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PRE-Stress | Design Software

PRE-Stress is an advanced software for calculations of prestressed concrete elements. The different stages from the casting in the factory to the final product in the building are considered. Cracking occurred 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.

Users of our IMPACT Design software can also benefit from full integration of hollowcore calculations whilst detailing hollowcore floor layouts. 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.

Features and benefits

  • Design most types of prestressed elements. Including rectangular beams, T-beams, hollowcore slabs, flange-beams, normal and sloped I-beams
  • A quick overview of all stages with utilization curves or check the numerical results according to the current code
  • Calculate according to national codes and Eurocode with country-specific annexes
  • Fast and accurate presentation for the whole life-span of prestressed concrete elements (detensioning, stock yard, transport, lifting/handling and final placement)
  • Fire-design of concrete elements according to EN1992-2 with complementary code EN1168 for hollow core members
  • Strand Pattern Manager to optimise prestress configurations
  • Splitting, spalling and bursting considered
  • Toppings, line loads, point loads, recesses, flexible supports, torsion all considered


Introduction Video

  • Get an overview of how PRE-Stress works
  • Get an overview of how PRE-Stress can help you with your design


Click on Get Started Now to get in touch for more information; a free trial, pricing and options. 

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.

Hollow core slab design

With the latest features, PRE-Stress is the perfect tool for designing your precast hollow core slab. Quickly import the cross section from AutoCAD, add the loads and carry out your calculation. Load combinations can be generated automatically and you can perform checks for spalling and fire. 

SIB design

Design your sloped I beams with PRE-Stress and save time on your calculation. The inclined bars are aligned automatically to the slope of the beam and continuity is ensured through the full-bond option.

Fire design

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

KB beams

PRE-Stress is the perfect tool for calculating and designing KB beams. Study the behaviour of the beam under torsion by applying loads with eccentricity and get an automatic detailed report of the internal forces and Eurocode check.

TT and STT beams

PRE-Stress is the perfect tool for calculating and designing double T beams. Apply the strands automatically with the reinforcement pattern and get an automatic detailed report of the internal forces and Eurocode check.

Training videos

In this training material, we are showing the analysis and design of a prestressed concrete precast element, as well as fire calculations carried out in PRE-Stress 6.4. 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.

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

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Support contacts 
Sweden: +46 (0)40 530 191
Rest of the world: +45 2683 2424