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Hello Everyone !
The allowable and the design stress is based on the grade as well as species.
Looks pretty solid. You can get the calcs done but before you do, have the lady take the photos into the building inspector where it will go and see what would they would need.
Assuming a snow and dead load of 60 lbs/sq/ft, the
That's a significant amount of weight. In beam
A beam 10" deep seems quite undersized for
Deflection (sag) is also an issue - if
An old rule of thumb for beam sizing is an inch
Applying a less restrictive rule of thumb:
If you're on good terms with your local building
If I read this correctly you have trusses of some nature (as can not see them) every two feet. The trusses would govern the load capacity of the roof as the ridge is not load bearing. If one just had roof joist attached to the ridge with no tie beams it would then need to be considered as a load bearing beam and sized accordingly. Much more information on geometry of trusses is needed.