(A) Design thickness shall be:
Collector | Two lifts of one-and-one-half- inch thickness of bituminous concrete surface course; plus sufficient base course consisting of aggregate, bituminous aggregate mixture, or bituminous concrete binder to yield a minimum composite pavement structural number of 2.5 |
Commercial and Industrial, including alleys | Two lifts of one-and-three- quarters-inch thickness of bituminous concrete surface course; plus sufficient base course consisting of aggregate, bituminous aggregate mixture, or bituminous concrete binder to yield a minimum composite pavement structural number of 3.5. The pavement design and thickness shall be established utilizing IDOT design methods. |
Local residential and cul-de-sacs; multiple-family residential alleys | Two lifts of one-and-one-half- inch thickness of bituminous concrete surface course; plus sufficient base course consisting of aggregate, bituminous aggregate mixture, or bituminous concrete binder to yield a minimum composite pavement structural number of 2.25 |
(B) All pavement designs shall be authorized by the Village Engineer. The subdivider’s engineer shall provide pavement design calculations to verify compliance with design thickness requirements.
(C) The bituminous concrete binder course shall be Mixture B, Type 1 or 2, or as recommended by the Village Engineer for a specific pavement design.
(D) The bituminous concrete surface course shall be Mixture D, Class 1, Type 1, or as recommended by the Village Engineer.
(E) Bituminous materials must be produced at an IDOT approved plant.
(F) An IDOT-approved mix design specifications sheet must be provided to and authorized by the Village Engineer prior to use of the bituminous concrete mixture for pavement construction.
(G) Aggregate base course shall be crushed stone and shall be Type B. Aggregate base course shall be placed in lifts not exceeding five inches. Base course aggregate shall be treated with a bituminous prime coat prior to the application of the bituminous concrete surface course or binder course.
(H) All pavement base courses, binder courses, and surface courses shall be field tested for proper compaction. Tests shall be at the rate of two per lane per 500 feet. Bituminous concrete binder and surface courses shall have a minimum in-place density of 93%; with no individual test below 92%. Aggregate base courses shall have a minimum in-place density of 95%, with no individual tests below 95%.
(Ord. 97-7, passed 7-1-1997, § 5.14.8)