IDEA StatiCa prestressing

IDEA StatiCa ®
Calculate yesterday’s estimates
CONCRETE STEEL PRESTRESSING

www.idea-rs.com
We are a company dedicated to analysis of structural members and details. Engineers
use IDEA StatiCa programs to design residential, civil and industrial structures.
Our software deals with both safety and economic efficiency of structures.
We constantly research and develop new structural analysis methods
to make every new construction safer and cheaper.
“We are structural engineers and make software
for structural engineers”
Lubos Sabatka, Jaroslav Navratil
WHAT WE DO
IDEA RS develops new generation of designing and checking programs. Structural engineers and consultants use them to design
residential, civil and industrial structures. We deliver a flexible system of programs to enhance output and working comfort
of every engineering office.
IDEA StatiCa ®
IDEA StatiCa ®
enables engineers to design every new construction cheaper and safer by:
– Minimizing risks of structural defects
– Decreasing material consumption of construction members/details by up to 30%
– Reducing time spent on designing of construction members/details by up to 50%
– Providing 100% “white box” results for engineers, general contractors, checkers and construction authorities.
IDEA StatiCa ®
has three main parts:
IDEA StatiCa Concrete
created for engineers dealing with concrete structures
IDEA StatiCa Prestressing
devoted to bridge and prestressed structures
IDEA StatiCa Steel
focused on steel structures and joints
Our team has more than 25 years of experience in the field.
WHO WE ARE

www.idea-rs.com www.ideastatica.com
StatiCa Prestressing is used by engineers for the design of members, cross-sections, and details of prestressed
concrete structures and bridges. The program is suitable for an extensive range of applications
in both pre- and post-tensioned concrete market. With respect to that IDEA StatiCa Prestressing is:
GEOMETRY
• 2D/3D geometry of beams, curved in elevation
and plan, tapered beams
• Frames, columns, piers
• Uncoiling and vertical scaling of beam
• Predefined 3D shapes of tendon, table/DXF
inputoutput, geometry of tendon spacers
• User templates of reinforcement and tendon shapes
• Catalogue, general and composite CSS
ANALYSIS
• Predefined types of construction stages
• TDA – Time-dependent analysis of creep
and shrinkage, creep non-linearity
• Redistribution and reduction of internal forces
• Prestressing loses
LOAD
• Fatigue and accidental design situations
• Calculation of equivalent loads, balancing of external
loads
• Complete ULS and SLS combinations according
to EN 1990
• Bridge combinations according to EN 1991-2
• User defined internal forces
CHECKS
• Complete ULS and SLS checks according
to EN 1992‑1-1, EN 1992-2, SIA 262
• Cross-section capacity in flexure, shear, torsion,
interaction of N, Vy, Vz, Mx, My, Mz, fatigue, shear
in composite joint
• Serviceability – stress limitations, crack
width, decompression condition, brittle failure
• Stress-strain response N-M-M, diagram M-N-rotation,
short/ long-term stiffness, detailing rules
OUTPUTS
• Graphical presentation of checks
• Brief output overview or detailed report
• Bill of material
• DXF export
SIMPLE AND EFFECTIVE
enables easy input and fast design of the structure
COMPREHENSIBLE
provides clear information about beam behavior and utilization of particular sections
COMPLETE
provides comprehensive checks according to code requirements including references to code provisions, tooltips,
and explanations
Key features of IDEA StatiCa Prestressing

Visit our website www.idea-rs.com to find out more.
Range of application
The program is suitable for a wide range of pre- and post-tensioned concrete structures.
Prefabricated beams
with various CSS
Bridge piers, columns,
prestressed trusses and frames
Beams and design strips
of post-tensioned slabs
Continuous beams
with composite slab
Civil and industrial buildings
Bridge structures
Bridges cast-in-place
into falsework
Precast hollow core slabs
with or without topping
Easy to Use, Correct and Complete Solution
Distinctive features of composite design module are completeness, comprehensiveness. Design methods fully comply
with complex Eurocode and SIA code requirements. At the same time the solution is easy to use and effective for daily
needs of industry professionals. Fast and simple input is done with help of specialized wizard. All data related to the analysis
of construction stages is generated automatically and they are presented in terms well known to the engineers, such as load
cases, combinations etc. Therefore they need not to adapt their workflow and logic to the complex method of analysis.
The objective was to provide correct and complete solution make it easy. So the program is focused, simple, and fast tool
rather than generic and complicated puzzle.

Structural model of design strip of post-tensioned slab
IDEA StatiCa Beam
IDEA StatiCa Beam is the module for analysis and design of continuous composite 2D and 3D beams made from pre- or post-
tensioned prefabricated or cast-in-situ elements made subsequently monolithic above supports by diaphragms and cast-in-situ
slab. The module contains the tools for simple input, structural analysis with respect to construction stages, creep, shrinkage
and concrete ageing, and code assessment.
WIDE VARIABILITY OF GEOMETRY
• Single span or continuous beams with 2D/3D geometry, overhangs, haunches, general supports
• Straight or curved in plane and elevation, pitch
COMPREHENSIVE IMPLEMENTATION OF EUROCODE
• Complete ULS and SLS combinations according to EN 1990 and EN 1991-2
• Design according to EN 1992-1-1, EN 1992-2
COMPLETE SOLUTION OF PRESTRESSING
• Pre- and post-tensioned tendons of general shape
• Special input wizard
• Beam uncoiling and scaling
• Complete calculation of tendon losses
• Equivalent load determination and presentation
• Design of prestressing force by balancing of external loads
• Tendon user templates, DXF and TXT import and export
• Perfect and comprehensible check of cross section
Unique features of design and check
in IDEA StatiCa Prestressing
Easy to use, but at the same time general and complete solution.

The definition of tendon geometry related to the shape of a designed structure can be a difficult design step
especially in case of curved structures. IDEA StatiCa Prestressing provides for the ‘uncoiling of the beam’
and simplifies this step – plus, you work in 2D and you make a 3D structure.
3D problem
By uncoiling the beam in the plan we simplify the problem to 2D geometry. Consequently the beam appears
straight in XY and XZ planes and the definition of tendon geometry is no longer a challenging task.
Uncoiling
The next step can be a complex job, which is the drawing of tendon shape in a slender prestressed beam!
It can be very challenging, because the beams are usually very long and shallow and one can hardly differentiate
the tendon’s details. That is why we offer the possibility to scale selected element vertically and horizontally.
Vertical and horizontal scaling
Tendon shape design
Scale your beam vertically to obtain clear drawing in comfortable arrangement.

Design of tendon shape in 2D environment
Once we have prepared the uncoiled and scaled view of the beam, we can generate a default shape of the tendon automatically,
also with respect to support positions. If needed, the tendon shape can be adapted to meet any user defined requirements.
The magnitude of prestressing effects is controlled by prestressing force. According to Prof. T.Y. Lin, a portion of an external
load has to be balanced by the equivalent load caused by prestressing. The Load balancing method can therefore be used
for preliminary design of the prestressing force.
• Default shapes of tendon with extensive predefined shapes parabolic/polygonal
• Import from TXT, DXF
• User-defined templates
A 3D tendon profile is obtained by composing XY and XZ plane projections. In addition, the tendon is wound up the beam
and the beam is coiled back to its real shape. In this way we obtain tendon geometry related to curved shapes of a designed
beam quickly with no additional effort! As it is documented here by the examples, the effort is reduced to the situation
of straight beams.
Calculation of prestressing loses
Needless to say, tendon losses are calculated and tendon stress is checked against Eurocode 2/SIA 262 requirements.
The analysis of short-term losses fully respects all angular changes of 3D tendon geometry.
Equivalent load determination and prestressing force design
The equivalent load caused by prestressing is calculated automatically. You can display it and illuminate the effects
of prestressing – upward load acting against dead load and live loads. In this way IDEA Prestressing allows the user
to recognize the active role of prestressing in the design.

Composite beam
IDEA StatiCa Beam is suitable for EN and SIA code design of various types of reinforced or prestressed beams with composite
slab, floors composed of prefabricated beams made subsequently monolithic by cast-in-place concrete, permanent shuttering
floor systems, composite bridge beams, and repair and strengthening old structures.
• Predefined types of construction stages
• Calculation of equivalent concrete age at prestressing
• Internal temporary supports with possibility of required
camber
• Time dependent analysis of creep, shrinkage, and ageing,
nonlinarity of creep
• Detailed design according to Eurcode and SIA 262
Continuous composite beams made from prefabricated elements made subsequently monolithic
Load history and its influence on redistribution of internal forces
Typical examples of composite concrete-to-concrete cross-sections
Time Dependent Analysis was extended to include the possibility of non-linear calculation of creep coefficient according
to EN 1992-1-1, provision 3.1.4 (4) in the case that compressive stress in the concrete at an age t0
exceeds the value
0.45 fck
(t0
). So far the value of concrete stress was limited to 0.45 fck
(t0
). This condition need not be satisfied after introducing
creep non-linearity, which increases economy of the design.
Construction stages and Time Dependent Analysis (TDA)
The changes of structural model, cross-sections or loads are modeled through construction stages. The effects of creep,
shrinkage, and ageing have significant impact on stress redistribution in time, and therefore to stress-state of cross-sections
at the moment of live load application. Those effects are calculated by IDEA StatiCa TDA module.

Equivalent concrete age
Demoulding of prefabricated elements and the transfer of prestressing are usually done at the age of concrete less than
one day. Provision 3.1.2 (5) of EN 1992-1-1 code does not provide the formula for strength of concrete younger than
3 days, what virtually makes the load application impossible unless the strength is based on tests. New functionality of IDEA
StatiCa enables the input of strength of concrete based on tests and the calculation of equivalent concrete age. The time
of corresponding construction stage is modified accordingly.
Presentation of internal forces in beam results
An improvement in understandability and lucidity of presentation of internal forces acting on composite
cross-sections was introduced in beam results. Total resultant of internal force can newly be presented
both to centroid of entire or current composite section. In the case of the option of current section,
internal forces will be related to the centroid of transformed cross-section determined from currently
existing phases of cross-section and their prestressing reinforcement. Change of modulus of elasticity
due to concrete aging is considered in all phases of cross-section.
Bridge Combinations acc. EN 1991-2
The introduction of load groups and the possibility of automatic
generation of bridge combinations significantly improve the effectiveness
and speed of design process, decrease its laboriousness, and help
the designer to cope with complexity of Eurocode. Both road and railway
load groups and combinations according to EN 1991-2, table 4.4a
and 6.11 can be defined, analyzed, and evaluated. Different values
of factors Ψ0, Ψ1 for different, but simultaneously acting loads are
respected according to tables of EN 1990/A1.
Load groups
for bridges
Fwk – Execution
QSn,k – Execution
Construction – Qc
Fwk – Persistent
Thermal – Tk
gr5 – Special vehicles
Fwk – Combi
gr2 – Horizontal forces
gr1a – TS
gr1a – UDL
gr3 – Pedstrian loads
gr1a – Pedstrian + cycle
gr4 – Crowd loading
gr1b – Single axle

User-defined internal forces
The objective is to enable an effective way of the design of prestressed (bridge) slabs / slab and rib systems / grillages
in IDEA StatiCa.
Let us assume that bridge slab is modeled
by 2D elements in some 3D FEA system.
“Integration strips” are defined in order to
integrate 1D internal forces. Only moving loads
are defined and analyzed in 3D FEA system.
Prestressing losses and load equivalent
to the effects of prestressing are calculated.
Finite Element method in combination
with TDA analysis is used to obtain internal
forces caused by all loads except the effects
of moving loads.
The effects of moving loads are imported
into IDEA Prestressing. Load groups
for bridges, construction stages are defined
and tendons are designed.
All specialized features of IDEA StatiCa
are used – detail and comprehensive sectional
design, tendon stress check, export
of drawings into DXF, output report and bill
of material.
3D FEA software
IDEA StatiCa
IDEA StatiCa
IDEA StatiCa
Use your current FEA program and analyze prestressing and construction stages in IDEA StatiCa
at the same time.

IDEA StatiCa RCS
IDEA StatiCa RCS stands for completeness and comprehensiveness of the assessment of reinforced and prestressed concrete
sections, transparency of assumptions and results and also acts as a perfect guide to Eurocode. Sectional check can be
performed for internal forces imported from IDEA StatiCa modules for structural analysis or from various FEA programs linked
by IDEA StatiCa BIM.
EFFECTIVE AND USER FRIENDLY INTERFACE
enables easy and fast input of cross-section
COMPREHENSIVE IMPLEMENTATION OF EUROCODE
provides references to code provisions, tooltips, explanations, warnings and error messages
HIGH-TECH SOLUTION
multithreading, 64 bit application, initial state method, interaction of internal forces in the section, TDA
Stress distribution across the section
Support of technical standards
IDEA
StatiCa
EN
Switzerland
Czech
Republic
Slovak
Republic
Austria Poland
Belgium Holland Singapore Germany

RCS – friendly, accurate and complete design of prestressed concrete sections.
Detailed stress response of prestressed composite section Equivalent thin-walled section for torsion check
Ultimate limit states
• Stress-strain response of cross-section loaded by any combination of internal forces
• Strength in Flexure, Shear, Torsion
• Interaction of all components of internal forces (N, My, Mz, Vz, T)
• Shear resistance of sections with/without shear reinforcement, cracked/uncracked in bending
• Fatigue
• Shear in composite joint
• Both nominal curvature and nominal stiffness methods for the calculation of second order
effects
Serviceability limit states
• Stress limitation,
• Crack width
• Decompression condition
• Brittle failure
Eurocode 2 method is not suitable for shear stress calculation in the joint in the case
of normal stress distributions, which are typical for concrete composite cross‑section.
The method does not reflect stress redistribution in the cross-section caused
by consecutive construction, and differential creep and shrinkage of concrete of both
composite parts of cross-section.
Calculation method alternative to Eurocode 2 method was
proposed, tested, and implemented in the program.
Shear stress is calculated from difference of normal forces
acting on sectional components in two neighboring sections
of the element. Numerical studies were performed based
on real-life examples of composite beams. The method
and the results were presented on international
conferences and published in technical papers.
The history of construction and service stages influences the ultimate resistance and serviceability limit state of these
structures. Cross-sectional design according to EN and SIA codes have been adapted to comply with the fact that unequal
strains and stresses appear in two adjacent fibers of construction joint.

IDEA StatiCa Frame
• Plane frame or truss of arbitrary shape
• Import of the shape from DXF
• Pre and post tensioned tendons
• Calculation of equivalent loads
• Balancing of external loads
• Design according to EN 1992-1-1, EN 1992-2, SIA 262
IDEA StatiCa Column
• Column with one or two corbels
• Free, fixed or flexible supports
• Standard or general cross-sections of any shape
• Proper analysis of 2nd order effects
• Design according to EN 1992-1-1, EN 1992-2, SIA 262
• 1xA4 or more detailed output report
IDEA StatiCa CSS
• Massive, thin-walled or mixed cross-section of any shape
• Import of the shape from DXF
• More cross-section components, each of different material
• Number of openings in cross-section is not limited
• FE analysis of cross-sectional properties and stress distribution
• Unique calculation of stress caused by shear and torsion
• Graphical presentation of shear flow
• Input of design matrices representing extreme sets of internal
forces
• Analysis of normal, shear and HMH stress
Export into CAD programs
IDEA StatiCa provides export of all drawings into DXF. This feature can save a lot of engineer’s time during subsequent
manufacturing of production documentation.
IDEA StatiCa CAD program

Get more information
VISIT
our website www.idea-rs.com to watch videos, browse through tutorials or read about our method and research team.
REQUEST
a FREE trial of IDEA StatiCa Steel at info@idea-rs.com.
JOIN
regular online events devoted to steel design organized by IDEA RS together with our local sales partners.
DROP
us an email with a question or schedule a Skype call with one of our consultants.
• Working with data model from MIDAS Civil and GEN, AxisVM, SCIA Engineer, RFEM, Nexis (Esa Prima Win) and others
• Interface for data import from external FEA programs
• 1D and 2D members – beams, columns, slabs, walls
• Assigning members into design Gross
• Check of structures from different materials
• Updating model back to FEA program after proper designing of members
• Updating designed members after change in FEA program
midas Civil IDEA RCSIDEA BIM
FEA programs
IDEA StatiCa BIM
Transferring of data between different programs can be very time consuming process. IDEA StatiCa BIM reduces that work
to minimum and provides easy import of structure geometry, internal forces of all load cases, combinations and construction
stages from Midas Civil and GEN, AxisVM, Scia Engineer, RFEM, Nexis and others. Therefore IDEA StatiCa design modules
work with results calculated by other FEA programs directly.
Thanks to that engineer can design a simple beam in the same way as for example segments of the bridge constructed
by cantilever mehod.

www.idea-rs.com
HOW WE ARE DIFFERENT
We believe that every structural engineering office deserves a tailor-made solution composed of programs particular engineer
really needs rather than “all-in-one” package. We try to achieve this by constant improving of:
IDEA StatiCa BIM – a “bridge” between IDEA StatiCa and other programs. It instantly transfers model of internal forces
to IDEA StatiCa where required members/details can be designed.
www.ideastatica.com - our dedicated website where engineers can use IDEA StatiCa programs as a cloud-based service.
Get online, click, calculate – it is that easy. You only need a web-browser.
ABOUT US
We develop and sell software for structural engineers/consultants, construction authorities and all others who perform/
evaluate/use structural analysis and design of constructions and their members. Our development team researches, tests
and applies new methods of structural analysis. Based on it, we create IDEA StatiCa products – enabling engineers to work
faster and more accurately, construction companies to use optimal amount of material and construction authorities/checkers
to evaluate requirements of the national code quickly and thoroughly. For us, creating top-class software is a way to contribute
to making every new construction around the world safer and cheaper.
We started developing IDEA StatiCa® in 2010. This enabled us to build it using modern program architecture and innovative
IT technologies – multi-core and 64-bit processors, object databases, graphic modelers, internet applications, cloud
computing. This represents a generation leap compared to software developed 10 or 15 years ago, no matter how many
times were they upgraded.
FUN FACTS ABOUT IDEA RS
Our company is a member of South Moravian Innovation Center (JIC), entrepreneurial incubator that was a starting point for
several successful tech companies.
IDEA RS leads research team including Czech universities in project “Advanced software for optimal design of complex
structural steel joints”. Developed CBFEM method is protected by patent.
In 2013, we were recognized as „10 High-Tech Startups in Central Europe You Should Know About“ by JIC.
During 2011 and 2012, we were the owner of the project “Interactive system for designing of constructions”, supported
by Czech government. Project materialized into our website www.ideastatica.com – the first web for cloud-based structural
analysis worldwide.
Our team, led by Lubos Sabatka
and Jaroslav Navratil, has more
than 25 years of experience in the
field. Two thirds of structures built
in the Czech Republic, Slovakia and
Benelux in last two decades were
calculated using either SW they
created in their own company (IDA)
or as development managers in
other companies (SCIA Engineer).

www.idea-rs.com
www.ideastatica.com
info@idea-rs.com

IDEA StatiCa prestressing

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