Curved wall top and bottom plate detail

[AZPE]

At curved walls what have others done for construction/details at top and bottom plates. Typically at the top plates I use (4) 3/4" plywood plates that overlap each other by at least 8" (staggered) and attach them with 8d nails at 4" o.c. staggered then I put a 2x ripped block beneath that for sheathing/drywall attachment which is nailed into the plywood plates with 16d at 6" o.c.

For bottom plates I have had some difficulty justifying using treated plywood plates but have used (2) 3/4" treated plywood plates with similar attachment except 8dx1.5" nails and then again a ripped block nailed to the plywood plate and then have the anchor bolts extend through the blocking and then strap the outside of the curve along the blocking with a Simpson CS16 strap.

What do you think and/or what have you done differently?

Thanks in advance!

 

[structuralaggie]

Sounds good to me, except the CS 16 strap on the sole plate seems a little excessive. Anchor bolts should be sufficient.

 

[Joe52]

AZPE
The problem with that construction is it is usless if the wall is a shear wall. Nailing into the edge of plywood gives you no value and splits the plywood. If it a structural wall you get 18-24" timberstrand rim board and layout the radius as before. Yes it is a pain but it is substantially better that what you described. And yes the sill plate also.