Many thanks Jay for your reply, much appreciated.

I have one more questions regarding location of the scarf along the the plate. The image is attached. I know the principles of location this joint - it should be off the post (probably somewhere in the area highlighted on yellow) to avoid highest bending and shear stresses. The question is shall I add red braces to take some proportions of the stresses off the scarf? I hope it's clear what I ask for.

Thanks,
Krzysztof

Attached Files
shed.JPG (172.6 KB, 205 downloads)