yeah we haven't had an earthquake in that long either......but the code still requires that it be accounted for in the design......not california strong but accounted for in the connections and shear walls.......since you are in a coastal area you will need to talk to your local building official to see what wind loads you will need to use in the design as the wind map in the codes won't account for local variances.......and that 140 mph wind won't just be applied to the roof but also perpendicular to the wall.......which makes your front wall with the openings even more vulnerable to lateral loads......Jack
It appears that even the Simpson Strong Tie system will not work for a 17" or 18" wall section that is 11' tall.
I will likely change to the wall height divided by 3-1/2 calculation. That would mean front wall sections will need to be a minimum of 35" wide.
To keep overall length at 36' I will need to abandon the 3 door concept, and go to one 16' wide door, and one 10' wide door.
I find many code requirements to be absolutely absurd.
In the same town as the proposed garage; I own, and still use, the house I was raised in, a 288 year 28'x36' house that my parents bought in 1932.
Four main bowed rafters (they were ship builders), with purlins, and wide roof boards run vertically; rafters/collar ties pegged together.
It has stood proudly on the same open, windy, coastal hill for 288 years.
How many hurricanes has it been through?
I am thinking I should tear it down immediately,.... to build something safe .....TO CODE ..... OF COURSE !!!!
Oh..... and in 1730, the house was built from used (salt works) lumber.....not grade stamped SPF!
Scary, isn't it ???