Comment: I need a ramp off my back porch to my back yard believe it or not for my dog who is unable to walk without the assistance of a doggie wheel chair. Ridiculous...yes without a doubt, but he is too heavy for me to carry up and down the steps. My porch is 3 feet off the ground and i need a ramp that will extend with a slight slope out to the yard. It does not have to be built to last forever, lets face facts the dog isn't going to live that long. It can be plywood with supports, I will seal it and indoor/outdoor carpet it. My husband is currently deployed and I just don't know how to do this.