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C12: Circular Column Design

Ver. 3.0.08 2017/01/04
  • Corrected sizing of column section picture in calcsheets.
Ver. 3.0.07 2016/08/02
  • Added minimum eccentricity check as per Eurocode paragraph 6.4.
Ver. 3.0.06 2016/05/12
  • Corrected labelling in Bending Schedule input table.
Ver. 3.0.05 2016/04/06
  • Compatibility problem with large fonts, fixed.
Ver. 3.0.04 2016/03/15
  • Adjusted usage of 'n' when evaluating slenderness and negative axial forces using Eurocodes. n limited to 0.01.
Ver. 3.0.03 2016/03/14
  • Added Quick access toolbar to ribbon panel.
  • Fixed divide by zero error occuring with negative axial loads and Eurocode.
Ver. 3.0.02 2016/01/06
  • Occasional range check error during start up, fixed.
Ver. 3.0.01 2015/12/09
  • Correction of licensing error introduced by maintenance release.
Ver. 3.0.00 2015/12/01
  • Major release.
  • Implemented new user interface library.
Ver. 2.6.08 2015/06/26
  • Added support for New Zealand concrete design code NZS 3101 - 2006.
Ver. 2.6.07 2015/03/19
  • Areas of bar sizes suggested adapted for nominal values as used in Australian codes.
Ver. 2.6.06 2014/04/07
  • Added Hong Kong - 2013 design code.
Ver. 2.6.05 2014/03/05
  • Corrected loading of end conditions when run from command line.
Ver. 2.6.04 2014/01/10
  • Corrected output for Eurocode 2 - 2004: Moment as a result of imperfections now added and not just used as a minimum.
Ver. 2.6.03 2013/11/14
  • Send to Calcpad function fixed.
Ver. 2.6.02 2013/11/08
  • Corrections to Eurocode 2-2004 output.
Ver. 2.6.01 2013/05/22
  • Corrected total moments at bottom for unbraced columns.
Ver. 2.6.00 2012/12/05
  • Major release.
Ver. 2.5.08 2012/10/23
  • Added ACI318 - 2011 design code.
Ver. 2.5.07 2012/09/14
  • Improved design code selection dialogue box with large fonts display setting.
Ver. 2.5.06 2011/09/01
  • Corrected link bar designation on bending schedule and sketches - defaulted to general setting.
Ver. 2.5.05 2011/08/12
  • Corrected "Send to Calcpad" function.
Ver. 2.5.04 2011/06/10
  • Added error message for condition N > 0.75*Pc for American, Canadian and Australian codes.
Ver. 2.5.03 2011/02/09
  • Added CSA23.3-04 (2010) Canadian code.
  • Improvements to calcsheet output.
Ver. 2.5.02 2010/08/25
  • Corrected problem with long load case names.
Ver. 2.5.01 2010/08/13
  • Added AS3600 - 2009 (Australian) code.
  • Mild steel bar designation aligned with global preferences.
Ver. 2.5.00 2010/07/05
  • New Release.
Ver. 2.4.09 2009/07/10
  • Added Eurocode 2 - 2004.
  • Removed Eurocde 2 - 1992.
  • Added detailed equations.
  • Minor corrections.
Ver. 2.4.08 2009/04/02
  • Fixed problem with top moments if fixity condition differs between x and y directions.
Ver. 2.4.07 2009/01/27
  • Recompiled for compatibility with quest user configurations.
Ver. 2.4.06 2009/01/21
  • Adjusted parameters for spiral links in bending schedule.
Ver. 2.4.05 2009/01/16
  • Corrected bar mark for spiral on bending schedule.
Ver. 2.4.04 2008/11/24
  • Correction for additional moments at centre of column in case where column pinned at both ends: AS3600 and ACI318 codes.
Ver. 2.4.03 2008/09/08
  • Changed Calcsheet output of '0.95fy' in BS8110 - 1997 code to read '0.87fy' when fy>=500 MPa. Calculations were correct.
Ver. 2.4.02 2008/06/13
  • Corrected slenderness moments for Eurocode 2.
Ver. 2.4.01 2008/04/01
  • Fixed display of scroll values on graphs.
Ver. 2.4.00 2008/03/25
  • Maintenance release.
Ver. 2.3.05 2007/11/01
  • Fixed range check error.
Ver. 2.3.04 2007/10/23
  • Added 3D view of reinforcement on bending schedule page.
Ver. 2.3.03 2007/10/01
  • Changed level output on bending schedule to 3 decimal places if levels are in m.
Ver. 2.3.02 2007/04/11
  • Minimum moment only applied about weakest axis for bi-axial bending.
Ver. 2.3.01 2007/04/10
  • Generation of bending schedules updated to new Padds format.
Ver. 2.3.00 2007/03/12
  • Prokon Ver 2.3.00.
Ver. 2.2.05 2007/02/10
  • ACI 318 - 2005 code added.
Ver. 2.2.04 2006/11/13
  • Fixed divide by zero error when drawing bending schedule.
Ver. 2.2.03 2006/07/21
  • Fixed access violation error.
Ver. 2.2.02 2006/05/25
  • Fixed bug causing divide by zero error.
Ver. 2.2.01 2006/03/28
  • Added option to save bending schedule input with input data.
  • Table of results in calcsheets corrected - showed reinforcement about secondary axis instead of main axis.
Ver. 2.2.00 2005/12/15
  • Version 2.2 released.
Ver. 2.1.09 2005/12/05
  • Spiral Stirrup dimension "C" was too long if the column was specified as not continuous.
Ver. 2.1.08 2005/09/08
  • Effective length factor ß cahnged back to default value automatically when tabbing back to input after analysing.
Ver. 2.1.07 2005/06/30
  • Calculation of slenderness moments for ACI, Canadian and Australian codes refined.
Ver. 2.1.06 2005/05/16
  • Australian code added.
  • Additional moments for ACI code diagrams adjusted.
  • Design moment changed to the vector sum of the X- and Y-moments.
  • instead of using bi-axial formula or increased moment methods.
Ver. 2.1.05 2005/03/14
  • Recompiled for Padds compatibility.
Ver. 2.1.04 2005/02/07
  • Concrete Society report TR49 provisions for high strength concrete incorporated.
  • Design for slenderness in ACI code corrected.
  • Hong Kong design code added.
Ver. 2.1.03 2004/10/26
  • Indian code added.
Ver. 2.1.02 2004/10/05
  • Can limit maximum size of bars using preferences setting in Calcpad.
Ver. 2.1.01 2004/09/21
  • On Bending schedule page - lap length factor label was replaced with 'cover on links'.
Ver. 2.1.00 2004/09/14
  • New version.
Ver. 2.0.04 2003/12/12
  • Column moments were only redrawn when scrolling.
  • load input if load cases were numerical.
Ver. 2.0.03 2003/11/11
  • Circular clips removed from Bending schedule options.
Ver. 2.0.02 2003/10/24
  • Now uses Windows Padds for generating schedules.
  • Full schedule is now displayed.
Ver. 2.0.01 2003/08/13
  • Problems fixed:.
  • Calcsheets corrected: The terms 'X-X' and 'Y-Y were swapped around on some of the output.
  • Maximum moment was often given as smaller than the list of M1+Madd, emin*N etc.
  • Final reinforcement values were correct.
Ver. 2.0.00 2003/08/05