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  1. keyPitsimplE

    Tensile strength of concrete

    Reference thread507-111215 I have an old house remodel where we need to attach hold down straps to an existing concrete basement wall. The wall is 6" thick and appears to be in good condition, but is likely unreinforced or minimally so. Based on past local experience I am certain the concrete...
  2. keyPitsimplE

    Seismic retro-fit for Hollow CMU block wall

    I have a single story residential home with hollow 8" CMU block walls and wood framed roof. Client wants to add wood framed 2nd floor. It is a 27' x 30' box with upper and lower walls aligning, so pretty simple job. There are existing wood framed lower level additions on 2 sides, so only the...
  3. keyPitsimplE

    Epoxy Anchors - field install issues

    I do not wish to belabor the pros/cons or likes/dislikes of epoxy anchors. I deal with a lot of remodels, so they are a necessary evil. That said, when the guys run into rebar with their drill, the obvious options are: 1) move to the other side of the stud pack (where possible) and try again...
  4. keyPitsimplE

    Attaching Interior Shear Wall Bottom Plate to Post-Tensioned Slab on Grade

    For what its worth, TopKnot, I always use the allowed 0.6 DL on a shear wall to help with my hold down forces. As far as friction for shear anchors, I have not done that. Honestly, I'm not sure if the code speaks to whether or not that is allowed. It seems reasonable (only because you are...
  5. keyPitsimplE

    splicing 2x12's to get longer member

    Thank you! Several of the technical advisories on that website are interesting and informative.
  6. keyPitsimplE

    splicing 2x12's to get longer member

    Indeed, CEL. Do you have a link to reports or info on the failures you are talking about?
  7. keyPitsimplE

    Bad Connections - Sistering balcony joist with no back span?

    I like a 5/16"x5-1/8" GRK washer head screw for the connection. Gets 3-1/2" embed with good strength. I up my F.S. a bit to further account for end grain weakness. (3) of those screws in a HF p.t. Ledger will get around 450 lb allowable shear in total, which will work more than fine for an...
  8. keyPitsimplE

    Bad Connections - Sistering balcony joist with no back span?

    As long as the 0.67 end grain reduction is taken AND the end grain is solid with no decay AND there is post/beam supporting the outer end AND the p.t. ledger that is attached with screws to the end grain is flashed well enough it should work no problem. I have done a very similar repair a few...
  9. keyPitsimplE

    splicing 2x12's to get longer member

    We are going to block it at the bearings and mid span. I thought about this awhile and the double offset rafter will actually be quite symmetrical. Each end will bear evenly such that it should not twist at all, even without blocking.
  10. keyPitsimplE

    splicing 2x12's to get longer member

    thank you hokie66
  11. keyPitsimplE

    splicing 2x12's to get longer member

    Thank you racookpe1978, but I don't think you understand what I'm proposing. There is no "actual" joint. Just a 25' double member with 23' overlap. That is a 23' moment arm, as I think you are seeing it.
  12. keyPitsimplE

    splicing 2x12's to get longer member

    This is indoors and covered. Using 2 full 24' DF2 rafters, spliced together and offset such that we have one member that is 25' long, with only single 2x12 protruding at each end, allowing LUS210 hangers. That is a 23' lap splice. Glue and nail gun no problem. Done.
  13. keyPitsimplE

    splicing 2x12's to get longer member

    Immensely helpful, SlideRuleEra! Thank you very much! And my thanks is not because you are supporting my hunch, it is that you took my problem at face value and dove into it with me to help me solve it. I really appreciate that. To everyone else, please know that I am certainly...
  14. keyPitsimplE

    splicing 2x12's to get longer member

    The Framer (a good one whom I know) is the one asking for options. 2x12's are solid DF2. LVL and LSL have to be ripped down to 11.25" or special order and are more $ per LF.
  15. keyPitsimplE

    splicing 2x12's to get longer member

    Thanks to those willing to consider it. As I was hoping, no one has any good reason not to do it except our natural aversion to a spliced member (probably due to having seen it done poorly so many times in existing buildings). TJI do not work because I have to match 11.25" depth elsewhere...
  16. keyPitsimplE

    splicing 2x12's to get longer member

    I know. My first inclination was that it was a bad idea, but the more I thought it seemed doable.
  17. keyPitsimplE

    splicing 2x12's to get longer member

    Not a good choice for several reasons.
  18. keyPitsimplE

    splicing 2x12's to get longer member

    I am considering splicing (2) 2x12's together in order to get a longer rafter, but also get the bending strength of a double rafter. 24' is the typical stocked length in our area and I have a roof that has a 25' span. The dead and snow loads require 2x12 DF2 @ 12" o.c. I would like to splice...
  19. keyPitsimplE

    T&G Lumber Diaphragm

    AELLC, It is not sort of OK. It is fine. Ive done this before and this building has been there since the 1970's and the roof has not sagged a bit. They even have some butt joints falling between supports, which we will not do on the new portion. The owner may even pull up all of the old and...
  20. keyPitsimplE

    T&G Lumber Diaphragm

    Several different tables tell me that 2x6 DF T&G spanning 6 feet between supports (4x10 rafters) will EASILY handle 25 psf Snow and 15 psf Dead Load. If you have some helpful information on my original question I would appreciate it.

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