Putting trusses on the disabled ramp

I'm putting trusses on the posts I installed a few days ago. These trusses will support the main beams of the disabled ramp. I am using the following:
4"x4" posts
2"x4" trusses and walkway boards
2"x6" main beams.
The wood is supplied as 8 feet long. I use siding/decking nails, 5/16 lag screws and 3/8" bolts 8" long.