Accessible Parking Space Count (2010 ADA Standards 208.2)
Two rules, and the second is the one that gets skipped. Table 208.2 sets the accessible count from the lot total; 208.2.4 then requires one VAN space for every six OR FRACTION OF SIX of those -- so 100 spaces owe 4 accessible, and those 4 still owe 1 van. Seven owe two. Above 500 the table stops being a lookup: 501 to 1,000 is 2% of the total, so a 500-space lot owes 9 and a 501-space lot owes 11 -- one space added adds two. Over 1,000 it is 20 plus one per 100 or fraction. And the table applies PER PARKING FACILITY, not per site: four separate lots of 26 owe 8 accessible spaces where the same 104 in one lot would owe 5, so splitting the parking raises the requirement.
Formula and source
Table 208.2 by lot total: 1-25 -> 1; 26-50 -> 2; 51-75 -> 3; 76-100 -> 4; 101-150 -> 5; 151-200 -> 6; 201-300 -> 7; 301-400 -> 8; 401-500 -> 9; 501-1,000 -> 2% of the total; 1,001 and over -> 20 plus 1 for each 100 or fraction thereof over 1,000. Van spaces = ceil(required accessible / 6) per 208.2.4. The table is applied to each parking facility separately.
2010 ADA Standards for Accessible Design, 208.2, Table 208.2, and 208.2.4. A US federal standard in the public domain, quoted directly.
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