What is New?

Enhancements & Bugfixes to CAEPIPE

CAEPIPE Version 5.21 December 24, 2007

•	Units conversion between Spectrum unit types for the ordinate (Y-axis) is now possible, for e.g., between inch and mm., g's and in/sec2.
•	User can now import multiple Time functions from a text file. Each function should be separated by a delimiter "-1.E11". See example.
•	Valve element has a new field called Valve Type. This information will be used in upcoming versions to differentiate between types of valves by changing the symbols during rendering.
•	Hanger has a new field called "Hanger above". This should be used to specify whether the Hanger is connected above or below the pipe. Graphical symbol changes accordingly. Valid only for Hanger and User Hanger and not for Constant Support Hanger and Rod Hanger.
•	User can change the Yield Displacement factor (between 0.04 to 1.0), used to calculate the initial stiffness in Buried piping analysis. See Options menu->Analysis->Misc in the Layout window. We recommend no changes unless there is a problem with convergence in the Buried Piping section of analysis.
•	New feature to export the 3D piping model to PDMS as structural components (only graphics without attributes). This can be performed through File->Export to 3D Plant Design from inside the Layout window.
•	API 617 is updated to Seventh edition (June 2003). See ReadMeSupplement_521.pdf for details.
•	Bug Correction: For API 617, the resultant force and moments were resolved with respect to Exhaust Nozzle and not to Largest connection. This bug exists in CAEPIPE versions up to 5.15.
•	Bug Correction: When Piping Code = EN13480, program crashed when trying to print the occasional stress contour plots.
•	Bug Correction: Pressure field was not disabled when reviewed through Results window->Window menu->Layout->Options->Analysis leading to an "Assertion failure."
•	Bug Correction: Data types such as Anchor, Guide or Restraints placed on JPIPE and JBEND element types were not rendered properly.
•	Bug Correction: It was not possible to enter more than four characters in the "From/To" fields of Distance measurement command through Coordinates List window->View menu->Distance.

CAEPIPE Version 5.15 March 1, 2007

•	Piping code B31.3 is updated to B31.3 (2004). Refer Appendix-A of ReadMeSupplement_515.pdf for more details.
•	Buried (Restrained) Piping Stress calculation is now available for B31.8 (2003). Refer Appendix-A of ReadMeSupplement_515.pdf for more details.
•	ISO standard sections are now included in CAEPIPE.
•	Material properties of B31.3 (existing materials in B313.mat) are updated in accordance with B31.3 (2004). The new material library is named as B313-2004.mat
•	Material library for EN13480 is now included in CAEPIPE.
•	Grinnell (Anvil International) hanger catalog has been updated to include two new ranges, Triple and Quad.
•	Maximum number of elements permitted in a CAEPIPE model is increased from 5000 to 7000.
•	New feature added to print .CSV file with Forces, Stresses and Sorted stresses for FRP piping.
•	Bug Correction: Skewed Restraint with 'Connected To' node garbled the image during zooming operation.
•	Bug Correction: Component directions were not printed correctly in Support loads output screen for skewed restraints.
•	Bug Correction: Snubbers were not turned ON for seismic displacement case and hence seismic displacements were not included in "Snubber Loads" calculations.
•	Bug Correction: Access Violation error occurred when user tried to define a flange without defining the section properties.
•	Bug Correction: Closing the OPTIONS dialog changed the piping code to 'Default', when user selected the piping code as 'NONE'.
•	Bug Correction: CAEPIPE issued error message during mbf import when both lower and upper limits of limit stop equaled 0.00.
•	Bug Correction: Elements defined using absolute coordinates in the layout were not Exported/Imported properly through .mbf file.
•	Bug Correction: When piping code = B31.1 (2004) and B31.8 (2003), Liberal Allowable Stresses option was not turned ON and was not editable for CAEPIPE models developed using CAEPIPE versions earlier than 5.13. Please note, as per the current requirement of these codes, this option should always be turned ON, which CAEPIPE sets automatically.
•	Bug Correction: In FRP Stresses reported, the pressure term was included under hoop (pd/2t) and axial stress computations (pd/4t) for "pure" WIND and SEISMIC load cases.

CAEPIPE Version 5.14 May 8, 2006

•	Support for Model Batch Format (MBF) is improved. With this new format, almost all elements and data types (available in the CAEPIPE .mod binary file) may be exported/imported from/to CAEPIPE. Refer Appendix-A of ReadMe_Supplement_514.pdf for more details.
•	New graphics feature is introduced to show/hide a specified number of rows from the graphics view. Using this feature, you can unclutter areas of your piping model to either selectively view or plot (print) the images. This feature is not available from the Results Window. The feature can be accessed via Graphics window->menu View->Show/Hide Specified Elements.
•	Buried (Restrained) Piping stress calculation is now available for B31.4 (2002). Refer Appendix-B of ReadMe_Supplement_514.pdf for more details.
•	Your CAEPIPE license's ME&S (Maintenance, Enhancement and Support agreement) expiry date can be viewed through menu Help->Check ME&S.
•	Name and release year of piping code is included in the Sorted Stresses ratios rendered graphical plot.
•	For Piping code = B31.8 (2003), the pressure stress option [PD^2/(D^2-d^2)] given in menu Options > Analysis > Pressure is disabled as per the code requirement.
•	Graphics editing feature can be turned ON/OFF through Main Window->menu File>Preferences...->Disable graphics editing. Reason: For a few graphics cards (notably from nVidia and ATI) under Windows-XP (R) operating system, graphics editing may garble the image. If this happens, changing either the graphics card or downgrading the operating system (to Windows 2000) avoids the problem. Since either of these solutions is impractical, we have introduced a feature to turn OFF graphics editing. Documented incompatibility between OpenGL and Windows XP seems to be the root cause. We hope the new Windows Vista release will rectify the incompatibility issue.
•	Edit dialog for DX/DY/DZ is now available in the Layout window. Double clicking under any of DX/DY/DZ opens a dialog for you to edit the offsets (or coordinates for From type). Or, right-click on an offset and select Edit... to edit the offsets.
•	Bug Correction: Allowable Pressure calculation for Bends was not properly calculated when piping code = EN13480 (2002). This problem exists in Versions 5.11, 5.12, 5.12A and 5.13.

CAEPIPE Version 5.13 November 2, 2005

•	Facility to create and save user-defined Beam Section Library. From the opening window, select File > New > Beam Section Library.
•	Facility to select the Beam Sections from user-defined Beam Section Library or from the built-in AISC Library. From the Layout window, select Misc > Beam Sections, and then File > Beam Library or File > AISC Library in the List window.
•	The normalized vector for Beam Elements can now be displayed when the user clicks on a Beam Element in the Graphics window or double clicks on Beam to display the Beam dialog (in the Layout window or List window).
•	Option to Show/Hide the "Deformed State Coordinates" in the Displacements results window along with the Displacements in global coordinate system via Results window > View > Show/Hide Deformed State Coordinates or mouse right click > Show/Hide Deformed State Coordinates.
•	New graphics utilities have been introduced. These utilities help a user see pipes hidden from view by making the pipe in front "transparent or hidden." In the past, a user had to rotate the model to see hidden piping in a congested piping layout.
1.	1. Hide the current element from the Rendered Graphics Window via View > Hide Current Element or mouse middle click > Hide CE, or press F6.
2.	Make the current element transparent in the Rendered Graphics Window via View > Make Transparent or mouse middle click > Make CE Transparent, or press F7.
3.	Select and hide the element via mouse middle button click on element > Hide from Graphics.
4.	Select and make the element transparent via mouse middle button click on element > Make Transparent.
5.	Show all Hidden objects through Graphics Window > mouse middle click > Show all or View > Show all, or press F9.
6.	Make all objects Transparent via View > All Transparent or mouse middle click > Make all Transparent, or press F10.
7.	Make all objects Opaque via View > All Opaque or mouse middle button click > Make all Opaque or F11.
•	Option to print all input and results data to a comma separated values file (.csv) through File > Print > Print to File in addition to printing to a plain text file. This .csv file can be imported into spreadsheet software (e.g., MS-Excel).
•	When Piping Code = NONE, in-plane and out-of-plane loads and SIFs for tees are calculated based on B31.3 (2002). Earlier version calculations were based on B31.1.
•	When Piping Code = B31.1 (2004), the analysis option "Use liberal allowable stresses" is always turned ON.
•	In this version, when Piping Code = B31.4 (2002) or B31.8 (2003), stresses for the buried piping portion are calculated against allowables as per the code equations for "Unrestrained Piping." In other words, the code stress equations for "Restrained Piping" (or Buried piping) are not yet implemented and hence, the code stress results displayed/printed for buried portion of piping should be ignored.
•	Warning message issued when the Bend Radius is less than the outer diameter of the pipe section.
•	Warning message issued when peak pressure factor exceeds 1.10 for Piping Code = B31.4(2002). This is a code requirement as per para. 402.2.4 of B31.4 (2002).
•	Warning message issued when user tries to delete an element that is referenced by another element via connected node.
•	Bug correction: When Piping Code=NONE was chosen, Von Mises stresses were missing from the text file generated by using the "Print to file" command.

CAEPIPE Version 5.12 April 22, 2005

•	Guide forces in global coordinate system are "Print(ed) to file" (in addition to forces in local coordinate system). Download ReadmeSupplement_512.
•	Support load summary can be included in the "Print to file" option (in addition to inclusion in formatted reports).
•	A warning message is issued when t/T ratio for a WRC-297 nozzle input is less than 1.0 as per WRC-297 Bulletin.
•	Hotkey combination CTRL+ENTER (for duplicating the last layout row) now also works for Beam Elements (in addition to PIPE and JPIPE).
•	Renumbering element node numbers in a portion of a piping system will also renumber all those nodes of this portion that appear as "connected to" nodes in the remaining portions of the piping system.
•	The Analysis option "Include Hanger Stiffness" is now applicable only to Variable Spring Hangers and User Hangers and not to Rod Hangers. For Rod Hangers, the "Include Hanger Stiffness" is always turned ON internally.
•	A new feature to Freeze/Unfreeze the graphics view is now available. This feature can be enabled/disabled by pressing the function key F8 in the graphics window. This feature is also available in two more places in the graphics window, i.e., Graphics Window->View->Freeze/Unfreeze View (Toggle) and Graphics Window->Mouse Right Click->Freeze/Unfreeze View (Toggle). The details on this implementation are listed below.

1.	The option "Freeze View" disables the dynamic updating of view (i.e., view remains unchanged) when the user scrolls in the Layout window.
2.	User can still perform the Zoom, Pan, Rotate, etc., with the frozen view. The new view thus obtained after performing such operation becomes the new frozen view.
3.	The addition of new element in the layout window will update the graphics and can be seen immediately, if the new element added is available within the display region shown in the graphics window.
4.	The dynamic updating of view can be enabled by pressing F8 again or by selecting the Graphics Window->view->Unfreeze View.

•	Bug Correction: Sometimes limit stops were not rendered properly.
•	Bug Correction: If the piping code = none, the selection of Modal Analysis without selecting the Static Analysis gave an assertion failure during analysis.
•	Bug Correction: Unchecking any box on "Show Nodes" option dialog removed the node numbers on those Limit Stops, Hangers, Guides, etc., which were defined using "Location" card.

Following piping codes are updated. Please see Annexures A and B for details.

•	B31.1 (2004)
•	B31.3 (2002)
•	B31.4 (2002)
•	B31.5 (2001)
•	B31.8 (2003)

Material properties are updated for existing materials.

•	B31.1 (2004)
•	B31.3 (2002)

Please verify the properties in these libraries before you use them.

New material libraries are available.

•	B31.4 (2002)-29 materials added (filename: b314-2002.mat)
•	B31.5 (2001)-15 materials added (filename: b315-2001.mat)
•	B31.8 (2003)-40 materials added (filename: b318-2003.mat)

Please verify the properties in these libraries before you use them.

•	New feature added for creating user definable valve library. A new valve library can be created from menu File > New > Valve Library. Refer Annexure D for more details.
•	Cast Iron, Steel and Alloy Valves (Flanged and Butt Welding ends) libraries are provided. The Type of Valve, Connection Type, Rating and File names are listed in Annexure C. User needs to input only weight of the valve. In the valve dialog, click on "Library" and navigate to the location where files are available.
•	Bug Correction: For piping code = Swedish (1978), during new material library creation, the columns for "Longitudinal Joint Factor" and "Allowable Stress" were missing.
•	For piping code = none and material not equal to FRP, the in-plane and out-of-plane Stress Intensification Factors (SIF) for a 90 deg bend/elbow are taken to be the same as those computed using ANSI B31.3 (2002). For a bend with bend angle less than 90 deg, the in-plane SIF is computed using the procedure given in ASME/BPVC Section III, Division1, Case N-319-2 "Alternate Procedure for Evaluation of Stresses in Butt Welding Elbows in Class 1 Piping". Refer ReadmeSupplement_v511.pdf file for details.

CAEPIPE Version 5.1JB July 17, 2003

•	Bug correction: For some models, Zoom all button in graphics drew image in one corner of graphics window.

CAEPIPE Version 5.1JA June 6, 2003

•	When length units are specified in inches, lengths, dimensions and displacements are displayed with 4 decimal places.

New CAEPIPE User's Manual released (July 17, 2003)
Download if you do not already have it.

CAEPIPE v5.1J (Apr 17, 2003)

•	B31.1 piping code updated to 2001. B31.1 material properties are not yet updated.
•	For the European piping code EN 13480, the tensile strength (Rm) can be input for a material which is used in calculating fc in Eqn (12.1.3-2).
•	For piping code = none, the SIF for a bend of less than 90 deg is interpolated as follows:
	A scalar multiplier for the B31 90 deg bend SIF can be developed based on ASME/BPVC Section III, Division 1, Case N-319-2, "Alternate Procedure for Evaluation of Stresses in Butt Welding Elbows in Class 1 Piping" which provides rules for bending stress indices for curved pipe of arc lengths between 0 and 180 deg. The in-plane stress indices for varying arc length from Case N-319 are:
	C(2z) = 1.95/h^(2/3) for bend angles of 90 deg or greater [Note, the index is approximately 2 times the B31 90 deg elbow SIF, i.e., the difference between "design by rule" (B31/effective) stresses and "design by analysis" (theoretical) stresses.]
	C(2z) = 1.75/h^(0.56) for a bend angle of 45 deg
	C(2z) = 1.0 for a bend angle of 0 deg (straight pipe)
	The Case states the stress index may be interpolated between bend angles. Thus, a 45 deg bend SIF could be reasonably estimated to be the B31 SIF multiplied by C(2z) for a 45 deg bend divided by C(2z) for a 90 deg bend. Other bend angle SIF's could be interpolated between the given C(2z)'s.
	[Note, however, the effect of arc length will likewise alter bend stiffness which this does not address.]
	For other piping codes, the SIF interpolation will be implemented as an option in a future version.
•	Bug correction: For ASME(1986) and ASME(1992) the butt weld SIF was calculated according to ASME 1980.
•	Bug correction: Hanger loads were not calculated correctly for hydrotest case.
•	Bug correction: Beam sections were not converted properly from version 3.71.
•	Bug correction: Spectrum library was not read properly if it was written in versions 5.1 upto 5.1I.

CAEPIPE v5.1I (Dec 9, 2002)

•	Final version of the European piping code EN 13480 (2002) is now available including the creep equation (12.3.5-1). Creep allowable stresses (fCR) need to be input for the creep temperature range and left blank for temperatures below the creep range.
•	Bug correction: European piping code was not correctly output to batch file.
•	Bug correction: For elastic element input, orthogonality of local x- and y-axes was not checked properly.

CAEPIPE v5.1H (Sep 4, 2002)

•	Print preview for OpenGL rendered graphics is now available.
•	OpenGL rendering quality can be specified as Low, Medium or High by using the command Options > Rendering Quality in the graphics window. Previously, such an option was available only during printing an OpenGL image.
•	Bug correction: During hanger design, nonlinearities were not initialized properly. This bug exists only in version 5.1G. Any model analyzed using version 5.1G must be reanalyzed.
•	Bug correction: In results, skewed restraint directions were not shown properly.
•	Bug correction: While printing to a text file (.txt), if the data type was Branch on thickened pipe or Concave fillet weld, the next line was not printed.

CAEPIPE v5.1G (July 24, 2002)

•	Improved convergence for friction in ball, hinge and slip joints.
•	Number of iterations for modal analysis increased from 999 to 9999.
•	Improved creation of temporary file names.
•	Opening results from main window, the last opened results file name is filled in the dialog. Opening results from the layout window, if the current model has been analyzed, its results file name is filled in the dialog.
•	Anchors are plotted as combination of restraints when some of the stiffnesses are zero.
•	In File menu, Recent Models moved to a position after Open.

CAEPIPE v5.1F (May 17, 2002)

•	A range of elements can be rotated about X, Y or Z axis through a specified angle by using Edit > Rotate command. At present there is no Undo command in Caepipe. If "Undo" is required on rotate command, another rotation for the same range of elements with a rotation which is negative of the previous rotation can be performed. This should be done before any other changes to the model are made.
•	Node numbers can be renumbered for a range of elements by specifying a starting node number and an increment by using Edit > Renumber Nodes command.
•	Disconnected nodes may be detected using the Misc > Check Connections command.
•	Improved graphics for hangers with connected nodes.
•	An environment variable CPITER may be defined to change number of iterations from the default 500. e.g. set CPITER=10000 will change the number of iterations to 10000 before showing the dialog: Continue, Accept or Exit if there is nonconvergence.
•	After an assertion failure or a protection error, the network key license is now released thereby allowing another session to be started.
•	Bug correction: For slip joints, pressure thrust force was not applied properly when friction was present. This bug exists for versions 5.1D and 5.1E only.
•	Bug correction: With Graphics window maximized, opening a model or results file would cause a blank graphics window.

CAEPIPE v5.1E (March 14, 2002)

•	Preliminary version of the European piping code prEN 13480 (2002) is now available.
•	Guide loads are now also available in global coordinates.
•	For ASME (86 & 92) codes, for unreinforced tee, the B2 index is now calculated according to NB-3683.8. Previously the B2 index was conservatively assumed to be equal to SIF.
	For reinforced tee, the B2 index for both run and branch is conservatively assumed to be equal to SIF as before.
•	Presently pressure expansion (Bourdon effect) is treated as thermal expansion and applied to expansion (T) and operating (W+P+T) load cases.
	If an environment variable BOURDONP is set (i.e. set BOURDONP=y), pressure expansion is not treated as thermal expansion (i.e. pressure expansion is treated as pressure expansion and applied to sustained (W+P) and operating (W+P+T) load cases.).
•	Bug correction: Caepipe would crash when a specified displacement was deleted by zeroing all displacements in the specified displacement dialog while the specified displacement list was shown.
•	Bug correction: Tie rod forces were not calculated correctly when the tie rod axis was not aligned with the global X-axis.
•	Bug correction: Beam end releases were not working correctly for Z vertical.
•	Bug correction: Zero length Beams would cause a crash in results while viewing beam element forces.
•	Bug correction: For FRP bend, specified bend SIF was not used, instead SIF = 2.3 was used.
•	Bug correction: Hanger report could not be printed to file when hanger type was Comet.
•	Bug correction: In results, the displacements shown on the screen would not change when the load case was selected using the menu or the load cases toolbar button.

CAEPIPE v5.1D (December 19, 2001)

•	Improved friction modeling for slip joint. The friction is modeled by applying force and torque instead of using equivalent stiffnesses. This also corrects a problem when a limit stop was connected between the slip joint nodes, the friction in the slip joint was ignored.

CAEPIPE v5.1C (November 20, 2001)

•	Maximum number of rows increased from 2000 to 5000 and maximum number of nodes increased from 3000 to 7500.
•	Lisega hangers are now selected according to Lisega catalog recommendations., i.e., for travel upto 10mm, range 1 is selected, for travel up to 20mm, range 2 is selected otherwise range 3 is selected.
	If travel exceeds 40mm, Lisega recommends constant support, however Caepipe does not select it automatically. A constant support instead of a "to be designed" hanger needs to be specified. Also note that the "short range" parameter is ignored for Lisega hangers.

CAEPIPE v5.1B (September 27, 2001)

•	Comet hanger catalog from Pipe Supports Ltd. is now available.
•	Bug correction: FRP stresses were not printed correctly. They were shown correctly on screen and printed correctly to "txt" file.
•	Bug correction: For hinge and ball joints, the option to use friction in dynamic analysis was not used. (Versions 5.1 and 5.1A only, previous versions did not have this bug).

CAEPIPE Version 5.1A (August 29, 2001)

•	Bug correction: For hinge and ball joints, when rotation limits were specified, the friction torque was not correctly applied. The non-linear iteration procedure too was modified for these joints.
•	Bug correction: For flanges at anchors, near bends with zero straight portions, the flange report did not show any flange forces or pressures.
•	Bug correction: If a flange is connected to a non-pressure element such as a beam or an elastic element, an error message is given.
•	Bug correction: For buried jacketed pipes, soil restraints were not generated.
•	Bug correction: Jacketed pipes and jacketed bends were not split properly when the Split command (Edit menu) was used.
•	Bug correction: Mode shapes were not changed from the graphics window (by right clicking and selecting Next mode or Previous mode) when shown from the Frequencies screen in the results window.
•	Bug correction: From the Title row, after clicking on the Type header to open the Element Types dialog and then clicking on Ok to close the dialog produced an assertion failure.

CAEPIPE v5.1 (July 11, 2001)

•	Support load summary is now available (displayed under the Results menu upon entering Output).
•	Force spectrum analysis is now available. Enter Force spectrums and then Force spectrum loads as data in the Layout screen (similar to Time History).
•	Conversion of a time function to a force spectrum is available. After entering a time function (under menu: Misc > Time functions), go to menu: Misc > Force spectrums. Select menu: File > Convert time function command.
•	A new analysis option is added to solve Thermal case = Operating - Sustained, i.e., instead of solving thermal case independently, thermal case results are calculated as the difference between the Operating case and the Sustained case results. This is a recommended procedure to solve thermal cases (T1, T2, T3) especially when nonlinearities (limit stops, friction etc.) are present. Option is available under menu: Options > Analysis...> Temperature.
•	Wind load is now specified as wind pressure versus elevation or wind velocity versus elevation. Previously constant wind velocity was specified.
•	A Hydrostatic test (hydrotest) load case is now available. The hydrotest load is defined by the specific gravity of the test fluid, the test pressure and whether to include or exclude the insulation weight. The hydrotest load can be constant over the whole model or can be changed or even excluded in parts of the model. The hydrotest load is defined by pressing 'h' on an empty row in the Layout screen (similar to pressing 'c' for a comment). This load is applied to the rows that follow till changed by another hydrotest load).
•	A Tie rod element with different stiffnesses and gaps in tension and compression is now available (useful for modeling tierods in bellows, chains etc.).
•	For hinge and ball joints, rotation limits can now be specified.
•	For a guide, a gap and a connected node can now be specified.
•	For a bend, SIF can now be specified (useful for FRP bends). If an SIF is specified, it is used instead of the piping code specified SIF. If a user SIF is also specified at bend nodes (A and/or B nodes), it will be used instead of the bend SIF or code specified SIF.
•	Piping code = None for non-code analysis is now available.
•	For Piping code = None, Von Mises, maximum and minimum stresses are calculated.
•	Node numbers are automatically incremented. When you press Tab or Enter from a blank Node column, an automatically generated node number is assigned. The automatic increment can be turned off by not specifying a node increment. The node increment can be specified by menu: Options > Node increment.
•	If the last row of layout is empty and the previous row is a Pipe or Jacketed pipe, pressing Ctrl Enter will duplicate the DX, DY, DZ and the Data (if the data does not have a connected node and is not a nozzle, an end cap or a branch SIF). The node number is automatically generated, too. So, pressing Ctrl Enter can quickly generate long runs of straight pipe with many elements. This is especially useful for sloped pipes. This command is available under menu: Edit > Duplicate last row. The Node increment must be set to a non-zero number.
•	Slope for an element can now be specified. Using the input length and direction (specified in terms of xcomp, ycomp and zcomp which could be direction cosines), DX, DY, DZ for the element is calculated and entered on the Layout screen. This can be used to change the element length, too. Slope is available under menu: Edit > Slope.
•	Clicking on DX, DY, DZ headers or right clicking or double clicking in the DX, DY, DZ columns brings up a menu for editing. You can Insert or Delete a row, split or specify Slope to an existing element.
•	Color-coded stresses are now shown by pressing the stress or stress ratio buttons in the Sorted stresses window. Previously, pressing the Render button in the graphics window showed them. Whether to show color-coded stresses/ratios or show values of stresses/ratios is done by the menu: View > Color code stresses.
•	Animation of the deflected shape is now possible. A button on the toolbar in the Displacements results screen or menu: View > Show animated deflected shape may be used.
•	Jacket pipes are now rendered transparent so core pipes can be seen through them.
•	Center of gravity calculation is now available. It can be seen in Results under the View menu.
•	Revised material properties. The most significant change is the density of carbon steel that changed from 0.280 to 0.283 lb/in3.
•	The status of Layout and List windows is saved with the model so the model can be opened in the same state as when it was saved.
•	An attempt is made to save model (if modified) after a crash or assertion failure.
•	In the startup window, the shortcut for "Open last model" changed from "Ctrl+Shift+O" to "Enter"; so pressing "Enter" in startup window will open the last model. Also the mouse is placed on the "Open last model" button so it can be clicked (without moving) to open the last model.
•	For API 610 (8th Edition), the allowable principal stress for vertical inline pumps was changed from 6000 psi to 5950 psi to be consistent with 41 MPa in SI units.
•	Some context sensitive help is available. Click on '?' button in the dialog (if shown) or press F1 for context help. Also in the list window, for some lists, pressing F1 will bring up context sensitive help.
•	Bug correction: In modal analysis, the rod hanger stiffness was used from the previous load case rather than the first operating load case. Thus if load cases existed between the first operating load case and modal analysis (such as operating case2 (W+P2+T2), wind, seismic etc.) proper rod hanger stiffness was not used.
•	Bug correction: Snubber loads for time history and harmonic response load cases were not printed.
•	Bug correction: Specified displacements for nozzles were not shown in graphics.

CAEPIPE v5.02J (April 9, 2001)

•	Bug correction: B31.1(1998) has revised effective branch wall thickness calculation for reduced outlets for equations 11 and 12. Caepipe was still using B31.1(1995) method.

CAEPIPE v5.02I (February 15, 2001)

•	Bug correction: When an item was clicked to edit in the graphics window, a subsequent click in the Layout window sometimes caused an assertion failure.

CAEPIPE v5.02H (January 23, 2001)

•	Bug correction: Caepipe sometimes crashed when opening a model from results.

CAEPIPE v5.02G (November 22, 2000)

•	Bug correction: The hanger analysis which was modified in v5.02F gave incorrect results when option to exclude hanger stiffness was used. The hanger analysis is now reverted to previous versions so that cold loads are used when hanger stiffness is included and hot loads are used when hanger stiffness is not included.
•	Bug correction: When a model with hangers was analyzed and results reviewed, returning to the input and modifying and reanalyzing the model gave different results.

CAEPIPE v5.02F (June 26, 2000)

•	Updated piping codes:
	B31.1 (1998)
	B31.3 (1999)
	B31.4 (1998)
•	Updated rotating equipment reports:
	API 610 (8th Ed. 1995)
	API 617 (6th Ed. 1995)
	NEMA SM-23 (1991)
•	For pumps, the center must be input.
•	Hanger analysis is modified so that cold loads are used whether hanger stiffness is included or not included. Previously cold loads were used when hanger stiffness was included and hot loads were used when hanger stiffness was not included. Note that this change affects only when the option to exclude hanger stiffness is used and user hanger load is hot load and hanger stiffness is comparable to the piping system stiffness (i.e.) the piping system is very flexible.
•	Limit stops with connected nodes are now rendered.
•	For limit stops, local coordinate system is now shown (presently without connected nodes).
•	Ball joints and hinge joints connected to beams are now rendered.
•	OpenGL rendering is again available for 256 color graphics cards.
•	Bug correction: Models with mixed units (English, SI etc) can now be properly exported to batch files.
•	Bug correction: For FRP material Alpha was not shown.
•	Bug correction: For reducers, knuckles and delta were not shown in the list screen and were not printed.
•	Bug correction: For some viewpoints Rendered image was not shown.

CAEPIPE v5.02E (Mar 2, 2000)

•	AISC library for beam sections is now available. In the Beam Sections list window, use File > AISC Library command or click on the Library button.
•	Improved printing with print preview is now available. Use File > Print command from both text and graphics windows.
•	File > Print to File command is moved to under the File > Print command. The "Print to File" extension is changed from "prt" to "txt".
•	Options > Toolbar in the Layout window is moved to under File > Preferences in the main opening window.
•	OpenGL rendered graphics can now be printed. Select File > Print in the Graphics window after rendering image. Select between Low or Medium or High for Resolution, and Black or White for Background color.
•	In the Print Results dialog, if the Shift key is held down while clicking All or None buttons, the action will apply to only that tab page (e.g. Model page) rather than all the pages.
•	The Copy command (Ctrl+C) can be used from the graphics window to copy graphics to the clipboard. The shortcut for "Center" is now changed to Ctrl+Shift+C.
•	The shortcut for delete is changed from Ctrl+Del to Ctrl+X.
•	CAEPIPE.INI is no longer used. Program settings such as piping code, units, window locations, etc., are stored in the Windows registry for each user. It is not necessary to define environment variable "CAEPIPE" for a network version.
•	With the mouse depressed on Zoom in or Zoom out buttons (in the graphics window), continuous zoom in or out is now possible. Previously, each mouse click could zoom in or out only once.
•	Turn button on the graphics toolbar is now available. To rotate the model, scrollbars may be used.
•	Nozzles, snubbers and skewed restraints are now rendered.
•	OpenGL rendering is no longer available for 256 color graphics cards.
•	Batch input (using File > Import command from main window) and output (using File > Export command from layout window) are now available. (same as KIN and KOUT in the DOS versions of CAEPIPE).
•	Bug correction: Limit stop direction was not shown properly in the support loads. The limit stop loads are not affected by this.

CAEPIPE v5.02D (Oct 28, 1999)

•	For a limit stop, when a connected node is present, the direction can also be specified. This is especially useful when the connected node is coincident with the limit stop node.
	The limit stop direction must be specified when there is no connected node or there is a coincident connected node. If there is a non-coincident connected node and the direction is also specified, that direction will be used, otherwise the direction is calculated from connected node to the limit stop node.
	In previous versions, when a connected node was present, the limit stop direction was calculated from the limit stop node to the connected node. This required the specification of limits in a "non intuitive" way.
	Similarly for a skewed restraint, when a connected node is present, the direction can be specified which is especially useful when the connected node is coincident with the skewed restraint node.
•	Bug correction: Skewed restraint loads were not properly calculated when connected node was specified.
•	Bug correction: For Swedish and Norwegian codes, the pressure component of stress (i.e. pd/4t) used nominal wall thickness rather than usable wall thickness which subtracts corrosion allowance and mill tolerance from nominal thickness.

CAEPIPE v5.02C (Sep 29, 1999). v5.02B (Sep 19, 1999), v5.02A (Sep 8, 1999)

•	Color coded stress and stress ratio: Click on the Render button in the graphics window toolbar when stress or stress ratio is plotted to see color coded stress or stress ratio.
•	When a hanger is input, the defaults are set to the previous hanger (if available). (v5.02B)
•	Bug correction: Beams were not rendered correctly for Z vertical, however the results of analysis were correct. (v5.02B)
•	For ASME Class 2 piping code (1986 and later), branch connection stresses for sustained and occasional loads are calculated according to NB-3683.1(d). (v5.02A)

CAEPIPE v5.02 (Aug 17, 1999)

•	Buried piping analysis is available again.
•	When a bend is input, by default, the radius, radius type, thickness, material and flexibility factor from the previous bend (if available) are used.
•	Graphics background can be set to black or white. In the graphics window use: Options > Background to change the background color.
•	Bug correction: The Guide dialog always showed units of stiffness as (lb/inch) even though the stiffness was input and used in correct units.
•	Bug correction: For reducers, cone angle, knuckles and delta were not input or saved.
•	Bug correction: More than one pump, compressor or turbine could not be input.

CAEPIPE v5.01B (Jun 21, 1999)

•	Using File > Export menu command, the following items can be written to a text file in Comma Separated Values (csv) format which can be read by Microsoft Excel and plotted.
-	Materials
-	Spectrums
-	Time functions
-	Time history results
•	Limit stops, bellows, slip joints and beams are now rendered. To render a beam the depth and width of the beam section must be specified.
•	Bug correction: For an elastic element the Z component of the local x axis was not saved properly.

Please contact us for previous versions' Release Notes.

TOP |

BACK

What is New?

Enhancements & Bugfixes to CAEPIPE

Piping Design & Analysis Seminar