2019 Design Standards Amendments

1D-1 A. 3. Add the following paragraph: Copies of the plans submitted by the Project Engineer to the City for review by the Jurisdictional Engineer shall be full-size (24” X 36”). The minimum full-size sheet dimensions are 22”X34”. Copies of plans for bidding may be scalable half-size (11”X17). 1D-1 E. 2. Replace the second sentence with the following: The profile should show centerline and form grade/top-of-slab tangent grades, vertical curve data, and break grade data. Top-of-curb tangent grades may be used with approval of the Jurisdictional Engineer, and when used shall be noted as such. Chapter 2 Stormwater 2C-3 G. 7. Add the following section: 7. Other Jurisdictional Requirements Castings shall be non-rocking, self-sealing and meet SUDAS specifications. The words “STORM SEWER” shall be cast into the lid. Chimney seals are not required for storm sewer. Concrete spacers or metal shims shall be the only materials utilized to adjust frame elevations. Grout must be used to bond and seal frames to adjusting spacers. All manholes shall be marked with two metal fence posts to remain in place until landscaping is complete. In developments, the posts shall remain in place until landscaping has been completed by the lot owner. 2D-1 B. 2 Add the following subparagraphs: d. Drainage way easements for overland flow shall be of sufficient with to contain the 100-year flow and as a minimum shall include the bottom width and side slopes of the drainage way and any necessary overbank areas. 2D-1 D. 3. a. Change to read “12-inches in diameter.” 2D-1 D. 4. c. Add the following statement: Where velocities in a pipe greater than 15 feet per second are calculated, special provisions shall be made to protect against displacement, abrasion, or shock. 2D-1 D. 7. a. Add the following sub-paragraphs. 1. The maximum slope for storm sewer outlet lines shall be 10%. 2. If reinforced concrete pipe is utilized for outlet lines having a slope greater than or equal to 8%, all joints must be tied together. The flared end section and the last two pipe joints shall be tied together in all instances. 2D-1 D. 10. Add the following: 10. Permitted Flows: a. No sanitary sewers, sanitary sewer services, or septic tanks shall be discharged into storm sewers. b. No flows from commercial car washes shall be discharged into storm sewers. c. Sump pump discharge of ground and surface water is permitted. d. Only ground water is permitted in sump pump discharge tiles less than 12-inches in diameter. No surface water or roof drains are permitted in these systems. 2D-1 D. 11 Add the Following: 11 Outlets: All pipe outlets must extend to an existing, established drainage channel. If there are no existing channels within the property being developed, the developer shall convey the stormwater through an underground piping system to the nearest established drainage channel. 3