6.3. SR 08-13-2012 - Laserfiche WebLink

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Re: Elk River Skating Facility — 2012 Preliminary Structural Report Dear Rich, Per your direction Lindau Companies, Inc. visited the "Barn" ice skating facility on April 12, 2012 to visually review the condition of the roof structure over the west ice rink and accompany American Engineering and Testing (AET) while they determined the thickness of useable steel in various structural members. Lindau Companies, Inc previously visited the facility in February 2009 and performed a visual review of many of the same steel members that are now being tested by AET. At that time material thickness testing was not performed. Although a final report will be issued at a later date this letter presents our preliminary findings and recommendations. It is possible that construction documents will be required for moving forward with our recommendations. Our review, observations, and opinions relate solely to the building structure and not to non - structural items such as architecture, egress, mechanical and plumbing systems, or environmental considerations. In the case that we note non - structural issues within this letter it is for the sole purpose of noting the need for the review of these items by a professional trained in that discipline. Investigation: The building complex consists of several interconnected structures. Our investigation was limited to the roof of the pre- engineered metal building making up the west half of the facility. Building structure in this area appeared to consist of a metal roof decking supported by steel roof purlins and steel girder frames called bents. Almost the entire roof structure was finished with foam insulation and a light fibrous material that could be sound insulation, fireproofing or both. In February 2009 several steel structural members were found to be covered with surface rust. This corrosion was not significant at that time and we believed that the rate of corrosion would be reduced if the environment within the facility was controlled. We also suggested that any exposed steel be painted, to reduce the threat of increased localized corrosion, and regular inspections performed to develop a historical perspective and greater understanding of the issue. LINDAU COMPANIES, INC. / G G April 17, 2012 PROFESSIONAL ENGINEERS 1074 OLD Hwy 35 HUDSON, W1 54016 Rich Czech (715) 386 -4444 OFFICE (715)386- 1441FAX Arena Manager 1000 School Street Elk River, MN 55330 Re: Elk River Skating Facility — 2012 Preliminary Structural Report Dear Rich, Per your direction Lindau Companies, Inc. visited the "Barn" ice skating facility on April 12, 2012 to visually review the condition of the roof structure over the west ice rink and accompany American Engineering and Testing (AET) while they determined the thickness of useable steel in various structural members. Lindau Companies, Inc previously visited the facility in February 2009 and performed a visual review of many of the same steel members that are now being tested by AET. At that time material thickness testing was not performed. Although a final report will be issued at a later date this letter presents our preliminary findings and recommendations. It is possible that construction documents will be required for moving forward with our recommendations. Our review, observations, and opinions relate solely to the building structure and not to non - structural items such as architecture, egress, mechanical and plumbing systems, or environmental considerations. In the case that we note non - structural issues within this letter it is for the sole purpose of noting the need for the review of these items by a professional trained in that discipline. Investigation: The building complex consists of several interconnected structures. Our investigation was limited to the roof of the pre- engineered metal building making up the west half of the facility. Building structure in this area appeared to consist of a metal roof decking supported by steel roof purlins and steel girder frames called bents. Almost the entire roof structure was finished with foam insulation and a light fibrous material that could be sound insulation, fireproofing or both. In February 2009 several steel structural members were found to be covered with surface rust. This corrosion was not significant at that time and we believed that the rate of corrosion would be reduced if the environment within the facility was controlled. We also suggested that any exposed steel be painted, to reduce the threat of increased localized corrosion, and regular inspections performed to develop a historical perspective and greater understanding of the issue.