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HomeMy WebLinkAboutPermit Correspondence 1990-5-22 . .;10 ','~ DEVELOPMENT SERVICES PUBLIC WORKS METROPOLITAN WASTEWATER MANAGEMENT 225 FIFTH STREET SPRINGFIELD, OR 97477 (503) 726.3753 May 22, 1990 Mr. Gordon Rogers 1785 Harbor Drive Springfield, Oregon 09477 Dear Mr. Rogers I have reviewed the engineering analysis for the Sunrise Fiberglas building which you submitted to this office. The analysis was prepared by Edward A. Wiltsie, a registered engineer with the State of washington. The building involved is a fiberglass structure located at the above address which did not appear to meet the minimum state of oregon structural Specialty Code requirements for snow and wind loading. , The analysis selected a "fixed base" condition as the basis for design calculations. This condition included a treated timber sill to be molded into the base of the building, and an increase in the depth of the 1" ribs to 2" at the slab by tapering the ribs in the bottom 28" of the side walls. The analysis indicates this design together with a slight thickening of the fiberglass skin at the top section of the building would aequately support the required loads. The structure located upon your property does not conform to the analysis which you submitted. An alternate base condition was fabricated into the structure by the use of 3" square vertical stiffeners randomly spaced at 32-60" intervals in the lower 28" of the walls instead of the tapered thickening of the ribs, Also, the required molded-in timber sill, which appears to be necessary for the fixed base condition, is missing at the bottom of the side walls, There is no substantiating documentation in the data which was submitted that supports the revised fabrication. Based upon the information submitted to this office, the building which is located on your propertyldoes not appear to meet applicable building code requirements for snow and wind loading conditions as required by the State of oregon. Subsequently, the structure cannot be approved by this office as complying with Code requirements until proper data reflecting the actual building design is submitted. Sincerely, /~tftU- Donald Moore Construction Representative cc. Dave puent, Building Official Tom Marx, structural Inspector I;