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MEMO <br />TO: Joel Hanson, Dave Harris <br />FROM: Angela Popenhagen <br />RE: Dianna Lane Retaining Walls <br />FILE NO: 372 -Gen <br />DATE: January 9, 1995 <br />We have further studied details of the retaining wall option. There is no code requiring a <br />fence at the top of the retaining wall, but rather the liability the city wants to undertake. <br />Some alternatives to mitigate the liability are constructing a fence at the top of the retaining <br />wall, establishing a row of plantings at the top of the retaining wall, or terracing the <br />retaining wall to minimize each wall section to 4 feet in height. If the construction of a <br />fence is preferred, you may want the aesthetics of the fence to be reviewed by the landscape <br />architect for an opinion on the type of fence. The coat of construction for a chain link <br />fence is estimated at $8 -$10 /foot You would need approximately 200 feet of fence, <br />therefore the construction cost would be 31,600 to 32,000. Another possibility is establishing <br />a row of planting at the top of the retaining wall to act like a natural barrier. Plantings such <br />as sumac would be appropriate and also would be aesthetically pleasing. Terracing the <br />retaining wail to minimize each wall section to 4 feet in height would reduce the likelihood <br />of injury. The option, though, may make it easier for children to climb and is more <br />expensive than a straight wall. <br />These are a few ideas regarding the safety of the retaining wall. Please call if you have any <br />comments or questions. Thank you. <br />20'd <br />'QSSd s O0711. ePage 124 TT£T s£s are <br />8b:0T S66T -60 -T0 <br />