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. <br /> 1� <br /> � <br /> MElVIO <br /> Date: November 30, 2000 <br /> To: Chairperson Porter <br /> Parks and Recreation Members <br /> From: Jili Lien <br /> Re: Concrete and Asphalt Proposals for Skate Park <br /> Included in your packet are copies from three different vendors for both concrete and asphalt. ' <br /> On each bid, you will see a quote for the minimum pad size required for a ska.te park (60'x110') <br /> and a quote for the size of the hockey rink (83'x196'). <br /> I have spoken to both Tom Peterson (Engineer) and Gerald Sabol (SunRamp Solutions) and have <br /> broken down some of the pros and cons of concrete vs. asphalt as follows: <br /> i <br /> Concrete Asphalt ' <br /> Four inch base Four inch base <br /> Four mch concrete Three inch asphalt <br /> Requires dirt border (flooding) Requires dirt border (flooding) <br /> Requires grade for dra.inage Requires grade for drainage <br /> More accurate grade Works sufficiently <br /> Stronger / more durable Melting fa.ctor (ice will melt faster) <br /> Easier to flood Requires w}ute paint on surface ' <br /> Less maintenance Pot holes I <br /> Nicer appearance <br /> Wire mesh reinforcement <br /> In my conversations with Mr. Sabol (SunRamp Solutions) I questioned the "boots" and their <br /> performance. More specifically, if it will effect or slow down the ground speed. Mr. Sabol <br /> expla.ined that they have two years research on the "boots" alone, and that there is "NO" change <br /> to the ground speed. In fact, the material used for the boots is a harder form of polyurethane <br /> tha.n that which is used for the wheels on skateboards. <br /> Mr. Sabol also expla.ined that 80% of kids cannot use the "big" ramps (half pipes) because they <br /> are too large for them. The age group tha.t uses hatf pipes run between 18 - 23. Respectively, <br /> only 20% of kids can use the Tier II ramps (too big). Mr. Sabol re-iterated the following list of <br /> attributes for the sunramps: they are non-traditional, e�rtremely tough equipment/ramps, <br /> moveable/stacka.ble, weather resistant, and no screws. They aze currently developing two new <br /> ra.mps; the Quarter Pipe and the Spine (two quarter pipes back to back). The University of <br /> Duluth is 2% owner of SunRamp Solutions. <br /> Thank you! <br /> I <br />