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Planter Drainage
Wilson Library

University of Minnesota

The O. Meredith Wilson Library at the University of Minnesota includes a large below-ground-level section extending out under a raised planter and courtyard area. This section of the library houses storage areas and an extended walkway connecting the library to other parts of campus. The area under the plaza was plagued by seepage. Numerous attempts to solve the problem by sealing the ceiling failed.

 

Campus maintenance engineers eventually concluded that any solution to the problem had to include a plan for evacuating excess water from the large planters. As long as these planters acted as a bathtub for irrigation and rain water, water would eventually find its way into the library.

 

 

The U was reluctant to remove the planters because of the many years invested in the mature trees growing there. Instead, lines of Multi-Flow were trenched in at approximately 10 foot intervals, circumventing the trees. The narrow trenches required by Multi-Flow made this maneuver possible. Each line terminated at the edge of the planter and emptied out onto sidewalk.

 

 

The seepage issue has been resolved and the grass in the planter has been reestablished. The University of Minnesota maintenance staff was impressed with the ease of use and the effectiveness of Multi-Flow

The Wilson Library was named in honor of Owen Meredith Wilson, who was President of the University of Minnesota from 1960 to 1967.
The U was reluctant to remove the planters during the repair because of the many years invested in the mature trees growing there.
Lines of 6-inch Multi-Flow were trenched in at 10 foot intervals, circumventing the trees.
The traffic above is not conscious of the activity below. The activities below will no longer be interrupted by conditions above.