(4-traders.com) LOS ANGELES, March 22, 2017 /PRNewswire/ -- A recent independent study of seven rubber wheelchair ramps from leading manufacturers, conducted by Sotter Engineering Corporation, revealed that only two of the seven ramps met the Americans with Disabilities Act (ADA) minimum requirements for slope and grade. Standards used in the study were...http://www.4-traders.com/news/Wheelchair-Ramp-Study-Reveals-71-of-Tested-Ramps-Do-Not-Meet-ADA-Requirements--24084525/
