(A) In general, a street shall be completed to the grade shown on the plan and profile sheet. A plan and profile sheet for each street shall be provided by the developer and prepared by a registered professional engineer or registered land surveyor.
(B) The minimum requirements for street construction shall be in accordance with the latest edition of Standard Specifications of the Indiana Department of Transportation, in effect at the time of approval. (Hereinafter referred to as the Standard Specifications). A copy of the Standard Specifications is on file in the Office of the Town Engineer.
(1) The subgrade shall be prepared in compliance with § 207 of the Standard Specifications.
(2) The subbase, where required, shall be prepared in compliance with § 304 of the Standard Specifications. Subbase drainage in areas of cuts, swales, and fills shall be detailed in the approved plans and specifications.
(3) The street surface shall be of Portland cement concrete or hot asphaltic concrete. Portland cement concrete materials and construction shall be in compliance with § 501 of the Standard Specifications and these regulations. Hot asphaltic concrete materials and construction shall be in compliance with § 402 of the Standard Specifications and these regulations.
(C) All utility excavations under the pavement shall be backfilled with preapproved borrow or flowable mortar and construction shall conform to §§ 211 or 213 of the Standard Specifications or compacted thoroughly by other means. Any other means must be approved by the Town Engineer prior to construction.
(D) Wet spots or other unusual soil conditions may be encountered in street subgrades. These areas may require any or all of the following treatments as determined by the Town Engineer:
(1) Four-inch PVC underdrains which extend under the subbase and connect directly to the subsurface drains shall be placed at regular intervals through the wet areas;
(2) Direct aggregate ties between the subsurface drain and street aggregate subbase shall be placed in the wet area;
(3) Four inches of aggregate (#53 stone) shall be added to the street cross section in addition to the minimum base requirement;
(4) Soft spots may be over excavated and back filled with compacted aggregate; or
(5) Use of filter fabric or lime stabilization may be used. Use of either of these methods shall not imply an approval of a reduction of the required street cross section.
(E) The actual design for street construction shall be based upon estimated traffic loading with an adequate growth factor included even though the minimum requirements may be exceeded.
(F) The cross sections of streets are to be designed according to AASHTO standards using a combination of soil support values, total equivalent 18-kip single axle loads, terminal service ability index, and regional factors. The Town Engineer's Office will have the typical pavement cross sections included in the Standard Specifications.
(Ord. passed 10-11-2004)