Table 7.12 – Galley Kitchen Clearances
Current Guidelines:  
4.34.6  Kitchens.  Accessible or adaptable kitchens and their components shall be on an accessible route and shall comply with the requirements of 4.34.6.

4.34.6.1  Clearance.  Clearances between all opposing base cabinets, counter tops, appliances, or walls shall be 40 in (1015 mm) minimum, except in U-shaped kitchens, where such clearance shall be 60 in (1525 mm) minimum.

Final Revised Guidelines:  
804.2  Clearance.  Where a pass through kitchen is provided, clearances shall comply with 804.2.1.  Where a U-shaped kitchen is provided, clearances shall comply with 804.2.2.
Exception:  Spaces that do not provide a cooktop or conventional range shall not be required to comply with 804.2.

804.2.1  Pass Through Kitchen.  In pass through kitchens where counters, appliances or cabinets are on two opposing sides, or where counters, appliances or cabinets are opposite a parallel wall, clearance between all opposing base cabinets, counter tops, appliances, or walls within kitchen work areas shall be 40 inches (1015 mm) minimum.  Pass through kitchens shall have two entries.

804.2.2  U-Shaped.  In U-shaped kitchens enclosed on three contiguous sides, clearance between all opposing base cabinets, counter tops, appliances, or walls within kitchen work areas shall be 60 inches (1525 mm) minimum.

Model Codes & Standards
ICC/ANSI A 117.1-1998:  Sections 804.2.1, 1002.12.1.,1 and 1002.12.1.2  have similar requirements for kitchen clearances.