Abbey Medical contracted me to build a ramp for an ICBC client.
Wheelchair ramps need to have a maximum slope of 1:12, and as the deck was 20 inches higher than the ground, that calls for a 20 foot ramp. They also needed a ramp from the front door to the deck, which was another 7 feet.
I pre-cut the plywood at my shop and gave it 3 coats of porch paint with some anti-slip sand thrown on the second coat.
Then I built for a day and a half. It was nice to have a reasonably solid foundation to work with.