Simpson A-35 (framing angle) suitable for this application

constructionengineeringframingtimber-framing

Would an A-35 be suitable for the rafter>top-plate connection shown here? Would I need one on both sides of a rafter, or just on one side? Existing structure (grey) is 12'x 18', 6" CMU block w/rebar, located in Central California (seismic zone). Essentially putting a new "hat" on the building which will be a small sleeping loft, want to make sure everything is to code, particularly hardware connections. General advice as to fastener/connection details is also greatly appreciated. (i.e. Would simply toe-nailing into the top plate be suitable? Are framing-angles even necessary for transferring horizontal loads/preventing shear in this instance?) Thanks All!
Rafter/Top Plate Detail

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Best Answer

Yes, a framing angle such as an A35 is required to transfer the horizontal roof load to the wall and to resist uplift from wind hitting the overhang. (I don’t think an A35n is strong enough.)

I prefer the H1, but one A35 is acceptable. (Two A35 is not required.) Make sure you Install the A35 correctly by bending the tab so the tab can be nailed down into the top plate and sideways into the top plate.

Btw, the top plate on a masonry wall requires a 3” square washer and I’ve never seen then smaller than 5/8” x 10” long spaced a max of 32” oc in your location.