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PRE-Stress | Design Software

PRE-Stress helps you analyse and run calculations on many types of prestressed concrete elements including hollowcore slabs; slabs; beams; sloped beams and double tees. 

The software considers the whole life cycle of the the prestressed element across all the production stages from the casting in the factory; de-tensioning; storage; transportation; lifting and handling; right though to the final placemenet in the building. Cracking occurring in the early stages of the element lives on throughout the calculation, affecting the calculations in the final stages. The program is based on a 2D FEM-engine for accurate numerical solutions and precise results.

Watch the Overview Video of PRE-Stress

Users of our IMPACT Design software can also benefit from full integration of hollowcore calculations whilst detailing hollowcore floor layouts in 2D and now full 3D in the IMPACT Project Manager. Loads and supports defined in the model are sent to PRE-Stress along with section data, returning key results straight into the drawing. More in-depth examination of results can be done in the accompanying PRE-Stress file.

PRE-Stress Features:                 Benefits:
Strand Pattern Manager Optimise the amount of prestress you use
Load Combination Generator Automatically generate dead load cases
Recess Beam Design Helps you reduce floor heights
Fire Design EC2 and EN1168 for hollowcore slabs
Eurocode Full compliance with EC2
3D Project Manager Run simple prestress checks as you detail floor layouts
Data Import Integrate with Tekla®; Revit; CAD; XMS; XML

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Do you need help to improve your pre-stressed concrete calculations?

Are you interested in finding out more, or would you like a showcase? Click Get started now.

Watch the Introduction Video to PRE-Stress

Strand Pattern Manager

Use the Strand Pattern Manager to load either a normal pattern-file or a master pattern file with all possible strand positions for a casting bed in a specific factory. The center of gravity for the cross section and the center of prestressing are shown to minimize any non-symmetrical deflection.

Recess beam design

After a successful code control, it is possible to design the recesses in the ends of the beam.


Anchorage of prestressing strands

The design of anchorage reinforcement is performed if the section is cracked in the anchorage zone and the results will be shown along with any splitting, spalling and bursting reinforcement if needed.

Load combination generator

Load cases for dead loads are automatically generated for the element and any topping, if present. Depending on the type selected for the load, the program will automatically add the correct factors according to the national annex.

Safety classes have been added for appropriate annexes

In the Swedish annex the term 'Consequence Class' has been renamed to 'Safety Class'. It will still change the factors in the load combination if another safety class is chosen.

Splitting, spalling and bursting of concrete beams

PRE-Stress checks and designs the special end reinforcement stirrups with regards to splitting and spalling. You can select the diameter, cover, and spacing between the stirrups and the program will calculate the number of stirrups and how many legs are needed.

Concrete topping on hollowcore elements according to EN1168

For hollowcore members with active structural topping, it is possible to choose to calculate the Composite web shear capacity according to EN1168 Annex F.2.2, instead of the normal topping calculation according to EN1992-1-1 6.2.2.(2) or EN1168 This setting is enabled in the 'Calculation settings'-tab. Note that this method for calculating web shear failure only is valid for the simplified method in EN1168, and the program will automatically set this to prevent wrong assumptions. 

Fire Design

Fire design can be performed for concrete elements according to Eurocode 2, with complementary code EN1168 for hollow-core members.

Get Started Now

Do you need help to improve your pre-stressed concrete calculations?

Are you interested in finding out more, or would you like a showcase? Click Get started now.

The PRE-Stress Wiki  is a seperate website containing more detailed and technical information about the PRE-Stress software.

The Wiki contains information on all PRE-Stress features, including user guides, product descriptions, installation guides and more.

For all your PRE-Stress needs, please click to visit the PRE-Stress Wiki website.

If you have any PRE-Stress related support questions, you can always contact our support team.

Worldwide Support

Email: support.prestress@strusoft.com

Telephone Sweden: +46 (0)40 530 191

Telephone ROW: +45 2683 2424

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Training videos

The StruSoft YouTube Channel contains a wealth of video explainers and pre-recorded webinars about the PRE-Stress software. Click here to view.

Below are a couple example videos of the training material, showing the analysis and design of a prestressed concrete precast element. This video material included in the playlist is intended to be used along with a course material that can be found in the Documents section.

Watch a PRE-Stress Webinar

Watch the video on the new torsion feature in PRE-Stress 6.7.

Get Started Now

Do you need help to improve your pre-stressed concrete calculations?

Are you interested in finding out more, or would you like a showcase? Click Get started now.

Gapa Project Partners use PRE-Stress to design Roof Beams

Flaviu Popescu from StruSoft Denmark sat down with our PRE-Stress users from Gapa Project Partners Romania and talked about how they are using the program in their design.

Flaviu Popescu: Hi Bogdan, thank you for taking the time to speak to me. I'll just jump right to it: Why did you choose to work with PRE-Stress? What were you using before that?

Bogdan Buzaianu: Before PRE-Stress, we would use an in-house developed spreadsheet to do our verifications. A lot of verifications. We would calculate tension losses, concrete stresses in the initial and final stages, long term effects, SLS checks like deflection, crack width and ULS checks for bending and shear. The disadvantage was the low number of sections for which we did the verifications - basically midspan and supports. 

FP: So what does PRE-Stress help you with the most? 

BB: It saves a lot of time on checking intermediary sections and stages, from release to final stages in ULS. We can cover a large number of situations for release, transport, erection, secondary element erection, short- and long-term ULS checks.  

FP: Do you have a favorite feature in PRE-Stress?

BB: I think the most useful check is the crack width calculation. Before PRE-Stress, in order to limit the calculation stress and concrete crack, we would have to limit the strain in the bottom part of the element. Now we can push the limits a little bit further and have an ever more effecient design. Another very useful features is the posssibility to import sections from a dwg file for hollow core sections with irregular contour. When we have to consider topping, we really appreciate the possibility to model the topping - in the erection phase and as part of the structural element in later phases, all while considering a different concrete class.

FP: What kind of projects and/or elements do you use PRE-Stress for?

BB: The last project we used PRE-Stress on is finalizing now and is a storage warehouse of approximately 7000 m², close to Bucharest, Romania. We used PRE-Stress for calculating the roof beams, spanning 24m² and the slab elements for the administrative building: mainly T and L beam elements and double T surface elements.

FP: Thank you for the great feedback, I'm happy you are finding it useful. You've already said so many good things about PRE-Stress and how it helps your design, anything else you would like to add?

BB: We haven't looked into the Fire Design feature, but we can't wait to use it for our hollow-cores and beam elements!

Get Started Now

Do you need help to improve your pre-stressed concrete calculations?

Are you interested in finding out more, or would you like a showcase? Click Get started now.