Assessment of Existing Structures

Assessment of Existing Structures

At Liba Consulting, we provide specialist structural assessment services for existing buildings, bridges, and infrastructure. Our expert team delivers comprehensive evaluations of structural performance, safety, and residual capacity, helping clients make informed decisions for maintenance, refurbishment, and risk management.

With extensive experience in bridge assessment projects across Greece, we combine advanced engineering analysis, site inspections, and structural monitoring to deliver precise, reliable results.

Bridge Assessment Services

We offer detailed bridge inspection and assessment services, including secondary-level evaluation of ageing structures. Our approach is particularly effective when original design information is incomplete or unavailable, a common challenge for older bridges in Greece and Europe.

Our bridge assessment services include:

  • On-site structural inspections to identify defects, deterioration, and maintenance needs
  • Reconstruction of bridge geometry using modern surveying and digital capture techniques
  • Analytical modelling to simulate structural behaviour under traffic, environmental, and seismic loads
  • Evaluation of load-bearing capacity and structural performance, including seismic vulnerability
  • Recommendations for maintenance, strengthening, or retrofit
Through these projects, we have developed a robust, repeatable methodology that is transferable to other existing structures.

Our structured approach ensures reliable and technically rigorous results:

1. Structural Appraisal

We review the structural system, load paths, materials, and condition of each asset. We identify signs of deterioration, ageing, or potential safety risks, providing clients with clear insights.

2. Analytical Modelling

We develop finite element models to replicate real-world structural behaviour. Assumptions are made carefully where data is limited, including material properties, reinforcement detailing, and foundation interaction.

3. Load Evaluation

All structures are assessed under relevant load conditions, including:

  • Permanent and superimposed loads
  • Dynamic traffic loads and braking forces
  • Environmental factors such as temperature, wind, and earth pressures
  • Seismic actions with site-specific response spectra

4. Structural Analysis

We conduct elastic and advanced nonlinear analysis, providing insights into stress, deformation, and structural performance under real-world conditions.

5. Seismic Assessment

For structures in seismically active regions, we provide dynamic and probabilistic seismic evaluation, including modal analysis, response spectrum assessment, and capacity curve interpretation.

6. Structural Health Monitoring

Where available, we integrate real-time monitoring data to calibrate analytical models, validate assumptions, and track long-term trends in structural behaviour.

Managing Uncertainty in Existing Structures

Existing structure assessment inherently involves uncertainty due to incomplete design records, unknown material properties, and variable foundation conditions. At Liba Consulting, we:

  • Apply transparent engineering assumptions
  • Incorporate robust modelling and sensitivity analysis
  • Provide actionable recommendations for risk management and asset maintenance

This approach ensures that our clients can make confident, evidence-based decisions.

Beyond Bridges: Buildings and Infrastructure

While our expertise has been honed through bridge assessments, the same methodology applies to a wide range of existing structures, including:

  • Commercial and residential buildings
  • Industrial and temporary structures
  • Retaining walls and civil engineering assets

Our approach combines site inspection, analytical modelling, and monitoring data to deliver reliable structural assessments for any asset type.

Why Choose Liba Consulting

By choosing Liba Consulting for structural assessments and bridge inspections, clients benefit from:

  • Independent, technically rigorous evaluations
  • Identification of structural risks and vulnerabilities
  • Practical, cost-effective recommendations for maintenance, strengthening, or retrofit

Ready to Discuss Your Project?

Whether you need structural calculations, beam design, support with building regulations, or advice for an extension or loft conversion, we’re here to help. Send us your details and we’ll come back to you with a practical next step.

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