Assignment #7: Analyze the 10-story structure of Assignment #5 under gravity, wind, and seismic loads. The analysis can be done using any structural program such as Sap, Etabs, or another program of your choice capable of performing analysis, including modal (spectral) analysis. The details of the building to be analyzed are given in Assignment #5. For wind analysis assume urban terrain. For your steel framing use the following sections. Floor Section Beams - 1st Floor 10th Floor W14x38 - 1st Floor 5th Floor W24x117 Columns - 6th Floor 10th Floor W24x76 Any information not given can be assumed for the buildings. You can assume your floor diaphragms are rigid in plane and can distribute the forces accordingly. The final deliverable results are the structural model of the building as well as a written report. The results of the project should be summarized in the report. You should perform the following tasks: 1. Perform modal analysis. Report the first 15 modal periods and modal mass participation factors. How many modes are required to describe the building response? 2. Analyze the building under the following loading scenarios. Practically, apply the relevant loads for each case and use the right load combinations: 2.1. Under gravity load combinations only 2.2. Under gravity and wind load combinations. 2.3. Under gravity and seismic load combinations. i. Using Equivalent Lateral Force procedure (ELF) ii. Using Modal Response Spectrum analysis For ELF and wind loading scenarios, apply the floor forces that you have hand calculated in Assignments #5 and #6 to your model to review the building response. For Modal Response Spectrum analysis, apply the seismic force using the Response Spectrum function of the software. For your results, include: • • . List of project information and relevant analysis information – short description. Diagram of seismic story shear and bending through the height of the building (two methods, one equivalent lateral force method, one the spectral analysis results from computer model). Comparison of story shears and overturning moment from wind and seismic forces (both ELF and Modal Response Spectrum). Use appropriate load factor per code for wind and seismic loads. Pay special attention to using load factors for wind that are consistent with the return period used for wind according to the version of ASCE 7 that you are using.) ❖ Assignment to be submitted in electronic format. ❖ Report, and models of the building to be uploaded to courseworks. ❖ Note: In lieu of reading from the maps in the code, Wind and seismic information for your location can be obtained from https://hazards.atcouncil.org/. Note that you need to pick the seismic and wind data with the right return period/corresponding to the right version of the code. Pay particular attention to using load factors that are consistent with the wind return period.