This is one I was able to pull off on a historic house renovation.
There was a ramp like the one on the back designed to go right on the front of this house. But, when the contractors were digging for sono tubes, they hit some debris. That gave me the opportunity to suggest constructing a masonry wall on the porch to allow it to take up a grade change without puddling next to the basement foundation and allowing me to replace the ramp with a 5% walk. It made all the difference!
This was the house after it had been altered from its original condition and before it really deteriorated.
Here is the porch under construction.
This is the ramp out back whose twin was going to be on the left side of the front porch.
That is what it takes to go up only 2'! This is a very nice ramp designed by architect Noah Greenberg. There was no good way to adjust the grade out back, so he made the best of it and did a really good job.
You can see that there is a dip in the walk to the left of the house that was needed for a 2% pitch along the face of the foundation from the walk at the porch all the way out to the lawn on the other side. It helped a great deal that the scale of the house allowed such a wide walk and big sweep around the building.
It started with granite curbs set out a few feet wider than the walk. They went from flush with the decking to slope down 5% dropping the walk 6" in 10'. The soil sloped back to the foundation of the porch along the outside of the granite for another 6" drop putting the grade 1' below the top of decking. The design has a 2% slope along the face of the foundaton and continuing across the walk setting the elevation for the dip you see to the right (Yeah, I know I'm not in the picture).
bigger look:
http://i9.photobucket.com/albums/a84...adadrawing.jpg
Here is the access route from one of the three HP spaces.
Picture that ADA ramp from out back on the front of this house. It really would have taken away from the restoration.
This work was built by a GTX member, by the way. ...and very well done I might add.
This house was once featured in a Discovery channel special "Haunted Cape Cod".
Here is a link to the saving of the house:
http://www.highfieldhall.org/