General requirements. Curb shall be constructed along both sides of every street within a development. Any existing pavements damaged by curb construction shall be repaired to the standards herein and/or as shown on the approved subdivision or site plan. Where one side of the development boundary is along an existing street, the curb shall be constructed only on the development side. Curbs shall be constructed of Class B concrete, air-entrained, in accordance with the requirements of the Standard Specifications. Preformed bituminous cellular-type joint filler, 1/2 inch thick, cut to match the cross section of the curb, shall be used at all expansion joints at intervals not greater than 20 feet. Intermediate plate joints shall be provided at intervals not exceeding 10 feet. At places where a concrete curb abuts portland cement concrete pavement, joints in the curb shall be placed to match the paving joints, and intermediate joints shall be placed so as to create equal curb panels not longer than 20 feet. When concrete curb and gutter is required, the gutter shall be eight inches thick and shall be constructed of Class B air-entrained concrete. Joints in the gutter shall be formed simultaneously with joints in the curb. Curb cross sections shall be as shown on the figures listed below. The requirements of the Standard Specifications regarding curing precautions must be strictly observed.