Locating posts for a patio cover

roadkyng

Greetings.
I am planning a patio cover over a 20' x 20' slab that is attached to my house. I will be using 4 steel posts bolted to the slab for support. My question is how do I set the posts square to the house and square to each other? The main beams are 4 x 12 cedar so I am concerned about bolting the posts down then find out I am a degree or few off and the beams won't locate properly.

thanks

dec-conc-artisan

6-8-10 triangle,,, this is 9th grade geometry &, yes, i slept thru it too ! ! !

Daryl

as dec-conc-artisan states .. 6-8-10 triangle works well... and any multiple of it.. ie 12-16-20 works as well...