Laserfiche WebLink
* Commercial Refrigeration Systems will be the refrigeration system and rink <br />floor pi " g installer. Commercial refrigeration recently completed the <br />installation of the ammonia operated . ice systems at the Hibbing and <br />Chisholm ice arenas and has installed over 15 ice rink refrigeration systems <br />since 1982. <br />* The rink floor piping system will be supplied by Fransta Isteknik from <br />Sweden. Fransta has developed a fusion welded polyethylene piping system <br />which has been used in over 40 ice sheets designed for Bandy and. Speed <br />Skating similar to this installation. A design and installation representative <br />from Fransta will be on site throughout the piping installation to ensure <br />that the piping is installed to their proven standards. <br />Jesco Concrete and Masonry Contractors will be- the installer of all of the <br />rink floor concrete. Jesco has an excellent reputation in the industry and <br />has poured and finished approximately 75 ice rink slabs. <br />Alternate Bids 1 -4 were considered in the evaluation process but are not recommended for the <br />following reasons: <br />Alternate No. 1 <br />This alternate calls for 4 inches of subfloor insulation in lieu of the 3 inches specified. Four <br />inches of insulation is required only if the operating season of the ice sheet is to be lengthened <br />more than two weeks beyond the four month design condition. It is our understanding that an <br />extension of the ice season � <br />beyond this requirement will not be needed. Based on this <br />y <br />information we do net recommend acceptance of this alternate. <br />Alternate No. <br />An additional 90 tons of refrigeration capacity was included with this alternate to enhance <br />system performance during unseasonable warn weather during the design period and allow for <br />a two to three weep extension of the ice season. "ibis additional 90 tons of refrigeration <br />capacity was included in the base bid of the Shingobee group so no further consideration is <br />required. <br />Alternate No, 3 <br />This alternate modified the project warranty from one year to two years. The most critical <br />project component which is vulnerable to service or repair is the compressors. The Vilter <br />Compressors which are proposed for the Shingobee group carry a two ) year warranty which <br />would cover two seasons of operation. In addition, the prefabricated polyethylene pipe headers <br />ca a two ear warran against leakage. When combining these manufacturer's warranties <br />With the excellent qualifications of the installing contractors, we feel the two year project <br />warranty has diminish ed returns and is not necessary. <br />Page 3. <br />425 o. cor <br />