| Applies To | |||
| Product(s): | AutoPIPE | ||
| Version(s): | all | ||
| Environment: | N/A | ||
| Area: | Static Load Case | ||
| Original Author: | Bentley Technical Support Group | ||
| Date Logged & Current Version | Dec 2014 09.06.01.10 | ||
Problem:
Can the seismic input be explained again in the new version of AutoPIPE V8i 09.06.xx.xx and higher?
Solution:
Start by selecting load> Static Earthquake.
By default there is already 1 seismic load case E1, using the mouse change the Seismic Code from User to ASCE 2010 or other selection from drop down listing,
Using the mouse, select the gray box on the left hand side of E1 to highlight the entire row, and press the Modify Selected button:
Fill in the fields as required, see online help for details on all fields.
Press OK button to enable the application to calculate the gravity factors to be applied to the model for the active load case.
Press the New button as required to add additional load cases.
Notes:
1. A maximum of ten (10) earthquake load cases can be used in a model at any one time.
2. The information in AutoPIPE was gathered from the USGS earthquake hazard maps and Data website
3. Remember any screen shots (as shown above) and training examples provided by Bentley are NOT real world models and are only used to illustrate how to use the program.
4. Bentley cannot provide specific Seismic "G" values to be used in a model. These values come from earthquake data for your location and can be given in seismic codes or provided to the project in a specification. If values are applied as User entries, it is up to an individuals engineering judgement as to how to apply them. Either all three together, separately, horizontal together and vertical separate. Also have to decide how to combine them. Typically, the vertical direction values for Static G are less that the horizontal due to the increased mass in that direction. This can be clearly seen in the values extracted from the seismic codes. As a suggestion, use 2/3rd if no vertical component is given and to combine with the two horizontal directions. This may not be relevant to all models and is an engineering decision AutoPIPE users should make.