• (A) Issues addressed in the Analysis/Design engine (54)
• (B) Issues addressed in the Pre-Processing Mode (16)
• (C) Issued Addressed in the Post-Processing Mode (7)
• (D) Issues Addressed in the Steel Design Mode (2)
• (E) Issues Addressed Concrete Design Mode (7)
• (F) Issues Addressed in the RAM Connection Mode (4)
• (G) Issues Addressed in the Advanced Slab Design Mode (0)
• (H) Issues Addressed in the Piping Mode (0)
• (I) Issues Addressed in the Editor, Viewer and other modules (14)
• (J) Issues Addressed in OpenSTAAD (1)
• (K) Issues Addressed with Printing (12)
• (L) Issues Addressed with licensing / security / installation (3)

(A) Issues addressed in the Analysis/Design engine (54)

A) 01 Eurocode 3 steel design has been improved to allow design of the newer European hollow databases sections and US HSS database sections.

A) 02 The GUI has been updated to handle the DIRECT ANALYSIS parameter REDUCEDEI.

A) 03 The display of the progression of an analysis has been improved so that the time steps reported can be viewed clearly.

A) 04 The output report for IS456 column designs have been improved so that the design axial force for large forces is displayed better.

A) 05 The routine for extracting data from the French tube database sections for design has been improved.

A) 06 The output report for combined stresses of unsymmetrical sections has been improved. The stresses are now based on the calculations using the modulus in each direction rather than a single most onerous modulus in each axis.

A) 07 The Canadian concrete design module CSA A23.3-94 has been updated to report the correct spacing of bars in the output.

A) 08 The Australian AS4100 steel design module has been updated to make a small improvement in the calculation of the ALM parameter using clause 5.6.1.1-(III)

A) 09 The analysis engine has been updated to process smaller loads than previously handled. In order to prevent unit conversions introducing small unwanted effects very small loads are not processed. This level has been lowered to 0.0000001 kips/inch (approximately 0.0175127 N/m)

A) 10 The DIN 1880 steel design module has been updated to ensure that the torsional shear stress of angles is correctly calculated as (Mx/It)*t.

A) 11 While performing a small delta type analysis (in both PDELTA and DIRECT ANALYSIS), the section moment due to tension and the section displacements due to shear/bending are added to the moment diagram, if small delta is selected. There is no iteration performed for this step

A) 12 The PDELTA analysis routines have been improved to better handle the P-small delta effects that occur in tensile members which also include releases.

A) 13 The PDELTA analysis has been updated to ensure that if during an iteration a member is found to have buckled, then output diagram in the Post Processing will display the members original moment diagram rather than that including the P-Small Delta effects which diverge towards infinity.

A) 14 The output report from a DIRECT ANALYSIS has been enhanced to add additional information such as the critical location in the analysis in order to assist the user to further investigate.

A) 15 The analysis engine has been updated to better handle the Eurocode 8:2004 Response Spectrum. Whilst the base shears were calculated correctly, the forces were not being distributed to the floors thus resulting in no displacements.

A) 16 The AISC 360-05 steel design module has been updated to improve the circular hollow pipe member design. The forces/moments in each of the members local axes are resolved into an equivalent forces/moment and the member designed for those which may result in more efficient designs.

A) 17 The Australian AS4100 steel design module has been updated to ensure that if the BEAM 1 parameter is specified (i.e. at the ends only), and Alpha M is to be calculated automatically (i.e. not specified with the ALM parameter), this is calculated correctly with the intermediate moments along the beam length.

A) 18 The Canadian steel design CSA S16-01 has been improved to ensure that MRZ and the compressive strengths are reported in the output file.

A) 19 The Australian steel design module AS4100 has been updated to correctly display the values of Ncz, Ncy, Nciz and Nciy

A) 20 The Australian steel design module AS4100 has been updated to improve the calculation of Alpha M

A) 21 The Australian steel design module AS4100 routines have been updated to ensure that un-initialised variables are accounted for.

A) 22 The Australian steel design module AS4100 has included a check to ensure that a user entered value of Alpha M is not greater than the code limit of 2.5

A) 23 The Eurocode 3 steel design EN1993-1-1 has been updated such that for members subject to an axial load and bending moment, the program used to skip the axial load/ axial capacity check. If the axial load is compressive, this will be fine since the combined condition will be critical. However if the axial load is tensile, we now to do the axial load/axial capacity check as well, before we do the combined axial + bending check

A) 24 The Eurocode 3 steel design EN1993-1-1 module has been update when checking members with biaxial bending moments. Previously it only performed the interaction check as per equation 6.41. Now the member is also checked for the bending capacities separately as well as the combined check.

A) 25 The output of members designed to the Indian steel design code IS800:2007 has been updated for members who cannot be designed as they are classified as slender and outside the scope of the current module. Previously additional checks may have been performed which may have classed the section as other than slender and thus led to confusion.

A) 26 The GENERATE FLOOR SPECTRA command has been updated to handle situations where nodes are defined in multiple groups. This is incorrect and reported with a warning in the output file.

A) 27 The Eurocode 3 steel design EN1993-1-1 has improved the calculations for the design of slender tee sections.

A) 28 The German steel design module DIN 18800 has been updated to ensure that if a parameter block contains a PY parameter assigned to some members, other members which have not had PY assigned are allocated their steel strength from the SGR parameter.

A) 29 The AIJ steel design module output has been updated to ensure that the axial force direction is correctly reported in a TRACK 3 output.

A) 30 The BS 5950 steel design module was modified in the last release to ensure that when calculating the interaction ratio for clause 4.8.3.3, when the axial load was extremely small the ratio was occasionally over estimated by using a larger axial load than was required.

A) 31 The Eurocode 3 steel design EN1993-1-1 has been enhanced with 2 new additional parameters ALPHA and BETA in assisting to specify the requirements in equation 6.41. See the International Design Codes Manual for full details.

A) 32 The Australian steel design module AS4100 has been improved to address an issue which occurred if a member that was being designed was assigned BEAM 0 (i.e. design only for the end moments) and ALM 0.0 (i.e. automatically calculate AlphaM based on the moment profile). This would cause the calculation of the AlphaM value to fail. In this situation, AlphaM will not be calculated based on the moment profile, but will be assigned the value 1.0. If an automatic calculation of AlphaM is required, then BEAM 1.0 must also be specified.

A) 33 The standard analysis engine has been updated to better handle load cases which included both notional loads and a bandwidth reduction during the analysis. This issue was not present in models when a bandwidth reduction was not required or when using the Advanced Analysis engine.

A) 34 In order to prevent getting huge displacements in a beam member minor axis due to small delta effects in a P-Delta or Direct analysis when there are no out of plane shears or moments (generally caused when axial compression in the member exceeds Pcr), a limit for the section displacements has been added as a new command SET DEFLECTION CUTTOFF f1 (where f1 is a limit in the current length units) which turns small delta calculations off for members for which the specified section displacement is smaller than the value defined for the parameter. This command should be added in the STAAD file after the first UNIT command, but before the start of the JOINT COORDINATES. If the absolute value of the maximum section displacement is less than f1 after 2 iterations; then it is converged. The assumption is that out of control, diverging, minor axis displacement will not occur until after 2 iterations.

A) 35 The FLOOR LOAD routines have been improved to better handle situations where the members included can define closed loops with concave edges which are excluded from the FLOOR LOAD command and thus should not be loaded.

A) 36 The design routines in STAAD.Pro have been enhanced to allow sections defined in the Russian STO ASChM to be chosen by a design using the SELECT MEMBER command.

A) 37 The analysis engine has been updated so that if a SELF WEIGHT command is assigned to a finite element then this is maintained even if the specification IGNORE (INPLANE) STIFFNESS has also been assigned to that element. Previously, the IGNORE (INPLANE) STIFFNESS command would mark these elements as having no mass/weight.

A) 38 The reduced moment capacity for steel designs performed to the Eurocode 3 EN1993-1-1 has been updated to correctly calculate the reduction factor for the yield stregth as per clause 6.2.8

A) 39 The BS 5950 steel design module has been updated for designing wide flange sections with cover plates with a revised method for calculating the torsion constant.

A) 40 The AISC 360-05 steel design module has been updated to correct the calculation for the span/deflection value (dff) for a member that is code checked after its property has been changed with a MEMBER SELECTION command.

A) 41 The Eurocode 3 steel design EN1993-1-1 has been updated in calculating NcrTF which uses the formula in NCCI SN 001a to ensure that the sign of the result is correctly assigned.

A) 42 The Eurocode 3 steel design module has been updated to allow correct design of double channel sections.

A) 43 The Eurocode 3 design of RHS and SHS class 3 sections has been imporved in the calculation of the effective section properties used in the design.

A) 44 The AISC 360-05 design has been improved for designs on built up wide flange sections (indicated with the STP 2.0 parameter) in that in now calcuates using the values as per clause G2.1(b). Previously it has been using the values from clause G2.1(a)

A) 45 The AS4100 steel design module has been improved in that any values of KY and KZ if not defined as integers were being truncated to integer values.

A) 46 The ACI 318 concrete batch design routine has been updated with 2 changes to the implmentation of clause 11-18 in section 11.6.3. 1) In the right hand side of that equation, instead of calculating Vc/(bw*d), STAAD was doing Vc/bw*d (without the parentheses) which is equal to (Vc*d)/bw. 2) In calculating effective depth, x1, y1, etc., the program was not subtracting the stirrup diameter from the total depth.

A) 47 The Eurocode 3 EN1993-1-1 design code has been updated to correctly calcuate the reduced moment capcity of sections under high shear where it is considered in an applied moment/reduced moment capacity context.

A) 48 The Eurocode 3 EN 1993-1-1 design has been updated to ensure that the parameter ZG is correctly initiated, if not specifically defined, when needed for calculating Mcr.

A) 49 The Eurocode 3 EN1993-1-1 design has been updated to allow designs of large models which would have perviously casued the application to crash.

A) 50 The steel design code EN 1993-1-1 has been updated with a new design parameter (ELB) that can be used to include the combined axial + bending checks as per equation 6.2. ELB parameter will accept either a value of 0 or 1. By default ELB will be set to 0. ELB = 0 : Combined axial load + bending check as per Cl 6.2.9 (default) ELB = 1 : Check as per eqn 6.2. Note that even if ELB is set to 1, we will still work out the reduced moment capacity of the section due to the axial load and report it, but will check for interaction using equation 6.2 rather than equations in Cl 6.2.9.

A) 51 The AISC 10-97 design code module for transmission towers has been enhanced to support the design of HSS tubular sections. Note this update was implemented in 20.07.05.

A) 52 The DIN 18800 steel design module has been updated such that previously the compressive capacity of a cross section was being worked out using a non-dimensional slenderness based on 93.9 x epsilon. The term 93.9 x epsilon is based on an E value of 210000 N/mm2 (as stated in the code). The procedure has been updated so that the non-dimensional slenderness will be calculated using the following equation that allows for the elastic modulus as well as the yield strength of steel used:- lambda_1 = PI*SQRT(E/fy)

A) 53 The Eurocode 3 EN1993 steel design module has been updated to ensure that the correct curve is selected if a built up flange has a flange thickness of exactly 40mm.

A) 54 The calculated reduced moment capacity equations for CHS sections as per eqn 5.34 of DD ENV EN 1993 has been updated to use the material safety factor correctly.

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(B) Issues addressed in the Pre-Processing Mode (16)

B) 01 The GUI has been updated to better display the 3D representation of General profile sections in the 'Section Outline' or 'Full Section' options of the Structure>Diagrams dialog. These were previously not always being located at the profile centroid.

B) 02 The export of finite element models using the 2D DXF routine has been improved to support both triangular and quadrilateral plate elements.

B) 03 The GUI has been updated to improve the ability to apply trapezoidal and hydrostatic loads on plates. Previously where the force W1 is 0 or negative and W2 is non zero, then only one row of plates was being loaded.

B) 04 The CIS/2 export has been updated to report the 'NAME' field from the section database rather than the 'STAADNAME' field which is intended as the name used for the section in a STAAD file only.

B) 05 The GUI has been updated to ensure that the data displayed in the Materials table does not appear to be deleted. Note that this did not affect the data in the file.

B) 06 The US Joist Section database has been updated so that it displays correctly in the GUI dialog box.

B) 07 The GUI has been updated such that if a response spectrum loading definition is assigned to a load case which uses the ASCE method as the combination method and if both FF1 and FF2 values are also defined, then re-displaying the data in the dialog will populate the dialog with the correct value of FF2.

B) 08 The GUI has been updated to ensure that the item ULZ in the Indian IS456 concrete design parameter dialog box is added correctly and does not add the parameter ULY instead.

B) 09 The GUI has been updated to handle incorrectly defined SPRING COMPRESSION commands which previously caused the application to crash when opening the data file.

B) 10 The CIS/2 Export routine has been enhanced to support exporting standard sections from multiple databases.

B) 11 The Auto Load Combination tool in the Loading dialog has an added option if creating new primary load cases using the REPEAT command (rather than combination load cases which will be summations of the results), to add additional notional horizontal loads from the categories specified in the menu option Commands>Loading>Edit Auto Loading Rules

B) 12 The Loading dialog in the GUI has been updated to better reflect the assignment of a wind load definition.

B) 13 The GUI has been updated to allow the command ELEMENT RIGID INPLANE ROTATION to be assigned graphically. For more details on the command refer to the Technical Reference manual section 5.24

B) 14 The GUI has been updated to ensure that any orthotropic 2D materials that have been created in the GUI are written into the data file correctly with the name as defined and not as an isotropic material with the name. Material1.

B) 15 The British Steel database has been updated with all the angle sections defined in the current SCI publication known as the Blue Book. Note also the sequence of the angle sections has been revised so that all the equal sections are listed followed by the unequal sections.

B) 16 The European steel database has been updated to include both seperated tables for rectangular hollow sections (RHS) and square hollow sections (SHS) as well as including the sections in the older combined TUBE table with modified values of plastic modulus to be consistent with EN10210-2. Note that for completness, there is also an additional circular hollow table (CHS) as well as the older PIPE table. All the sections in the RHS, SHS and CHS sections are as defined in EN10210-2.

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(C) Issued Addressed in the Post-Processing Mode (7)

C) 01 The GUI post processing and contouring of finite element results using the non-linear analysis has been improved so that the element centre stresses are reported as well as the corner stresses.

C) 02 The design information displayed in the Member Query dialog box for members designed to AISC 360-05 has been updated to ensure that the correct load case is reported.

C) 03 The intermediate moments reported on members analysed using the PDELTA analysis routine have been improved so that if the peak forces are generated at the ends of the members these are reported.

C) 04 The critical forces in cold formed members designed to BS 5950-5 displayed in the member query dialog have been updated to account for the unit system

C) 05 The post processing routine to create AVI movies of mode shapes has been updated to ensure that the facility is available for mode shapes generated from response spectra analysis.

C) 06 The Member Query dialog GUI has been updated to correctly report the critical condition of members designed using the Indian IS800:2007 code. Note that the information was correctly reported in the output file.

C) 07 The British Steel database has been updated with all the angle sections defined in the current SCI publication known as the Blue Book. Note also the sequence of the angle sections has been revised so that all the equal sections are listed followed by the unequal sections.

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(D) Issues Addressed in the Steel Design Mode (2)

D) 01 The BS5950 module in Steel Designer has been updated to corrected so that the correct axial load + bending interaction ratio shown is the maximum of the following clauses: Cl. 4822, Cl 4823, Cl. 483, Cl. 4832, Cl 4832.

D) 02 The output from steel designs performed with the Steel Designer module have been improved in that the values of Az displayed will be in mm3 (rather than m3) as previously these were so small that they did not register when shown to 2 decimal places.

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(E) Issues Addressed Concrete Design Mode (7)

E) 01 The Eurocode 2 design in the RC Designer module has been improved so that when bars at the ends of beams are needed to be extended this no longer causes the design to fail.

E) 02 The RC Designer code DIN 1045 has been updated to support the output of design details.

E) 03 The design of slabs in the RC Designer module has been improved to address problems which occurred on extracting the moments and forces on triangular finite elements.

E) 04 The RC Designer module for the ACI 318-99 degign brief has been updated to ensure that a suitable concrete strength can be assigned.

E) 05 The DIN 1045 beam and column design in the RC Designer module have been updated to ensure that it is possible to produce a detailed report which previously caused the application to crash.

E) 06 The method to establish the moments for design in slabs in RC Designer has been updated to be similar (although not the same) as the method used in the Post Processing module fo display the contour maps.

E) 07 The RC Design module has been updated to assist in the formation of design slabs such that where the local out of plane axes (local Z) is not consistent, these are reported as invalid and suggests the model nbe revised so that if required as a single slab, the local axes be suitably aligned.

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(F) Issues Addressed in the RAM Connection Mode (4)

F) 01 The RAM Connection Mode has been updated to ensure that the chosen design code method is retained each time the Settings dialog box is opened.

F) 02 The RAM Connection Mode has been updated to ensure that Gusset Plate Column-Beam Brace (CBB) can be defined and designed.

F) 03 The RAM Connection Mode has been updated to support double angle bracing members defined in the structural model.

F) 04 The RAM Connection mode has been updated to allow theF) 04 The RAM Connection mode has been updated to allow the specification of the beam/girder to be specified on a beam/girder connection.

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(G) Issues Addressed in the Advanced Slab Design Mode (0)

(None)

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(H) Issues Addressed in the Piping Mode (0)

(None)

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(I) Issues Addressed in the Editor, Viewer and other modules (14)

I) 01 The STAAD Editor has been updated to allow the font size to be resized from the Menu option View>Customise on has been updated to support display of Greek characters that are have been added to the output of steel sections designed to the Australian AS4100 code.

I) 03 The Section Wizard application has been updated to prevent the occasional display of 'Icon PRB...' message boxes.

I) 04 The Section Wizard export to a STAAD.Pro User Table has been updated to ensure that the elastic properties Sz and Sy values are not transposed in General section.

I) 05 The Freesketch module has been updated to allow export of sections into a STAAD User Table.

I) 06 The Editor has been updated to support the display of international characters in the STAAD data file.

I) 07 The report document produced from Section Wizard files now uses the standard Arial font in order to ensure it can be displayed on systems which used extended international fonts.

I) 08 The Editor has been updated to ensure that if the data file is printed from within the Editor and the margins adjusted prior to the printout, all the data is reformated correctly and included in the printed document.

I) 09 The STAAD user table (UPT) export routine of the Section Builder module of Section Wizard has been updated to correctly assign the properties of the major and minor axes with the local Y and Z axes in the UPT file.

I) 10 The GUI has been updated to ensure that if a Bridge Loading module license is available, then the mode is shown available when a file is loaded. Previously, this was only set after the file was closed and re-opened.

I) 11 The AASHTO LRFD code in the Bridge Deck mode has been enhanced such that it is now possible to provide the Impact Factor for load generation for HS Truck and Tandem vehicles.

I) 12 The AASHTO LRFD module in the Bridge Mode has been updated include consideration of multiple presence and include the factor from section 3.6.1.2 (table 3.6.1.1.2-1)

I) 13 The AASHTO LRFD module in the Bridge Mode has been updated to improve the ability to set the curb distance.

I) 14 The Section Wizard export to a STAAD.Pro User Table has been updated to ensure that the plastic properties Pz and Py values are not transposed in General section.

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(J) Issues Addressed in OpenSTAAD (1)

J) 01 The OpenSTAAD Application object data handeling routines have been enhanced so that macros and applications using this API can access data from very large models which would have previously caused the API to crash.

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(K) Issues Addressed with Printing (12)

K) 01 The online help documentation has been updated to link to the updated technical support website.

K) 02 The N6960-1984 design has been checked against the amendments defined in Supplement 2. It has been noted that this supplement does not affect the designs performed by STAAD.Pro, that the International Design Codes Manual section 17.1 has been updated to reflect that this supplement has also been considered in the designs.

K) 03 The AIJ concrete parameter list has been updated in the International Design Codes manual.

K) 04 The online manual has been updated to state that the minimum resolution that is required to use STAAD.Pro effectively is 1280x1024.

K) 05 The International Design Codes Manual for the American Petroleum Institute (API) has been updated to correctly report that designs are performed to the 21st Edition as indicated on the output files.

K) 06 The technical reference manual section 5.31.3 has been updated to correctly report where the heights specified in the wind load definitions relate to the model.

K) 07 The online help section of the International Design Code for Japanese Steel AIJ has been updated to reflect both the 2002 and 2005 versions of the code that are supported.

K) 08 The GUI has been updated to ensure that the parameters for DIRECT ANALYSIS, TAUTOL and DISPTOL are created correctly in the STAAD data file.

K) 09 The Applications Examples manual has been updated to address a few incorrect entries, specifically in Example No. 24 and Verification No. 5. Additionally In the International Design Codes manual section 10.B Japanese Steel Design, the actual bending capacities equation have been updated to reflect the actual equations used.

K) 10 The French Steel section of the International Design Codes Manual, section 6B has been slightly modified to correct the list of design parameters supported by the code.

K) 11 The BS 5950 section of the International Codes manual section 2B.8 has been updated to confirm that to reflect GENERAL and ISECTION shapes being assumed as I shapes for BS5950 design. PRISMATIC shapes cannot be designed.

K) 12 The International Codes manual section 5B.6 has been updated to show the correct value of steel grade for SGR 2.0 as S355

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(L) Issues Addressed with licensing / security / installation (3)

L) 01 The STAAD SELECT XM License Configuration has been updated to display the currently supported licenses.

L) 02 The installation has included RoboEx32.dll which is needed by the FreeSketch online help. ketch online help.

L) 03 STAAD.Pro has been updated to better handle files that have been located in folders or marked as 'Read only' which would have caused the application to crash after displaying a warning that the file is not accessable by the user. The warning is still displayed.

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