Laserfiche WebLink
NAC <br />ARC ITECTURE <br />5. For the lateral force resisting model of the braced frames, it appears that a semi -rigid <br />diaphragm is being used for distributing load to the frames. The ETABS output provided does <br />not appear to provide this, please clarify what diaphragm stiffness modification factors, if any <br />were used. See supplementary calculation pages SC-2 to SC-6 for diaphragm stiffness <br />modification factors used in the Etabs model. <br />6. Please provide a plan layout for the braced frames indicating the load distribution to each frame <br />for the governing load cases in each direction. A list of ETABS output does not provide enough <br />information to indicate load distribution and behavior of thestructure. See supplementary <br />calculation pages SC-7 to SC-8 for plans showing the load distribution to each braced frame in <br />each direction from the Etabs model. <br />We trust that these responses adequately address the issues identified in the correction notice. We have <br />enclosed supplemental calculations for review and approval. We are submitting two replacement sets of <br />drawings which contain the referenced new/updated drawing information. Please contact us if you have any <br />questions or desire further clarification. <br />Sincerely, <br />Mark G f rd, AIA <br />Associate Principal <br />cc: Steven Krause, Everett Public Schools <br />enc: Supplementary structural calculations <br />n:\121-16027\04_regulatory\b_building\bui Idi ngpermitreview\b 1711-002-003-resubmittalltr.docx <br />i./ <br />>2025 First Avenue, Suite 300, Seattle, WA 98121-3131 <br />206 441 4522 / nacarchitecture.com <br />Seattle / Spokane / Los Angeles <br />