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STRUCTURAL <br /> ENGINEERS <br /> Engineers Northwest Inc.,RS. <br /> a. Plans and elevations showing area, line, and joint load assignments. The documentation shall <br /> show variable loading and spatial distribution of loads as occurs. The type, magnitude, and <br /> units of the loads shall be specified. Input data for live load reductions per IBC Section <br /> 1607.10 shall be included when considered in the design. <br /> Response: Please see attached calculation and diagram of the model with each <br /> specific loading including dead and live load from the stair. <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 Section <br /> 12.4.2.2, shall be included as required. <br /> Response: All Load combination has been added including vertical effects. <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 /> Response: Please see attached load combinations with rho included. <br /> d. The load combinations shall include orthogonal loading per ASCE 7-10 Section 12.5.4. <br /> Response: The orthogonal loading has been included in the load combination. <br /> e. Input data files for automatically-generated ELFP load cases per ASCE 7-10 Section 12.8 and <br /> vertical distribution per ASCE 7-10 Section 12.8.3. Data shall include input for accidental <br /> torsion including amplification per ASCE 7-10 Sections 12.8.4.2 and 12.8.4.3, respectively. <br /> Response: Please see attached calculation. <br /> f. Analysis showing calculation of the torsion amplification factor per ASCE 7-10 Section 12.8.4.3. <br /> Scaling factors should match ELFP load case input files. <br /> Response: Please see attached calculation. <br /> g. Calculated seismic base shears. <br /> Response: Please see attached table showing column reactions. Also, 3D view <br /> showing critical base shear and uplift force has been attached. <br /> 13.The structural calculations state that the dead load consists of the platform self-weight and the <br /> "unit weight". The construction drawings and structural calculations do not specify the permanent <br /> non-structural weight supported by the platform, nor do the calculations provide a weight estimate <br /> or total seismic weight. Documentation substantiating the seismic weight shall be submitted for <br /> review. If the weight is not evenly-distributed, the distribution shall be shown. Note that an <br /> uneven distribution may require revisions to the structural design and additional requirements. See <br /> IBC Sections 1604.1 and 1613.1, and ASCE 7-10 Sections 12.7.2 and 12.7.3. <br /> Response: Please see attached 3D rendering which shows locations and type of units. <br /> The list of unit weight on the platform has been attached. <br /> 9725 Third Avenue NE•Seattle,WA 98115 <br /> 206.525.7560.fax 206.522.6698 <br /> www.-. eersnw.com <br />