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Site Considerations

From our site visit and erosion, slope stability, and revetment analyses it became obvious that several additions needs to be made to the site. Throughout most of the site there is a retaining wall to prevent erosion along the crest of the slope. However, on the east edge of the site this retaining wall is deteriorating and needs to be replaced. The toe of the slope is in good condition where the retaining wall is holding, leading to minimal work needing to be done to develop a stable slope on the toe. Erosion is evident near the shore, with gravel from the toe being washed into Lake Mendota. To prevent this erosion additional revetment will need to be added.

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Additional retaining walls will be needed on the east side of the site to prevent erosion that will lead to slope stability issues. A terraced retaining wall, rather than the single retaining wall in place on the central and west portions of the site, is an option that will provide maximum slope stability. A terraced retaining wall system will also give additional usable land on the slope.

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Revetment will need to be added on the shoreline to prevent erosion that is leading to an unstable slope. They revetment design process, laid out in the approach section, calls for significant additions to the current deteriorating revetment on the site. Additional considerations for ice and storms from the Northwest have been taken into account during the revetment analyses, ensure that a resilient revetment design is chosen. Some revetment designs, such as implementing a pocket beach or natural shoreline, have been considered to increase fish habitat along the shore.

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The members of the Chi Psi Fraternity have also invited the inclusion of a council ring along the shore. This council ring will give room for recreation along the shoreline and will give a place for socializing and relaxation. Additional space needs to be given at the toe of the slope for the council ring.

Council Ring

Council Ring

Terraced Retaining Wall

Terraced Retaining Wall

Revetment Example

Revetment Example

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