
LimitState
Stand E7
LimitState develops advanced civil and structural engineering analysis software, trusted worldwide by engineers and asset managers.
Our products include industry-leading tools for masonry arch bridge assessment, geotechnical analysis, reinforced concrete slab analysis, and structural optimisation. By combining cutting-edge research with practical expertise, we deliver software that transforms complex problems into clear, reliable solutions.
Engineers, consultants, and infrastructure owners use LimitState tools to save time, reduce costs, and extend the life of critical assets, while making confident, informed decisions on today’s most demanding structural and geotechnical challenges.
Documents
Products

LimitState:RING
Fast, intuitive software for masonry arch bridge analysis, widely used by engineers and bridge owners worldwide. Evaluate structural performance, calculate safety factors, and explore repair or strengthening options confidently, saving time and costs.

LimitState:GEO
Powerful geotechnical analysis for highways and transport infrastructure, trusted globally. Assess slope stability, embankments, retaining walls, and foundations quickly, turning complex soil mechanics into clear, reliable results.

LimitState:SLAB
Advanced software for reinforced concrete slab analysis using a unique automated yield-line methodology. Quickly evaluate bridge decks, floor slabs, and other RC elements, checking strength, serviceability, and optimising design efficiently.

Peregrine
Layout optimisation plug-in for Grasshopper, helping engineers design efficient, material-saving trusses and frameworks. Widely used throughout research and practice, Peregrine turns complex geometry and construction constraints into practical, high-performance structures.
Videos
LSWEB23-2 | Better Geotechnical Analysis and Design with LimitState:GEO
With the increasing prioritization of efficient solutions in construction, geotechnical engineers can play a major part in helping to drive innovation and resourcefulness throughout the industry.
By harnessing the power of the Discontinuity Layout Optimisation (DLO) stability analysis method, LimitState:GEO helps pinpoint the true collapse mechanism and associated margin of safety for any geotechnical problem, promoting better understanding of the issues at hand and aiding the development of more effective solution strategies.
LSWEB25-1 - Streamlining Highway Masonry Arch Bridge Assessment to CS454 and C800 w/ LimitState:RING
Discover how to efficiently evaluate masonry arch bridges to Ultimate and Permissible Limit States (ULS and PLS) in accordance with CS 454 and CIRIA C800. Learn how LimitState:RING, the leading masonry arch analysis software, simplifies workflow and enhances your assessment process.
LSWEB18-8 | Better Assessment of Concrete Bridge Slabs using LimitState:SLAB
Learn about the automation of the yield-line method for concrete slabs and how it has been incorporated into LimitState:SLAB.
The programme includes:
- Overview of yield-line analysis, how it works and its benefits
- Automation of yield-line analysis using discontinuity layout optimization (DLO)
- Analysis of complex reinforced concrete bridge slabs using LimitState:SLAB
LSWEB22-4 | Peregrine: Structural Layout Optimization for Grasshopper
Peregrine is the powerful structural layout optimization plug-in for the Rhino3D/Grasshopper modelling environment. Perfect for conceptual design of truss-like structures. In this 30-minute introduction to the application, we:
* Consider catenaries and beams in the same domain - ideal for bridge design optimization.
* Optimize entire buildings, containing grillages, columns and trusses, in one go.
* Ensure symmetry and increase computational efficiency using a mirror plane.
* Ensure solutions aren't in a state of unstable equilibrium.
* Combine 1D, 2D and 3D design domains in the same model.