The Smiths want to replace the stairway that leads from their porch to their sidewalk with a ramp. The porch is 3 feet off the ground. They decide to start the ramp 12 feet away from the base of the porch to make it convenient to walk up.

Question

Mathematics

Edwin Fitzpatrick

17 September, 10:39

The Smiths want to replace the stairway that leads from their porch to their sidewalk with a ramp. The porch is 3 feet off the ground. They decide to start the ramp 12 feet away from the base of the porch to make it convenient to walk up.

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Answers (1)

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Destiney Webster · Answer 1

Normally you need 1 foot run per 1 inch rise so to rise 36" you need a 36 foot ramp. If you want to start the ramp 12 feet from the porch you will need to do a switch back - - that is, zig zag the ramp so as to get 36 feet in length.