Hi, trying to figure out if I can span about 10ft with a 6x6 pine timber on top of a 6x6 pine post on either end with 2X6 or 2X8 rafters(+ 18" overhang past the post). this would be a shed style tin roof on a deck. all rough sawn pine.

thanks!

What is the snow load for your area?
What spacing of the rafters?

What slope is the roof.

There is lots of information needed to make a guess.

snow load = 60lbs/sqft (10lbs/sqft safety factor built in)
rafter spacing 18" (but could be 12" if needed)
slope could be 4/12, 5/12, or 6/12. was planning on 6/12 but its a bit close to a window so I am leaning to 5/12.

thanks!

One more question, what is the run of the rafter?

The run is about 10ft.