps? Any ideas are appreciated.
Thanks.






RE: Transfer of 2nd story shear to 1st floor
Attach upper wall to floor to floor to handle load. don't forget overturning.
If floor is not adequate add framing members, straps, ties, braces, etc. to get load to strong-wall.
Basically provide load path for lateral load.
RE: Transfer of 2nd story shear to 1st floor
RE: Transfer of 2nd story shear to 1st floor
ht
Regards
RE: Transfer of 2nd story shear to 1st floor
With a horizontal offset the base shear from the 2nd story wall is applied as a concentrated load to the first floor diaphragm. You may need a drag strut in line with the 2nd story wall in order to transfer the shear force into your first floor diaphragm. You also must have columns under the 2nd story wall chords to transfer the chord forces into the foundation. This could also be down by using a beam under the shear wall.
RE: Transfer of 2nd story shear to 1st floor
If there is no space for columns then could you place a beam in place of the rim, connect the 2nd story shear wall into that beam, and design that beam with a couple located at the center of that shearwall? Then have pin connections from the timber beam to the foundation?
I ask myself because I have a similar project where pretty much none of the 2nd story walls are inline with the 1st (in plane, horizontal offset).
RE: Transfer of 2nd story shear to 1st floor
RE: Transfer of 2nd story shear to 1st floor
You should start a new thread on this one. It is considered impolite to ask a question that is not directly related to the original post.
Go to the start page and pick 'start a new thread".
Welcome to the forum
csd
RE: Transfer of 2nd story shear to 1st floor
since i am new to this site i will learn protocol.
now, if i can just find where "stat thread is"!