Discussion and Review of Tiffin Municipal Code Revisions – Preparation for Setting the Public Hearing — Memo - Code Updates

AGENDA ITEM # WS -C VII. SUDAS / Engineering Standards Chapter 158 – Statewide Urban Design and Specifications (SUDAS) One of the most significant additions during the codification process was the formal incorporation of the Statewide Urban Design and Specifications (SUDAS) into the City Code through the creation of Chapter 158 – SUDAS. The addition of SUDAS required a substantial review and incorporation of engineering, construction, infrastructure, street, sidewalk, utility, drainage, and development standards. It also required corresponding updates to other chapters of the Code where SUDAS standards are referenced. The formal addition of SUDAS significantly expanded the scope of the codification project and was the primary reason the codification process extended beyond the originally anticipated timeline. The final chapter includes standards for: • Streets. • Alleys. • Sidewalks. • Trails/bicycle facilities. • Driveways. • Culverts. • Parking lots. • Street lighting. • Utilities. • Water mains. • Fire hydrants. • Geotechnical requirements. • Stormwater/drainage. • Fencing. • Construction specifications. • Subdivision infrastructure. The chapter also establishes City-specific roadway design criteria, including right-of-way widths, pavement widths, grades, distances and pavement thickness. There are also detailed City standards for driveway construction, access permits, culverts, pavement, traffic control and pedestrian safety. Water/Sewer/Sidewalk chapters Related City standards are also being tied directly to the SUDAS standards in other Code chapters. For example: • Water service pipe installation references current SUDAS standards. • Building sewer connections reference SUDAS. • Sidewalk construction references current SUDAS standards. This gives the City one central location for its engineering/design standards rather than having those requirements scattered among multiple chapters or documents. VIII. Floodplain Regulations - Chapter 160 – Floodplain Management The floodplain chapter has been updated using the newer floodplain standards supplied by the Iowa DNR in May 2026. The June draft specifically documents that the DNR had supplied new 5