In general, parking space requirements for the disabled must be provided as shown in the following table, except as follows: Outpatient units and facilities shall provide 10 percent of the total parking spaces as accessible Units and facilities specializing in treatment or services for persons with mobility impairments shall provide 20 percent of the total parking spaces as accessible In parking structures, one in every eight accessible spaces, but not less than one, shall be designated "van accessible" with a minimum vertical clearance of 98 inches Total Parking Spots in LotRequired Number of Accessible Spaces Up to 251 26 to 502 51 to 753 76 to 1004 101 to 1505 151 to 2006 201 to 3007 301 to 4008 401 to 5009 501 to 10002 percent of total over 10002 percent plus 1 for each 100 over 1000