Replies

1. 
   florida | Nov 25, 2019 11:37am | #1

   Notching as joist effectively turns the joist into a smaller framing member. You can probably notch and then set the bottom of the joist into a hanger.

1. 
   oops | Nov 25, 2019 06:51pm | #4

   Ultimately, the load the the joist is carrying at this point will determine the amount that the joist can be notched. The primary forces at this point is vertical shear. There is no bending forces to be considered.
   If I remember correctly, shear value of #2 yellow pine is +/- 1000#/sq.in.
   If you have an area of (5"x1.5") 7.5 sq.in x1000 =7500#, is the load that can be supported at that point.
   Remember. This information is worth exactly what you have paid for. Contact your friendly local engineer before proceeding.

2. 
   mike_augustine | Nov 25, 2019 12:45pm | #2

   Notches at the end of floor joists are addressed in the code; 1/4 of the depth of the joist is permitted for sawn lumber.
   If that doesn't get you where you need, this would be a perfect application for top-chord bearing open web trusses, which would likely have 3" of material above the sill. If you did this with a double sill plate you'd get your 6" above the block.
   Or if trusses aren't an option, you could rip sill plates to match the 8" block and then use top-mount joist hangers to hang the joists flush with the sill plate.

1. 
   muse_renovate | Nov 25, 2019 02:32pm | #3

   Thanks; I'll look into both options.

2. 
   muse_renovate | Nov 30, 2019 10:24am | #5

   Top chord bearing open web trusses sounds like a good solution, and may be the best, but I wanted to use I joists on the part of the floor framing that calls for a cantilevered wall. I'm wondering if TJI's can be ordered or modified to be top bearing. This would save me from having to demo the top course of block, not to mention a lot of expense on hangers. I haven't seen that done, but it seems doable. Of course, what's doable isn't always what can get approved. What do you think?

1. 
   mike_augustine | Dec 01, 2019 10:54am | #6

   TJI's definitely cannot be top chord bearing and you cannot remove any top or bottom chord material on them.
   And floor trusses can be designed for almost any situation, including cantilevers. An added advantage of using floor trusses is they'll be designed for your particular situation and engineered accordingly.

1. 
   muse_renovate | Dec 01, 2019 12:05pm | #7

   Thanks for the help. After giving it a little more thought I came to the same conclusion, but it always helps to get a new perspective.