Im getting ready to make a new ramp for the front door to the house. What I have is mind is 2 pipe frames on each side for hand rails (at height that can be used like a walker) 4' wide and 5' long. It only needs to be 3" from deck to threshold.The pipe frame will have a length of pipe from side to side at height to support 2 x 6 s for ramp. 4 floor mounts on the pipes ends will anchor it.
The 2 x 6 will have a half hole drilled in the bottom to locate and lock on the cross pipe, the lower ends will be tapered to sit flat on the deck with screws thru to deck. The front edge of ramp will be with in 2" of the threshold and the same height. Will be wide enough for walker or wheel chairs. The deck is 12' wide so the 5' length of the deck will be okay and give a nice gentle rise
To drill the half holes Ill clamp 2 boards together and drill thru on the parting line in the drill press. Pipe frames will be 1" black Iron pipe and fittings. I may also cut a support block to go under the ramp at 2 1/2' for added support.
Think this will be solid enough to support a person using it for support? 16 lag screws will anchor it to the deck cant get under to use nuts and bolts. will align these flanges to an x pattern for the most strength.
Thanks for any in put.