
	Applies To

	Product(s):	AutoPIPE
	Version(s):	2004, XM, V8i, CONNECT;
	Environment:	N/A
	Area:	Warning message
	Original Author:	Bentley Technical Support Group
	Date Logged & Current Version	Apr. 2016 10.01.00.05

Problem:

The Following warning occurred when perform an Time History analysis

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Warning
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W177-22: Time history duration is less than first period in modal analysis
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OK
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Why and how to avoid?

Solution:

This occurred because the user was able to enter a duration time that was less than required by the analysis. The new version of AutoPIPE displays the following Warning immediately when the duration time is entered on the Time History dialog, and is more descriptive of why it is being displayed:

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Time History
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Duration must be greater than first period plus transient duration
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OK
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See the following WIKI here for an example (see Item #4, Question, what value would I enter into the Time history dialog screen for "Duration"?)

W177-22: Time history duration is less than first period in modal analysis warning in AutoPIPE

Problem:

Solution:

See Also