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ti <br /> Ms. Nadia Azarova <br /> Craft Architects <br /> Plan Check Number: B1810-016, First Review <br /> November 30, 2018 <br /> c. Calculations substantiating the stairway design shall be submitted for review, including <br /> but not limited to stairway framing, mezzanine framing supporting the stairway, and the <br /> connections. See IBC Section 1604.1. <br /> Lateral System: <br /> 12.The lateral analysis has been performed using a finite element model (FEM). The structural <br /> calculations indicate the Equivalent Lateral Force Procedure (ELFP) of ASCE 7-10 Section <br /> 12.8. See IBC 1613.1 and ASCE 7-10 Section 12.7.3. The following documentation should <br /> be submitted for review: <br /> a. Plans and elevations showing area, line, and joint load assignments. The documentation <br /> shall show variable loading and spatial distribution of loads as occurs. The type, <br /> magnitude, and units of the loads shall be specified. Input data for live load reductions <br /> per IBC Section 1607.10 shall be included when considered in the design. <br /> b. Load cases and combinations definitions. See IBC Section 1605. The seismic load <br /> combinations of ASCE 7-10 Sections 12.4.2.3 and 12.4.3.2, including vertical effects per <br /> Section 12.4.2.2, shall be included as required. <br /> c. The load combinations shall include a redundancy factor of p=1.3 per ASCE 7-10 Section <br /> 12.3.4.2 <br /> d. The load combinations shall include orthogonal loading per ASCE 7-10 Section 12.5.4. <br /> e. Input data files for automatically-generated ELFP load cases per ASCE 7-10 Section 12.8 <br /> and vertical distribution per ASCE 7-10 Section 12.8.3. Data shall include input for <br /> accidental torsion including amplification per ASCE 7-10 Sections 12.8.4.2 and 12.8.4.3, <br /> respectively. <br /> f. Analysis showing calculation of the torsion amplification factor per ASCE 7-10 Section <br /> 12.8.4.3. Scaling factors should match ELFP load case input files. <br /> g. Calculated seismic base shears. <br /> 13.The structural calculations state that the dead load consists of the platform self-weight and <br /> the"unit weight". The construction drawings and structural calculations do not specify the <br /> permanent non-structural weight supported by the platform, nor do the calculations provide <br /> a weight estimate or total seismic weight. Documentation substantiating the seismic weight <br /> shall be submitted for review. If the weight is not evenly-distributed, the distribution shall <br /> be shown. Note that an uneven distribution may require revisions to the structural design <br /> and additional requirements. See IBC Sections 1604.1 and 1613.1, and ASCE 7-10 Sections <br /> 12.7.2 and 12.7.3. <br /> 14.The structural calculations include the isometric view of the FEM used to perform the <br /> design. The FEM does not include the dead live loads on the platform from the stairways. <br /> The FEM shall be revised and the structural design re-evaluated. The structural drawings <br /> shall be revised as needed. See IBC Sections 1604.4 and 1613.1, and ASCE 7-10 Section <br /> 12.7.3. <br /> O3200 Cedar Street everettpw@everettwa.gov <br /> Everett,WA 98201 O425.257.8800 425.257.8882 fax O everettwa.gov <br /> l.� <br />