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8 <br /> • Determine sectional properties, mass participation, effect of water(impulsive and <br /> convective)and material strengths along the height of the portal. <br /> Task 05004—Seismic Response Analysis <br /> URS will complete an elastic structural analysis to evaluate the ability of Portal 3 to withstand the <br /> specified seismic events identified in Task 05002. The following subtasks will be completed: <br /> • Complete a parametric finite element response analysis of the structure using <br /> commercially available SAP2000 software. <br /> • Evaluate the modal responses and identify the effects of the modal frequencies on the <br /> loads on and the strength of the structure. <br /> • Establish the uncracked shear and overturning capacities of the structure under the <br /> seismic loading. <br /> • If uncracked shear and overturning capacities are not adequate,complete a simplified <br /> cracked response evaluation to determine the severity of the overstressing. <br /> • Evaluate the overall sliding and overturning stability of the structure under seismic <br /> loading. <br /> Task 05005—Review Meeting <br /> At the conclusion of Task 05004,the results from all the analysis will be presented to the City in <br /> a review meeting at Everett. City comments on a draft technical memorandum and the need for <br /> Phase 05B analysis will be discussed and decisions will be made. URS attendees at the meeting <br /> will be Cecil Urlich and Sri Rajah. <br /> Task 05006—Technical Memorandum <br /> URS will prepare a technical memorandum summarizing the structural audit,analyses,results, <br /> conclusions and recommendations.Before the Task 05005 review meeting, a draft technical <br /> memorandum will be sent to the City for review. The City comments will be reflected in the final <br /> technical memorandum. <br /> PHASE 05B—CRACKED RESPONSE ANALYSIS <br /> Based on the Phase 05A findings, if a Detailed Cracked Response Analysis is considered or found <br /> to be necessary, the Phase 05B work would be completed as two tasks: <br /> • Task 05007: Cracked Response Analysis <br /> • Task 05008: Update Technical Memorandum <br /> The activities to be completed within each task are described in the following sections. <br /> Task 05007—Cracked Response Analysis <br /> URS would complete a detailed structural analysis to analyze the cracked response of the Portal 3 <br /> structure to evaluate the ability of Portal 3 structure to withstand the specified seismic events <br /> identified in Task 05002, Seismic Criteria. The following subtasks will be completed: <br /> 30 <br />