2019 Design Standards Amendments

2D-1 D. 12 Add the following: 12. Subsurface Drainage: a. In predominantly wet areas, area containing hydric soils, and other such areas designated by the City Engineer, a subsurface drainage system shall be provided to receive discharge from sump pumps. b. A 2-inch service connection manufacture specifically for the pipe being used and approved by the City Engineer shall be provided for each lot abutting the subsurface drainage system. c. The end of all sump pump services shall be marked with a metal post or #4 rebar at least 24- inches in length buried vertically to within 1-foot of the finished grade. 2D-1 D. 13 Add the following 13. Other jurisdictional Requirements: a. No Corrugated PVC pipe shall be installed within the public right-of-way or with easements shared with other utilities except for subsurface drainage pipes. b. No corrugated PVC pipe shall be used where the pipe crosses easements used by other utilities. c. Flared end sections are required at all storm sewer outlets and shall include IDOT RF-14 ties and rip-rap or other channel protection as recommended by the City Engineer 2G-1 F. 5. Add the following subsection: 5. Other Jurisdictional Requirements: Refer to City of Tiffin Ordinance 2012-313 for specific requirements. a. Dry Hydrant Installation 1.) All wet-bottom detention facilities shall have an emergency vehicle accessible dry hydrant installed. Additional information regarding installation is available at the Office of the City Engineer. All dry hydrants installation sites will be approved by the Fire Chief and construction drawings will be approved by the Fire chief and City Engineer. 2.) Figures G-1.02 and 2G-1.03 show typical installation details. 4