05-09-2022 Council Packet - Laserfiche WebLink

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1720 Bohns Point Road, Wayzata, Minnesota April 25, 2022 Page | 2 grade. In order to establish proper frost protection of the footings and structural stability of the wall, several feet of fill will need to be added at the front of the wall, and/or the wall will need to be underpinned with helical piers or a similar method. 6. The footing of the wall has been exposed and undermined from wildlife burrowing activity. See Item 5 above for recommended repairs. 7. Refer to the attached photos for additional notes and observations. OPTIONS FOR REPLACEMENT 1. For this location, a rock/boulder wall similar to the newer wall at the north end of the failing wall could be considered. Alternatively, a segmental block (i.e. Versa-Lok, Anchor) retaining wall could be designed and installed. These types of walls do not require frost-depth footings. They are constructed on aggregate leveling pads 1 to 2 feet below grade. Figure 1: Existing, nearby stone retaining wall 2. Replacing the wall with a similar CMU wall would require construction of a concrete footing at least 42-inches below grade. The front-to-back width of the footing could exceed 6-feet. Generally, these types of walls will disturb more area than rock or segmental block walls discussed in Item 1 above. DESCRIPTION OF TERMS Terms used in this report to describe the condition of observable components and systems are listed and defined below. It should be noted that a term applied to an overall system does not preclude that a part or a section of the system or component may be in different condition: Excellent- Component or system is in “as new” condition, requiring no rehabilitation, and should perform in full accordance with expected performance. Good- Component or system is sound and performing its function. Although it may show signs of normal wear and tear, some minor rehabilitation work may be required. Fair- Component or system falls into one or more of the following categories: a) Evidence of previous repairs not in compliance with commonly accepted standards, b) Workmanship not in compliance with commonly accepted standards, c) Component or system is obsolete, d) Component or system approaching end of expected performance. Repair or replacement is required to prevent further deterioration or to prolong expected life. Poor- Component or system has either failed or cannot be relied upon to continue performing its original function as a result of having exceeded its expected performance, excessive