FAQ
In time history analysis, is it possible to specify different acceleration records for different supports?
Yes, please see Multi-support excitation page for additional information.
Is it possible to consider separate live load types?
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{info} This page is devoted to *frequently asked questions* (FAQ) related to [load patterns|kb:Load pattern]. {info} \\ {on-this-page} h2. For time-history analysis, can different ground motions be applied to individual supports? Yes, please see the [Displacement time-history record|kb:Displacement time-history record] article for details. h2. Is it possible to apply multiple live-load patterns separately? *Extended Question:* I am interested in applying various live-load patterns to determine the governing configuration. When I specify LIVE_LOC1 and LIVE_LOC2 as separate patterns, both of LIVE design type, the combination 1.2D+1.6*LIVE_LOC1+1.6*LIVE_LOC2 |
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Answer: The load pattern type is primarily used to automatically create design load combinations for the design post-processor. This enables to automatically assign appropriate load factors for the different load types.
For the case you have described, you would need to manually create the following two load combinations:
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is automatically generated. How do I apply these patterns separately? *Answer:* [Load-pattern|kb:Load pattern] design types correlate with specific design post-processing methods such that design [load combinations|kb:Load combination] are automatically created with the appropriate load factors. For the configuration described, the separate live-load patterns may be applied by manually creating load combinations as follows: * 1.2D + 1.6*LIVE_LOC1 |
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* 1.2D + 1.6*LIVE_LOC2 |