Service Pack and Hot Fixes are available for Download from here

CAESAR II 2017, Version 9.00.00

Technical Changes


  • Please be mindful of the following technical change for this release:
  • Disabled the Search tab in the Online Help due to an issue when your CAESAR II installation uses OpenGL drivers. You can change the Graphics Settings >Miscellaneous Options > Video Driver to Direct 3D in the CAESAR II Configuration Editor. If you use Direct 3D drivers, you can download a copy of the Help with the Searchtab enabled from Smart Support.

 Added Support for the Latest Code Standards


  • Updated the software to the latest ASME B31.4 code standards, which included the ASME B31.42009, B31.4 2012, and B31.4 2016 code editions.
  • The update included the following changes and improvements:
  • Updated materials applicable to the B31.4 code in the Material Database Editor.
  • Updated the Allowable Stress tab in the Piping Input module by including anAllowable Stress Indicator option for B31.4 and B31.4 Ch XI, and Design Factor andHoop Stress options for B31.4 Ch IX.
  • Deprecated the B31.11 piping code, which is now included in B31.4 main code standard.
  • Provided options for CAESAR II to automatically determine the restrained/unrestrainedstate of the pipe elements, or for the user to specify the state. The software defaults toautomatically determining the state.
  • Added the evaluation of the creep condition using EN-13480 Creep code standards.

 The update included the following improvements:


  • Expanded the Material Database Editor to support EN-13480 Creep by adding materialproperties for 200k hours, in addition to existing properties for 100k hours. Refer to theTechnical Discussion on evaluating creep conditions in the User’s Guide for moreinformation.
  • Added a new Creep (CRP) stress type in the Static Analysis – Load Case Editor. Thesoftware does not include the CRP stress type when it recommends load cases.
  • Updated the software to support the June 2015 edition of Z662 and Z662 Chapter 11, theCanadian code for oil and gas pipelines.
  • Enhanced the software to support the 5th Edition of API-560, February 2016, the equipment codefor fired heaters.

 Enhanced Piping Input Functionality

  • Added an option to select a new user-defined Custom type for nozzle flexibilities, in addition to the existing Nozzle Flex types of WRC 297, API 650, and PD 5500. The Custom nozzle type includes user-defined nozzle stiffness values for Axial (radial force), In-Plane Bending, Out-of- Plane Bending, and Torsional (moment). Many improvements have also been made to the Nozzles auxiliary panel layouts to improve usability.
  • Enhanced the existing right-click context menu options for restraints from within the graphics view. The Restraint > Insert Restraint option lets you right-click an element to break and insert restraints in one action, or you can or insert restraints at existing nodes. From the new Insert Restraint dialog, you can also define restraint options, such as distance from nodes.
  • Improved the Break at Element dialog box (accessed by selecting Model > Break or right-clicking and selecting Element > Break Element). The software now automatically populates the Insert Single Node option to the halfway-point node number and distance. If there is not an available halfway-point node number, the software defaults the to the next available node number.
  • The Displacements grid displays free and fixed designations to eliminate confusion. The Fix DOFs option applies the fixed value of 0.0 to any undefined (free) degree of freedom.

 Streamlined Load Case Editing/Creation


  • Updated the Static Analysis – Load Case Editor by adding the ability to copy and paste complete load cases.
  • Enhanced the editor to allow the selection of multiple load cases in the List view and retain the selection when you switch to Group Edit view.
  • Added a new Creep (CRP) stress type in the Static Analysis – Load Case Editor.

 Improved 3D Model/Graphics

  • Node numbers display in front of piping elements when you use Options > Node Numbers and rotate the graphics. Previously, the node numbers rotated with the elements and were sometimes obscured by piping elements.
  • Symbols for LIM restraints (axial limit stops) display on the outside of the pipe and remain visible when you use Options > Restraints.
  • Added a symbol for zero-length expansion joints on the model.
  • Displacements on CNodes display graphically as arrows with Options > Displacements.
  • Displacements, rotations, forces, and moments display graphically as arrows (vectors) when you select Options > Displacements or Options > Forces. You can also change the default colors and arrow sizes in the Graphics Settings of the Configuration Editor or by using Plot Properties.

 Updated User Interface


  • Added a news channel on the CAESAR II main window, where you can find out product version information, upcoming events, product training opportunities, and future webinars.
  • Enhanced the Distance dialog box for better usability. When you choose Origin and Selected Element as your Measure Method, the Distance dialog box retains the selected Measure Method option for the duration of your use of the Distance dialog box.

 Enhanced Integration/Data Export


  • Combined the individual flexible nozzle input export options into a single Flexible Nozzles option on the Data Export Wizard to improve usability.
  • Improved integration with Smart 3D using the Data Export Wizard (ODBC) by adding a new LCASE_NAME column to files exported to Microsoft Access through the Data Export Wizard. When you export to .mdb format, you can now see the Load Case Name (LCASE_NAME column) in applicable exported files for quick identification of your load cases.
  • Improved the CAESAR II Translate DLL to acquire more data from FEATools. In addition, enhanced material management and data verification to facilitate the ability of FEATools v 3.0 to control CAESAR II execution externally.

 Upgraded User Documentation/Help


  • Updated Restraints in the Piping Input Reference section of the CAESAR II User's Guide. Each restraint type includes a graphic example to assist identification.
  • Improved the Global Coordinates section of the CAESAR II User's Guide. The user's guide now references local coordinates as a, b, c to reduce confusion between local and global coordinates.
  • Added navigation information, such as the location on ribbons and menus, to command topics to aid discovery when browsing the help.
  • Updated the Hinged Joint section of the CAESAR II Application Guide. Updated the Hinged Joint Model graphic to include all of the necessary components to model a hinged joint.
  • Updated portions of the user documentation to the latest Intergraph PP&M standards for formats, which included adding more white space and indentation for field property formats. (DI-TX-13824, DI-TX-15821)
  • Converted the CAESAR II 2017 readme document to .pdf format to comply with the latest Intergraph PP&M standards.
  • Updated the software to call the main CAESAR II Help file (C2ug.chm) when you press F1 in Equipment and Auxiliary modules. Previously, these modules displayed in a text-based help dialog box.


CAESAR II 2016 Hot Fix 4 Revisions and Changes, Version


  • Fixed an issue regarding import data on the EJMA Expansion Joint Rating dialog box. Previously, when you clicked Get Data From Input File on the Geometry tab of the EJMA Expansion Joint Rating dialog box, the software populated data for all fields except Effective Diameter. The software now imports all the necessary data from the input file. (DM-TX-16597)
  • Fixed an issue in which report data did not display on the Restraint Summary report in the Static Output Processor. Previously, if you performed a Harmonic dynamic analysis, the Restraint Summary report did not contain any harmonics summary data. The issue is now resolved. (TR-TX-15609)
  • Fixed an issue in which the software truncated load type multipliers in the Static Analysis - Load Case Editor to integer values in some situations. For example, in the load case 0.1W + 0.2T1 + P1, the software converted the load case to 0.1W + 0T1 + P1. This caused the results to vary greatly from user expectations. The software no longer truncates or changes multiplier values in load cases. (TR-TX-16526)
  • Fixed an issue where the software displayed an incorrect prompt regarding running a version of CAESAR II that was released more than two years ago. This prompt displayed in CAESAR II 2016 (version 8.0), which is less than two years old. The prompt was removed. (TR-TX-16810)
  • Resolved a licensing issue when you launched NozzlePRO from the CAESAR II main menu. The software successfully opened, but later put the user into demo mode. If you have an Intergraph CAS NozzlePRO license and click NozzlePRO in the main menu, the software now opens the third-party software and you have full capabilities in the program. (TR-TX-16817)
  • Disabled the Search tab in the online help due to an issue that causes the software to unexpectedly quit. This issue will be researched and the Search tab re-enabled when the problem has been resolved.

CAESAR II 2016, Version 8.00.00

Added Support for the Latest Code Standards

Piping Codes

  •  ASME B31.1, 2014 Edition (CR-TX-10720, DI-TX-13119)

  •  ASME B31.3 2014 Edition (CR-TX-10721), including:

    •  Addressed the code standard requirement to consider sustained (and occasional) stress in all support conditions. New static load cases, called alternate sustained or alternate occasional cases, depend upon the support configuration of a converged operating condition. This condition addresses systems where non-linear supports are active in some operating conditions and inactive in others. The alternate support condition is indicated using the new Alternate SUS/OCC check box in the Static Analysis - Load Case Editor

    •  Added two new load case templates (.tpl files) for use when recommending load cases, which include support for the alternate SUS/OCC load cases

    •  Updated materials to support the latest code edition

    •  Moved the B31.3 Implement Appendix P configuration setting to SIFs and Stresses > Legacy Settings as the B31.3 code standard no longer refers to Appendix P

    •  Added appropriate warnings and notes to the error checking module and the output reports to account for the code updates

  •  ASME B31.8, 2014 Edition, including a small revision to the biaxial state of stress formula (Sc), according to code Paragraph 833.4. You can find this formula in the CAESAR II Quick Reference Guide. (CR-TX-11871, DI-TX-13125, DI-TX-13651)

  •  ASME B31.9, 2014 Edition (CR-TX-10723, DI-TX-13441)

Wind and Seismic Codes

  •  National Building Code of Canada (NBC) Seismic and Wind Codes, 2010 Edition

  •  ASCE 7 2010 Edition and IBC 2012 Edition wind code standards, including a change in the wind load reduction factor

Equipment Codes

  •  API 560, 4th Edition (CR-TX-11947, CR-TX-13176)

  •  API 610, 11th Edition (CR-TX-792, CR-TX-13178)

  •  API 617, 8th Edition (CR-TX-4365, CR-TX-4366)

  •  API 661, 7th Edition (CR-TX-11949, CR-TX-13177)

Streamlined Load Case Editing/Creation

  •  Redesigned the Static Analysis - Load Case Editor to improve the user's experience and add more robust functionality when creating and revising load cases for analysis. Includes the following improvements:

    •  Group Edit view - select and change values on multiple load cases all at once.

    •  Enhanced List view – Easier scrolling and viewing options, as well as filtering on columns, drag-and-drop capabilities, and easier manipulation of load cases

    •  Updated user documentation

Expedited Access to Finite Element Analysis Tools

  •  Added easier access to third-party tools for better modeling and evaluation from the CAESAR II main menu, to generate more accurate SIFs and K factors. Compare multiple file results, assess the sensitivity of your model elements, and evaluate nozzle/branch connections with NozzlePRO.

Expanded Hanger Data

  •  Added hanger data for the following hanger manufacturers: Hesterberg, Unison, Spring Supports Mfg. Co., Senior, and Wookwang

  •  Revised the listing of the manufacturer, Flexider, to its new name, CASTIM 2000

Enhanced Piping Input Usability

  •  Improved the Classic Piping Input to display a Pressure 3 value on the interface. This allows you to input three sets of temperature and pressure values without having to open a separate dialog box.

  •  New single and multiple element-level right-click graphics menus containing many frequently-used element commands and block (group) operations

Improved Distance Measuring

  •  Minimize mode for measuring lets you perform multiple measurements without the Distance dialog box blocking any of the model

  •  Measure multiple distances (using CTRL+click) and see all of your measurements at once.

  •  Redesigned and more user-friendly dialog box

  •  Better snapping in the Line Drawing (single line) mode and ability to snap from piping elements to imported DWG pipe objects

  •  Larger default font size setting on distance measurements for ease of reading

Enhanced S3D/SPR (VUE) Model Imports

  •  Improved rotation capabilities for imports with a more user-friendly interface

  •  Added functionality to include zipped VUE (ZVF) or stitched VUE (SVF) files in a CAESAR II model

Added Filter/View Capabilities on 3D Models

  •  Filter by Line Numbers in the Static Output Processor 3D model

  •  View only node names on the 3D model by selecting a new Names Only option in Piping Input, C2Isogen, and the Static Output Processor modules

Upgraded User Documentation

  •  Added edition dates and information for piping, equipment, and wind/seismic code editions supported (Quick Reference Guide)

  •  More white space and indentation for field property formats

  •  New glossary of industry/software terms (User’s Guide)

  • Updated the software to display the .chm-based help when you press F1 in the Material Database Editor, Accounting, Change Model Units, and Create/Review Units modules. Previously, these modules displayed in a text-based help dialog box

 Moved the help for the Stress Isometrics module into the main help file for CAESAR II

CAESAR II 2014 SP2 Revisions and Changes

Piping Input and Materials

  • Fixed issues in the Piping Input where the software did not retain column width changes in the List Input dialog boxes. In addition, resolved issues with the Reset Default Properties option in the context menu. The software displayed a cutting plane on the model when you right-clicked and selected Reset Default Properties if you had not clicked in the grid prior to selecting the option. Also, the context menu did not stay open when you released the right mouse button. Now, the context menu functions as expected.
  • Resolved an issue with the Seismic Wizard in Piping Input, where the software did not revise the uniform loads vector values if the model is in Z-up orientation when you run the wizard. The software now recognizes the new orientation and shows the correct vector values in the Uniform Loads auxiliary panel.
  • Resolved an issue in Piping Input with line numbers when importing piping files into an existing piping job. When you selected Environment > Include Piping Input Files and chose a file to include, the software did not display the line numbers from the included file in the Line Numbers dialog box or on the model. CAESAR II now displays line numbers from any included job in Line Numbers dialog box and on the model.
  • Fixed an issue where, when you selected the entire Elements list input (by clicking in the left corner of the list input) and clicked Duplicate in the block commands, the software stopped responding.
  • Fixed a display issue with the Job Title dialog box in Piping Input. If you typed a full line (75 characters) in the title, when you reopened Job Title dialog box, the software inserted a blank line after the full line. The software now does not insert a blank line when you have a full line of text in the Job Title dialog box. 
  • Fixed an issue where the software stopped functioning when you attempted to renumber a large block of elements if an element from structural or piping file was included (imported) and the elements from that file were in the renumbering selection. In addition, the software did not prompt you if you tried to perform a block command (Rotate, Duplicate, Invert) when no elements were selected. The software now lets you renumber models that have included files in them. Also, the software alerts you if you try to perform a block operation without any elements selected.
  • Resolved an issue with material names in the CAESAR II Material Database Editor. Previously, the software had issues when you entered a material name of 16 characters. You can now only enter a material name of 15 characters or less in the CAESAR II Material Database Editor.

Piping Codes and Calculations

  • Fixed an issue with the Axial SIF (ia) value for jobs that use the B31.3 2012 code edition. When you entered a value of 1.0 for the Axial SIF (ia) for any non-bend elements in the piping input, the software used the Out-Plane SIF (io) value in the calculations, instead of the specified Axial SIF (ia) value. CAESAR II now recognizes any value entered in the Axial SIF (ia) and does not use the Out-Plane SIF (io) value unless you do not specify an Axial SIF (ia) value.
  • Updated the software and user documentation to support ASCE 2010 and IBC 2012 seismic load evaluation.
  • Fixed issues with ISO 14692 jobs where the software did not correctly calculate and display bend SIF information on the Stresses and the Miscellaneous Data output reports and the Bend SIF Scratchpad when you specified an EH/EA value in the piping input. In addition, the software was not displaying the EH/EA values or the Hand Lay check box selection made on the Allowable Stresses auxiliary dialog in the applicable Allowables list input columns.
  • Resolved issues with units conversions for jobs using the BS 7159 or UKOOA codes when you used a custom units file. The issues resulted in discrepancies in calculations between the Bend SIF Scratchpad in Piping Input and the results in the Static Output. The scratchpad calculations now show the same results as the Static Output. (TR-TX-12418)

Graphics/3D Model

  • Resolved an issue with resizing elements and the Lock Graphics function. If you selected Lock Graphics without resizing any anchor, restraint, or hanger, when you unlocked the 3D model, the software resized the elements to their largest size. Now, the software retains the element sizing when you unlock the graphics on the model.
  • Resolved several graphical interface issues when using the Lock Graphics option in the 3D Model. In addition, resolved inconsistent block operation behavior, fixed a From Node input response issue, corrected the units of measure in a few tooltips, and revised the default behavior for keeping or updating material warnings if you exit out of the prompt.
  • Fixed an issue with the Insert Element and Reset Plot options. When you opened a job with the List Input dialog boxes closed, and you clicked Insert Element, the software did not open the Insert Element dialog box. In the same scenario, if you changed the model and clicked Reset Plot, the software did not return the model back to its default state. These options now function as expected when the List Input dialog boxes are closed.
  • Resolved an issue with visibility options for Smart 3D and Smart Plant Review files when you loaded a VUE file. The issue stemmed from a missing .XML file.
  • Fixed a display issue with the visibility options for anchors, restraints, hangers, and structures on the 3D model in Piping Input, Isogen, and Static Output. When you selected the visibility options for these components, the software did not change the model visibility as expected. The Visibility options now function as expected.
  • Resolved a graphics issue in analyzed models when you selected Options > View Animation from the Static Output Processor or the CAESAR II Dynamic Output. The software closed when you selected an element on the model, changed the load case, and then double-clicked anywhere else in the model. This issue was resolved and the software functions as expected.
  • Fixed inconsistencies with the behavior of the Show/Hide check box on the Line Numbers dialog box in the piping input. The issues related to parent/child selections, included jobs selections, and unassigned line numbers on child selections. In addition, resolved inconsistencies with the Reset Visibility option. 


  • Updated stress calculations for B31.3 jobs using Occasional (OCC) and Hydrotest (HYD) load case conditions. The CAESAR II development team revised stress calculations for the Sustained (SUS) condition after the B31.3 code committee moved Code Case 178 into the B31.3 code standard. The software now uses the same stress calculations for Occasional and Hydrotest conditions, which reflects the code standard.
  • Note: This change results in different code stress values for jobs that use the OCC and HYD load cases, especially jobs that have significant torsion stresses.

Hanger Design

  • Corrected an issue during hanger design where the specification of multiple Elastic Modulus values prevented optional boundary condition releases. This issue affected the loads produced in the restrained weight load case, which could subsequently affect the spring hangers selected. The software now allows boundary condition releases when there are multiple Elastic Modulus values specified.
  • Enhanced the Hanger Table and Hanger Table w/ Text output reports to show more characters for Node (the hanger node name). The character addition also displays when you send the reports to Microsoft Word or Excel. In addition, send a hanger report to Microsoft Word, the software displays the report in landscape mode.

Output Reports

  • Resolved an issue with the Send to Printer option in the Static Output Processor. When you generated a stress report on any analyzed job that used the Stoomwezen piping code and selected Send to Printer in the Output Viewer Wizard, the software did not print the Stoomwezen Approval Certificate. The software now prints the certificate when you select Send to Printer and generate the output report.
  • Resolved an issue with input echo reports in the Output Viewer Wizard of the Static Output Processor. When you sent reports to a text (ASCII) file, if there was an input echo report included, the software did not append the input echo information to the existing output. The software was over-writing previous reports listed before the input echo in the Output Viewer Wizard. The software now appends the output from reports and the input echo, instead of generating it as a new output report.
  • Fixed the display of the build number in certain Input Echo and Output text reports. The software was only displaying part of the build number in the header information in some reports.
  • Resolved an issue where, when you analyzed an individual structural model to use the Z-up vertical axis, the software did not display the Z-up change on any output reports that include direction (such as the Displacements, Global and Local Element Forces, and Restraint reports). The software now correctly displays the Z-up vertical axis on output reports that include direction.


  • Data Export (ODBC Database) – Resolved an issue with the Data Export Wizard (ODBC Database) with Microsoft Access 2010 (.accdb) format. The software now successfully exports to an .accdb file.
  • PCF Import – Made several improvements to CAESAR II PCF Import to resolve issues related to pressure and temperature piping input values. Resolved an issue of missing component attributes when importing in a Smart 3D PCF into CAESAR II. Also, updated the software to ignore a status attribute related to drawing when importing PCFs from CAD.

Stress Isometrics

  • Fixed an issue with annotations for material names in the Isogen module where the software did not display the material name in the drawing when you generated stress isometrics. The software now displays the material name annotations on the generated drawing.
  • Resolved an issue with annotations on bends when generating stress isometrics. When you added annotations on a center-point of a 90-degree bend and created an isometric drawing, the software displayed two 45-degree bends on the drawing. This issue was resolved for the bend center-point annotations, and the software now shows one 90-degree bend on the drawing.

Error Checks

  • Fixed an issue with the Nozzle Limits Check where the Error Checker improperly reported an error on a 45-degree nozzle.
  • Resolved an issue during error checking with WRC 297 nozzle identification. The issue, when manifested, caused the software to generate misleading error messages, which also prevented the analysis of the model.
  • Fixed the display of node numbers in certain types of errors reported in the Error Checker. When you analyzed a piping input job and ran the Error Checker, if an error occurred involving a coordinate mismatch of elements, the software displayed different node numbers in the Element/Node Number column than in the Message Text. The software now displays the same node numbers shown in the Message Text and the Element/Node Number column.

User Documentation

  • CAESAR II 2014 documentation is now available in Japanese. When you select Language > Japanese on the interface, the software displays the online help and guides in Japanese.

CAESAR II 2014 SP1 Revisions and Changes


  • Corrected the default value for the SIFs and Stresses>SIF Multiplier for the Sustained Stress Index configuration setting during initial installation. There is now a warning for users who may have already used the setting with its defaults, alerting them that using a SIF multiplier value of 1.0 can cause results that differ from the recommendations by B31.3.

Piping Input, Calculations, and Materials

  • Revised the functionality of the Allowable Stresses auxiliary panel when you select B31.3 as the code, with regard to software defaults for the <f> Allowed Maximum of 1.2 radio button (cyclic reduction factor).
  • Corrected the coefficient of thermal expansion for some duplex and super-duplex steels (A789/A790) in the Material Database based on ASME B31.1 (Table B-1 Thermal Expansion Data, Group 2 – Low Alloy steels) and TEMA 8th Edition (Table D-1) standards.
  • Fixed issues with data consistency in the Material Database Editor when there are anomalies with data entry (such as incorrect data ordering or blank fields).
  • Enhanced the Optimization (Loop) Wizard to improve the stability and robustness of the wizard by handling a wider range of target values. The wizard now automatically chooses the most economical solution based on your target input, which often reduces the number of iterations required for a solution.
  • Fixed an issue when you clicked Analyze multiple times and the software exited you out of the piping input. Multiple clicks on Analyze now act as a single click without issue.


  • Updated several internal calculations for the ASCE 7 2005 wind code to comply with the standard. Changes related to the wind direction factor, minimum wind force, and the topographic factor (Kzt).
  • Resolved an issue with B31.8 minimum wall calculations in the Error Checker when you did not specify a design factor (Fac) in the Allowable Stresses auxiliary panel for piping input. The software now uses a default value of 0.40 if you do not specify a Fac value, which follows code standards.
  • Resolved some issues with B31.8 SIF calculations for extruded outlets, reinforced fabricated tees, and for the Butt Weld SIF/Tee type.
  • Fixed an issue with stress calculations for intersections in ASME NC/ND and RCC-M C/D jobs. The software now uses the effective section modulus for intersection stress calculations for ASME NC/ND and RCC-M C/D jobs.
  • Changed the longitudinal and hoop stress calculations for PD 8010-1. The software now applies either a thin- or thick-walled equation for the calculations based on the D/t ratio, as specified by the piping code.
  • Fixed an issue with local restraints that caused the software to display an Insufficient Memory prompt and to not complete the static analysis when you were using a very large number of local restraints (thousands) in your model.
  • Resolved an issue with wave loading with regard to hydrodynamic coefficients (Cd, Cm, and Cl). The software now correctly calculates hydrodynamic coefficients in wave loads at 90- and 270-degree angles.
  • Resolved an issue in the Dynamic Analysis module where the software could not complete calculations for Fatigue (FAT) stress types and Fatigue Cycles in Spectrum Load Cases.


Long File Paths/File Names

  • Completed background research to identify all areas of the software where there were issues with long file names and long file paths. Research identified the following areas with issues:
    • Fixed an issue with file paths in the Classic Piping Input when you included a piping or a structural file that had a long file path into an existing job and saved the job.
    • Resolved an issue with file paths in the Classic Piping Input for structural jobs when there was an include file attached for pipes or structures and a problem with long paths on include files (piping or structural).
    • Fixed an issue with file paths and file names in the C2Isogen module (Output > Generate Stress Isometrics). 
    • Resolved an issue with file paths in the Buried Pipe Modeler.


Data Export (ODBC Database)

  • Improved how CAESAR II lists details for constant effort support in exported hanger ODBC Database reports.
  • Corrected the figure number (hanger type) in the hanger reporting in the Data Export Wizard (ODBC Database) and Static Output Processor for LISEGA spring cans. 

CAESAR II Neutral File

  • Fixed an issue with memory management for a few of the CAESAR II example jobs when using the CAESAR II Neutral File Interface. The example jobs now convert successfully to a neutral file without any issues.

CADWorx Interface

  • Fixed an issue with materials when using the CADWorx C2OUT function to CAESAR II. The software now retains the CADWorx material assignments when you run the C2OUT function in CADWorx and then review them in CAESAR II. 


  • Enhanced the software to make internal CAESAR II version information available to third-party software through an internal translation DLL, which makes the version information available for input files (._A and .c2 files). 
  • Added a new internal file extension type, MiM, which the software uses in the job archive for interaction with PRG products. 

Output Reports

  • Resolved an issue with the Stoomwezen Approval Certificate where the complete job pathname and approval date did not display when you generate the certificate on an external application.
  • Resolved several issues with the Stress Summary report. 
  • Stress Isometrics
    • Renamed the output PCFs the software creates when generating isometric drawings to distinguish them from input PCFs. Now, the software appends “SISO” to the file name and to all subsequent isometric files generated from CAESAR II. 
    • Fixed a symbols display issue on generated ISOGEN drawings when in Isometric view. CAESAR II now displays unique symbols to distinguish between spring hangers and spring cans on the ISOGEN drawing.
  •  WRC 107 (537)/297/PD5500 Module
    • Fixed an issue in WRC 297/PD5500 analysis with square or rectangular attachment types, which caused errors with the WRC 297 output report

Online Help

  • Fixed the F1 Help for the Review Intersection SIFs and Review Bend SIFs dialog boxes in the piping input. The software now displays the applicable CHM-based Help topic for bends and intersection SIFs based upon the dialog box from which you press F1. 
  • Software Updates and Installation
    • Updated the Help > Check for Updates feature to distinguish between the Commercial and Nuclear versions of the software and update messages to include Smart Support information. 
    • Significantly reduced the size of CAESAR II service pack installs. 


CAESAR II 2014 Version 7.00 Changes & Enhancements (14/17)
CAESAR II 2014 (7.00) delivers a number of updates for the latest piping codes, numerous stability improvements, and features to benefit your user experience.

Technical Updates

The following technical changes were made for this release, which may affect the numeric results:

  • Added a new equation for calculating expansion stress cases with new SIF and index values to support the 2012 Edition of the ASME B31.3 code.
  • Addressed bend pressure stiffening and changed the longitudinal pressure stress equation, among other revisions, to support the 2012 Edition of the EN 13480 code.
  • Updated the minimum wall thickness equation for ASME B31.8 Chapter VIII to consider the longitudinal joint efficiency (using the Eff input box).
  • Updated the ASME B31.8 code interpretation to use either of the two combined biaxial stress equations for restrained pipe, as referred to in Paragraph 833.4, instead of using the maximum of the two. You can specify this using the Yield Stress Criterion configuration setting in the SIFs and Stressessection of the Configuration Editor.
  • Revised the calculations for SIFs in non-corroded conditions when the CODETI piping code is selected, based on clarification from French Code Committee.
  • Revised the Static Analysis (Load Case Editor) to automatically recommend Expansion (EXP) stress range load cases for better coverage of multiple operating conditions.
  • Provided an option for users to select the allowable corresponding to temperature for that particular Occasional (OCC) load case for B31.3 jobs.
  • Added support for in-line flange check evaluations for MAX and ABS load case combinations.
  • Resolved an issue in Structural Input where the software did not process UNIF values as gravitational multipliers (G loads) after you added theGLOAD command into the input stream. The software uses the gravitational multiplier (G load) value for all UNIF values when you add the GLOADcommand into the input stream.

Interface Enhancements

The following are the new features in this version.

Piping Code and Material Database Updates

  • Updated to support the 2012 Edition of the ASME B31.1 code. This work included material property updates.
  • Updated to support the 2012 Edition of the ASME B31.3 code. This work included a new equation for calculating expansion stress cases with new SIF and index values.
  • Updated to support the 2012 Edition of the ASME B31.8 code.
  • Updated the ASME B31.8 code interpretation to use either of the two combined biaxial stress equations for restrained pipe, as referred to in Paragraph 833.4, instead of using the maximum of the two. You can specify this using the Yield Stress Criterion configuration setting in the SIFs and Stressessection of the Configuration Editor.
  • Updated to support the 2013 Edition of the ASME B31.5 code.
  • Updated to support the 2012 Edition of the EN 13480 code. This work included addressing bend pressure stiffening and changes to the longitudinal pressure stress equation, among other revisions.
  • Updated the Material database, as required for piping code updates.
  • Updated the flange rating for in-line flange checks per EN 1092-1:2013 and ANSI B16.5 2009.
  • Added support for ANSI 16.5 2009 metric flange ratings.
  • Added fatigue curves as indicated in the 2013 Edition of ASME Section VIII, Div. 2.
  • Extended the content for the ASME B31.3 code update and B163 to 1400F.

Modeling and User Interface

  • Enabled quick global property changes (such as for temperature and pressure) from the Legend dialog box in the 3D model.
  • Enhanced the Distance command to measure between two points in the 3D model. The distance functionality works either graphically or by entering node numbers, and provides you with a quick way to verify your model.
  • Added a new Global menu in the piping input, which includes the Block commands. These commands are also accessible through the Block Operations toolbar and the right-click context menu from the List>Elements dialog box.
  • Enhanced the Structural Steel Wizard to display units for various input fields, added more tool bar icons, and enhanced input grid usability.
  • Addressed graphics issues.
  • Completed minor usability enhancements based on customer feedback.

Static and Dynamic Analysis

  • Revised the Static Analysis module (Load Case Editor) to automatically recommend Expansion (EXP) stress range load cases for better coverage of multiple operating conditions.
  • Provided an option for users to select the allowable corresponding to temperature for the specified Occasional (OCC) load case for B31.3 jobs.
  • Added support for in-line flange check evaluations for MAX and ABS load case combinations.


  • Added the ability to import multiple supports at the same location from the Import PCF or Intergraph Smart 3D PCF interfaces.
  • Enhanced the hanger table for support design with LISEGA’s LICAD software in the Data Export Wizard (Export to MS Access).


  • Added output filters for flanges so that you can identify the most overstressed flanges.
  • Updated the software to show the actual Stress Indices (I) that are used for sustained and occasional static load cases for ASME B31.3 code.
  • Updated the Generate Stress Isometrics (CAESAR II Isogen module) with I-Configure 2014 (5.0).


  • Updated the Quick Reference Guide with dates and information for all piping code updates made in CAESAR II 2014.
  • Updated the F1 help in the Static Output Processor.


The following revisions were made for this release:

User Interface/3D Model

  • Fixed an issue with the Insert Element and Reset Plot options. When you opened a job with the List Input dialog boxes closed, and you clicked Insert Element, the software did not open the Insert Element dialog box. In the same scenario, if you changed the model and clicked Reset Plot, the software did not return the model back to its default state. These options now function as expected when the List Input dialog boxes are closed. 
  • Resolved an issue with resizing elements and the Lock Graphics function. If you selected Lock Graphics without resizing any anchor, restraint, or hanger, when you unlocked the 3D model, the software resized the elements to their largest size. Now, the software retains the element sizing when you unlock the graphics on the model.


  • Updated stress calculations for B31.3 jobs using Occasional (OCC) and Hydrotest (HYD) load case conditions. The CAESAR II development team revised stress calculations for the Sustained (SUS) condition after the B31.3 code committee moved Code Case 178 into the B31.3 code standard. The software now uses the same stress calculations for Occasional and Hydrotest conditions, which reflects the code standard. Note: This change results in different code stress values for jobs that use the OCC and HYD load cases, especially jobs that have significant torsion stresses. (TR-TX-12374)
  • Resolved issues with unit conversions for jobs using the BS 7159 or UKOOA codes when you used a custom units file. The issues resulted in discrepancies in calculations between the Bend SIF Scratchpad in Piping Input and the results in the Static Output. The scratchpad calculations now show the same results as the Static Output. (TR-TX-12342)

Error Checks

  • Resolved an issue during error checking with WRC 297 nozzle identification. The issue, when manifested, caused the software to generate misleading error messages, which also prevented the analysis of the model.

Output Reports

  • Resolved an issue with the Send to Printer option in the Static Output Processor. When you generated a stress report on any analyzed job that used the Stoomwezen piping code and selected Send to Printer in the Output Viewer Wizard, the software did not print the Stoomwezen Approval Certificate. The software now prints the certificate when you select Send to Printer and generate the output report.
CAESAR II 2013 R1 Version 6.10 Changes & Enhancements (11/12)
Description: CAESAR II 2013 R1 (6.10) delivers a number of significant new and extended capabilities to increase productivity, supply the latest piping codes, and improve user experience.

Technical Updates

Updated piping code information for ASME B31.1, B31.3, B31.8, B31.9, and Z662 codes. The ASME B31.3 2010 Edition includes many significant changes, such as the new equation for sustained case evaluation and new stress indexes (It/Ia).

Interface Enhancements

  • Import piping models from Smart 3D to the Piping Input module, using the new APCF interface. This interface saves you data entry time while reducing errors.


  • Incorporate the design context of the plant within CAESAR II to make more intelligent re-routing and support location decisions and potentially reduce design-analysis iterations. The ability to import Smart Plant 3D (S3D)/Smart Plant Review (SPR) graphic environment (VUE file) complements the existing capability to import CADWorx (*.dwg) plant models.

  • Export to Microsoft Access format. Using this format, selected CAESAR II results are available in Smart Plant 3D (S3D)/Smart Plant Review (SPR) for easier identification of changes made by the engineer.


Productivity and Usability Enhancements

  • Reorganize a model using two new block commands (Invert and Change Sequence).
  • Use line number classifications to make quick edits when performing all block operation selections (such as duplicate, delete, and renumber). This feature is in addition to the already available Graphical and List Select functions.
  • Experience the improved Renumber and Annotation functions.

Performance and Functionality Improvements

  • Increased stability by updating the Isogen module to Personal Isogen Version 8.1.
  • Increased performance by updating the graphics engine.

Internationalization Updates

  • Key portions of user interface (such as Static Analysis) are now available in Japanese. Upcoming planned translations for Russian, Chinese, Spanish, Korean and Portuguese.
  • Documentation and help available in English and Japanese languages.
  • Updates to support Japanese seismic code, KHK Level 1.
  • Additions to support spring hanger databases for Mitsubishi, Yamashita, Sanwa Tekki, and Techno.

Additional Improvements to Product Quality

  • Continued process improvements to standardize development and testing to meet ASME NQA-1 requirements.
  • Enhanced user documentation to include task-oriented procedures.
  • Updated the CAESAR II main menu to use the ribbon interface.




CAESAR II Version 5.31 Changes & Enhancements (5/12)
Description: The 5.31 release of CAESAR II includes the following changes and enhancements:
  • Enhanced and improved the Smart 3D to CAESAR II interface (PCF).
  • Introduced a faster, interactive, on-demand and flexible PCF interface, called Advanced PCF (APCF) Import, into the Piping Input processor.
  • Enhanced the CAESAR II Data Export Wizard to support ODBC Microsoft Access format, which facilitates round-trip results to S3D and SPR.
  • Added new element order commands for block operations: Invert and Change Sequence.
  • Added usability improvements to reduce user input and editing time, including the use of line numbers to block select elements.
  • Improved many Isogen-related issues.

CAESAR II Version 5.30 Changes & Enhancements (11/10)
Description: This list details the new or changed capabilities and features of CAESAR II 2011 (Version 5.30)
  • The B31.9 piping code has been added.
  • The following piping codes have been revised: RCCM-C, RCCM-D, ASME-NC, ASME-ND, GPTC/Z380, Z662, B31.1, B31.3, EN-13480 (2010 Draft).
  • Added spring hanger databases for PSS (Germany) and Seonghwa (Korea).
  • Structural tubing shapes added to the AISC structural database.  
  • A new restraint report added showing reactions in local element coordinates.
  • User configurable Nozzle Limits added. 
  • Line Number Specification and Manipulation has been added. 
  • API-650 nozzle displacement values automatically included in the model. 
  • Graphic ability to move/stretch elements has been added.
  • Insulation additions (cladding & refractory specifications) 
  • Uniform load enhancement (G’s or force/length in same job) 
  • Optional “spring hanger hardware weight” can be specified.
  • Static output menu shows visually which load cases have passed or failed.
  • Additional flexibility with user material databases through user named files.
  • Improved displacement import/export facility.
  • Improved PCF interface.
  • Improved WRC module
  • Many graphics/modeling/Interfacing improvements
  • Valve/Flange database option to keep 3 elements
  • Flange “G” values automatically generated
  • Spectra and Time Histories can be plotted in dynamics.
  • Key strokes can be reassigned or added.

CAESAR II Version 5.20 Changes & Enhancements (4/09)
  • The ISO-14692 Code has been added for FRP systems.
  • A “Loop Optimization Wizard” has been incorporated to assist in expansion loop design.

loop wizard dialog

  • The “Buried Pipe Modeler” now supports the “American LifeLines Alliance” as a second soil stiffness method.
  • The Mexican Seismic Code has been added to the Dynamic Input module for the automatic generation of response spectra.
  • A “static seismic wizard” has been added to assist in computing “G factors” for ASCE, NBC, and CFE.
  • Additional wind codes (10) have been added to the Static Load setup.
  • The permitted number of static load cases has been increased from 99 to 999.
  • The valve/flange insertion routine has been modified to “cut back” the straight pipe length if necessary.
  • A number of “drop lists” have been added to the Piping Input Spreadsheet to assist with input specification.  These “drop lists” appear on the “bend radius” and “insulation density” fields.
  • Spring Hanger Table definition has been streamlined through the addition of three checkboxes for: cold load design, extended range springs, and centered hot load.
  • Flange Symbols are now drawn on the piping elements if flange ratings have been requested.
  • The following piping codes have been revised due to “code changes”:  B31.1, B31.8, GPTC/Z380, ASME NC, ASME ND.
  • “User writeable” subdirectories have been moved from below caesarii to the %allusersprofile” area.
  • Automatic e-mail generation (for Technical Support issues) has been added.
  • The “File Open” dialog has been improved to permit the “roll-back” to earlier revisions of the (piping) input.
  • A new export option is available for “Static Output” data – export to MS Excel.  This is raw data only to improve export speed.

CAESAR II Version 5.10 Changes & Enhancements (9/07)
  • Added in-line flange rating evaluation per B16.5 and NC-3658. 
  • Graphics Improvements:
    • Graphics rendering speed has been improved by 20% to 50% depending on the job.
    • Added additional controls to view corrosion and densities.
    • Added the ability to import an Autocad (CADWorx) model directly into the piping input, to provide visualization of supporting steel, vessels and other equipment.

  • Static Output Processor Improvements:
    • Report generation times reduced by 70% or better.
    • Presentation in “tabbed” window to allow viewing multiple reports, and immediate switching between reports.
    • Individual items can be selected from the “Miscellaneous Report”.
    • Reports can be zoomed and individually directed to an output device via a “context menu”.
    • Custom report templates can be imported and exported.
  • Static Load Case Editor enhancements:
    • In-Line Flange Evaluation has been added, at the load case level.
    • Added the ability to alter the “occasional load multiplier” on a “per load case basis”.
    • Added the ability to “import” static load data from different jobs.
    • Added the ability to copy wind and wave vectors.
  • Added user control over whether or not insulation should be considered in hydro test cases.
  • The following new piping codes have been added: PD-8010 Part 1 and Part 2.
  • The following piping codes have been revised due to “code” changes: B31.1, B31.3, B31.4, Z662, EN-13480
  • Added support for B31.3 Section 319.2.3(c), allowing axial stress to be included in the Expansion Code Stress.
  • API-661 revised to 6th Edition.
  • Wind and Seismic load calculations revised to ASCE #7 2005.
  • Added a number of European materials to the material database.
  • Updated stainless steel pipe specification data per B36.19M.
  • Updated DIN pipe size specification to comply with EN-10220 (seamless) instead of DIN-2458 (welded).
  • Chinese structural steel and expansion joint databases have been added.
  • Added spring hanger data from Gradior Power, (Czech Republic).
  • Updated the flange material database per ASME Sect VIII Div 1, 2007 Edition.
  • Updated the Inoflex Spring Hanger data.

CAESAR II Version 5.00 Changes & Enhancements (10/05)
  • The following new piping codes have been added: EN-13480, GPTC/192, Z662 Ch 11.
  • The following piping codes have been revised due to “code” changes: B31.1, B31.3, B31.5, B31.8, B31.11, ASME NC, ASME ND, CODETI, TBK 5-6.
  • Additional codes and standards updated: API-610.
  • Added Ameron Bondstrand, and Conely FRP pipe specification files.
  • Added Binder (Australia) and PiHASA (Spain) spring hanger tables.
  • Added structural steel data bases from India and Japan.
  • The ability to perform dynamic analysis optionally using a consistent mass matrix. This obviates the need to re-mesh the model for better mass distribution.
  • The ability to perform an analysis using the “hot” material elastic modulus.
  • The static output processor has been enhanced to provide users with the ability to create custom, reusable reports.
  • The piping input processor has been revised to provide a combined view showing both the graphics and the spreadsheet. The new piping input processor has integrated the Piping Error Checker, and access to the configuration module has been provided. For debugging and problem solving, relevant sections of the spreadsheet can be torn off and placed on the graphics pane, allowing the spreadsheet to be hidden for larger graphics display. Additionally, sections of the model can be graphically selected and then modified.

  • Updated Intergraph and PCF interfaces.
  • An “Isogen” export facility has been added, allowing the creation of Isogen “stress isometrics”.


CAESAR II Version 4.50 Changes & Enhancements (11/03)
  • Revised piping codes: B31.1, B31.4, ASME NC, ASME ND, IGE/TD/12, API-610.
  • Revised material database for B31.1 A2001 changes.
  • Reducer element added.
  • Dynamic HTML help for piping, structural input and configuration modules.
  • Major graphics improvements including:
    • A walk-through option is available.
    • The static output processor can now produce colored stress plots of the piping system.
    • A graphical find (zoom to) option has been added.
    • Instant use of graphics, even before drawing is completed.
    • Resizable restraint/hanger symbols.
  • “Spectrum Wizard” in dynamics to automatically build spectra for UBC, ASCE, IBC, and ASME spectra.
  • Automatic acquisition of website software updates.
  • The structural steel interface has been redesigned for easier operation.
  • Modified to allow multiple instances of CAESAR II to run
  • Additional FRP data files included.
  • The static output processor remembers all user settings (filters, labels, and report size).
  • Combined WRC-107/297 module for local stress calculations.
  • “Load Case Template” implemented for recommending static load cases.

CAESAR II Version 4.40 Changes & Enhancements (5/02)
  • Revised piping codes: B31.3, B31.4, B31.5, B31.8, ASME NC, ASME ND
  • The B31.11 piping code has been added.
  • An alpha-numeric node label option has been added to the piping input module
  • Expanded Static Load case options: (1) added load components H, CS, HP, and WW (hanger loads, cold spring, hydro pressure, and weight filled with water, respectively), (2) added HYDRO stress type, (3) added option to set snubber and hanger status on a load case basis, (4) provided ability to scale friction factor on a load case basis.
  • Added automatic generation of a hydrotest load case (WW+HP, HYD stress type, and spring hangers locked), triggered by the presence of a non-zero HP.
  • A large number of updates have been made to the 3D input graphics, as well as partial implementation in the static output processor (including the “Element Viewer”).
  • Updated the spring hanger design algorithm to provide the option to iterate the “Operating for Hanger Travel” load case to include the stiffness of the selected hanger.
  • Added new configuration options for ambient temperature, default friction coefficient (if non-zero, automatically applied to new translational restraints), liberal stress allowable, stress stiffening, and Bourdon settings, as well as B31.3 handling of B16.9 welding tee & sweepolet SIFs.
  • Spring Hanger manufacturers have been added, Pipe Supports USA and Quality Pipe Supports.
  • Added the ability to define the flexibility factor on bends.
  • Included piping and structural files now support long file names, may be located in any directory path, and the number of included structural files has been expanded from 10 to 20.
  • Results of the Hanger Design Cases are now optionally viewable in the Static Output Processor (set status to “KEEP” in the Load Case Options).
  • Added the ability to filter static Restraint reports by CNODE status.
  • Added a new “warning report” to the static output.
  • A “dirty flag” has been added to the piping input preprocessor and the configuration modules. Attempting to exit these processors without saving changes produces a warning message.
  • Differences between material data in the input file and in the material database (including missing “user materials”) are now detected, offering the user the opportunity to use the original data.
  • Reviewed/updated the “minimum wall” computation for all piping codes for straight pipe.
  • A field for specifying “Marine Growth Density” has been added to the Wind/Wave dialog.
  • Updated API-661 to 4th Edition.
  • Added the ability to save static load case data without running the job.

CAESAR II Version 4.30 Changes & Enhancements (3/01)
  • Enhanced Input Graphics – color coding for diameters, thicknesses, temperatures, pressures; a transparency option, user session settings saved on a per job basis, graphics + LIST available at the same time.
  • An Undo/Redo facility has been incorporated into the piping input module.
  • An optional “Z Axis Up” feature is available.
  • The Static Load Case Editor has been enhanced to allow user specified combination types (Algebraic, Scalar, SRSS, SignedMax, SignedMin, Max, Min, Absolute), as well as user specified names, output type (Displacement, Force, Stress), as well as output status (Keep, Discard).
  • A new Code Compliance report has been added.
  • An ODBC Wizard has been added to address the need to send specific data to external databases. Output can be directed to MS Access, a flat text file, or an XML file.
  • The 3D graphics capabilities have been incorporated into the Structural, Animation, and WRC107 modules.
  • Animated Tutorials have been incorporated into the Documentation section.
  • Updated piping codes.
  • All text output can be (optionally) directed to MS Word.

CAESAR II Version 4.20 Changes & Enhancements (2/00)
  • New Input Graphics – utilizes a true 3D library, enabling graphic element selection
  • Element input or redirection via local coordinate (cosines) system
  • Completely revised material data base, including Code updates
  • Optional static output in ODBC compliant data base for static restraints is available
  • Hydrodynamic loading for offshore applications. This includes the Airy, Stokes 5th, and Stream Function wave theories, as well as Linear and Power Law current profiles.
  • Wind analysis expanded to handle up to 4 wind load cases
  • New piping codes: B31.4 Chapter IX, B31.8 Chapter VIII, and DNV (ASD)
  • A wave scratchpad – see the recommended theory graphically, or plot the particle data for the specified wave.
  • Hydra expansion joint data bases
  • A new / revised expansion joint data base is available as a result of the merger of Senior Flexonics and Pathway Bellows
  • A new hanger table (Myricks) is available.
  • Updated piping codes: B31.1, B31.3, B31.4, ASME NC, ASME ND
  • Automatic Dynamic DLF Plotting
  • PCF Interface

CAESAR II Version 4.10 Changes & Enhancements (2/99)
  • Expanded the temperature, pressure, displacement, and force load sets to allow up to 9 distinct vectors.
  • Finalization of TD/12 piping code.
  • Updated the CODETI, NC, ND, B31.1, and B31.3 piping codes to latest addenda.
  • Added Fatigue Analysis capabilities, including Cumulative Damage.
  • Added “results filters” to limit the output reports to specific areas of interest.

CAESAR II Version 4.00 Changes & Enhancements (12/97)
  • Windows conversion. The entire program was converted from a DOS based application to a native Windows (95/NT) application.
  • Simultaneous review of graphics and input spreadsheet.
  • Addition of rendering and wireframe graphics in plot modes.
  • Added the ability to extract piping loads from solution files in the WRC and Equipment modules.

CAESAR II Version 3.24 Changes & Enhancements (3/97)


Multiple (3) displacement/force/uniform load vectors have been added. Note that these load cases, called D1/D2/D3 and F1/F2/F3 , may be toggled on the input plot by continuing to press F3 and F5 (displacements cycle through D1 D2 D3 , and then off). The naming of these load cases has also required the renaming of the CAESAR II load combination terms – D1 F1 S1 , etc. must now be called DS1 FR1 , and ST1 . Note that all hanger loads and cold spring forces (from materials 18 and 19) are still lumped into load case F1 , for consistency with previous versions of CAESAR II .


A material data base for piping properties and allowable stresses for many of the piping codes supported by CAESAR II has been implemented. This is invoked by pressing [ALT – M] on the mainCAESAR II input spreadsheet (also at the list option and on the WRC 297 nozzle flexibility spreadsheet). After bringing up the list of materials, a material name can be typed in; matching records are then displayed for selection. Allowable stresses are updated automatically whenever temperatures, materials, and/or piping codes change.


Database management is provided from the Utilities option of the main menu. Users may edit COADE provided materials or add their own. Material parameters may be provided for code 0 (represents generic values for any non-specified code) or for specific codes. It is recommended (due to futureimplementation plans) that metals be assigned identification numbers between 100 and 699, while FRP materials receive numbers between 700 and 999. Note that selection of FRP materials from the material database will not currently activate the orthotropic material model in CAESAR II . This must still be done through the use of material 20 (see item 6 concerning this below).


8 character job names are now supported (input files are identified by extension ._A, output files by extension ._P, ._S, etc.). Existing files are automatically recognized and converted to their new format. (See related item 16 below.)


Modifications have been made to allow multiple users working from the same network data directory via the environment variable COADE_USER. This environment variable should be set to a unique 3 character combination (i.e., the user’s initials) for each user working in the common directory. Implementation can be done by adding to the user’s AUTOEXEC.BAT file a line such as:



CAESAR II ’s Valve and Flange database now incorporates data files from CADWorx/Pipe . This change provides four advantages:


a) Component weights and lengths are more accurate, as well as traceable to specific catalogs, standards, etc.


b) Weights and lengths are provided for more components than were previously available in the CRANE or GENERIC databases.

  c) Since CADWorx/Pipe data files are text files, users may easily edit or add components.

d) If the user also has CADWorx/Pipe on their machine, the two programs will share the same data files and project specs, enhancing the performance of the bi-directional interface. Gaskets are included for flanged items, so a better fit is provided between the CADWorx/Pipe and CAESAR II models.


The user may now set default values for FRP (material 20) parameters via the configuration/setup. These default parameters may be read automatically from manufacturers data files by toggling through the list of available files, and then pressing [ALT-U] (for Update) on the selected vendor file. Vendor files are recognized by their .FRP extensions; since these are text files, users may create them easily themselves, or vendors may distribute them to their customers.


The UKOOA (United Kingdom Offshore Operators Association) piping code for FRP piping has been added.


The Z183 and Z184 piping codes have been replaced with the Z662 code, which has been expanded to consider calculation of stresses in “restrained” piping.


The ASCE #7 wind code has been updated to the 1995 edition.


The API-610 code in the equipment module has been updated to the 8th edition.


ASME Section VIII Division 2 stress indices and WRC-107 SIF (k , k ) values have been incorporated into the WRC-107 module.


The “Relief Load Synthesis” dynamics module now supports metric (or custom) units.


A number of configuration file default values have been revised in order to improve calculation results or program performance:


Changed From To



















Four new directives added to the   configuration file.



user defined, defaults to SYSTEM (note user may now maintain multiple system directories for different projects)  
  UNITS_FILE_NAME = user selected from list (note current units are now set through theconfiguration/setup, not through the units option of the main menu)  

Design strain or Actual Pressure


user selected from list



The configuration file can also be password protected in the Installation Directory . This prevents modification of all Computation and Stress Control directives. Subsequent use of the configuration module prevents modification of these directives, unless the password is known. Colors, printer settings, etc. may still be changed by users without the password.


CAESAR II has been modified to accept an optional job name (including full drive and path data) as an argument; the program switches to the appropriate drive and directory, opens the specified job, and goes into input (bypassing the main menu). This allows the definition of ._A files as CAESAR II input files (under Windows 95) and subsequent double clicking on the file name in a Windows/95 explorer window to start the input processor on the picked job file. This also allows CAESAR II to be spawned from other programs, right into a job.


Modifications to CAD interfaces: Intergraph and CADPIPE.


All necessary routines have been checked (and modified where appropriate) to address the “Year 2000″ issue.


A Korean structural steel shape library has been added.


A new spring hanger table has been added (SARATHI).


BS-5500 nozzle flexibilities have been incorporated to complement the WRC-297 and API-650 nozzle connections.


CAESAR II Version 3.23 Changes & Enhancements (3/96)
  • Mouse support has been added to most modules.
  • The German piping code, FBDR, has been added.
  • Major improvements to FRP (fiber reinforced plastic) stress calculations. This includes the BS 7159 code and guidelines set forth by FRP manufacturers.
  • A bi-directional link to CADWorx/PIPE (COADE’s Piping CAD system) has been added.
  • The WRC107 module has been redesigned to incorporate multiple load cases and perform the ASME Division 2 Stress Intensity Summation, all in one step.
  • An interface to Sunrise System’s PIPENET program has been developed.
  • The South African structural steel tables have been added.
  • Two new spring hanger manufacturer’s tables have been added; Comet (UK) and Hydra (Germany).
  • Two new commands have been added to the structural preprocessor; UNIT and GLOAD.
  • The CADPIPE interface has been updated to comply with the new release (Version 4.1) of CADPIPE.
  • Additional modifications have been made to the Intergraph interface
  • The low DOS RAM requirement has been reduced to 420 Kbytes.
  • The equipment module has been updated to reflect the 1995 edition of API-617.
  • The B31.3 piping code has been updated per the 1995 addendum.

CAESAR II Version 3.22 Changes & Enhancements (4/95)
  • The following enhancements and additions have been added to CAESAR II for the Version 3.22 release. Any “Technical Changes” made, which could affect the computed results, are listed on the following page.
  • The Harmonic solver has been updated to provide “damping”. Harmonic analysis can now include or exclude damping as the user deems necessary.
  • The following codes have been reviewed (and any necessary changes made) for compliance to the latest editions: B31.1, B31.3, B31.4, B31.5, B31.8, NC, ND, and BS-806.
  • The following additional piping codes have been added: RCCM-D, CODETI, TBK 5-6.
  • Center of Gravity calculations have been added, with results displayed in the error checker.
  • A Bill of Materials report has been added.
  • Yield criterion stresses can be computed as either Von Mises or as 3D Maximum Shear Stress intensity.
  • Hoop Stress can be computed based on Outer Diameter, Inner Diameter, Mean Diameter, or Lame’s equation.
  • The spring hanger design spreadsheet has been modified to default to a 25% load variation. In addition, the actual hanger load variation now appears in the hanger output reports.
  • A new command (WIND) has been added to the structural steel preprocessor. This allows selective wind loading on an element by element basis.
  • A new key-combination (Alt-D) is available in the input processor to compute the distance between two nodes.
  • User specified coordinates for up to 30 nodes are saved in the input file.
  • The input title page has been expanded from 19 to 60 lines.
  • Automatic node numbering abilities have been added to the spreadsheets of the main piping input module
  • Expansion Joint data bases from IWK (Germany) are provided.
  • Expansion Joint data base from Senior Flexonics is provided.
  • MISC converted to 32 bit operations. This module provides the SIF, Flange, WRC297, B31G, and expansion joint rating computations.
  • ROT converted to 32 bit operations. This module provides the equipment calculations for NEMA, API, and HEI. General revisions made for more consistent input screens and help messages.
  • A new report option (in static output) is available to review the “miscellaneous” computations made by the error checker. This report includes: SIFs and flexibility factors, pipe properties, nozzle flexibility data, wind data, CG data, and the bill of materials report.
  • The Intergraph Interface has been improved. The interface now transfers the temperature/pressure pairs. Additionally, if a material mapping file is present, material data can be set correctly by CAESAR II.
  • The CADPIPE Interface has been updated in accordance with CADPIPE Version 4.0.
  • The Restraint Summary in the static output processor has been modified to include the translational displacements of the restrained nodes.
  • The output processors (static and dynamic) have been modified to allow users to change the name of the disk output file if desired. Additionally, modifications have been made so that only a single output device can be enabled.
  • All “language” files have been translated into German. Use “INSTALL /G” to acquire the German files.
  • A new control [F8] at the output menu level allows switching jobs without returning to the Main Menu.

CAESAR II Version 3.21 Changes & Enhancements (7/94)
  • Most of the CAESAR II executable modules have been converted from Microsoft 16 bit FORTRAN to WATCOM 32 bit FORTRAN. This has reduced the low DOS RAM requirements of the program from 577k to 475k.
  • The modules converted to 32 bit operation for Version 3.21 are summarized in the following table:
  • Static Stress Computation Module (1)
  • Piping, Buried & Structural Steel Input Modules (3)
  • Piping Error Checker (1)
  • Load Case & Dynamic Input Module (1)
  • All CAD interfaces (8)
  • Neutral File interfaces (2)
  • The software now supports an ESL from a new vendor. This provides CAESAR II with full networking abilities. The program first checks for a local ESL (from either vendor), then for a network ESL.
  • Toward the support for network operations, the data files which are not job specific are now assumed to be located in a SYSTEM subdirectory underneath the CAESAR II installation directory. These data files include: the input listing formatting files (*.INP), the accounting data files, the printer formatting file, the file handler template file, and the various header files.
  • The common factor among all of these files is that they are specific to a company installation, not a particular data directory. Up until Version 3.21, these data files were manipulated by the program (or sometimes directly by the user) in the installation directory. However, many network installations“write protect” their installation directories, making modifications to these files impossible. We have therefore placed these files in a SYSTEM subdirectory to which users should be given complete access.
  • Note that CAESAR II Version 3.21 will be capable of running on a local machine (with either vendor’s local ESL) or on a network (with the network ESL). The changes made to the software enable the same version to be run under these various configurations.
  • An additional spring hanger manufacturer has been added, Carpenter & Paterson, UK.
  • The UBC (Uniform Building Code) earthquake spectra have been added.
  • The B31.5 piping code has been added.
  • The piping code addenda have been reviewed and any necessary changes made to the software. The addenda include revisions for: ASCE #7, B31.1, B31.8, ASME NC, and ASME ND.
  • The SIF scratch-pad from the Miscellaneous processor (Option C of the Main Menu) has been incorporated into the piping preprocessor. This processor includes all of the supported piping codes (not just B31.1 and B31.3 as before) and all of the fittings. Additionally, any changes made to the scratch-pad data can optionally be transferred directly to the main CAESAR II data spreadsheets.
  • Additional changes to the input piping preprocessor include:
    • problem size is now dependent on the amount of free extended memory – the old limit of 400 elements is now upwards of 8,000 elements
    • graphics menus automatically turned off for hard copies
    • optional node number display for supports, anchors, hangers, and nozzles
    • function key map shown on main spreadsheet
    • auxiliary input spreadsheets support help
  • The accounting system has been completely rewritten. This provides a more streamlined interface. Additionally, accounting statistics are now recorded from the stress computation modules (previous versions only recorded the actual matrix decomposition times).
  • The API-617 and NEMA-SM23 reports have been overhauled so that the code compliance when using non-English units systems is consistent.
  • The new Flange Rigidity factor from ASME Section VIII has been added.
  • A new loader (C2.EXE) has replaced the original one (C2.COM). This new loader performs initial startup checks, with diagnostic reporting if necessary, and enables error processing from the Main Menu.
  • The configuration program has been modified to track changes. Users attempting to [Esc] out after making changes are warned that the changes will not be saved.
  • A “graphics viewer” has been added to the file manager. This enables rapid model plotting directly from the file manager of the Main Menu.
  • Additional directives are available to disable the generation of the Table of Contents page, and disable the display of the spreadsheet function key mapping.

CAESAR II Version 3.20 Features (10/93)
  • A completely new set of documentation accompanies this release. This documentation consists of: a User’s Guide, an Applications Guide, and a Technical Reference Guide.
  • The static in-core and out-of-core solvers have been converted to run in 32 bit protect mode utilizing extended memory. Solution times for large jobs have been cut by an order of magnitude.
  • The static output processor has been converted to run in 32 bit protect mode utilizing extended memory.
  • Both the static and dynamic output processors now have the capability to generate ASCII disk files on any drive or directory (using the COADE file manager) on the computer. Additionally, a table of contents summarizing the output is generated for printer and disk devices.
  • The dynamic output processor now includes titles and page numbers (similar to statics), and provides input echo (both system and dynamic) abilities.
  • Modal time history analysis has been added. This includes output report review and animated response review.
  • Standard spectrum analysis now include modal components for displacements. Additionally displacement information is now available for static-dynamic combinations.
  • The Included Mass Report has been clarified and modified to include the active mass in each of the global directions. The percent of the force included/added is now based on a vector sum rather than an absolute sum.
  • The ZPA used in the missing force correction can now be controlled via the configuration file. The user can specify that the ZPA be based on the last extracted mode or the last spectrum value.
  • The static load case array space has been increased by a factor of 5, allowing more flexibility in static load case setup.
  • API-650 nozzle flexibilities, according to the ninth edition, July 1993.
  • Checks for allowable loads on Fired Heater Tubes according to API-560 have been added.
  • As an option, users can consider the effects of pressure stiffening on straight pipes.
  • Three additional spring hanger tables: Sinopec (China), BHEL (India), and Flexider (Italy).
  • The Australian structural steel shape data base has been added.
  • The ASME material data base has been updated to reflect the 1992 Code addendum.
  • The printer testing routines have been completely rewritten. Additionally, output can be directed to any LPT port.
  • The ability to configure the printer, either dot matrix or laser jet. This is implemented via a text file containing the printer formatting codes, which the user is free to modify.
  • Password protection for input data files, to prevent modification of completed projects.
  • All of the screens in the piping preprocessor (except for the main spreadsheet) are now supported in Spanish and French.
  • Input/Output file time/date sequencing checks have been added to the dynamics modules.
  • The “break” command in the piping input processor has been modified to accept input in feet-inch units instead of only feet. This should allow compound entries in any units system.

CAESAR II Version 3.19 Features (3/93)
  • BATCH STREAM PROCESSOR – A new processor has been included which will allow multiple jobs (up to 12) to be run in series, without user intervention. The jobs can be static analysis, dynamic analysis, or both.
  • EXPANSION JOINT DATA BASE – The Pathway Bellows expansion joint data base has been updated. The new data base includes two additional pressure classes and diameters out to 144 inches.
  • A new expansion joint data base from RM Engineered Products has been added for this release.
  • INPUT ECHO – The input echo processor has been modified so that the input echo precedes the output data. Additionally, the intermediate data generated by the error checker now appears in this listing.
  • B31G – The B31G criteria for the remaining strength of corroded pipelines has been incorporated. This module includes the original B31G criteria as well as several of the modified methods discussed in the Battelle project.
  • OUTPUT PROCESSOR – A new report has been added to the output processor which generates a Restraint Summary report. This summary details all the loads for all selected load cases for each restraint in the model.
  • THERMAL BOWING – The effects of thermal bowing on horizontal pipes can be analyzed. By specifying the thermal gradient between the bottom and the top of the pipe, CAESAR II will compute the loads induced and include them with the thermal loads.
  • 32 BIT MODULES – All of the dynamic modules have been moved from the 16 bit mode to the 32 bit mode. Additionally, the animation program now supports EGA and VGA display modes.
  • TITLE PAGE TEMPLATE – A user configurable ASCII text file can now be used as a title page template.
  • INTERFACE UPDATES – The CAESAR II data matrix interface and the Autoplant interface have both been updated to utilize the currently active units file. The ComputerVision interface has been updated to handle “tube” type piping.
  • EXPANSION JOINT RATING – The expansion joint rating module, ERATE, has been moved into the “Miscellaneous Module”, facilitating input via the standard spreadsheets.
  • REFRACTORY LINING – The computation modules of CAESAR II have been modified to accept a negative value of insulation thickness. If a negative thickness is encountered, the program will assume the insulation is refractory lining (inside the pipe).
  • MINIMUM REQUIRED THICKNESS – The piping error checker now makes the “minimum required thickness” computation according to B31.1, 104.1. This information is reported for each pipe in the listing of intermediate data (See item 3 above).
  • SPRING HANGER TABLES – The E. Myatt & Co. spring hanger table has been added.
  • ESL UPDATES – All of the code used to access the ESLs has been updated to allow access to the 50 and 66 Mhz CPUs.
  • MISSING MASS – The dynamics modules can consider missing mass effects in the spectrum solutions.
  • SEISMIC ANCHOR MOVEMENTS – The dynamics modules will allow the specification of seismic anchor movements for independent support motion analysis.
  • RCC-M – The French piping code RCC-M, Section C has been incorporated.
  • LANGUAGES – The input and dynamic output supports English, French, and Spanish language headings. Language dependent files can be activated with the appropriate command line switch on the INSTALL directive. For example, INSTALL /S will install any Spanish specific files.
  • PCX Files – All of the graphics modules have been modified to allow the images to be saved to disk files in PCX format. This will enable these images to be brought into word processing and desktop publishing systems.

CAESAR II Version 3.18 Features (9/92)
    • The Canadian codes Z183 and Z184 have been revised according to the 1990/1992 publications.
    • The Italian spring hanger manufacturer INOFLEX has been added.
    • The “Data Base” option of the configuration program now allows the user to set the desired valve and flange data base. Additionally a data base excluding flanges (NOFLANGE) is included.
    • The material data base used for the Flange Stress/Leakage module has been updated. The new data base includes all changes from the ASME Sect VIII, Division 1, A91 Addenda, the materials are listed in code order, and the number of materials has increased from 450 to 1100.
    • The structural modules (C2S and AISC) have been updated to work with the German structural steel library, which is also included.
    • A new neutral file interface is provided which allows a two way transfer of data between the CAESAR II input file and an ASCII text file.
    • An interface is provided between Stoner’s LIQT program and the dynamic modules of CAESAR II. This interface enables dynamic pipe forces from a time domain analysis to be used in the generation of a force spectrum.
    • The static stress summary report has been modified so that the maximum code stress percent is reported, not the maximum code stress.
    • A “miscellaneous” option has been added to the configuration program. This option allows various options, including the specification of either the ANSI, JIS, or DIN piping specifications.
    • Other options available from the “miscellaneous” menu are:
      • This option can be used to disable the display of the initial entry screen and the final exit screen.
      • Yes/No Prompts (On/Off) – This option can be used to disable the yes/no/are_you_sure prompts.
      • Output Reports by Load Case (Yes/No) – By default, CAESAR II produces static output reports by load case. This option can be used to generate the same reports by subject.
      • Displacement Report Node Sort (Yes/No) – This option can be used to disable the nodal sorting of the static displacement report.
    • The file handler has been modified to enable directory and disk drive selection and logging. The initial display of the file names can also be controlled by the user. This allows the user to set the sort order as well as the single/multi-column display presentation.
    • A file verification routine has been added to check the installation of CAESAR II. This will aid in detecting program corruption due to hard disk defects and viruses.
    • A new report has been added to the static output menu. This will enable users to obtain a “local force/moment” report for the elements in the system.
    • A 32 bit version of the dynamic summation module is provided for large dynamic analysis. Note, this module requires at least a 386 processor.
    • The animation module has been modified to provide hard copy output of the mode shapes.

CAESAR II Version 3.17 Features (3/92)
  • Support of the DOS environment is now available in CAESAR II. This allows users to run the software from various subdirectories on the hard disk, other than the installation directory.
  • Facilities have been provided to enable the user to modify the default colors used throughout the CAESAR II program. Four predefined sets of text colors are provided as well as the ability to modify whichever set is currently selected.
  • The utilities menu has been expanded to include all of the secondary CAESAR II processors.
  • Help has been added for the input graphics, the Pen Plot graphics, and the WRC 107 program.
  • A new on-line error processor has been incorporated. This enables the software to provide the user with an explanation of the cause of many of the fatal error messages, as opposed to the display of only the error number.
  • The file handler has been modified to allow the manual entry of a new job name.
  • The input piping preprocessor now includes a material number (21) for “User Defined” materials.
  • The static and dynamic output menus have been modified to allow the user to return directly to input, or in the case of the dynamics output, to invoke the animation module directly.
  • Graphics for flange selection and output have been added to the ASME flange modules.
  • Input and output file sequencing are checked to aid in Quality Assurance, insuring that the current input file produced the current output file. Input echo reports are also possible from the static output processor.

CAESAR II Version 3.16 Features (12/91)
  • The internal file maintenance utility has been completely rewritten. The new file handler provides the same capabilities as the previous file handler but with faster response times. Additionally, the new file handler is compatible with disk partitions larger than 32 Mbytes, and manipulates the data files created by Versions 3.xx of CAESAR II.
  • A configuration program has been added to CAESAR II to allow users to modify the SETUP.CII file from spreadsheets. The configuration program also includes the standard COADE help interface to facilitate setting the directives.
  • The structural programs (C2S and AISC) have been revised to access either the 1977 AISC data base or the 1989 AISC data base. Additionally, the AISC program has been updated to perform the unity checks (code compliance) using the 1989 code, which includes the methodology for checking single angles.
  • The equipment module (ROT) has been enhanced to handle vertical inline pumps for API-610, 7th Edition.
  • The Stoomwezen 1989 (Dutch) piping code has been added.
  • Three additional spring hanger tables have been added (Basic Engineering, Capitol Pipe Supports, Piping Services Company).
  • The editors found in the structural preprocessor, the ASCII file editor, and the piping preprocessor title page have been modified to allow the insertion and deletion of single characters. Appropriate screen instructions are provided where necessary.
  • An “automatic loop closure” command has been added to the piping preprocessor.
  • A “jacketed pipe” example has been included in the documentation. The input file for this example is included in the EXAMPLES set on the distribution diskettes.
  • Updated modulii of elasticity for default CAESAR II materials based on 1990 code revisions.

CAESAR II Version 3.15 Features (9/91)
  • The installation program utilizes the file compression routines from PKWARE. This significantly reduces the number of diskettes distributed and the time needed to install the CAESAR II package.
  • Flange Leakage and Stress Calculations. Elastic models of the annular plate, gasket and bolts predict the relative degrees of gasket deformation leading to a leaking joint. Stress calculations in accordance with ASME Sect. VIII Div. 1 are also provided for comparison.
  • WRC 297 Local Stress Calculations. This bulletin supplements WRC 107, and in addition computes stresses in the nozzle as well as the vessel.
  • Stress Intensification Factor Scratchpad. The new module shows the effects of the various code options available in CAESAR II, and illustrates the relationship between the various interpretations. WRC 329 SIF options are included. SIF’s for stanchions on elbows are also computed.
  • A pen plotting program (PENPLT) plots up to 2500 element models (LARGE Includes) on the screen or on an HPGL compatible hardware device.
  • The static output processor has been updated to support VGA graphics and to provide screen dumps to HP Laser Jet Series II compatible printers.
  • Updated SYSCHK program now checks that SHARE is loaded when necessary. Missing coprocessor is also immediately reported.
  • Updated PLTS now allows users to save labels, scaling information, and file names during plotting sessions.
  • Updated ROT (rotating equipment program) provides additional code interpretations for the HEI bulletin.
  • The BIGPRT (large job printing program) has been expanded to handle even larger jobs and to provide a “local” element report.
  • As of Version 3.15, CAESAR II will utilize the ESL devices to authorize access to the program. The ESLs are more stable than the previously used keydisk and provide additional client information to the program. Additional information on the ESLs can be found in the update pages for the User’s Manual.
  • Please note, the first access of Version 3.15 will cause the ESL activation code to prompt for the keydisks (both unlimited and limited). Both keydisks must be available to properly activate the ESL.
  • A printer setup program (PRSET) is provided to adjust the number of lines per logical page for dot matrix printers. Users with page lengths longer than 11 inches will find this program very useful.

CAESAR II Version 3.1 Features (11/90)
    • 1) Instantaneous center-of-rotation calculation
    • 2) Element Highlight
    • 3) Element Range
    • 1) API 610 7th Edition Addition
    • 2) SI/User Units
    • 3) HEI Additions
    • 1) Simplified input
    • 2) WRC 297 stress calculations
    • 1) Screen data presentation changes
    • 2) Direct control jumping between executables
    • 3) Increased number of allowed program designed hangers
    • 4) Additional spring hanger design options
  • DATA BASE UPDATES include additional spring hanger tables
  • Soil Modeler for Buried Pipe

CAESAR II Version 3.0 Features (4/90)
  • VGA Graphics support (on input)
  • Interactive (immediate) rotation of the input graphics image
  • Updated graphics user interface
  • Optional WRC 329 implementation of new stress intensification factors for intersections
  • Optional ASME Class 1 flexibility calculations for reduced intersections
  • Optional WRC 329 fixed to B31.1 and B31.3 piping code equations
  • Piping codes: B31.4, B31.8, ASME Sect III Class NC and ND, CAN Z184 and Z183, Swedish Power Methods 1 and 2, BS806.
  • Updated SIF library to include welded joints and Bonney Forge fittings
  • New scrolling help screens
  • Editing list features, including rotate/duplicate of total or partial models
  • Updated WRC 107 table limit check
  • AISC member check
  • Wind load calculations on structural members
  • Additional stress equation control via the SETUP file
  • Numerical sensitivity checks in both the incore and out-of-core solvers
  • Automatic expansion joint modeler using manufacturers data base
  • Additional restraint types including bottomed-out spring hangers and bi-linear soil springs.

CAESAR II Version 2.2B Features (9/88)
  • LARGE ROTATION SUPPORTS – Allows large rotation supports to be handled properly, by computing the support forces in all three global directions. Rod and Chain hanger supports can be modeled now.
  • NONLINEAR OUT-OF-CORE SOLVER – This new solver increases the range of problems CAESAR II can solve by allowing nonlinear solutions to be performed on the hard disk. This capability is necessary when a job is too large to be solved in memory.
  • FRICTION REPORT – Friction is a non-conservative force, and CAESAR II treats it as such. The restraint reports will now show restraint loads due to friction for each load case.
  • NEW EXTERNAL INTERFACE HOOKS – A new interface module will allow smooth interface to data conversion modules between CAESAR II and other programs, such as AutoCAD. A new AutoCAD DXF interface is provided, and two third part vendors have completed interfaces from their AutoCAD iso packages to CAESAR II.
  • ASCII EDITOR – Due to an overwhelming need and subsequent lack of easy to use system editors, a stand alone ASCII editor is being provided. This editor will enable users to easily modify files such as AUTOEXE.BAT, CONFIG.SYS, and SETUP.CII.
  • 2D XY ENGINEERING PLOTTING PROGRAM – A stand alone plotting program is provided to allow users to plot engineering data, such as CAESAR IIspectrum files. This program will plot any “real” data arranged in columns.
  • VALVE & FLANGE DATA BASE – The addition of a valve & flange data base enables the user to define/select the specific rigid element to be inserted into the piping system. The data base is constructed to allow user additions and/or modifications.
  • DYNAMIC RESTART – The most time consuming part of a dynamic analysis is the Eigensolution. This feature allows a job to be restarted and use a previous Eigensolution.
  • WRC UPDATES – The latest edition (1979) of the WRC107 bulletin has been incorporated.
  • INPUT TITLE PAGE – An optional title page has been added to the input module of the program. Users can now define a title page of up to 19 lines, which will be stored with the input.
  • EXPANSION JOINT RATING PROGRAM – This stand alone program allows the user to compute the compression of each expansion joint corrugation and the compression of the joint as a whole. These values can then be compared to manufacturer’s recommendations for joint acceptance.

CAESAR II Version 2.1C Features (6/87)
  • Uniform and Independent support shock spectrum capability.
  • Force Spectrum Dynamic Analysis of Fluid Waterhammer.
  • Force Spectrum Dynamic Analysis of Relief Loads.
  • Force Spectrum Dynamic Analysis of Wind Gust Loads.
  • Fluid Mechanics Analysis of Gas or Liquid open vent relief system. Includes vent stack sizing, thrust, and pressure rise computations.
  • NRC Dynamics Benchmarks for: NUREG/CR-1677, BNL-NUREG-51267, Vol.I, 1980; and NUREG/CR-1677, BNL-NUREG-51267, Vol.ii, 1985.
  • Dynamic “Friction” modeling based on static load case results.
  • Eleven (11) pre-defined shock spectra including all Reg. Guide 1.60 spectra and the El Centro North-South component spectra.
  • Improved Harmonic Analysis including the effect of “phased” loading relationships. (Allows modeling of eccentrically loaded rotating equipment.)
  • Improved dynamic output processor, includes user defined headings and user comments.
  • Animated static and dynamic solutions with structural members and hidden line volume plots.
  • Improved EIGENSOLVER many times faster than earlier algorithms, with automatic out-of-core solution mode.
  • Updated Static Analysis Load Case Processor.
  • New Friction Algorithm with interactive control during solution of nonlinear restraints.
  • Improved Output file handling of various solution methods.
  • Ability to abort any function at any time during a session using the <ESC> key.
  • New keydisk, memory protection scheme.
  • Hardware/Software QA capability for analysis verification.

CAESAR II Version 2.0A Features (10/86)
  • AISC STRUCTURAL STEEL DATABASE with over 800 different structural steel cross-sections.
  • KEYWORD/BATCH STRUCTURAL STEEL PREPROCESSOR: Same quality CAESAR II graphics with structural steel volume plots, interactive error checking, extensive interactive help, and fully compatible with CAESAR II piping models.
  • HIGH RESOLUTION GRAPHICS: EGA support for monochrome and 640×350, 16 color more. Tecmar Graphics Master support for monochrome and 640×200, 16 color mode. Hercules support for monochrome 720×348 mode.
  • GRAPHICS: Addition of “PAN” and “RANGE” options, improved Zooming, stresses and displaced shapes in color, hidden lines removed from volume plots, and pipe and structure plotted together.
  • 3D-GRAPH: Option to plot stresses for all nodes for all load cases on the same plot.
  • SIMULTANEOUS USE OF TWO SCREENS: One monochrome and the other graphics.
  • UNITS: English and SI standard options, or user may define his own set of unit constants and labels. Output may be generated in multiple unit sets, and input files may be converted from one unit set to another.
  • WIND LOAD CALCULATIONS: According to ANSI A58.1-1982, or user may input his own velocity or pressure versus elevation tables.
  • PIPE/STRUCTURE “INCLUDE” OPTION: Piping input from one file may be included in another with a given node and rotational offset.
  • QUICK NATURAL FREQUENCY RANGE CALCULATIONS: Computes the number of natural frequencies in any user given range in the amount of time needed to do a single static solution.
  • SETUP FILE DIRECTIVES: Users may set the following CAESAR II execution parameters:
    • a.) Graphics hardware configurations
    • b.) Colors for over 27 different plotted items
    • c.) B3.1 reduced intersection options
    • d.) Plot/Geometry connection through CNODES options
    • e.) Corroded cross section stress calculation options
    • f.) Minimum and Maximum allowed bend angle options
    • g.) Occasional load factors
    • h.) Loop closure tolerance

CAESAR II Version 1.1S Features (2/86)
  • Help Windows
  • AutoCAD Interface
  • HP Plotter Interface
  • Batch Execution Opinion
  • Accounting System
  • File Handler
  • Spooled Input Listings
  • Uniform Load in G’s
  • Liberal Code Stress Allowable
  • Cursor Pad and Function Key Implementation in Input Spreadsheets
  • Plot Menu Single Keystroke Access
  • Stainless Steel Pipe Schedules
  • Direct Input of Specific Gravity
  • Bourdon Pressure Options
  • Hanger Control Spreadsheet Updates

CAESAR II Initial Capabilities (12/84)
  • Input data spreadsheets featuring data duplication to the next pipe element
  • Vessel local Flexibility Calculations
  • Multiple load case spring hanger design
  • Algebraic load case combinations
  • Nonlinear restraints with gaps, friction, 2-node, and skewed options
  • Zero or finite length expansion joints with “Tension Only” tiebars
  • Built in data base of pipe materials and properties
  • B31 code compliance reports
  • Static and dynamic capabilities, including animated mode shape plots
  • Extensive input/output graphics
  • Pressure effects on bends, including consideration of circular or slightly oval cross-sections