Trending Seismic Design Discussions

Which natural frequencies to consider in a modal analysis ?‎

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How can we improve our structural design in frequency domain? What are the frequencies of the earthquake we have to consider during seismic design? ‎

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I dont have a cumulative mass fraction that exceed the 90% of the total mass, in Modal analysis, what shall I do ?‎

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What are the precautions needed to build a safe structure in a seismic situation ?‎

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I have just a few modal mass fraction that exceed the 5% of the total mass, in Modal analysis, how much cases I need to consider ?‎

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What is the preferable character of a structure against seismic solicitations, rigid or flexible? why ?‎

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What is the interval of the acceptable natural frequencies of a structure in a seismic situation ?‎

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What is the idea of capacity design ? is it always the optimal solution ?‎

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Which tool is better to carryout Nonlinear Static Pushover Analysis of frame structures, STAAD Pro or SAP2000?‎

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Can we begin the shear wall from the ground flour and not extend it to the foundation ?‎

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