How to build a 10 foot outdoor household wheel-chair ramp

See some helpful ideas on building a 10 foot long outdoor household wheel-chair ramp out of plywood and two by fours. This ramp provides an acceptable slope for entryways under 20 inches high. The result is a sturdy, stable ramp with 1.74 inches of rise for each foot of ramp. For detailed step by step text instructions and still pictures of this job see: http://www.originalmechanic.com/2015/02/how-to-build-ten-foot-long-outdoor.html