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1 <br /> November 19, 2007 <br /> G-PN 1 A-WRL-07-114 <br /> Page 3 <br /> Given the above, we respectfully request that the City of Everett allow Boeing to <br /> use the 2003 International Existing Building Code (IEBC) for the structural <br /> design portions of the subject building alterations. Chapter 3 of the IEBC <br /> classifies the replacement of the crane equipment as a Level 1 alteration. <br /> Section 507.1, Replacement of roofing or equipment, requires that where <br /> replacement of roofing or equipment results in additional dead loads, structural <br /> BOE/NG components (existing and new) supporting such re-roofing or equipment shall <br /> comply with the vertical load requirements of the IBC. CP&A will make a <br /> complete vertical load analysis of the building structure for the increased crane <br /> equipment weight and load rating in accordance with the vertical load <br /> requirements of the IBC. CP&A will then check existing elements and design <br /> new elements as needed so that the altered structure is in compliance with the <br /> vertical load requirements of the IBC. The IEBC has no requirement to "prove" <br /> that the lateral force resisting system is not significantly affected for this level of <br /> alteration. It is our opinion that the IEBC is a better "fit" for this type of <br /> alteration, and will maintain the safety of the building in accordance with the <br /> intent of the IBC. <br /> We appreciate your consideration of this request, and we look forward to your <br /> earliest response. If you have any questions or wish to discuss this further, <br /> please call me at any time. <br /> Sincerely, <br /> Warren R. Lance <br /> Manager <br /> Everett Site Services <br /> Electrical Engineering <br /> 425-238-4864 <br /> 33 <br />