@BillGates are those attic trusses, or regular trusses that have just had flooring put down? I ask because of @nofam commenting on not being able to put anything too heavy up there.
The attic trusses in our place have 190mm top and bottom chords. I don't know what kPa they're rated to, but the look bloody strong compared to the standard trusses adjacent to them. Not that we can store anything up there that's overly heavy since we still need to it lift up through the hatch anyway.
The down side of our attic space is our roof isn't very high - so it will be more of a "hands and knees" operation, still worth having it for the extra storage though.






