B-6 "Expansion / Isolation Joints :
a. Expansion joints shall be used where pavement abuts existing pavement and at intersections. Isolation joints shall be placed where paving abuts foundations, drainage structures, sumps or any fixed object.
b. Width of expansion joints shall be 12 mm (0.5 inch) minimum and 25 mm (1 inch) maximum unless the requirement of a larger expansion joint is demonstrated by expansion calculations of the joint. Sides of joints shall be parallel.
c. Expansion joint material shall be premolded, compressible expanded polyvinyl chloride or polyethylene. Bituminous or asphalt filler material shall not be used."