Oasys Slope Change Log

Contents

• Slope 21.0 Build 34 (released 16 July 2021)
  • New Features
  • Fixes
• Slope 19.1 Build 1 (released 8 April 2015)
  • New Features
  • Fixes
• Slope 19.0 SP3 Build 26 (released 25 July 2014)
  • New Features
  • Fixes
• Slope 18.2 Build 2 (released 22 Jan 2009)
  • New Features
  • Fixes
• Slope 18.2 Build 1 (released 3 May 2007)
  • New Features
  • Fixes
• Geo 18.1 Build 5 (released 22 May 2006)
  • New Features
  • Fixes
• Outstanding Bugs

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Slope 21.0: New Features

• Ribbon interface - The program introduces a new user interface with a ribbon menu and windows which can be docked, floated on screen or minimised to the edge of the screen.
• Seepage analysis - Pore pressures can be generated using groundwater boundary conditions specified on the mesh boundary lines.
• Morgenstern-Price method.
• Ability to define polylines, and generate strata from polylines.
• Optimization of non-circular slip surfaces.

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Slope 21.0: Fixes

• GE-2490 Fixed issue name of reinforcement not being saved properly.
  Fixed 2 April 2025, released in Slope 21.0 Build 57.
• GE-2482 Fixed issue in user defined reinforcement partial factors.
  Fixed 31 March 2025, released in Slope 21.0 Build 57.
• GE-2453 Fixed COM issue.
  Fixed 25 March 2025, released in Slope 21.0 Build 57.
• GE-2390 Ensure labels in graphical output for soil properties etc. are retained even if results are deleted..
  Fixed 5 February 2025, released in Slope 21.0 Build 56.
• GE-2422 Restrict Bishop's Method for non-circular slips.
  Fixed 4 February 2025, released in Slope 21.0 Build 56.
• GE-2391 'Print Preview' in the ribbon and its context menu are missing in Slope.
  Fixed 3 February 2025, released in Slope 21.0 Build 56.
• GE-2312 Non circular slip file is crashing.
  Fixed 22 January 2025, released in Slope 21.0 Build 56.
• GE-2388 Add option to discard circles by depth of failure.
  Fixed 27 January 2025, released in Slope 21.0 Build 56.
• GE-2389 issues with ruler labels being hidden / partially displayed need to be fixed.
  Fixed 12 January 2025, released in Slope 21.0 Build 56.
• GE-2381 Convert seepage analysis generated pore-pressures to piezometric pore pressure type prior to analysis.
  Fixed 15 December 2024, released in Slope 21.0 Build 56.
• GE-2314 Scale of FOS in graphical output not changing.
  Fixed 13 November 2024, released in Slope 21.0 Build 55.
• GE-2304 FOS not affected when the capacity data for reinforcement in Slope is made zero.
  Fixed 13 November 2024, released in Slope 21.0 Build 55.
• GE-2361 -1 in the analysis method dropdown.
  Fixed 12 November 2024, released in Slope 21.0 Build 55.
• GE-2355 Analysis results are not consistent.
  Fixed 11 November 2024, released in Slope 21.0 Build 55.
• GE-2318 Unticking limit radius option in "Slip surfaces" panel produces no results.
  Fixed 5 November 2024, released in Slope 21.0 Build 55.
• GE-2335 Not able to open tabular output.
  Fixed 4 November 2024, released in Slope 21.0 Build 55.
• GE-2329 Slip number is wrong.
  Fixed 22 October 2024, released in Slope 21.0 Build 55.
• GE-2341 Worst case is calculated wrong.
  Fixed 22 October 2024, released in Slope 21.0 Build 55.
• GE-2327 Results are different from previous release(Build 54).
  Fixed 16 October 2024, released in Slope 21.0 Build 55.
• GE-856 User can draw layers in front of another layer.A warning message will be given if polygon overlaps with another polygon.
  Fixed 14 October 2024, released in Slope 21.0 Build 55.
• GE-2315 Total number of slips analyzed and rejected are different.
  Fixed 03 October 2024, released in Slope 21.0 Build 55.
• GE-1984 Slope shuts down without error message when any node outside the model is modified.
  Fixed 02 October 2024, released in Slope 21.0 Build 55.
• GE-1592 Mesh nodes from SSS analysis can be selected after calculation.
  Fixed 02 October 2024, released in Slope 21.0 Build 55.
• GE-2313 User can add/delete nodes even after analysis.
  Fixed 02 October 2024, released in Slope 21.0 Build 55.
• GE-1905 Mesh nodes from SSS analysis can be selected after calculation.
  Fixed 29 September 2024, released in Slope 21.0 Build 55.
• GE-2309 The reinforcement line changes direction when ever we change the direction of the slip.
  Fixed 29 September 2024, released in Slope 21.0 Build 55.
• GE-2305 FOS is changing between graphical output and tabular output.
  Fixed 29 September 2024, released in Slope 21.0 Build 55.
• GE-2072 Issues with links within "Welcome window".
  Fixed 24 September 2024, released in Slope 21.0 Build 55.
• GE-2070 Application can crash when adding UDL copied from spreadsheet.
  Fixed 19 September 2024, released in Slope 21.0 Build 55.
• GE-2278 Unable to Switch between Slip surfaces from gateway menu.
  Fixed 28 August 2024, released in Slope 21.0 Build 54.
• GE-2272 Add Non circular slips optimization data in tabular output.(Only for internal build)
  Fixed 27 August 2024, released in Slope 21.0 Build 54.
• GE-2270 Add error code to trap negative FOS in M-P method.
  Fixed 27 August 2024, released in Slope 21.0 Build 54.
• GE-2260 Crash due to open/edit SLS partial factor calculation.
  Fixed 7 August 2024, released in Slope 21.0 Build 54.
• GE-2237 Fix issue with the negative restoring moments (zero FoS) for Morgenstern-Price method.
  Fixed 14 July 2024, released in Slope 21.0 Build 54.
• GE-2241 Prevent analysis of models with Janbu method of analysis and reinforcements active.
  Fixed 10 July, released in Slope 21.0 Build 54.
• GE-2131 GWT details need to be printed in Tabular output.
  Fixed 9 July 2024, released in Slope 21.0 Build 54.
• GE-2243 When the slip circle are rejected, an error message needs to displayed for non circular slip.
  Fixed 8 July 2024, released in Slope 21.0 Build 54.
• GE-2244 Standardize precision in UI and solver level especially for non-circular slip surface co-ordinates.
  Fixed 8 July 2024, released in Slope 21.0 Build 54.
• GE-2240 Files with seepage calculations sometimes crash during analysis.
  Fixed 26 June 2024, released in Slope 21.0 Build 53.
• GE-2226 Minimum FoS keeps changing when switching off "Show multiple slips" when seepage analysis is enabled.
  Fixed 23 June 2024, released in Slope 21.0 Build 53.
• GE-2223 Slope is crashing crashing when opening some files.
  Fixed 23 June 2024, released in Slope 21.0 Build 53.
• GE-2211 Slip circles are not rejected even when they intersect vertical boundary of the startum.
  Fixed 2 June 2024, released in Slope 21.0 Build 53.
• GE-2143 Fix issue with FOS changing when only one slip circle is displayed.
  Fixed 3 May 2024, released in Slope 21.0 Build 52.
• GE-2136 Investigate why FOS=0 eventhough slip circles are generated.
  Fixed 5 March 2024, released in Slope 21.0 Build 52.
• GE-1577 Add "delete" option/button to reinforcement partial factor combinations.
  Fixed 9 Oct 2023, released in Slope 21.0 Build 51.
• GE-1790 Updated help manual with more details on reinforcement calculations.
  Fixed 7 Nov 2023, released in Slope 21.0 Build 51.
• GE-1880 Horizontal force from water pressure is ignored on vertical potions of the submerged ground.
  Fixed 5 Nov 2023, released in Slope 21.0 Build 51.
• GE-1969 Slope is crashing during analysis of some files having reinforcement..
  Fixed 27 Oct 2023, released in Slope 21.0 Build 51.
• GE-1970 The overdesign factor is printed incorrectly in the Graphical output of results.
  Fixed 5 Sep 2023, released in Slope 21.0 Build 51.
• GE-2022 Reporting of reinforcement details from COM is incorrect in some cases.
  Fixed 29 Oct 2023, released in Slope 21.0 Build 51.
• GE-2023 FoS is sometimes incorrect when materials are assigned GW profile.
  Fixed 6 Nov 2023, released in Slope 21.0 Build 51.
• GE-2024 Sample files crash when user selects reinforcement "material partial factors".
  Fixed 29 Oct 2023, released in Slope 21.0 Build 51.
• GE-2055 Some of the slip circles show different results when analysed as a single circle versus analysing as a grid.
  Fixed 10 Nov 2023, released in Slope 21.0 Build 51.
• GE-1922 Every time the model file is run provides different set of results.
  Fixed 7 Jul 2023, released in Slope 21.0 Build 50.
• GE-1591 Infinite loop after attempting to input material data.
  Fixed 27 Jun 2023, released in Slope 21.0 Build 50.
• GE-1578 Slope crashes when modifying name of reinforcement partial factor combination.
  Fixed 26 Jun 2023, released in Slope 21.0 Build 50.
• GE-1815 Slope crashes when "Show multiple slips" is switched off.
  Fixed 26 Jun 2023, released in Slope 21.0 Build 50.
• GE-1894 In Slope 21.0 c/po' option (material undrained) does not appear to work correctly.
  Fixed 6 Jun 2023, released in Slope 21.0 Build 50.
• GE-1621 Slope giving weird geometry opening the old file in new version of Slope.
  Fixed 4 Apr 2023, released in Slope 21.0 Build 50.
• GE-1789 Slope crashes when opening some JSON files.
  Fixed 4 Apr 2023, released in Slope 21.0 Build 50.
• GE-1847 The reinforcement partial factor data in reinforcement dialog is not in sync with tabular output.
  Fixed 4 Apr 2023, released in Slope 21.0 Build 49.
• GE-1798 Report the Morgestern-Price analysis details and partial factor data in tabular output of results.
  Fixed 17 Mar 2023, released in Slope 21.0 Build 48.
• GE-1808 Remove dependency of Slope on xml file for partial factors.
  Fixed 14 Mar 2023, released in Slope 21.0 Build 48.
• GE-1819 Update COM interface to enable editing of revised user defined partial factor sets.
  Fixed 17 Mar 2023, released in Slope 21.0 Build 48.
• GE-1804 Add functionality to update reinforcement partial factors during file opening when they have been modified outside the program.
  Fixed 22 Feb 2023, released in Slope 21.0 Build 47.
• GE-1576 Update old Slope icon.
  Fixed 12 Jan 2023, released in Slope 21.0 Build 46.
• GE-1575 Slope version, build number, not displayed.
  Fixed 12 Jan 2023, released in Slope 21.0 Build 46.
• GE-1746 Non circular slip surfaces are not read from JSON file.
  Fixed 12 Jan 2023, released in Slope 21.0 Build 46.
• GE-1743 Add COM functionality to retrieve existing reinforcement data.
  Fixed 11 Jan 2023, released in Slope 21.0 Build 46.
• GE-1742 Vertical effective stress computed for reinforcement calculations is incorrect in some cases.
  Fixed 03 Jan 2023, released in Slope 21.0 Build 45.
• GE-1737 Extend COM interface in Slope to allow the user to update reinforcement data.
  Fixed 30 Dec 2022, released in Slope 21.0 Build 45.
• GE-1712 Non-circular slip is not considered while analyzing file in some cases.
  Fixed 28 Dec 2022, released in Slope 21.0 Build 45.
• GE-1669 Analysing files with non-circular slips leads to crashing of Slope in some cases.
  Fixed 03 Jan 2023, released in Slope 21.0 Build 45.
• GE-1668 Some of the file saved in JSON format doesn't re-open again in Slope.
  Fixed 04 Jan 2023, released in Slope 21.0 Build 45.
• GE-679 "Add Slip" tab in the Slip surfaces for non-circular slip planes is not visible after adding one time.
  Fixed 04 Jan 2023, released in Slope 21.0 Build 45.
• GE-1692 The property panes are sometimes greyed out even after the results are deleted by the user.
  Fixed 16 Dec 2022, released in Slope 21.0 Build 44.
• GE-1691 Fixing issue with incorrect units for minimum slip weight.
  Fixed 16 Dec 2022, released in Slope 21.0 Build 44.
• GE-1684 Correcting the demo video of Slope 21
  Fixed 16 Dec 2022, released in Slope 21.0 Build 44.
• GE-1671 Calulations with suction data specified in Water table give incorrect results.
  Fixed 13 Dec 2022, released in Slope 21.0 Build 44.
• GE-1670 Non-circular slip are skipped from analysis in some cases.
  Fixed 1 Dec 2022, released in Slope 21.0 Build 43.
• GE-1643 Slips with centres below the ground are analysed in some cases.
  Fixed 22 Nov 2022, released in Slope 21.0 Build 43.
• GE-1644 In some cases, analysed slips have one of the ends embedded below the ground surface.
  Fixed 22 Nov 2022, released in Slope 21.0 Build 43.
• GE-1621 Slope giving weird geometry opening the old file in new version of Slope.
  Fixed 21 Nov 2022, released in Slope 21.0 Build 43.
• GE-922 Restore labelling functionality in Slope 21.0 graphical output.
  Fixed 14 Nov 2022, released in Slope 21.0 Build 43.
• GE-1628 Some Slope files saved in Build 40 give different results when analysed in Build 42.
  Fixed 8 Nov 2022, released in Slope 21.0 Build 43.
• GE-1640 Results summary shows zeros for centre and radius of some rejected circles.
  Fixed 8 Nov 2022, released in Slope 21.0 Build 43.
• GE-884 Python COM example comment says it's for Alp.
  Fixed 7 Nov 2022, released in Slope 21.0 Build 43.
• GE-1362 Slope: "Select all" button in the "Home" category of the ribbon has no icon.
  Fixed 4 Nov 2022, released in Slope 21.0 Build 43.
• GE-1615 "Show Water table" option is not available in Graphical Input.
  Fixed 26 Oct 2022, released in Slope 21.0 Build 43.
• GE-1409 Adding a shortcut for batch testing.
  Fixed 19 Oct 2022, released in Slope 21.0 Build 43.
• GE-1508 Reinstate automatic test procedure.
  Fixed 11 Oct 2022, released in Slope 21.0 Build 43.
• GE-1549 Reinforcement partial factor dialog is not allowing addition of user defined partial factor sets.
  Fixed 26 Sep 2022, released in Slope 21.0 Build 42.
• GE-1435 Issues related to input custom partial factors calculations.
  Fixed 29 July 2022, released in Slope 21.0 Build 41.
• GE-1392 Materials sometimes are not assigned correctly to slices and this causes reduced slip weight.
  Fixed 29 July 2022, released in Slope 21.0 Build 41.
• GE-1356 Domain polygon is not generated correctly.
  Fixed 29 July 2022, released in Slope 21.0 Build 41.
• GE-1399 Deleting a water profile does not reassign the property(Group) of members.
  Fixed 29 July 2022, released in Slope 21.0 Build 41.
• GE-1319 Cannot define Non-circular slip surfaces in SLOPE.
  Fixed 19 May 2022, released in Slope 21.0 Build 40.
• GE-1054 Snap tool visually misleading when pointing at nodes added at various grid scales.
  Fixed 17 May 2022, released in Slope 21.0 Build 40.
• GE-1044 After creating nodes/lines/layers, the nodes cannot be deleted.
  Fixed 17 May 2022, released in Slope 21.0 Build 40.
• GE-1041 Snap defaults to 5m but shows 1m in toolbar.
  Fixed 17 May 2022, released in Slope 21.0 Build 40.
• GE-1034 Clicking mouse wheel to pan/scroll does not work.
  Fixed 17 May 2022, released in Slope 21.0 Build 40.
• GE-1032 In the "Zoom/Scale" section, the "Fit View" button reads "Fit".
  Fixed 17 May 2022, released in Slope 21.0 Build 40.
• GE-1294 Bug in sorting polylines level wise before generating areas.
  Fixed 12 May 2022, released in Slope 21.0 Build 40.
• GE-1283 Max suction in Water data dialog box is not saved.
  Fixed 12 May 2022, released in Slope 21.0 Build 40.
• GE-1271 Recent files are not shown in welcome screen dialog box.
  Fixed 12 May 2022, released in Slope 21.0 Build 40.
• GE-1265 After successfully running analysis, program does not prompt to "save file" on closing.
  Fixed 12 May 2022, released in Slope 21.0 Build 40.
• GE-1263 Deleting a material changes the materials already assigned to layers.
  Fixed 12 May 2022, released in Slope 21.0 Build 40.
• GE-1262 Deleting a material does not remove it from Safe data class.
  Fixed 12 May 2022, released in Slope 21.0 Build 40.
• GE-1227 Copying data into "Materials" table does not work correctly.
  Fixed 12 May 2022, released in Slope 21.0 Build 40.
• GE-1053 Cancelling the tabular output dialogue opens it regardless.
  Fixed 12 May 2022, released in Slope 21.0 Build 40.
• GE-1194 Release for polylines feature in Slope 21.0 Build 39.
  Fixed 22 April 2022, released in Slope 21.0 Build 39.
• GE-1205 Remove deprecated groundwater data from the Slope tabular output.
  Fixed 14 April 2022, released in Slope 21.0 Build 39.
• GE-967 - Error in tabular output for Rockbolts Type B.
  Fixed 12 January 2022, released in Slope 21.0 Build 38.
• GE-796 Slope - Issue with closing areas.
  Fixed 7 January 2022, released in Slope 21.0 Build 38.
• GE-838 Slope - Unipac installer is not getting installed on university network.
  Fixed 27 October 2021, released in Slope 21.0 Build 36.
• GE-647 Error message type on opening example model within Program Files.
  Fixed 27 September 2021, released in Slope 21.0 Build 35.
• GE-763 Slope – files not in SI units plot incorrectly on graphical output.
  Fixed 27 September 2021, released in Slope 21.0 Build 35.
• GE-635 Graphical output button (home tab) shows graphical input controls.
  Fixed 27 September 2021, released in Slope 21.0 Build 35.
• GE-743 Slope - bug with co-ordinate entry.
  Fixed 16 September 2021, released in Slope 21.0 Build 35.

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Slope 19.1: New Features

• Undo/Redo feature added in table views.
• Feature logging added to track numbers and types of analysis.
• Program converted to Unicode and various other underlying interface changes.
• Partial factor format revised - requires resetting of factors and re-analysis.

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Slope 19.1: Fixes

• SLOPE-11 - Title shows wrong min factor sometimes when plotting all circles.
  Fixed 2 April 2015, released in Slope 19.1 build 1.
• SLOPE-12 - Entering new data into Materials table caused a crash.
  Fixed 17 April 2015, released in Slope 19.1 build 2.
• SLOPE-13 - Radius increment not correctly read from file.
  Fixed 30 April 2015, released in Slope 19.1 Build 5.
• SLOPE-14 - Program crashes reading non-circular slips.
  Fixed 19 May 2015, released in Slope 19.1 Build 5.
• SLOPE-15 - Program crashed reading file with saved text labels.
  Fixed 23 June 2015, released in Slope 19.1 Build 6.
• SLOPE-16 - Contour plot of FoS no longer working.
  Fixed 1 Sept 2015, released in Slope 19.1 Build 7.
• SLOPE-17 - Improvements to graphical output of water table.
  Fixed 3 Sept 2015, released in Slope 19.1 Build 7.
• SLOPE-18 - Entry of numbers into tables did not work correctly in localised settings using a comma for the decimal delimiter.
  Fixed 3 Nov 2015, released in Slope 19.1 Build 9.
• SLOPE-19 - Tabular output showed all zeroes. (Appears caused by fix for SLOPE-18! Gave incorrect undefined number for min number to be output)
  Fixed 17 Nov 2015, released in Slope 19.1 Build 10.
• SLOPE-20 - Graphical output showed only partial slip circles when units were kip-ft.
  Fixed 4th Dec 2015, released in Slope 19.1 Build 11.
• SLOPE-21 - Circles fail to analyse when multiple phreatic surfaces defined.
  Fixed 21 January 2016, released in Slope 19.1 Build 12.
• SLOPE-22 - Items on Gateway are in the wrong order (Titles after data).
  Fixed 22 January 2016, released in Slope 19.1 Build 12.
• SLOPE-23 - Reinforcement not drawn in correct place on a right-facing slope.
  Fixed 29 February 2016, released in Slope 19.1 Build 13.
• SLOPE-27 - Error where slip circle coincides exactly with edge of soil strata.
  Fixed 22 March 2017, released in Slope 19.1 Build 17.
• SLOPE-28 - Material strength reduction factor not used to calculate geotextile strength.
  Fixed 4 Oct 2017, released in Slope 19.1 Build 19.
• SLOPE-29 - Material factors revert to SLS when reopening dialog.
  Fixed 4 Oct 2017, released in Slope 19.1 Build 19.
• SLOPE-37 - Incorrect result for EC7 example with varying undrained cohesion.
  Fixed 4 Oct 2017, released in Slope 19.1 Build 19.
• GE-535 - Company logo shows up in the print preview but not in the printed page.
  Fixed 12 Apr 2021, released in Slope 19.1 Build 21.
• GE-549 - Company name and logo path are truncated when re-opening file.
  Fixed 21 Apr 2021, released in Slope 19.1 Build 22.

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Slope 19.0: New Features

• Added New Model Wizard to create a slope model with minimum input data.
• Added new Preferences dialog, Units dialog, Startup dialog and Help menu.
• "Partial Factor Analysis" option is added which allows the user to perform calculations based on ULS partial factors(EC7-DA1-C1, EC7-DA1-C2...).(SP2 onwards)
• Enhancements are made to the Graphical Output.(SP2 onwards)
• Allow selection of a range of slip surfaces to plot on graphical output (SP2 Build 9 onwards)
• Update to reinforcement calculations to comply with BS8006:2 (2011) (SP3 Build 11 onwards)
• Dxf Import option added (SP3 Build 11 onwards)
• User can select multiple slips for graphical output by right-clicking on centres grid.(SP3 Build 24 onwards.)

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Slope 19.0: Fixes

• Bulk weight of materials vs unit weight of groundwater unnecessary check.
  [NCR 3377] (Fixed on 03 June 2009; released in Slope 19.0 Build 0)
• Non-numerical results are output if reinforcement plate capacity is set to zero.
  [NCR 3472](Fixed 27 July 2009; released in Slope 19.0 Build 0)
• During the analysis phase it says that there are no errors detected but then says that an invalid argument was encountered.
  [NCR3613](Fixed 27 July 2009; released in Slope 19.0 Build 0)
• Flickering is observed when reinforcement and stratum dialogs are opened.
  [NCR 3629](Fixed on 09 June 2009; released in Slope 19.0 Build 0)
• XP look and feel missing in 18.2.2.1.
  [NCR 3638](Fixed on 10 June 2009; released in Slope 19.0 Build 0)
• Warnings/Errors can't be seen if they exceed the length of the edit box in"Data Check" dialog.
  [NCR 3687](Fixed on 27 July 2009; released in Slope 19.0 Build 0)
• Graphical Output button in Slope toolbar is active even when there are no results.
  [NCR 3688](Fixed on 27 July 2009; released in Slope 19.0 Build 0)
• Grid of Centres is not shown in the Graphical Input even when the "Slips" button of Graphical Toolbar is active.
  [NCR 3690](Fixed on 28 July 2009; released in Slope 19.0 Build 0)
• Check related to "Tangent surface" type of "Circle radius specification" is performed even if non-circular slip is selected.
  [NCR 3821](Fixed on 31 July 2009; released in Slope 19.0 Build 0)
• In Slope 19.0.0.0 if a file having results is opened and the Graphical output is viewed, the grid of centres isn't shown properly. The grid can be viewed properly by resizing the view.
  [NCR 3857] (Fixed on 14 August 2009; released in Slope 19.0 Build 2)
• Default Units for a new file aren't the same as the units that were set for the last saved file.
  [NCR 3866] (Fixed on 20 August 2009; released in Slope 19.0 Build 2)
• Input piezometer data graphically by LEFT clicking. Edit the x-coordinate value of piezo point via the "Piezometer Data" dialog which pops up after left clicking. The modified value of x-cood isn't reflected in the Piezometer table.
  [NCR 3869] (Fixed on 21 August 2009; released in Slope 19.0 Build 2)
• Black colour replaces the "Fill 8" colour in the Graphics View.
  [NCR 3879] (Fixed on 27 January 2010; released in Slope 19.0 Build 2)
• Error of type "Unrecognised Module" is displayed when some files written in versions older than 18.2 Build 2 Release 1 are opened.
  [NCR 3883] (Fixed on 01 February 2010; released in Slope 19.0 Build 2)
• The text in the second column of the Step by Step Guide table (in the chm Help File) appears to be constricted for some rows.
  [NCR 3926] (Fixed on 16 September 2009; released in Slope 19.0 Build 2)
• Units dialog does not open.
  [NCR 4072] (Fixed on 08 October 2009; released in Slope 19.0 Build 2)
• Slope crashes when "Nail Force is applied as surface load".
  [NCR 4157] (Fixed on 09 November 2009; released in Slope 19.0 Build 2)
• Slope crashes in the Graphical View class.
  [NCR 4159] (Fixed on 04 November 2009; released in Slope 19.0 Build 2)
• In the Graphics View, the first soil nail is drawn in opposite direction.
  [NCR 4163] (Fixed on 09 November 2009; released in Slope 19.0 Build 2)
• Black line along the bottom of the icons.
  [NCR 4169] (Fixed on 04 November 2009; released in Slope 19.0 Build 2)
• It should be possible to import a bitman image to the Graphical Input view, in order to trace input data.
  [NCR 4358] (Fixed on 28 January 2010; released in Slope 19.0 Build 2)
• The filename does not appear in the footer of Output View prints.
  [NCR 4359] (Fixed on 27 January 2010; released in Slope 19.0 Build 2)
• Materials' Data is shown in the Output View on two lines, making it difficult to read.
  [NCR 4360] (Fixed on 29 January 2010; released in Slope 19.0 Build 2)
• Pore water pressures are incorrectly calculated for the slices above the water table.
  [NCR 4395] (Fixed on 27 January 2010; released in Slope 19.0 Build 2)
• Tabular output does not line up correctly particularly in the Material Properties table.
  [NCR 4561] (Fixed on 05 October 2010; released in Slope 19.0 SP1 Build 4)
• C0 value remains greyed out when the condition (in the materials table) is changed from "Drained - power curve" to "Undrained".
  [NCR 4574] (Fixed on 04 October 2010; released in Slope 19.0 SP1 Build 4)
• Check is not performed properly when limiting radius is entered through the New Model Wizard.
  [NCR 4647] (Fixed on 04 October 2010; released in Slope 19.0 SP1 Build 4)
• Slope should give a warning message when there are no slip circles.
  [NCR 4672] (Fixed on 05 October 2010; released in Slope 19.0 SP1 Build 4)
• The Graphical Output shows the water table as an incomplete surface.
  [NCR 5153] (Fixed on 30 November 2010 & 7 Feb 2011; released in Slope 19.0 SP1 Build 4/5)
• Hatching of Water table view is done only if the bottom most stratum has hydrostatic or piezometric kind of pore pressure distribution.
  [NCR 5363] (Fixed on 06 January 2011 & 7 Feb 2011; released in Slope 19.0 SP1 Build 4/5)
• Partially defined strata are not shown in the Graphical Output.
  [NCR 5440] (Fixed on 26 November 2010; released in Slope 19.0 SP1 Build 4)
• Grid of centres is not shown completely in the Graphical Input.
  [NCR 5610] (Fixed on 10 January 2011; released in Slope 19.0 SP1 Build 4)
• Graphical Input view does not open for non-circular slips.
  [NCR 5724] (Fixed on 17 February 2011; released in Slope 19.0 SP2 Build 7)
• Graphical Input view does not open for cases of circular slips with undefined centre coordinates.
  [NCR 6307] (Fixed on 12 September 2011; released in Slope 19.0 SP2 Build 7)
• Program crashes while viewing the Graphical Output of some files.
  [NCR 6328] (Fixed on 13 September 2011; released in Slope 19.0 SP2 Build 7)
• Sometimes the Graphical Output of Slope shows a very wide view for some cases of non-circular slips.
  [NCR 6391] (Fixed on 30 September 2011; released in Slope 19.0 SP2 Build 7)
• Loads are not included if coordinates are entered in reverse, but they are shown in the Graphical Input which is misleading.
  [NCR 6580] (Fixed on 16 January 2012; released in Slope 19.0 SP2 Build 7)
• Odd behaviour of view limits in the Graphical Output.
  [NCR 6581] (Fixed on 13 December 2011; released in Slope 19.0 SP2 Build 7)
• Slope does not give all checks at once during analysis.
  [NCR 6645] (Fixed on 16 January 2012; released in Slope 19.0 SP2 Build 7)
• Slope does not give proper error information in some cases.
  [NCR 6648] (Fixed on 16 January 2012; released in Slope 19.0 SP2 Build 7)
• Surface Loads table in the tabular output is different from the Surface Loads table accessed via the Gateway.
  [NCR 6685] (Fixed on 24 January 2012; released in Slope 19.0 SP2 Build 8)
• Method Partial Factors table in the tabular output is different from the Method Partial Factors table accessed via the Gateway.
  [NCR 6686] (Fixed on 24 January 2012; released in Slope 19.0 SP2 Build 8)
• Changing the unfavourable variable load factor's value doesn't affect the results.
  [NCR 6687] (Fixed on 24 January 2012; released in Slope 19.0 SP2 Build 8)
• A white line is seen below every icon in the Graphics toolbar.
  [NCR 6688] (Fixed on 24 January 2012; released in Slope 19.0 SP2 Build 8)
• Revised EC7 DA1-1 implementation to apply factor to soil unit weight rather than disturbing moment.
  [NCR 6764] (Fixed 8/2/2012; released in Slope 19.0 SP2 Build 9)
• Graphical output view hangs displaying non-circular slip results (bug introduced in Build 9).
  [NCR 6915] (Fixed 14 March 2012: released in Slope 19.0 SP2 Build 10)
• Strata boundaries shown as dotted grey lines instead of solid line.
  [NCR 6916] (Fixed 14 March 2012: released in Slope 19.0 SP2 Build 10)
• Common point coordinates not loaded in dialog if outside of boundaries of other data.
  [NCR 6803] (Fixed 27 June 2012: released in Slope 19.0 SP3 Build 11)
• Opening Partial Factors dialog loses values in Reinforcement dialog.
  [NCR 7073] (Fixed 27 June 2012: released in Slope 19.0 SP3 Build 11)
• File with results of all high FoS crashed in previous version.
  [NCR 7212] (Fixed 31 May 2012: released in Slope 19.0 SP3 Build 11)
• Always show critical FoS in title and legend of graphical output.
  [NCR 7213] (Fixed June 2012: released in Slope 19.0 SP3 Build 11)
• Contours of FoS can disappear when editing the contour interval.
  [NCR 7214] (Fixed June 2012: released in Slope 19.0 SP3 Build 11)
• Wrong partial factors shown with file name, in partial factor dialog.
  [NCR 7342] (Fixed October 2012: released in Slope 19.0 SP3 Build 13)
• Graphics for reinforcement and loads shown incorrectly when units set to ft.
  [NCR 7368] (Fixed October 2012: released in Slope 19.0 SP3 Build 13)
• Reading in files always triggers non-standard partial factor warning.
  [NCR 7503] (Fixed October 2012: released in Slope 19.0 SP3 Build 13)
• Problems reading reinforcement data for previous files (19.3.0.11).
  [NCR 7214] (Fixed October 2012: released in Slope 19.0 SP3 Build 13)
• Max FoS incorrect in setting contour range plotting.
  [NCR 7571] (Fixed 6 November 2012: released in Slope 19.0 SP3 Build 14)
• Files saved with Titles' bitmaps may not reopen correctly.
  [NCR 7569] (Fixed 5 November 2012: released in Slope 19.0 SP3 Build 14)
• Copying fields in material table overwrote description.
  [NCR 7507] (Fixed October 2012: released in Slope 19.0 SP3 Build 15)
• Program hung if minimum FoS was greater than 5 - got stuck setting up graphics.
  [NCR 7980] (Fixed 10 April 2013: released in Slope 19.0 SP3 Build 15)
• Program hung if only 1 successfully analysed circle was available.
  [NCR 8145] (Fixed 28 June 2013: released in Slope 19.0 SP3 Build 15)
• Graphical output hung when range of FoS less than 0.01 when rounded.
  [NCR 8193] Fixed 16 July 2013, released in Slope 19.0 SP3 Build 16)
• Potential for erroneous results when applying reinforcement (as a surface load) to vertical and near vertical walls.
  [NCR 8195] (Fixed 3 September 2013: released in Slope 19.0 SP3 Build 16)
• Significant increase in analysis time following fix of NCR8195.
  [NCR 8410] (Fixed 24 September 2013: released in Slope 19.0 SP3 Build 17)
• For soil nails the BS8006 analysis option, and method for calculating radial stress not saved. These will be saved in files created using build 17, but will need to be checked when opening older files.
  [NCR 8412] (Fixed 24 September 2013: released in Slope 19.0 SP3 Build 17)
• Analysis stopped with "encountered an improper argument" for a non-circular slip.
  [NCR 8430] Fixed 1 October 2013: released in Slope 19.0 SP3 Build 18.
• Graphical output unacceptably slow if a file with results was re-opened.
  [NCR 8525] Fixed 1 November 2013: released in Slope 19.0 SP3 Build 18.
• Lower stratum could have line endpoints higher than the stratum above.
  [NCR 8526] Fixed 1 November 2013: released in Slope 19.0 SP3 Build 18.
• Automatic testing update did not revise saved version number.
  [NCR 8565] Fixed 8 November 2013: released in Slope 19.0 SP3 Build 18.
• Strata not shown correctly in tabular output where vertical face is input by user (i.e. coordinates with same x but different y)
  [NCR 8003] Fixed 17 December 2013: released in Slope 19.0 SP3 Build 22.
• A new file with no method partial factors selected may display wrong partial factor set in tabular display.
  [NCR 8566] Fixed 17 December 2013: released in Slope 19.0 SP3 Build 22.
• On import DXF lines not automatically converted into ascending x order required by Slope.
  [NCR 8577] Fixed 17 December 2013: released in Slope 19.0 SP3 Build 22.
• Multiple strata on vertical face may give false error warning for crossing strata.
  [NCR 8645] Fixed 17 December 2013: released in Slope 19.0 SP3 Build 22.
• Re-analysis of single circle for graphical output obtained incorrect result when vertical loads present.
  [NCR 8814] Fixed 3 March 2014: released in Slope 19.0 SP3 Build 24.
• Plot of all circles shows title with greater FoS than the min in legend or tabular output.
  [NCR 9232] Fixed 22/7/2014, released in Slope 19.0 SP3 build 25.
• Re-opening and plotting of EC7 DA1-1 analyses could result in FoS being reduced by 1.35.
  [NCR 9250] Fixed 24/7/2014, released in Slope 19.0 SP3 Build 26.

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Slope 18.2 Build 2: New Features

• Speed of file saving is increased by storing only summary of results.
• User is informed when he tries to save the stratum in which the x-coordinates of the data points are not in increasing order.
• Limit radius option is provided in slip surface definition dialog box for defined radii case. User can limit the maximum value of radius by selecting it.
• The centre about which the moments are calculated in the non circular slip is added to the tabular output.
• Graphical view is enhanced for some of the non circular slips which are not scaled properly in the previous releases.

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Slope 18.2 Build 2: Fixes

• The program crashes when tabular output is opened for the cases where in the least factor of safety is greater than 1000.
  [NCR 3290] (Fixed on 07 Jan 2009; released in Release 1)
• Default Material Partial Factors(when no material partial factors were selected explicitly) were not correctly saved from the reinforcement dialog.
  [NCR 3276](Fixed 16 Dec 2008; released in Release 1)
• The program crashes if items on Groundwater table's context menu are exercised.
  [NCR 2450](Fixed 11 Dec 2008; released in Release 1)
• Data files with results may appear to be unnecessarily large, and to take an unnecessary amount of time to save.
  [NCR 2193](Fixed 11 Dec 2008; released in Release 1)

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Slope 18.2 Build 1: New Features

• Improvements to auto correct facility for Multiple Non-Circular Slips.
• Ability to specify Inclined Centre Grids for circular slip surfaces added.
• A 'Gateway' window has been implemented to provide easy access to input data, tabular data and graphical views.
• The Slope Toolbar has been implemented to provide easy access to the most frequently used views and commands.
• The menu structure has been re-arranged to provide a separate 'Graphics' menu to access settings for the Graphical Output view.
• Periodic web activation for Arup and Unipac editions added. (Release 9 onwards.)

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Slope 18.2 Build 1: Fixes

• Graphical input of non-circular slip surface is disabled.
  [NCR 38] (Fixed on 31 May 2006; released in Release 1)
• Implementation of Gateway.
  [NCR 642](Fixed 20 Feb 2007; released in Release 1)
• Remove link to Release Notes.
  [NCR 643](Fixed 20 Feb 2007; released in Release 1)
• XP look and feel.
  [NCR 644](Fixed; released in Release 1)
• Move Print Selection options to Examine Results.
  [NCR 645](Fixed 6 March 2007; released in Release 1)
• Pore pressure calcs wrong for Ru water spec.
  [NCR 897](Fixed 10 Jan 2007; released in Release 1)
• Error in analyses using horizontal acceleration.
  [NCR 929](Fixed 20 Feb 2007; released in Release 1)
• Error in hard copy print of graphical output.
  [NCR 989](Fixed 19 March 2007; released in Release 1)
• Water in channel apparently not applied as surcharge.
  [NCR 1081](Fixed 13 Feb 2007; released in Release 1)
• Factor of safety on loads not computed properly.
  [NCR 1080](Fixed 05 March 2007; released in Release 1)
• Effective width not used in geotextile pullout calc.
  [NCR 1185](Fixed 20 Feb 2007; released in Release 1)
• Non-circular slip checking.
  [NCR 1187](Fixed 21 March 2007; released in Release 1)
• Results write/read not consistent - program crashes.
  [NCR1241](Fixed 7 March 2007; released in Release 1)
• Geotextile pull-out calculations incorrectly ignore 'reinforcement pull-out factor' and 'economic ramifications of failure factor'. The help manual incorrectly suggests that Shear Strength of Soil τ = (σ_μ'tanδ + c_a)/(f_p/f_n) whereas is should be .../(f_p x f_n).
  [NCR 1507](Fixed 22 May 2007; released in Release 2)
• Unit weight soil factor is incorrectly applied in calculating pull-out resistance of reinforcement. It has a favourable effect so should be ignored.
  [NCR 1522](Fixed 29 May 2007; released in Release 2)
• The "Effective Width" edit box of the geotextile reinforcement form does not accept more than one digit without clicking the "Apply" button.
  [NCR 1694](Fixed 18 July 2007; released in Release 2)
• Automatic naming of tabs in the tabbed view need to be revised as it is solely dependent on the index of the object which results in repetition of names.
  [NCR1359](Fixed 7 September 2007; released in Release 3)
• Soil labels in graphical output always show "c'" (cohesion for drained material) even when the material is undrained.
  [NCR 1670](Fixed 7 September 2007; released in Release 3)
• Reinforcement partial factors not applied properly.
  [NCR 1933](Fixed 7 September 2007; released in Release 3)
• Batch testing fails for data files modelling non-circular slips.
  [NCR 1950](Fixed 7 September 2007; released in Release 3)
• User not prompted to save file while closing even if data has been changed in certain UI components.
  [NCR 1951](Fixed 7 September 2007; released in Release 3)
• Deleting property pages belonging to Strata, ground water and piezometric data is not deleting existing results. In addition, the user is
  not prompted to delete existing results when the deleting property sheets.
  [NCR 1957](Fixed 10 September 2007; released in Release 3)
• Deleting property sheets that are in use by certain strata, is not prevented. In addition, the references of the data items such as
  groundawater tables, piezometric data etc. are not updated.
  [NCR 1960](Fixed 10 September 2007; released in Release 3)
• Groundwater tables are plotted in the graphical output even if they are not active for any stratum.
  Also, hatching should be removed for these GW tables. Need to check whether same thing applies to piezo sets.
  [NCR 1964](Fixed 10 September 2007; released in Release 3)
• Slope may warn that layers overlap when they are specified to have coincident surfaces.
  [NCR 2192](Fixed 23 November 2007; released in Release 4)
• Font size button not working in tabular output.
  [NCR 2262](Fixed 23 November 2007; released in Release 4)
• Slope 18.2 fails to read fully a file written with version 17.7. It gives a warning regarding the 'slips' module.
  [NCR 2321](Fixed 7 December 2007; released in Release 4)
• The default value for effective width of geotextile would more usefully be set to 100% rather than 0%.
  [NCR 2328](Fixed 11 February 2008; released in Release 5)
• The default value for whether reinforcement is active or not would more usefully be set to "active" rather than "inactive".
  [NCR 2329](Fixed 11 February 2008; released in Release 5)
• The reinforcement property sheet's "Apply" button is not enabled when the bond length selection is changed.
  [NCR 2390](Fixed 7 January 2008; released in Release 5)
• Slope crashes if "Do not keep history of recently opened documents" Group Policy is set, and "File | Open" is selected.
  [NCR 2498](Fixed 7 February 2008; released in Release 5)
• Slope may incorrectly report "Common point too close to stratum point".
  [NCR 2508](Fixed 8 February 2008; released in Release 5)
• The help manual fails to give the meanings of f_cr, f_m11, f_m12, f_m21, f_m22 and f_n.
  [NCR 2511](Fixed 12 February 2008; released in Release 5)
• Contouring may produce misleading results if the 'save/display rejected circles' flag is unset in the Slip Definition data.
  [NCR 2721](Fixed 12 May 2008; released in Release 7: additional fix for files saved with earlier versions made on 12 June 2008)
• Incorrect result for prestressed anchors if angle of inclination was steeper than angle from circle centre.
  [NCR 2804](Fixed 12 June 2008; released in Slope 18.2.1.7)
• Slope crashing when opening file with non circular slip surface.
  [NCR 2947](Fixed 12 Aug 2008; released in Slope 18.2.1.8)
• Pore pressure values are not calculated correctly when Ru option is active.
  [NCR 3055](Fixed 4 Sep 2008; released in Slope 18.2.1.9)
• Help file incorrectly referred to some graphical options as still being under the View menu, when they have been moved to Graphics.
  [NCR 2626](Fixed 7 Nov 2008; released in build 12 (Slope.exe 18.2.1.10))
• Partial factor on adhesion incorrectly applied to specified bond strength of soil nails.
  [NCR 3209](Fixed 7 Nov 2008; released in build 12 (Slope.exe 18.2.1.10))

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Geo 18.1 Build 5: New Features

• Data files may now be emailed directly from the programs' interfaces via the 'File' menu.
• The text output of the results view has been improved. It may now be exported to a range of file formats via the 'File' menu.
• Standard sets of units (SI, kN-m, kip-ft and kip-in) may be selected via the Units and Preferences dialog.
• So as to help users to ensure that they are running the latest software a new version checking system has been implemented. This compares each executable file installed locally with the set that Oasys identifies as being the 'current' version. (The comparison is carried out locally; no data is transmitted to Oasys.) Executables for which updates are available are highlighted. Updates may then be downloaded from the Program's Downloads page on the Internet. This system enables rapid delivery of bug fixes and, occasionally, minor enhancements.
• Stratum specific ground water has been implemented. The user can now input phreatic surface and piezometric data specific to each stratum. A number of changes have been made to the user interface in order to facilitate this feature e.g. data entry of Strata, Groundwater and Piezometers. Graphical input has been improved to facilitate entry of multiple phreatic surfaces and piezometric profiles.
• Ability to enter and analyse multiple non-circular slips in one data file added.

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Geo 18.1 Build 5: Fixes

• Slow running over G-E network.
  [NCR 1] (Fixed 19 May 2006)
• Spurious display of "full" error message (old NCR 38) still occurs, crashes with reinforcement.
  [NCR 5] (Fixed 12 May 2005)
• Need to correct the set up material partial factors when retrieving old files.
  [NCR 8] (Fixed 19 May 2006)
• Wrong status for tick against slip surfaces. Program should shows tick against "Slip surfaces" after entered the data.
  [NCR 9] (Fixed 05 December 2005)
• Problem in showing the lengths of multiple layers of reinforcement on the graphical output.
  [NCR 11] (Fixed 25 May 2005)
• Problem with "Full" message, if paste across more than one cell in materials table.
  [NCR 14] (Fixed 05 May 2006)
• Problem in labeling thin soil strata. If user moves the label, it changes to reflect soil at the new location.
  [NCR 15] (Fixed 22 May 2006)
• Program does not always get correct slip circle when "tangent to stratum" method specified.
  [NCR 17] (Fixed 23 May 2005)
• Program needs to take account of reinforcements towards front of slip.
  [NCR 18] (Fixed 19 May 2006)
• Grout diameter field must be disabled for specified bond strength.
  [NCR 19] (Fixed 01 December 2005)
• The problem occurs when selecting the grid to be extended to find the minimum factor of safety. In some cases the grid does appear to extending beyond that specified however only by a point or so in each direction and leads factor of safety not found.
  [NCR 23] (Fixed 24 November 2005)
• Prestress in anchors applied per anchor, not per m run.
  [NCR 25] (Fixed 19 May 2006)
• Problem in deleting piezometric pore pressure data. It appears on the input screen to have been deleted but in fact is not and when the analysis is run reappears or reappears in a corrupted form.
  [NCR 29] (Fixed 17 March 2006)
• Problem with "Full" message, if analysis is performed with stratum that has no coordinates.
  [NCR 31] (Fixed 27 April 2006)
• Results for soil nail as surface load, and equivalent surface loads, should be same and problem in specifying reinforcement which affects inter slice force calculation.
  [NCR 32] (Fixed 02 May 2006)
• Water forces on the sides of slices are incorrect.
  [NCR 34] (Fixed 30 May 2006)(Released 30 May 2006 in Slope.exe 18.1.6.0)
• Version checking fails to identify the current version correctly.
  [NCR 35] (Fixed 26 May 2006)(Released 30 May 2006 in Slope.exe 18.1.6.0)
• Pasting using 'Ctrl+V' may fail to register the new data correctly.
  [NCR 36] (Fixed 30 May 2006)(Released 30 May 2006 in Slope.exe 18.1.6.0)
• Reinforcement Dialog: effective width field greyed out for geotextiles.
  [NCR 41](Fixed 19 June 2006)
• Y axis labels show odd values but correct interval, when slips are drawn.
  [NCR 47](Fixed 6 Oct 2006; released in Slope.exe 18.1.9.0)
• Water table(s) not shown on graphical output.
  [NCR 50](Fixed 4 Sept 2006)
• Stratum form view fails to load for new data file.
  [NCR 54](Fixed 4 Oct 2006; released in Slope.exe 18.1.9.0)
• Water table(s) not shown on graphical output.
  [NCR 50](Fixed 4 Sept 2006)
• Average pore pressure on base of slice incorrect for "no water" slices adjacent to slices with water present.
  [NCR 58](Fixed 19 Oct 2006; released in Slope.exe 18.1.10.0)
• Pore pressures at points on slip surface incorrect for Ru spec problems. (result of error in above fix!)
  [NCR 58](Fixed 12 Jan 2007; released in Slope.exe 18.1.11.0)
• Interslice forces (and therefore FoS) for horizontal acceleration problems incorrect in Sldcal 18.1.10 (released with Slope 18.1.10)
  [NCR 58](Fixed 25 Jan 2007; released in Sldcal 18.1.11.0)
  
• Geotextile pullout force calc ignored effective width.
  [NCR 1187](Fixed 19 Feb 2007, released in Slope 18.1.12.0)
  

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Outstanding Bugs

• When an "Open" dialogue box is opened, it would be good if (a) there was a "favourites" button, using the user's favourites as in Explorer, and (b) data/time appeared naturally without reorganising the box.Could the box be bigger?The box should re-appear each time with the format previously adopted by the user. [O-140].
  [NCR 2]
• Horizontal extension of strata and showing on the graphical output may not be correct.
  [NCR 7]
• Program extends problem limits in the graphical output beyond those defined in the input data - but extends the strata horizontally, this may not be correct.
  [NCR 16]
• Horizontal extension of strata and showing on the graphical output may not be correct.
  [NCR 33]
• Problem with "Full" message, if entering new data and activate reinforcement but without setting a valid set of partial factors. Problem does not occur if reinforcement inactive.
  [NCR 40]
• The program crashes if items on the Groundwater table's context menu are exercised.
  [NCR2450](Fixed 28 January 2008)
• Display of water pressures needs to be improved in graphical output.
  [NCR 2699]
• If "Help"->"Oasys on the Web"->"Online Support" menu item is selected it does not take to the slope application support page directly.
  [NCR 3313](Fixed 29 January 2009)
• Inconsistent approach to reinforcement location in graphics and calculations.
  [NCR 7751]

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© 2007 Oasys Ltd