If you want to repair change or build a new shed ramp, why not get this idea.
For a sturdy and cheap garden shed ramp you can use recycled materials.
4 x 4s treated lumber as stringers, and fence pickets as ramp boards decking.
Step 3: Install the ramp decking
Step 1: Attach the Stringers to the Ledger Board
Make sur your ledger board is fasten very weel in your door threshold.
All the ramp weight will by hold on this ledger board.