11-12-2015 - Laserfiche WebLink

FINAL – FMDA Detention Funding Policy 9 SECTION VII – Final Design Technical Criteria for Dams and Impoundments The following summarizes technical requirements for eligibility for FMDA funding. The Final Design Report summarizing how the following considerations are met before FMDA funds can be used for project construction.  Engineering Design: Structural and hydraulic design of all dams and impoundments considered for FMDA funding must be performed by a registered professional engineer of the State of Minnesota and/or North Dakota, depending on project location.  Hydrologic and Hydraulic Adequacy: Dams and impoundments considered for FMDA funding must be sized in accordance the appropriate governing Dam Safety Rules for Minnesota or North Dakota, depending on the location of the proposed project location. These factors include, but are not limited to, the following: o Appropriate determination of Dam Safety Classification. o Appropriate capacity principal spillway and emergency spillway components based on Dam Safety Classification. o Appropriate capacity principal spillway and emergency spillway components based on Dam Safety Classification. o Ability of the proposed dam or impoundment to provide sufficient freeboard before overtopping based on Dam Safety Classification. o Erosion protection for dam or impoundment earthen embankments and spillways. o Adequate measures to control downstream channel erosion. o Considerations for sediment yield over the project life. o Site drawdown procedures for projects featuring gated storage.  Structural Stability: The structural design of the proposed dams or impoundments must consider the following: o Gravity forces; Hydrostatic pressure; Uplift forces; Overturning moment; Resistance to sliding; Ice pressures; Earthquake forces; Slope stability including consolidation and pore pressures; Seepage collection or prevention; Foundation conditions including appropriate borings and determination of the strength of foundation materials; Specifications for materials of construction and their placement or installation; Adequate construction inspection to assure conformance with design assumptions; and Adequacy of the cofferdam, if any. In addition to items listed above, the FMDA reserves the right to request additional information from the Project Sponsor for any other technical considerations relevant to the project.