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This page is devoted to *frequently asked questions* (FAQ) related to [load patterns|kb:Load pattern].
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h2. How are line loads applied to membranes?
*Answer:* To apply line loads to deck-type objects, several options are available, including:
* Add these loads as distributed loads to decks, usually as small partition loads for decks without beams underneath.
* Add loads directly to supporting beams.
* Use [shell|kb:Shell]-type objects.
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*Related Incident:*
* {incident:no=47896|comment=How to apply line loads to membranes}
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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 1.2*DL+1.6*LIVE_LOC1+1.6*LIVE_LOC2 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:
* 1.2*DL + 1.6*LIVE_LOC1
* 1.2*DL + 1.6*LIVE_LOC2 |
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