Releasenotes

SAP2000 V12.0.0 2008-07-15

SAP2000 Version 12.0.0 Release Notes

© Copyright Computers and Structures, Inc., 2008

Release Date: 2008-07-15 This file lists all changes made to the SAP2000 since the previous version. Most changes do not affect most users. Significant issues are indicated with an exclamation mark (!) in the first column of the tables below.

Changes from V11.1.0 (2008-06-30) to V12.0.0 (2008-07-15)

Nomenclature Change

! Incident Description ! 11851 If you are upgrading from a previous version of SAP2000 (V11 or earlier), you should be

aware that there has been a significant change in nomenclature regarding loading: The term “load pattern” replaces “load case” of previous versions. The term “load case” replaces “analysis case” of previous versions. The term “load combination” has not changed.

These changes are being made consistently in all future releases of CSi products. These are simply changes in terminology; the concepts and behavior remain the same, and models from previous versions will open in V12 without any action required by you.

User Interface and Display Enhancements Implemented

! Incident Description ! 12585 The speed of the GUI has been significantly increased, particularly for accessing the

database tables and design information. 13175 You can now define Named Displays that include view orientation, view options, and the

display content (loads, assignments, displaced shape, forces, stresses, etc.). These Named Displays can be recalled later, and included in reports.

14057 Design Preferences settings have been moved from the Options menu to the Design menu. 14133 The OpenGL graphics mode has been updated for Vista and improved performance. 14992 A link is provided in the Help menu to take you to the SAP2000 V12 News page on CSI’s

web site. Here you will find the latest information about new features, Watch & Learn Tutorials, and other helpful information for both new and experienced users.

SAP2000 V12.0.0 2008-07-15

! Incident Description ! 14990 Settings files that used to be stored in the Windows folder have been moved to the local

application folder \Computers and Structures under Documents and Settings for each user. These files include the SAP0000.INI file, the .TB3 files that store changes to the menus and toolbars, and the default database table format files.

Modeling Enhancements Implemented

! Incident Description ! 12069 When defining the reinforcement for column-type frame sections properties, the concrete

cover is now specified to the outside of the confinement rebar. In previous versions (V11 and earlier), cover was specified to the center of the longitudinal rebar. Models from previous versions opened in V12 will be automatically adjusted so that the net location of the longitudinal rebar is not changed; subject to the restriction that the calculated cover to the confinement rebar will not be less than 1.5 inch or 40 mm, depending on the units in use for the model.

12996 Joint mass can now be assigned as weight, or as a volume of material. Conversion to mass units is automatic.

14599 Nonlinear gap (compression-only) and hook (tension-only) line and area springs are now available in the PLUS level of the program as well as the Advanced level of the program.

14607 In order to improve the default behavior of fiber hinges, the stress-strain curves of the Materials were changed as follows: (1) The default concrete nonlinear material model was changed from Simple to Mander, (2) The default hysteresis type for Concrete and Other materials was changed from Kinematic to Takeda, while all metal materials were left as Kinematic, (3) The number of points on the stress-strain curves was reduced to a minimum to gain improved efficiency, and (4) A final negative slope was added to all curves; this slope will be extrapolated to zero.

14611 The behavior of nonlinear plastic curves in Materials and Links was changed so that final slope, if negative, is extrapolated to zero. The previous behavior was to set any final negative slope to zero.

15269 Automatic open structure wind loads have been added for the “API 4F 2000” code.

Section Designer Enhancements Implemented

! Incident Description ! 12764 Section Designer (SD) has undergone a major enhancement to provide more capability and

consistency. Material properties are defined in SAP2000 rather than in SD, providing more consistency between different frame sections. Concrete Mander modeling is available for Caltrans sections and general sections. True Boolean operations are available for overlapping shapes. Fiber models can be defined for frame hinges and compared with exact integration for moment-curvature and PMM surfaces.

! 14442 Fiber hinges can now be assigned to frame elements that use Section Designer sections. The fiber layout is defined inside Section Designer.

SAP2000 V12.0.0 2008-07-15

BrIM – Bridge Information Modeler Enhancements Implemented

! Incident Description 11307 New vehicles have been added for Chinese codes JTG-D60-2004 and CJJ77-98. ! 11385 Detailed design checking has been implemented for prestressed concrete box-girder

superstructures according to the Chinese “JTG-D62-2004” code. Separate design checks are available for stress, crack (stress), flexural capacity, shear capacity, principal stress, and crack (principal stress). For more information, see the online help and documentation. This feature requires a SAP2000 Chinese license.

! 11386 Stress checking has been implemented for prestressed concrete box-girder superstructures according to the “AASHTO Standard 2000” code. For more information, see the online help and documentation.

! 11421 Comprehensive user load combinations can be generated in accordance with the following bridge design codes: “AASHTO Standard 2000”, “AASHTO LRFD 2007”, and “JTG-D62-2004.” The latter requires a Chinese SAP2000 license. Envelope combinations are created for each limit state of the chosen code, and these can be easily used for the superstructure design checks of Incident 11385, 11386, and 13186.

! 11553 A staged-construction scheduler feature has been added to the BrIM modeler that enables you to create staged-construction load cases using Gantt-chart methodology. Complex staged-construction projects can be easily laid out and modified. Multiple schedules can be maintained. A SAP2000 BrIM license is required for this feature, although you can use it for non-bridge models as well. See the on-line help and the Watch & Learn for more information.

! 11647 Temperature loading has been added to the BrIM modeler, including uniform temperature change and nonlinear temperature gradients, both positive and negative. Gradients are built-in for AASHTO and JTG design codes, and user-specified gradients are available.

12160 Tendon objects generated from BrIM models inherit the same name they were given in the Bridge Object, provided that the name is unique. This simplifies the identification of tendons in staged-construction analysis.

! 12163 Groups can now be defined within a Bridge Object based on a station range and type of bridge components (girder, top slab, bent, bearing, etc.) When updating a linked model, all SAP2000 objects created are automatically assigned to the corresponding group, simplifying staged-construction analysis.

! 12266 Significant enhancements have been made to the BrIM for more detailed modeling of common bridges. Bearings and foundation springs are now defined independently of the bents and abutments. Bents may have a single line of bearings for continuous superstructures, or a double line of bearings for discontinuous superstructures. Abutments may be modeled as soil springs of grade beams (abutments seats). More control of bearing placement and alignment is available. Span layout has been simplified, and other refinements have been added. The BrIM Wizard has been enhanced to guide you through the new features. For more information, see the online help and the Watch & Learn tutorial.

! 13186 Detailed design checking has been implemented for prestressed concrete box-girder superstructures according to the “AASHTO LRFD 2007” code. Separate design checks are available for stress, flexural capacity, shear capacity, and principal stress. For more information, see the online help and documentation, and the Watch & Learn tutorial.

SAP2000 V12.0.0 2008-07-15

! Incident Description 14745 New vehicles have been added, including the AASHTO LRFD Fatigue truck, and the

Caltrans P9 Fatigue permit truck. 14823 Length effects can now be specified for vehicles. Built-in types include AASHTO

Standard impact effect, British HA effect (previously available), Chinese JTG effect, and user-defined length effects. Length effects can be separately specified for concentrated and distributed loads. For concentrated loads, the magnitude of the load may vary with span length. For distributed load, the magnitude of the load may vary with the entire loaded length. Both lengths are computed automatically from the individual influence line of each response quantity.

Analysis Enhancements Implemented

! Incident Description ! 7836 A new feature called Model-Alive™ has been implemented that performs analysis

instantly after each change you make to the model. This works for changes made graphically, using menu commands, and through the interactive database editor. When using Model-Alive™, you should save your model periodically, since this is not done automatically, and changes made cannot be undone. Please see the online help and the Watch & Learn tutorial on this topic for more information.

! 11426 A new type of load case (previously analysis case), called “Hyperstatic”, has been added for calculating secondary forces due to prestressing, temperature, and other self-equilibrating loads. A Hyperstatic load case performs a linear analysis on a fully unrestrained structure subjected to loading by the reactions from a linear static load case under the self-equilibrating loads. See the online help for more information.

! 11427 Staged construction can now account for: (1) Changes in property modifiers applied to frames, tendons, and shells, (2) Changes to end releases applied to frame elements, and (3) Changes to section properties of frame, tendon, and shell elements. Staged construction load cases (previously analysis cases) can now specify individual objects as well as groups.

13875 Linear buckling analysis is now available in the PLUS level of the program as well as the Advanced level of the program.

! 13919 A parallel/multi-threaded equation solver has been implemented in addition to the existing standard and advanced solvers. The new solver offers significant speed-up on multi-processor machines, but is also somewhat faster than the advanced solver on single-processor machines. The new solver does not provide any instability information, so you should first check your structure for stability using eigen modal analysis, or by using the advanced or standard solvers.

SAP2000 V12.0.0 2008-07-15

Results Display and Output Enhancements Implemented

! Incident Description ! 13267 You can now quickly generate a complete formatted report using the menu command File

> Create Report. This report can contain pictures and tables of model data, analysis results, and design results. Simple control is available using the menu command File > Report Setup. Additional detailed control is available through an XML contents file that you can edit or create. See the online help and documentation for more information.

Design Enhancements Implemented

! Incident Description ! 11421 More user control is available for automatic design load combinations, and the distinction

between user-defined and automatic combinations has been clarified. See the online help for more information.

12129 The design preference and overwrite tables were updated for the “CAN/CSA-S16-01” steel frame design code.

12940 Database output tables were added for the “CAN/CSA-S16-01” steel frame design code. 12941 Database output tables were added for the “CSA-A23.3-04” and “CSA-A23.3-94” concrete

frame design codes. 14962 The Direct Analysis Method technical note has been updated. 15103 The “AISC 360-05/IBC 2006” steel frame design manual has been updated. 15357 The design preference and overwrite tables were updated as needed for all design codes. 15407 A series of minor enhancements have been made to the “CAN/CSA-S16-01” steel frame

design code. [1] Kappa is enforced to be zero per CSA 21.2.3.1(a). [2] Axial force is checked not to exceed phi*0.3*fy*A separately per CSA 27.3.2.1(b), 27.3. [3] The value 15500 changed to 15000 per CSA 27.2.2.1, 27.3(a)(ii), 13.7(a). [4] Minor adjustment has been made in the phi factor (interior and exterior) for continuity plate area calculation per CSA 14.3.2. [5] Concentrated plate load on column web has been adjusted for different MRF to include 1.1*Ry factor per CSA 27.2.5.2, 27.3, 27.4.4.5, 27.4.4.1 for doubler plate design. [6] The value of n has been imposed as 1.34 for axial compression capacity for LTB limit state per 13.3.2. [7] For "Overall Member Strength" limit state, the value of Cr is based on minimum of flexural buckling capacity based on K22L22/r22 and K33L33/r33 with K22=1 and K33=1. When the member undergoes uniaxial bending, Cr is based on only K33L33/r33 with K33=1. [8] Minor changes has been made in the slenderness requirement for LD CBF per CSA 27.6.3.1, 27.6.3.2 and 27.5.3.2.

SAP2000 V12.0.0 2008-07-15

Database Tables Enhancements Implemented

! Incident Description 13385 A button was added to the “Choose Tables” tree form for selecting output items such as

generalized displacements and section cuts.

Application Programming Interface (API) Enhancements Implemented

! Incident Description ! 14225 The OpenAPI can now be used to develop PlugIn modules that can be accessed using the

Tools menu inside SAP2000. You can write your own PlugIns, or use those supplied by a third party. Although anyone with a SAP2000 license can use the OpenAPI, support for development using the OpenAPI requires membership in the CSI Developers Network.

14633 Two new OpenAPI functions were added: SapObject.SapModel.PointObj.GetConnectivity and SapObject.SapModel.PointElm.GetConnectivity. These get all the objects or elements connected to a given point object or element, respectively.

External Import/Export Enhancements Implemented

! Incident Description 15260 When displaying shell stress or force arrows in any 2-D or 3-D view, the plot can be

exported to DXF. Each contour color level will be automatically written to a separate layer so that you can select the objects on that layer and control the color and line type.

User Interface and Display Incidents Resolved

! Incident Description 13410 An Incident was resolved in which invalid characters in object and property names could

cause failure to open or display models. Such models can now be opened but invalid object and property names will not be displayed in the graphics windows.

14555 An Incident was resolved in which resizing a window turns off any current selection and panning in a window hides the current selection but does not turn it off.

14164 An Incident was resolved in which the contours and displacement scaling were not properly handled when switching between classical and OpenGL graphics.

14906 An Incident was resolved in which the Remove Selection from View command did not always work properly, removing objects from view that were not selected.

15232 An Incident was resolved in which the extruded deformed shape of bridge deck sections was not plotted correctly. For the present release, the non-extruded deformed shape will be shown.

SAP2000 V12.0.0 2008-07-15

! Incident Description 15322 An Incident was resolved in which the behavior of the NBCC 2005 seismic load form was

incorrect when the model was locked.

Modeling Incidents Resolved

! Incident Description 15371 An Incident was resolved in which several minor drawing issues were corrected: (1) Could

not undo the right-click delete of a general grid line. (2) The quick draw of a curved frame element gave a runtime error. (3) The Draw command did not create needed section properties if none existed. (4) The Brace drawing tool did not draw perpendicular to the nearest Y edges, only to X edges.

Section Designer Incidents Resolved

! Incident Description 13804 Minor plotting issues in Section Designer were resolved under Enhancement 12764. 14929 An Incident was resolved in which Caltrans hinges could not be assigned to frames with

Section Designer section properties having prestressing tendons but no rebar.

BrIM – Bridge Information Modeler Incidents Resolved

! Incident Description 15044 An Incident was resolved in which the horizontal tendon profile generated for a curved

bridge was obviously not correct for a particular configuration. 15086 An Incident was resolved in which values entered into one cell were sometimes transferred

to a different cell on the BrIM Deck Section forms. 15264 An Incident was resolved in which a runtime error could be generated when the tendon

discretization was very small.

SAP2000 V12.0.0 2008-07-15

Analysis Incidents Resolved

! Incident Description 12678 An Incident was resolved in which the creation of the analysis model for large structures

with automatic meshing and many load patterns could take much longer than in Version 10.

Results Display and Output Incidents Resolved

! Incident Description 10533 An Incident was resolved in which the unit conversion was not correct for displaying stress

arrows for shells and solids. 12472 An Incident was resolved in which a runtime error sometimes occurred when Display >

Show Hinge Results > Show Individual Fiber Data was showing the backbone curve. 13394 An Incident was resolved in which relative displacements were shown when the absolute

displacements resulting from rotational ground acceleration were requested. Absolute displacements due to rotational ground acceleration are now available for direct-integration time-history analysis. For modal time-history analysis, only relative displacements are available.

Design Incidents Resolved

! Incident Description 12426 Minor updates were made to the Design manuals. 13129 An Incident was resolved in the computation of Acp and Aoh for ACI design codes where

the program was imposing the flange limit for L-shaped section while user has explicitly defined the shape as T-Shaped beam.

13746 An Incident was resolved in which the design of auto-select sections for the Indian steel frame design code did not always work.

13806 An Incident was resolved in which the computed time period was not enforcing the limiting period as per cl. 4.1.8.11-3(d) of NBCC 2005 auto seismic loads.

! 13867 An Incident was resolved in which the flexural capacity of box and rectangular sections was not correct for the Canadian steel frame design code “CAN/CSA-S16-01”.

13972 An Incident was resolved in which the classification of angles/double-angles for steel frame design code “BS5950 2000” was overly strict, resulting in a Class 3 section being Classified as Class 4.

14093 Same as 13746. ! 14469 An Incident was resolved in which the unit conversion for calculating the PMM ratios for

code “API RP 2A-LRFD 97” was incorrect.

SAP2000 V12.0.0 2008-07-15

! Incident Description 14492 An Incident was resolved in which the documentation incorrectly stated that the

column/beam capacity ratio calculation is needed for all SMF for all design categories (SDC=A, B, C, D, E, F). It is not needed for IMF and OMF. The program was already correct, only the documentation needed to be updated.

15297 The menu command Design > Lateral Bracing was changed to be enabled only when frame objects are selected, and to only apply to straight frame objects, not cables, tendons, or curved frames.

15411 An Incident was resolved in which design is being performed for Section Designer sections even if the no design option is chosen.

Database Tables Incidents Resolved

! Incident Description 14241 An Incident was resolved in which the database tables for the assignment of bridge

variations to the Precast U, Precast I, and Advanced Concrete Box deck sections were missing.

15181 An Incident was resolved in which the strain values for user-defined material stress-strain curves was incorrectly exported to tables.

15231 An Incident was resolved in which the Excel sheet name for the ACI 318-05 concrete design summary table had illegal characters.

15259 An Incident was resolved in which database tables for shell stresses do not print when repeated columns take up the whole page width. This was detected by the program and the tables did not pint. Fixed by reducing the width of the repeated columns

External Import/Export Incidents Resolved

! Incident Description 12452 An Incident was resolved in which certain Dimension and Tolerance Preference values

were being set to zero when importing a DXF file in metric units. 12677 An Incident was resolved in which the UNIT command is not recognized within the

second level load commands, JOINT LOAD, MEMBER LOAD, and FLOOR LOAD for importing STAAD files.

13215 An Incident was resolved in which a runtime error occurred when importing a STRUDL model with more than 10,000 supports.

13646 An Incident was resolved in which a runtime error occurred when importing a STAAD model with prismatic section properties defined with some parameter values equal to zero.

15271 An Incident was resolved in which DXF import units were not being utilized.

SAP2000 V12.0.0 2008-07-15

Miscellaneous

! Incident Description 12223 Minor cosmetic changes were made throughout the program. 12564 Tips of the Day have been updated. 14129 The splash screen now appears before rather than after the license is found. 14133 Warning messages that are shown on the screen when opening models from previous

versions are stored in the project log under menu command File > Project Log. 14169 Version number changed to 12.0.0 14795 The analysis .$OG file has been combined with the .LOG file, and they are saved in a

single file with extension .LOG. 14960 The SAP2000 Getting Started, Basic Analysis Reference, and Introductory Tutorial

manuals have been updated. 15368 The SAP2000 license number will be shown in printed and exported results. 15412 New Watch & Learn tutorials have been added, and others have been updated.

SAP2000 V11.0.8 2007-10-22 Page 1



Release Date: 2007-10-22 This file lists all changes made to the SAP2000 since the last release. Most changes do not affect most users. Significant issues are indicated with an exclamation mark (!) in the first column of the tables below.



! Incident Description 12848 Adding additional named views after a model was saved would delete previously defined

named views the next time the model was saved. This has been resolved. 12990 It was possible to delete frame, area, solid, and link properties even if they were assigned

to objects in the model. This resulted in null properties being assigned to these objects. This has been resolved so that even if you delete assigned properties, they are automatically restored and the assignments are not changed.

13041 Same as Incident 12848 13045 Plots of time-dependent stiffness shown under the Define > Materials command did not

correctly account for changes in units. This was a display issue only and did not affect analysis results. This has been resolved.

13083 Starting with Version 11.0.7, right-clicking on a document title in the Help > Documentation command did not always bring up the correct description of the document. This has been resolved.

13170 Captures of the display window using the command File > Capture Enhanced Metafile were not always properly scaled, cutting off part of the picture for certain monitor settings. This has been resolved for the capture of the current window. The option to capture a user region of the current window has been removed.


! Incident Description 13070 In order to achieve certain modeling purposes, negative proportional damping is now

permitted in direct-integration time-history cases. However, the use of negative damping is not generally recommended, especially for nonlinear cases.

SAP2000 V11.0.8 2007-10-22 Page 2


! Incident Description 13034 A runtime error was generated when using the underground-concrete-structures new-model

template with a circular hole. This has been resolved. 13078 A runtime error was generated when triangular area objects were extruded into solids using

the Edit > Extrude > Extrude Areas to Solids command. This has been resolved. 13153 A runtime error was generated after setting the number of trucks to zero in the

underground-concrete-structures new-model template. This has been resolved. ! 13159 The vertical acceleration component of wave loading computed using Linear theory had

the incorrect sign. This has been resolved.


! Incident Description 13250 An internal change was made to the axial strain increments used to compute the moment-

curvature relationship. This should improve the convergence behavior of the internal iteration procedure, but have very little effect on the results.

! 13253 Multiple rings of rebar within the cores of Caltrans-type sections could be specified, but they were not drawn or used for analysis. This has been resolved. This error was introduced in version 11.0.5.

! 13254 Openings drawn inside of Caltrans sections had no effect on the behavior. This has been resolved so that openings now subtract material from Caltrans sections. They are always assumed to subtract the concrete chosen for the “Core,” even if the opening overlays “Outer” or “Other” concrete. Any rebar within an opening is not removed.


! Incident Description ! 12474 The outer edges of the top flanges of nonprismatic steel girders, when modeled as areas,

were not always properly connected together where the section properties change. This occurred when a linked model was updated on top of a previously existing linked model. This has been resolved. This issue did not occur when a linked model was updated on an empty model.

! 12475 Chord-and-brace diaphragms defined with non-zero brace work-point locations did not always properly connect to the girders. This has been resolved. The diaphragms now connect to the joints at the top and bottom of the girders, and non-zero work-point locations are modeled using frame insertion-point assignments.

! 13040 Frame element skews were not always interpolated correctly for a bridge spine model, leading to incorrect bounding boxes that affected tendon connections to the deck. This has been resolved.

SAP2000 V11.0.8 2007-10-22 Page 3

! Incident Description ! 13046 Area and solid bridge models did not always connect to the bents if the deck was

superelevated and the bridge girders were specified to remain vertical in the presence of superelevation. This has been resolved.

! 13127 Area and solid bridge models were sometimes created with an incorrect width if the layout line included a curve with spirals. This has been resolved.

13132 The item Construction Scheduler appeared in the BrIM menu. This is scheduled for a future release and is not yet available. It has been removed from the menu.

! 13134 Bounding boxes used for connecting tendons to the bridge deck of a spine model with pre-cast I or U girders were not correct, often leading to errors in the tendon connection. This has been resolved.

! 13136 Bounding boxes used for connecting tendons to the bridge deck of a spine model with vertical curve had small vertical location errors, possibly leading to errors in the tendon connection where tendons were located near the top or bottom of the deck section. This has been resolved.

Analysis Enhancements Implemented

! Incident Description 13048 The SAP2000 command line has been enhanced to allow control of the 32/64-bit solver on

64-bit machines. Adding option B1 after the /R switch will force the 32-bit solver on a 64-bit machine. Adding option B2 after /R switch will force the 64-bit solver on a 64-bit machine. Omitting the B option altogether will use the setting in the model file, controlled using the command Analyze > Set Options. The verification Excel file SAP2000_Verification_1100.xls has also been enhanced to use this feature. These changes have no effect on 32-bit machines.

Results Display and Output Enhancements Implemented

! Incident Description 13098 The right-click stress-contour display has been enhanced so that the cursor snaps to the

corners and edges of the element instead of moving outside the element.


! Incident Description 13027 When displaying element stresses or forces, the numerical values shown at the mouse

cursor were for the element farthest back when one element is in front of another. This has been resolved to show results for the nearest element.

13199 Creation of animated video files showing applied wave loading did not work. This has been resolved.

SAP2000 V11.0.8 2007-10-22 Page 4


! Incident Description ! 13063 Notional loads were not being added to the default design load combinations created for

the "CAN/CSA-S16-01" code. This has been resolved. 13261 An unnecessary error message was sometimes shown for the UBC-97 design check of the

minor unbraced length for eccentrically braced frames (EBF), even if the unbraced length was acceptable. This has been resolved.

Database Tables Incidents Resolved

! Incident Description 12988 The units for temperature load were shown in the database tables as F/sec or C/sec. This

has been resolved so that now they correctly show as F or C. This has no effect on the model.

13024 A runtime error was generated when using the command Options > Database > Table and Field Names. This has been resolved.

13032 A runtime error was generated when exporting certain tables to Excel due to the use of sheet names that are not legal in Excel. This has been resolved. Table names have not been changed.

13113 Appending a table format to an existing table-formats file sometimes generated a runtime error. This has been resolved.

13191 The display of frame-hinge assignment tables when automatic frame-hinge assignments had not been regenerated caused a runtime error. This has been resolved. (Note that regeneration of automatic hinge assignments occurs when hinges are assigned or analysis is performed, but not when properties are changed.)

13220 Applying a table filter to a field that is also specified not to be printed generated a runtime error. This has been resolved.

Data Files (.SDB, .S2K, .$2K, ..XLS, .MDB) Incidents Resolved

! Incident Description 12565 Exporting Section Designer properties did not account for changes made to the labels

using the Edit > Change Labels command. This has been resolved. 13065 For Version 11.0.7 only, the three design-preference parameters that control the analysis

method for the “AISC 360-05/IBC 2006” steel code were not being imported correctly, but instead were being set to default values. This has been resolved.

13076 When importing a response-spectrum function with damping specified as zero, the damping was being changed to 5%. This has been resolved. Now damping specified as zero is imported as zero.

13079 An extraneous error message regarding table “Tendon Local Axes Assignments 2 - Advanced” was generated when importing a model with tendons. This table no longer

SAP2000 V11.0.8 2007-10-22 Page 5

! Incident Description exists, and the message has been removed. This message had no impact on the data being imported.

! 13105 Rebar that was drawn in Section Designer as single points, lines, or 2-D shapes in SAP2000 Version 10 and older versions did not come into Version 11 as rebar material, thus affecting the calculation of PMM surfaces and moment-curvature relationships. This has been resolved so that models from Version 10 and older, as well as Version 11 models that were previously brought in from Version 10 and older, should now all be handled correctly.

13133 A runtime error was sometimes generated when importing pushover-plot data. This has been resolved.

Miscellaneous Incidents Resolved

! Incident Description 13047 All verification model files have been modified so that they use the 64-bit solver when run

on 64-bit machines. Previously all these model files used the 32-bit solver on 64-bit machines except for the cable examples.

13080 CSI phone numbers have been changed in the program and in some documentation. The new voice number is 1-510-649-2200. The new fax number is 1-510-649-2299.

13246 Version number changed to 11.0.8

SAP2000 V11.0.7 2007-09-30 Page 1





User Interface and Display Enhancements Implemented

! Incident Description 12473 For the command Define > Hinge Properties, a feature was added to graphically show the

current fiber on the plot while editing the table for a user-defined fiber hinge. 12631 Increased the speed of accessing property definitions from the Define menu. 12957 The documentation available using the Help > Documentation command can now be

modified by the user. There is now a Microsoft Access database file called SapDocs.mdb, located in the Manuals subfolder where SAP2000 is installed, which you can edit. This allows you to add your own documents, such as company standards or language translations, to the documents provided with SAP2000. The menu structure displayed using the Help > Documentation command is defined by the table “Control” in the SapDocs.MDB file. This table refers to other tables you can create that list the documents available from the menu.


! Incident Description 12171 The BAG model template generated a runtime error when Windows regional settings for

certain countries are in use. This has been resolved. 12411 The Help > About SAP2000 command displayed negative values for physical memory

when the installed RAM exceeded 2GB. This has been resolved. 12447 The extruded shape plot did not account for the rotation angle of a Section Designer box

shape. This has been resolved. 12600 The manuals available from the Help > Documentation command have been updated for

the currently supported design codes, and now include the ReadMe.PDF and ReleaseNotes.PDF files.

12322 Invalid hinge assignments were permitted to frame objects having concrete general sections without rebar, leading to an error message at analysis time. This has been resolved by not permitting such invalid hinge assignments.

SAP2000 V11.0.7 2007-09-30 Page 2

! Incident Description 12534 When exporting databases tables without selecting at least one load case or analysis case, a

repeated warning message was printed for each table exported. This has been resolved to show the warning only once.

12601 A runtime error was sometimes generated when changing the display coordinate system after an analysis was run for a model in which link elements were automatically created for panel zones or distributed springs. This has been resolved.

12624 The extruded shape of nonprismatic sections was not plotted correctly for the deformed shape, even though it was plotted correctly for the undeformed shape. This has been resolved by not plotting extruded deformed shapes for any model that contains nonprismatic frame sections.

12665 The Design> Lateral Bracing command was not remembering previously assigned values. This has been resolved.

12727 The transparency setting for color display options generated a runtime error when Windows regional settings for certain countries were in use. This has been resolved.

12792 There was a formatting problem on the Locations tab in the right-click display for point object properties after having used the Analyze > Modify Undeformed Geometry command. This has been resolved.


! Incident Description 12323 Load combinations, including those generated for design, can be converted to nonlinear

static analysis cases for performing more advanced analysis and design. Using the Define > Combinations command, you can select one or more combinations to be converted. If there are any linear static analysis cases in a selected combination, a nonlinear static P-delta analysis case is created that combines them, and the nonlinear case then replaces all the linear static cases in the combination. No other analysis cases in the combination are affected.


! Incident Description 12291 The wavelength for user-defined wave loads was not being calculated, leading to an error

message. This has been resolved. 12450 Default frame section, area section, or solid properties were not being created when needed

for objects created using the Edit > Extrude command. This could result in the object having no properties and therefore being excluded from analysis. This has been resolved.

! 12461 The major bending properties (I33, S33, Z33, R33) were not correctly calculated for built-up steel sections. This has been resolved.

12484 Same as Incident 12450

SAP2000 V11.0.7 2007-09-30 Page 3

! Incident Description 12546 Assigning a Caltrans hinge to a Section Designer section sometimes failed with an error

message. This has been resolved. The assignment is now permitted for any Section Designer section for which a moment-curvature relationship can be displayed in Section Designer.

12554 A runtime error was generated when trying to automatically re-label area objects. This has been resolved.

12587 The yield strength calculated for concrete V3 hinges (minor direction) was using the shear steel area for the V2 direction (major direction). This has been resolved.

12644 Same as Incident 12554 12911 Roundoff errors were present in the calculation of the rectangular Mander model stress-

strain curve for display for nonlinear concrete materials. This was a display issue only and does not affect results. This has been resolved.

! 12934 For the NBCC 2005 auto seismic loads, coefficients Fa and Fv were not always being computed correctly. This has been resolved.


! Incident Description 11971 Editing the prestress tendon layout for a Caltrans section sometimes caused a runtime

error. This has been resolved 12196 Editing the Mander material definition for a polygon sometimes caused a runtime error.

This has been resolved. 12225 A circular section with Mander material could not be converted to a polygon. This has

been resolved. 12293 The axial force limits given on the moment-curvature form did not properly account for

actual rebar yield stress. This has a minor effect on the axial force values for which Caltrans PMM hinges are generated, but does not affect the actual moment-curvature relationships. This has been resolved.

12294 When calculating the moment-curvature relationship for a Caltrans sections, the concrete removed at the location of the rebar was assumed to be unconfined rather than confined. The effect is very small. This has been resolved.

! 12307 The export and import of Section Designer sections using database tables or the .$2K file had a number of problems causing loss of data. This has been resolved.

! 12347 The export and import of Section Designer sections using database tables or the .$2K file did not properly account for multiple cores in Caltrans Sections. This has been resolved.

12458 An error sometimes prevented the drawing the moment-curvature plot for a solid circular or rectangular shape. This has been resolved.

12468 The Mander model stress-strain curve did not always update automatically for display when the rebar size was changed for a circular or rectangular concrete shape. This effect was temporary and would correct itself before analysis. This has been resolved.

12470 When calculating the moment-curvature relationship for a Caltrans sections, concrete was not removed at the location of the tendon. The effect is small. This has been resolved.

12471 A runtime error sometimes occurred when plotting the Caltrans idealized moment-curvature relationship at zero axial force. This has been resolved.

SAP2000 V11.0.7 2007-09-30 Page 4

! Incident Description 12508 The moment-curvature relationship was sometimes incorrect when tendons were present

and the units used to display the curve are different from the base units of the model. This has been resolved.

12509 Same as Incident 12458 12576 Same as Incident 12458 12726 Caltrans wire reinforcement sometimes generated zero wire diameter and area. This has

been resolved. 12812 Parameters in the properties grid form for solid circular and rectangular shapes sometimes

were shown in the wrong location. This was a visual effect only. This has been resolved. 12821 Mirror and radial replication did not function correctly for nonsymmetrical shapes. This

has been resolved for radial replication. Mirror replication will be resolved in a future release.

12870 Replication of line rebar did not function correctly. This has been resolved.


! Incident Description 12315 Diaphragms were not being generated for some curved bridges when the auto-merge

tolerance was small. This has been resolved. 12357 Connections between the superstructure and substructure were not always correct when the

superstructure was offset transversely from the layout line. This has been resolved. 12383 A bridge analysis model could not be created when there are more tendon section

properties than frame section properties. This has been resolved. 12634 The left and right overhang distances were transposed and not being input correctly for the

advanced concrete box girder bridge deck section. This has been resolved. 12659 The local axes of the link elements used to model bridge in-span hinge bearings and

restrainers were aligned with the global axes rather than with the bridge layout line. This has been resolved.

12904 Constraints that tie the girder to the deck were sometimes not being generated at the first station after the start abutment for steel, precast I, and precast U girder deck sections when modeled as area objects. This has been resolved.

Analysis Incidents Resolved

! Incident Description ! 12989 When using the auto-shift option, the eigen solver sometimes stopped before finding all the

requested modes. This has been resolved.

SAP2000 V11.0.7 2007-09-30 Page 5


! Incident Description 12355 Correspondence results for reactions under moving-load analysis were not available. This

has been resolved. 12382 Shell top and bottom stresses were displayed for the wrong layer if the layers were not

ordered from bottom to top. This has been resolved. 12531 The max/min values displayed on the status bar for response-spectrum principal stresses

were not zero even though the plotted stresses were zero. This has been resolved. 12535 When displaying the deformed shape contours, the max/min displacement values displayed

in the status bar were not updated if the units were changed. This has been resolved. 12688 A runtime error sometimes occurred when selecting a fiber hinge to view using the Display

> Hinge Results command. This has been resolved. 12715 The display of bridge forces and stresses for multi-stepped linear static analysis cases did

not allow the choice of envelope or step, and showed a mixture of minimum and maximum envelope results. This has been resolved.

Design Enhancements Implemented

! Incident Description 12397 The distinction between warning and error messages shown in the steel and cold-formed

steel design details has been clarified. A warning indicates an issue needing the attention of the engineer. An error indicates failure of the design.

12399 Code citations are now printed with error and warning messages for the “CAN/CSA-S16-01” steel design code.

12713 New design combination types have been added that include live load plus companion wind load as needed for Canadian design codes.

12747 Added new display options for design data: Identify all steel P-M failure Identify all steel shear failure Identify all steel failures

12874 Program-calculated concrete design overwrite values are now available in the database tables and API functions. The values determined for the controlling design combination are given. Previously, default values were given.

12875 Program-calculated steel design overwrite values are now available in the database tables and API functions. The values determined for the controlling design combination are given. Previously, default values were given.

SAP2000 V11.0.7 2007-09-30 Page 6

! Incident Description 12876 The definition of the analysis method in the Design Overwrites for the “AISC 360-05/IBC

2006” steel code has been changed from one parameter to three parameters. This follows the approach described in the code specifications. These are:

Analysis Method – Direct Analysis, Effective Length, or Limited 1st Order Second-Order Method (for Direct Analysis and Effective Length methods) –

General 2nd Order or Amplified 1st Order Stiffness Reduction Method (only for Direct Analysis method) – Tau-b Variable,

Tau-b Fixed, or No Reduction ! 12877 If the Direct Analysis Method (DAM) is selected for “AISC 360-05/IBC 2006”, the

program now automatically modifies the structural stiffness based on Tau-b, which can either be fixed or variable. Previously this modification was not automatically applied. If you open a model from an older version in which you had manually applied frame property modifiers for this purpose, you should either remove these modifiers or select “No Modification” under the Design Preferences for DAM.

12878 Added reporting of the additive components of the interaction equations for the “AISC 360-05/IBC 2006” code.

12879 Added checking of the interaction equations involving torsion for closed sections for the “AISC 360-05/IBC 2006” code.

12882 The special combination name and the associated design-code section numbers are now reported when a special combination controls the design for the “AISC 360-05/IBC 2006” and “CAN/CSA-S16-01” steel codes.

12883 Design details and calculations are now produced for the “AISC 360-05/IBC 2006” and “CAN/CSA-S16-01” steel design codes even when the design fails. Previously details and calculations were only produced in the case of warnings, not errors.

12886 Under the Design Preferences for the “AISC 360-05/IBC 2006” code, the default value for Reduce HSS Thickness was changed from Yes to No, since the section properties are usually given with the thickness already reduced.

12919 The “AISC 360-05/IBC2006” design manual, while still in draft form, has been updated. ! 12942 A design-decision-parameters output table has been added for the "AISC 360-05/IBC

2006" steel design code. ! 12943 The capability has been added to design EBF columns based on the maximum possible

axial force that can be developed from the shear capacities in all the links above that column. This affects the “AISC 360-05/IBC 2006” and “CAN/CSA-S16-01” design codes.

! 12944 The capability has been added to show errors when the EBF link rotation exceeds its required limit and/or when the link length is smaller than the required limit. This affects the “AISC 360-05/IBC 2006” design code.

! 12945 The capability has been added to show errors when the PMM ratio in EBF columns exceeds its required limit for special load combinations. This affects the “CAN/CSA-S16-01” design code. The limit is 0.85 for lower stories, and 0.65 for the upper stories, defined as those all or partially within 8 m (26 ft) from the top.

12955 Concrete code “CSA A23.3-04” now uses the parameters Rd and Ro taken from the auto-seismic load definition. Previously, default values were assumed.

12984 A practical how-to guide for using the Direct Analysis Method (DAM) of the “AISC 360-05/IBC 2006” design code has been added to the documentation in draft form.

SAP2000 V11.0.7 2007-09-30 Page 7

! Incident Description 13005 For a given steel member, when lateral bracing has been assigned using the Design >

Lateral Bracing command, and Design Overwrites are also specified for the Unbraced Length Ratio in either the minor bending direction or for lateral torsional buckling, the Design Overwrites values take precedence. Previously the assigned lateral bracing controlled.


! Incident Description 12398 When steel design of a member cannot proceed because of P-delta instability, the program

reported an internal error. This has been resolved by instead reporting that design cannot proceed.

12439 Documentation of the “AISC LRFD-99” steel design code previously stated that the resistance factor for tension fracture was 0.7. It has been changed to 0.75. This is only a documentation issue, as the value used in the program was always 0.75.

! 12679 Shear design results for the “CAN/CSA A23.3-04” concrete code were erratic. This has been resolved.

! 12689 The cover specified for concrete column frame sections is to the center of the longitudinal rebar, but it was being treated as the clear cover to the outside of confinement steel for shear and torsional design. This has been resolved. Design results may change from previous versions. They were previously conservative.

12873 The concrete shear-area calculation has been improved for the “CSA A23.3-04” and “CSA-A23.3-94” codes. This gives better shear design and may create a minor change in design results.

12880 The calculation of Cw and J has been improved for unsymmetrical I shapes. This may create a minor change in design results.

12881 A runtime error could occur during design of members for which the lateral bracing had been assigned as uniform for the entire length. This has been resolved.

! 12884 The flexural capacity for the LTB limit state of a flat rectangular section using the “AISC 360-05/IBC 2006” steel design code was incorrect. This has been resolved.

! 12885 The B1 factor calculated for the “AISC 360-05/IBC 2006” steel design code was incorrect, and could be less than 1.0. This has been resolved.

12954 The notional load factor was removed from the steel Design Preferences form since it was not being used. Scaling of the notional loads should be done in the definition of the notional load cases themselves.

12973 For steel frame design, the deflection value reported for SDL+LL actually only included the SDL deflection. However, the design ratios were being correctly calculated and reported. This has been resolved.

12983 The moments used as the basis for Cb calculation were not always correct when the critical moment occurs at assigned brace points. The error is small and conservative. This has been resolved.

SAP2000 V11.0.7 2007-09-30 Page 8

! Incident Description ! 13007 For the design of beams under seismic loading in ductile moment-resisting frames, the

unbraced length was being checked in the major bending direction. This is unnecessary and is overconservative. This affected the “AISC 360-05/IBC2006”, “AISC LRFD-01”, “AISC LRFD-99”, and “CAN/CSA-S16-01” design codes. This has been resolved. The check for the minor bending direction and for lateral torsional buckling was and still is correct.

Data Files (.SDB, .S2K, .$2K, ..XLS, .MDB) Incidents Resolved

! Incident Description 12265 An extraneous warning message was printed when importing database tables containing

NBCC response-spectrum functions. This had no effect on results. This has been resolved. 12328 Design group data was not being saved to the .$2K file nor was it available in the database

tables. This has been resolved by adding selected-for-design flags to the group definition table.

12344 A runtime error sometimes occurred when importing bridge variations from database tables or the .$2K file. This has been resolved.

12374 Circular Mander material data could not be imported properly from version 10 files using database tables or the .$2K file. This has been resolved.

12683 Rebar materials were not correctly being created in Version 11 when concrete materials are brought in from Version 9 models, resulting in runtime errors. This has been resolved.

Application Programming Interface (API) Enhancements Implemented

! Incident Description 12506 The speed of adding objects by coordinate when using API functions has been increased.

Application Programming Interface (API) Incidents Resolved

! Incident Description 12729 Indexing did not work correctly for the API functions GetLoadForce and GetLoadDispl for

point objects and point elements. This has been resolved.

SAP2000 V11.0.7 2007-09-30 Page 9

External Import/Export Enhancements Implemented

! Incident Description 12090 The import of the STAAD Repeat Load command has been improved. For each STAAD

load case encountered, a corresponding SAP2000 load case called PattSTD# and a corresponding SAP2000 analysis case called CaseSTD# are created, where # is the STAAD load case number. The created analysis case is linear static. If a STAAD load case contains Repeat Load commands, these are implemented by applying the scaled load cases in the analysis case. Multiple Repeat Load commands are additive. When an analysis case contains Repeat Loads, it is converted to a nonlinear static analysis case with P-delta, and a combination called CombSTD# is created that references it for use in design.

12212 Self-weight of shells in STAAD models is now imported using the SAP2000 gravity load assignment.

12424 Same as Incident 12090 12425 Same as Incident 12212 12667 The import of frame offsets in STAAD models has been implemented as frame joint

offsets, to which they are equivalent. They are fully rigid and without material properties or loads.

12668 The import of the STAAD Structure Type command has been implemented by setting the appropriate global available degrees of freedom in the SAP2000 model.

12914 Improved error handling has been implemented for importing STAAD models. Whenever possible, the importing of data will continue if incorrect or unrecognized data is encountered, and a warning will be written to the log file. Previously the import was terminated.

External Import/Export Incidents Resolved

! Incident Description 12188 A runtime error sometimes occurred when importing STAAD Area Load commands. This

has been resolved by not importing this data, since there is no direct SAP2000 equivalent. A warning message is generated.

12485 A runtime error sometimes occurred when importing section properties in STAAD files. This has been resolved.

12459 The direction of restraints in STAAD models with Z-up was not correctly imported. This has been resolved.

12551 Point loads on frame elements in imported STAAD models were located at the start end of the element rather than at the middle when no location was specified. This has been resolved.

12962 The importing of certain STAAD models stopped partway through the file. This has been resolved.

SAP2000 V11.0.7 2007-09-30 Page 10

Miscellaneous Incidents Resolved

! Incident Description 12890 Version number changed to 11.0.7

SAP2000 V11.0.6 2007-07-16 Page 1





Incidents Resolved: Bridge Modeler

! Incident Description ! 12195 Diaphragms, hinges, and discretization points were not being created in curved bridges.

This problem was introduced in version 11.0.5 and does not affect any previous versions

Incidents Resolved: Results Display and Output

! Incident Description 12181 Stress averaging was performed only on elements shown in the current view or previous

views. Now stress averaging is performed over all elements in the model, regardless of what is shown in the view

12198 The automatic scale factor for plotting the deformed shape in OpenGL was based on inches rather than the current length units. This only affects the scale of plotting. The numerical values shown were always correct

Incidents Resolved: Analysis

! Incident Description 12200 The advanced solver did not detect certain instabilities. This problem was introduced in

version 11.0.5 and does not affect any previous versions of V11

Incidents Resolved: Design

! Incident Description 12199 Header text in design details for Chinese steel design check referred to “K” instead of

“Mue”. This is a cosmetic issue only, and has no effect on results 12208 The button for tabular display of complete steel-design details did not function

SAP2000 V11.0.5 2007-07-10 Page 1




Changes from V11.0.4/1 (2007-05-18) to V11.0.5 (2007-07-10)

Enhancements Implemented

! Incident Description ! 11387 Canadian code CAN/CSA-S16-01 design check has been added. Seismic provisions have

been included at an initial level, similar to how they are implemented for AISC 2005 11451 Basic geometry and connectivity can be exported to CSI Perform-3D ! 11488 A warning message is now printed when the advanced solver detects instabilities. A single

warning message is printed. For more detailed information, you can re-run the model with the standard solver, or use eigen-analysis to show unstable modes

! 11517 Canadian NBCC 2005 wind loads, seismic loads, and response-spectrum functions have been added

11708 A warning message is now printed if an imported CIS/2 file has no usable data 11724 A new Open API function was added for the changing of point coordinates that allows an

option to not refresh the view, for speed 11887 The order of the columns displayed for the PMM surface in Section Designer has been

changed from P-M3-M2 to P-M2-M3 so that they can be copied and pasted into the frame hinge form. However, the definition of the moment angle is still different between Section Designer and the frame hinge

11920 The default for the auto-shift option in eigen-type modal analysis cases has been changed to “On” (it was “Off”). This improves the speed for unstable models

12014 Design tables are now automatically exported after analysis and design if they are requested in the named set chosen using the command Analyze > Set Analysis Options

! 12116 A warning message is now printed when zeroes are detected on the diagonal by the advanced solver during assembly. A single warning message is printed and each zero is changed to a small positive number. For more detailed information, you can re-run the model with the standard solver

Incidents Resolved: Data Files (.SDB, .S2K, .$2K, ..XLS, .MDB)

! Incident Description 11413 Applying a coordinate rotation while importing an addition to a model gave incorrect

geometry

SAP2000 V11.0.5 2007-07-10 Page 2

! Incident Description 11429 Saving a model with more tendon sections than frame sections sometimes failed 11504 Surface pressure loads were sometimes not saved in the automatic .$2K model text file 11540 The program crashed when opening a specific model with corrupted grids 11626 Concrete design combos were not properly selected for design when imported 11646 Materials with zero stress-strain curves from older models were causing analysis to fail.

Now they are ignored unless the material is used for fiber hinge properties 12066 Section Designer data was not carried over from some V10 files into V11

Incidents Resolved: User Interface and Display

! Incident Description 11308 The extrude view of nonprismatic sections always showed constant segments. Now the

display shows a tapered rectangular bounding box if the section changes over a segment. For constant segments, the actual shape is shown.

11486 Contour plots of area-object uniform loads did not work 11520 Program crashed when reducing the number of PMM curves in a hinge property that had

been changed from symmetry to no symmetry 11541 Plotting of extruded view and bounding box was not correct for some unsymmetrical

frame sections 11551 The option to show reinforcement in OpenGL plots has been removed since this feature is

not actually available 11552 Plotting of extruded view and bounding box was not available for cold-formed frame

sections 11609 The bounding box did not plot correctly for shell (area) objects with joint offsets. This was

a plotting error only, the actual bounding box was always correct 11645 Grid bubble always plots at End even when Start is chosen 11737 Clicking OK on the Tips form sometimes caused the SAP2000 screen to move to the

background 11741 The move command was too slow for a few objects in a large model 11752 Zooming while drawing lines or areas sometimes canceled the drawing operation 11973 Frame section properties with blanks in the name could not be picked from a list 12016 Names could not be changed for a rebar created with Quick Material option 12045 Very narrow triangular objects plotted too large when selected 12127 In rare cases the program crashed when selecting objects

Incidents Resolved: Modeling

! Incident Description ! 11352 The general mesher sometimes failed to create a mesh 11483 Spherical models generated from the templates or by extrusion of curved lines sometimes

created triangular elements where quadrilaterals were needed 11532 Using the re-shaper tool sometimes created duplicate points rather than merging points

created at the same location

SAP2000 V11.0.5 2007-07-10 Page 3

! Incident Description ! 11538 The command Assign > Area Loads > Uniform to Frame did not always produce the

correct loads if there was an open edge on the area object, i.e., an edge without a frame element. Models having these types of loads should be checked with the new version 11.0.5

11546 Assigning frame objects to lanes sometimes added them to lanes not chosen 11547 Conversion of temperature loads between Fahrenheit to Celsius units was adding or

subtracting 32 ºF. Now the conversion is based only on the ratio of 9 ºF to 5 ºC 11620 Tendon prestress anchor-slip forces were not correctly calculated if the slip length was

greater than the length of the tendon 11627 Diaphragm forces specified for user-defined auto-lateral wind loads were not being saved ! 11655 The general mesher sometimes crashed ! 11665 For frame hinges specified using moment-curvature relationships scaled by the program-

determined yield curvature, that yield curvature was calculated as the FEMA356 yield rotation divided by an assumed hinge length. For steel hinges this gave My/(6EI). Now it is calculated as My/(EI), where My is the yield moment. This change affects ductility only, not the moment at which yield occurs

11746 The auto-mesher created area objects with reversed local-3 axis if the meshed area was concave

11933 Subdividing and meshing of curved-line objects with points and intersecting lines was using the straight line connecting the ends rather than using the curve. This feature has been disabled, and will be corrected for a future release

11958 Pipe template was creating models with missing triangular elements 11959 Replication of curved frame elements was not working 12007 Property modifiers for mass and weight did not work for Section Designer sections 12026 The structure height used for calculating seismic code periods could be slightly in error.

The top and bottom elevations were rounded to the nearest length units, so the effect is most significant for meter units and shorter structures.

12064 When defining reinforcement for rectangular and circular concrete frame sections, the form text for cover said “Clear cover to outside of confinement”. It should have said “Cover to rebar center”, since this is what was actually being used. The text has been corrected. There is no change in the behavior of the program.

Incidents Resolved: Section Designer

! Incident Description 11545 Trying to edit the coordinates of a line showed material property options instead 11788 The mesh used to calculate shear area and torsional was sometimes incorrect for narrow

Caltrans sections oriented vertically ! 11982 Different moment-curvature and PMM results were obtained for equivalent shapes

constructed using circular, rectangular, or polygonal objects.

SAP2000 V11.0.5 2007-07-10 Page 4

Incidents Resolved: Bridge Modeler

! Incident Description 11338 The links connecting bents to nonprismatic girders in an area (shell) model connected to

the wrong vertical location on the girder 11432 A hinge could sometimes not be placed in a span with significant skew 11466 The program crashed creating area (shell) models of T-beam superstructures with no

interior girders 11548 The eccentricities for lanes defined from frames did not plot correctly when the North

arrow was not aligned with the global Y direction

Incidents Resolved: Analysis

! Incident Description ! 11487 Superstructure moments and stresses shown using the command Bridge > Display Bridge

Forces/Stresses did not correctly account for the 18 kip rider for H-44L and HS-44L vehicles, nor for any of the loads in the HL-93S or HL-93LB vehicles. The previous results using these vehicles could have been unconservative for negative-moment regions, and should be re-run using the new version 11.0.5

11543 The option to save final step only for staged construction analysis did not work. Verification Example 1-027 has been changed to account for this correction; the verification results are not affected

11601 The analysis model could not always be created if the number of functions was greater than the number of load cases

! 11688 In rare cases staged-construction loading was applied to the entire structure present in a stage rather than to the selected group. This error was rare and usually conservative

! 12017 The option to turn off time-dependent behavior under staged construction did not work. Time-dependent behavior was always being considered if the stages had duration and the materials were time-dependent. Check this option for old models that you open in v11.0.5

Incidents Resolved: Results Display and Output

! Incident Description 11395 Right-click on frame-force diagram for a multi-step static case sometimes crashed 11404 Right-click for stresses on Plane and Asolid elements did not work. Now works for

classical graphics. OpenGL will be fixed for a future release 11433 Contour plots of shell stresses or resultants reported that the max/min values were non-

zero when the contour results were correctly plotted as all zero 11435 User selected contour plot ranges did not always work 11436 The deformed shape of Plane and Asolid elements did not always plot 11533 Quadrilateral-type section cuts produced zero results at certain coordinate locations 11544 The deformed shapes that were automatically plotted after an analysis was run were the

same in two windows even if two different cases were chosen 11676 For plotting FEMA 356 or FEMA 440 pushover curves, there was an error in the program-

calculated value of C0

SAP2000 V11.0.5 2007-07-10 Page 5

! Incident Description 11787 Pushover curve tables could not be generated from the pushover curve form when the

analysis case name contained a decimal point character 11850 Custom Report Writer would hang when creating HTML reports with pictures 11870 The Add Tables button under Modify/Show in Custom Report Writer did not work. This

option has been removed as it was not intended to be used. 11970 Database table “Element Joint Forces – Areas” could not be created for Plane and Asolid

elements

Incidents Resolved: Design

! Incident Description 11398 The program crashed trying to design built-up steel sections. This feature is not available

and has been disabled 11570 Units conversion was not correct for the display only of the forces and moments reported

in the AISC360-05 Detail Design Info. The design result were correct ! 11602 Material overwrites were accounted for in analysis but not in design. Now material

overwrites are accounted for in design if the type of material is not changed (e.g., steel overwriting steel). Changing the type of material is not supported in design

11642 AISC360-05 design warning on slenderness ratio referenced code provision B7 rather than E2

11648 Design results for a channel section using AISC360-05 were incorrect when lateral torsional buckling controls

11768 The Italian steel design check sometimes underestimated the equivalent moment used for ETB and PMM calculations with sidesway. This error was most significant when the frame member had only a few output stations assigned

11816 Design sometimes crashed when auto-lateral wave load cases were defined ! 11829 The PMM surface generated for circular and rectangular sections created in Section

Designer was not correct. This affects concrete design checks. The error is bounded, conservative, and usually small

11907 The calculated moment capacity for a channel section under AISC360-05 did not match hand-calculated values

11908 The slenderness ratio calculated for L-shaped sections was too large for the Chinese code check

12009 Beam/column capacity ratios were sometimes not displayed for the top story 12015 Program-calculated design overwrites were not all available using the Open API. This has

been fixed for steel design 12038 The algorithm for tracing un-braced length sometimes failed for very long series of

elements 12043 Same as 11829 12048 The radius of gyration for the compressive zone about the minor axis was in error for the

slender double channel and the slender I shape. The steel codes affected are ASD89, ASD01, API-ASD, and UBS-ASD. The error was conservative and minor for practical design

SAP2000 V11.0.5 2007-07-10 Page 6

Incidents Resolved: External Import/Export

! Incident Description 11376 SDNF import was not functioning 11405 DXF export did not correctly handle polygons with more than four sides 11431 DXF and DWG import of solids did not work. DWG import has been fixed so that box,

wedge, pyramid, frustum, and extruded 3DFaces (3 and 4 nodes only) can be imported. DXF solids cannot be imported due to the proprietary nature of the file

11672 CIS/2 export was adding extra blanks inside story level names 12090 STAAD import was limited to 100 load cases and combinations, it did not convert the

direction of spring properties from Y up to Z up, and had some errors in unit conversion of distributed frame loading

Incidents Resolved: Miscellaneous

! Incident Description 11757 Internal change made for locating dependent files during development process 11814 The program crashed trying to run on unsupported processors (those without SSE2

support). An error message is now provided, except on the Windows 2000 operating system which is unable to check the processor

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