STRUCTURAL CONCRETE DESIGN
'A Comprehensive Computer Package for the Design of reinforced and Prestressed Concrete Structures'

This version should only be downloaded and installed by users on maintenance contracts or who have upgraded within the last 12 months. Those users whose upgrade is more than 12 months old will have to purchase  a new upgrade to use this version. If you are unsure of your status send an email to to check.

Version 7 Change Log

• Fix for point loads that caused RAPT to crash in certain scenarios
• Fix for shear table which was not reporting shear strut angle
• Fix for calculation of shear lever arm, dv. Previously over conservative
• Minor fix for calculation of Tendon coupler development

• FRP strength calculation bug fix - previously under reporting strength for FRP

• Confinement line for AS3600 2018 for column design added
• Tie detailing limit line added for AS3600 2018 and ACI 318-19 for column design
• Minor bug fixes for automatic reinforcement layout updates and FRP design

• Added ks*phi_Vuc for AS3600 2018 clause 8.2.1.6 in text and graphic outputs for shear design
• Added additional copy and paste functionality (ctrl + v over a range of cells)
• Added a check on column side face cover to reinforcement for determining development of said reinforcement
• Added crack control bar size and spacing for the permanent service load combination to Eurocode 2
• Updated Codemeter version to v7.60d

• Upgrade to avoid Codemeter Windows 11 problems. Make sure the latest RAPT is installed on all computers and on Dongle Servers

• Fixed Automatic Check For Update for new website provider
• Fixed C++ rounding error problem in Lateral Distribution where 100% at support is requested

• Upgrade to Codemeter 7.50
• In all cases make sure you have installed the latest versions of both RAPT and Codemeter on all computers

• For a RAPT frame with a Left cantilever only and no spans or Right cantilever, the deflection plot is very obviously wrong. This has been fixed in this update
• The Moment Units in the text output for effects of prestress at sudden changes in section are showing as kN/m. This should be kNm and has been changed in this update. The value was correct
• It is important with the latest version of RAPT that the Codemeter installation also be updated to the latest version on both client computers and dongle servers. Codemeter V6 and V7 will not work well together

• Deflection calculations in V7.0.0.0 were incorrectly based on all sections considered uncracked for short and long term deflection calculations. This is fixed in V7.0.1.0. Please rerun any files from 7.0.0.0

• A complete rewrite of the method for calculation of deflections from section curvatures to remove the inconsistencies in the older versions. This should remove previous inconsistencies in results which showed as discontinuities or kinks in the deflected shape near support locations. This has also fixed the previous inconsistency with deflections for cases with significant support settlement. The new method is described in the Theory section of the Help, T 7.7.1
• Addition of a Linear Shrinkage profile in Design Data – Deflections for the calculation of deflections for members where the concrete shrinkage is different at the top and bottom surfaces, eg with Metal Decking
• In previous versions, in the long-term section analysis of sections, creep was modelled in the section analysis but the shrinkage effect was added as an extra curvature. To allow for the variable shrinkage in the Linear Shrinkage model mentioned above, the effects of both creep and shrinkage are now modelled in the section analysis to determine the long-term curvature of the section under permanent loads
• Report deflections from 2 datum levels, Zero Datum (top of slab datum) and Deflected Support Line datum
• Fixed bug in application of Material factors for Metal Decking. The factor was only being applied to flange elements of the decking and not being applied to web elements of the decking
• Windows 11 functionality has not been included in this version. Any changes required for Windows 11 will be included in the next release of RAPT. If anyone runs the current release of RAPT on Windows 11 and notices anomalies in screen formatting or data entry problems, please report them to us so that we can check them before the next release

RAPT will run on Windows 7 though to Windows 11. The latest Service Pack for the version of Windows being used should be installed.

RAPT requires a RAPT Dongle to run. A demo version of RAPT that does not require a dongle is also available in the download area.

When loading the program, RAPT will check the dongle to make sure it is allowed to run on this version of RAPT. If it detects a problem with the licensing of the dongle, in most cases it will set itself as a demonstration dongle and allow full access to this version of RAPT for a period of 50 hours. This will give us time to sort out any licensing issues for that dongle. In all cases, the dongle will still be able to run RAPT. Please let us know if your dongle is set as a demonstration dongle if you think you should have full access so that we can sort out the discrepancy.

Updated versions of this release will be posted to this web site as problems are found and fixed. Please check periodically for the latest version.