Don't forget Frew calcs are now in double precision. This means the persistent problem of residual bending moments below the wall should no longer occur.
Frew 3: Where have the default Kac/Kpc values gone?
Code changes for automatic calculation of earth pressure coefficients led to the default settings of Kac and Kpc being disabled for user-defined coefficients. This has been reinstated in Frew 18.1.5!
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Slope Tips & Tricks
Slope 1: How do I delete points in graphical input?
Points can be deleted by placing the cursor over the required point and clicking the left mouse button at the same time as holding down the Shift key on the keyboard.
Whole strata can be deleted by selecting the stratum and then the delete button on the graphics toolbar.
Slope 2: Reinforcement geometry limitations
If an entire embankment is entered, the user should specify whether the required slips are in the increasing or decreasing x direction. The program will not draw the reinforcement correctly because it is only specified by level and offset from the slope surface.
Embedded reinforcement can be analysed, but only if it intersects the ground surface (on a line projected from the actual location of the reinforcement) OR if the user enters the offset from the minimum x coordinate of the problem. The diagram below shows embedded reinforcement (in blue) - in versions before 18.1.5, if the level was entered as less than 0mOD, the program would not draw or analyse it.
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Safe Tips & Tricks
Safe 1: Spring data format
Data format for springs has been changed for Safe 17.9 versions from 17.8.4. Spring data is now split into Global and Run data. Global data, once entered, cannot be edited or deleted. The available springs are set to Active or Inactive in each run. The Global data cannot be edited because any results accumulated in various runs would then not be correct for the changed stiffnesses. To change spring properties, de-activate the springs you no longer want then create new springs with the new properties and activate them in the required runs.
Safe 2 : When is seepage steady state?
Checking the "Seepage analysis" box in the Global Data .. General Data dialog makes the entire problem a steady state seepage analysis ONLY. In this case, material stress-strain data is not required and you should enter permeabilities, water data and seepage restraints. One "dummy" vertical and horizontal restraint is required at a node. This is just a quirk due to the pre-analysis data checks.
Checking the "Steady state analysis" box in the Run Data .. Consolidation Data dialog makes that run only a steady state seepage run. This can be used, for example, after a number of consolidation runs.
So for time-dependent consolidation/seepage, leave both boxes blank.
Safe 3:
Safe 18.1 builds (prior to 18.1.5) were excluded from the general GEO build due to compatibility problems between the C++ and Fortran compilers. To download earlier Safe versions, scroll down to Superseded Downloads
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Tunset Tips & Tricks
Tunset 1: Inclined tunnels
Tunset takes the volume loss to be volume loss per unit horizontal length. However, the user generally inputs volume loss per unit length of tunnel which means that for inclined tunnels total volume loss, and hence settlement, are underestimated. Without modifying the Tunset code it is possible to divide the volume loss per unit length of tunnel by the angle of inclination of the tunnel to get the volume loss per unit horizontal length and input this into the program. The Tunset calculation will then be correct.
It is not possible to apply this correction to vertical shafts since the horizontal length is zero so settlements are always calculated as zero. The workaround is to make the shaft almost vertical (say 89 degrees) and apply the corrected volume loss.
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General Tips & Tricks
General 1: Navigating around long tables in table views
Use ctrl-G or move cursor to between table rows in the index column (cursor changes to double headed arrow), right-click and choose Goto.
General 2: Copying cells in tables
When editing data in a table you can enter the following operators instead of typing in values.
Copy operators
- = - to copy the value from the same cell in the preceding record.
- =n - to copy the value from the same cell in record n.
- == - to copy the values from the same cell and all following cells in the preceding record.
- ==n - to copy the values from the same cell and all following cells in record n.
The increment operators copy the value from the same cell in the preceding
record and perform an operation on that. They apply to numeric fields only.
- +=f - to add f to the copied value.
- -=f - to subtract f from the copied value.
- *=f - to multiply the copied value by f.
- /=f - to divide the copied value by f.
This functionality is available in all Oasys engineering programs, though the ‘increment operators’ are only available in recent releases.
General 3: Using Oasys engineering software on two monitors
Note that Table View combobox drop lists do not drop on the secondary monitor when running in a two monitor setup with 'Extend my Windows desktop onto this monitor' switched on. (This is a problem in the underlying proprietary code.)
General 4: Sending data by email
The ‘File | Send To’ command is a quick way of attaching your data file to an email.
General 5: Right-click menus
Lots of functionality is provided via context sensitive right-click menus.
General 6: Acrobat inverts Arup logo
Acrobat Writer v4.0 inverts the Arup logo at the top of printed output. If you upgrade to Acrobat 5.0 this problem should disappear, or try one of the freeware pdf creators available on the Internet.
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