kicker brace support for cantilever wood beam
kicker brace support for cantilever wood beam
(OP)
Hello,
I am designing a kicker brace to support a exterior staircase on a house going up to a roof deck. i would like to use a PSL post in the wall from which I will extend, at a 45 degree angle, a 4x4 to the bottom/side of the header at the stringer bearing. something like a 'hangman' configuration. I want to make sure my connection from the 4x4 to the psl post is sufficient. I am proposing a 1/2" diameter thru-bolt but as I make my way through the analysis based on NDS for wood construction, I am getting caught up in the min. edge distances, min. shear area, lateral design values and fators for load at an angle to members with 2 different specific gravities, etc. Does someone have a more straightforward way of analyzing something like this? I am most concerned that the load on the 4x4 at the connection to the PSL post will fail w.r.t. tearing the 4x4. The load is about 1000 lbs. and I am not clear that the 4x4 can handle that. any suggestions would be appreciated.
I am designing a kicker brace to support a exterior staircase on a house going up to a roof deck. i would like to use a PSL post in the wall from which I will extend, at a 45 degree angle, a 4x4 to the bottom/side of the header at the stringer bearing. something like a 'hangman' configuration. I want to make sure my connection from the 4x4 to the psl post is sufficient. I am proposing a 1/2" diameter thru-bolt but as I make my way through the analysis based on NDS for wood construction, I am getting caught up in the min. edge distances, min. shear area, lateral design values and fators for load at an angle to members with 2 different specific gravities, etc. Does someone have a more straightforward way of analyzing something like this? I am most concerned that the load on the 4x4 at the connection to the PSL post will fail w.r.t. tearing the 4x4. The load is about 1000 lbs. and I am not clear that the 4x4 can handle that. any suggestions would be appreciated.






RE: kicker brace support for cantilever wood beam
RE: kicker brace support for cantilever wood beam
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: kicker brace support for cantilever wood beam
i'd've thought the deflections and stiffness were possibly more critical ?
another day in paradise, or is paradise one day closer ?
RE: kicker brace support for cantilever wood beam
1) You could notch the column to receive the brace.
2) You could fasten a length of 2X to the column for the brace to bear on.
Both of these are messy architecturally, however. Last resorts.
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: kicker brace support for cantilever wood beam
I always try to do a cantilever w/o a kneebrace if it is at all possible.
RE: kicker brace support for cantilever wood beam