RAPT User Manual Copyright PCDC

1 RAPT user ManualCopyright PCDCT able of Contents11 Introduction2 Program Dongle Configure RAPT for Shared Network Use3 File RAPT Data File RAPT Frame RAPT Design Standards RAPT Materials Data File4 user Start Start Screen - File Start Screen - View Start Screen - Help user Unit and user Page Line Output Report Keyboard Data Cell Data Cell Editing and Cell Cell Imperial Cell Formula Cell Screen General Screen Layout General Toolbar General General File General Edit MenuRAPT user ManualCopyright PCDCT able of General View General Tools General Report General Window General Help General Message Window5 Design Load Combinations6 Concrete Reinforcement Reinforcement Carbon Structural Decking Structural Decking Sheet Structural Decking Flange Structural Decking Web Structural Decking Prestressing Bonded Monostrand Anchorage Anchorage Tendon Bonded Multistrand Anchorage Anchorage Tendon Unbonded Unbonded Multistrand Anchorage Tendon DataRAPT user ManualCopyright PCDCT able of Prestressing Prestressing Bonded Multiwire Anchorage Anchorage Tendon Pretensioned7 Frame Definition and Modelling Tendon Tendon Act Transverse Beams / Drop Panels / Concrete Layers / Frame Frame Definit io Input General Frame Shape Screen Span Column Beam Drop Panel Transverse Vertical Steps / Horizontal Steps / Load Applied Line Panel Area Point Point Moment Bending Moment Diagram - ColumnsRAPT user ManualCopyright PCDCT able of Bending Moment Diagram - Moment Bending Moment Envelope - Bending Moment Envelope - Moving Moving Line Moving Area Moving Point Moving Loads Load Load Combinations - Load Combinations - Short-Term Load Combinations.

2 Permanent Load Combinations - Load Combinations - Transfer Load Combinations - Lateral Distribution Prestress Drape Allowable Adopted Jacking Reinforcing Bar Reinforcing Bar Design Design user Defined Reinforcing Bars, Mesh and Fibre reinforced Metal Design Ultimate Design Crack Control Design Deflection Design Earthquake Design Pattern Load Design Frame Viewing Output Output Viewing Output Results - Graphics WindowsRAPT user ManualCopyright PCDCT able of Creating A Transferring Output Data to other Input Frame Load Prestress Prestress Reinforcement Frame Tendon Tendon Secondary Bending Bending Moments - Column Moment/Shear Moment/Shear Bending Moments - Load Bending Moments - Load Flexural Flexural Design - Flexural Design - Flexural Design - Flexural Design - Flexural Design - Shear Design - Shear Design - Detailed Reinforcement Layout8 Column Definition and Design9 Cross-section Definition and Design10 Tendon Profile Definition and DesignT Preliminary Initial Selection of Section Determination of Load to be BalancedRAPT user ManualCopyright PCDCT able

3 Of Selection of Level of Frame Column Equivalent Column Net Column Enhanced Column Slab / Beam Lateral Distribution Column Strip Critical Sect Ultimate Cracking Stress / Strain Forces in a Cross Youngs Modulus of Crack Control for Prestressed Prestressed reinforced reinforced Summary of Loading Curvature Deflection Creep Shrinkage Tension Two Way Deflection LimitsRAPT user ManualCopyright PCDCT able of Ultimate Punching Punching Shear to Punching Shear to BS8110 & SABS Punching Shear to Punching Shear to Beam RAPT Principal Tensile Flexure-Shear Strength Reinforcing for Shear to Reinforcing for Shear to BS8110 & SABS Reinforcing for Shear to Reinforcing for Shear - Secondary Losses of Immediate Friction within the Live Friction along the Drawin at the Elastic Long-term Losses of Shrinkage of the Creep of the Relaxation of the Strand Columns - Columns - Composite Steel Effective Flange Elastic Section Design based on Elastic Design based on Plastic (Strength Limit State)

4 Shear Stud Stud Anchorage Prestress Forces ImposedRAPT user ManualCopyright PCDCT able of From Angle Forces in Forces in Forces due to Change in From Anchorage Fibre reinforced Metal Decking12 References13 Local Adaptation of Example RAPT RunsRAPT user ManualCopyright PCDC1 Introduction11 IntroductionThe RAPT computer package is a design and analysis tool for reinforced and post-tensioned concrete slab and beamsystems, developed by Prestressed Concrete Design is a computer package for computers running Microsoft Windows Operating System which, given the basicstructural layout of a one or two-way reinforced or partially post-tensioned beam / slab system, will perform theanalysis and design Australian Concrete Structures Code British Concrete Structures Code BS American Building Code ACI 318 for reinforced African Concrete Code Standard CP Kong Code of Practice for Structural Use of Concrete - Codes of Practice for reinforced and Prestressed Concrete - IS456/IS1343 These seven base codes can then be further modified to simulate other codes.

5 Users have the ability to adjust thefollowing Specific Design / Safety PropertiesThe package has been written by practising structural engineers to be used as an everyday design following is a summary of design using RAPT The input is fully interactive using spreadsheet style entries with automatic updating of parameters are defaulted wherever possible. Interactive Graphic views of all inputinformation are available for checking values input. The input briefly consists of defining the overall concrete dimensions, applied dead and live loads, theprestress strand data, tendon start and end locations and loads which the designer wishes to balance ortendon profiles and number of tendons. RAPT determines the number of tendons required and the profiles they should have to balance the are at liberty to alter any decision that RAPT makes on their behalf regardingnumbers of tendons and tendon profiles. For post-tensioned systems RAPT recognises that there aremany solutions for a given set of data.

6 For example more tendons may be added and the drapes modified toachieve the same balanced loads. In fact, if during a run, the designer wishes to totally revise theprestressing layout he is free to do so, again and again until a solution is reached that accomplishes hisrequirements. In this way the most economical solution may be found. RAPT calculates all short-term and long-term losses of prestress using parabolic or harped profiles withautomatic calculation of reverse curves. Tendon offsets from the concrete soffit to the underside of the ducts are given at approximately one metrecentres. A graphics plot may be requested which draws the tendon profiles within the concrete cross-section,noting the offsets and spaces thereof. Strand extension figures are also calculated. An unlimited number of separate tendon profiles may be simultaneously incorporated in any single may extend full length or stop short at any point within any span. Tendons may be jacked from eitheror both ends.

7 For two-way systems separate profiling is done for column and middle strips. The tendon size,profile, start end locations etc can vary between column and middle strips. RAPT calculates all forces imposed on the system by the action of the prestress - distributed loads, moments,forces at changes in cross-section, eccentric anchorages and vertical forces at ends of drapes. The forces arecalculated at long-term and at transfer forming two separate load cases that are automatically used in theANALYSIS option. Secondary reactions and bending moments are automatically calculated by RAPT. Equivalent frame properties are calculated using specific inertias within each span and four inertias in eachcolumn. Loads can be entered as uniform distributed loads, linear distributed loads, point loads, point moments or asa moment user ManualCopyright PCDC1 Introduction2 RAPT will also calculate (if chosen by designer) moments and forces in the structure due to pattern pattern loading rules used vary depending on the design code selected and comply completely with thespecific rules for loading pattern and load factors defined in each design code.

8 RAPT performs a frame analysis for all the loads on the structure and combines them for transfer, service(moment controlled design envelopes are calculated, ultimate (both moment controlled and shear controlleddesign envelopes are calculated) and deflection cases / conditions using the combinations given in the codeselected for the design (or as modified by the user in input). All the separate load cases or combinations maybe plotted to the screen or printer. The plots and printouts show maximum moments and shears at the criticalsections. For two-way systems the lateral distribution of bending moments across the panel width is automaticallycarried out. Again the designer is free to over-ride the factors determined by the program. The design of each span involves ultimate service, and transfer calculations. These are carried out at a seriesof evenly spaced points in each span with specific points included to cover all possible critical sections.)

9 Theseinclude critical moment regions, changes in cross-section and ends of internally stressed tendons. (columnand middle strip). The locations of the critical sections for bending at the columns are automatically calculatedby RAPT. Detailed output may be requested giving all steel stresses and concrete stresses. A cracked sectionanalysis is performed if a section is in tension under working or transfer loads. A separate stand-alone cross-section utility is included in the package which enables a cross-section of any shape, reinforced /partiallyprestressed to be fully detailed or investigated for all of the above and for beam shear. Deflections are calculated using moment-area principles, using curvatures calculated based on the level ofcracking at each of the design points and allowing for tension stiffening and long term creep and shrinkageeffects based on the concrete properties and stresses and the reinforcement pattern in the member.

10 Transfer(self weight for RC members), short-term, incremental and long-term deflections are calculated along withspan/deflection ratios for comparison purposes . These may be plotted to the screen or printer if also calculates deflections based on odd span and even span patterning of loads if requested. Punching shear and beam shear are investigated for each column and span. The required spacing of stirrupsis printed for points along each span. Design results may be viewed interactively on the screen for each section of data in tabular text or graphicalformat with text information data available interactively. Output reports are created automatically to therequirements of the designer and may be viewed on the screen or previewed and printed to any windowsprinter including file utilities such as Adobe Acrobat. Each segment of the results may be individually reams of superfluous output may be user ManualCopyright PCDC2 Installation12 Program InstallationThe RAPT installation program is easy to use.