11.5 Special Rules for Cement Concrete Roadways – Any excavation
11.5 Special Rules for Cement Concrete Roadways – Any excavation in a cement concrete Public Way or Public Way with a cement concrete base with a bituminous concrete surface shall be backfilled as described in paragraph 2 and Temporarily Patched as described in paragraph 3. Immediately prior to the installation of a Permanent Patch, the following shall be done: (a) the Temporary Patch and sufficient back-filled material shall be removed. (b) a six-inch reinforced concrete slab shall be Laid over the back- filled trench extending one (1) foot beyond all edges of the trench surface and allowing for four (4) inches of bituminous concrete to be installed above the slab. The slab shall have steel reinforcing for tensile strength in accordance with good engineering practices. The Permit Holder or Contractor shall install a temporary heavy duty steel place adequate to carry heavy traffic over the trench until the concrete slab shall, have adequately cured. (c) once the concrete slab shall have cured, there shall be installed four (4) inch layer of bituminous concrete applied in a two and one-half inch base course and a one and one-half inch top course all in accordance with Diagram 3 and generally in accordance with this By-Law.