2x6 T&G concentrated load sharing

[Triangled]

contractor called half way through installing solar panels on roof of hillside house. The inspector stopped them upon seeing and hearing that the original roofing had been removed and new OSB was installed over new 2x6 ripped sleepers over the existing roof deck.

The existing roof deck is 1970s era 2x6 T&G on a hillside house with topographical wind issues. The sleepers at 16" o.c. are parallel to the T&G. The solar modules above are intended to be supported at 32" oc perpendicular to the sleepers and 40" o.c. parallel to the sleepers.

The way I am seeing it, there is 32" tributary width of wind load coming into a single sleeper. And a single sleeper, parallel to 2x6 T&G, is conceivably over a single 2x6 T&G, which s conceivable held down with 2 nails at each support 5'-4" oc.

My concern is holding down the 2x6 T&G. And, should I hold down the single plank, or may I safely rely upon boards to the left and right for load sharing.

And I would sure appreciate any additional comments and experiences.

 

[phamENG]

I haven't had to deal with T&G roof deck in a while, but I'd start here: Link

My first instinct is to require the contractor to run long screws (like multiply truss screws or big Timberlock screws) through the sleeper and into the framing below (predrilling as needed).

 

[Triangled]

thank you, i certainly plan to do that