Reduce risk, avoid programme delays and make decisions based on evidence – not assumptions.
Metal Surveying and Structural Reports:
Definitive Metallurgical Data for Critical Infrastructure
Steel frameworks and historic cast iron assemblies form the essential load-bearing backbone of industrial facilities, commercial high-rises and critical civil infrastructure. However, unlike concrete – which typically exhibits visible spalling or cracking during its degradation cycle – structural metalwork frequently conceals its catastrophic weaknesses.
Heavy-duty protective coatings, fireproofing and architectural claddings often mask severe section loss. Simultaneously, continuous dynamic loading and environmental exposure drive microscopic weld fatigue and internal metallurgical decay entirely out of sight. When assessing the remaining lifespan of legacy steelwork or planning a commercial capacity upgrade, relying on legacy blueprints or superficial visual inspections is dangerously inadequate.
You cannot guess the yield strength, structural fatigue or tensile viability of a century-old structural frame. To engineer a safe, compliant intervention, you need empirical, mathematically defensible data.
The Invisible Threat of Metal Fatigue and Weld Failure
Relying on a superficial visual survey or outdated legacy drawings leaves your project exposed to immense risk. A layer of industrial paint can easily hide severe section loss caused by corrosion, while the naked eye cannot detect internal weld fractures or microscopic fatigue cracks within the steel matrix.
When you are altering the load distribution of a building, extending the lifespan of a civil bridge, or repurposing a heritage cast-iron structure, assuming the integrity of the metal is a dangerous gamble. If a critical connection fails or a degraded beam buckles under new stress, the results are devastating. To engineer a safe, compliant strengthening or repair strategy, you must determine the exact metallurgical grade, current thickness, and hidden defect profile of the existing framework.
Understanding the exact metallurgical condition of legacy frameworks is essential for safe capacity upgrades. We precisely measure section loss, weld fatigue and yield strength against the definitive structural frameworks published by The Steel Construction Institute (SCI), providing you with the empirical data required to specify targeted structural reinforcements.
Forensic Testing and Actionable Engineering Data
Structural Repairs removes the guesswork from metal asset management. We provide comprehensive, forensic metal surveying that bridges the gap between material testing and practical structural engineering. Our technicians deploy a suite of advanced Non-Destructive Testing (NDT) methodologies to interrogate the steel, identifying flaws long before they compromise the structure.
Instead of simply handing you a list of defects, our qualified structural engineers translate this diagnostic data into a comprehensive Structural Report. This document details the exact remaining load capacity, calculates fatigue life, and provides bespoke, highly engineered remediation strategies.
- Ultrasonic Thickness Gauging: We measure the exact remaining thickness of steel sections from a single side, calculating precise section loss due to historic corrosion.
- Weld Interrogation: Using Magnetic Particle Inspection (MPI) and Dye Penetrant Inspection (DPI), we reveal microscopic surface and near-surface cracks in critical welded joints and bolted connections.
- Metallurgical Sampling: For historic or undocumented structures, we extract micro-samples for laboratory analysis to determine the exact carbon equivalent value, yield strength, and weldability of the metal.
- Engineered Solutions: Our reports do not just highlight the problems; they deliver the engineered solutions required to restore total structural integrity.
These non-destructive methodologies are executed in strict accordance with the testing protocols established by the British Institute of Non-Destructive Testing (BINDT), ensuring flawless data capture without compromising the physical asset.
Metal Surveying Technical FAQ
A comprehensive survey begins with a targeted visual inspection to identify areas of obvious distress or corrosion. This is followed by advanced Non-Destructive Testing (NDT) to locate hidden defects, thickness gauging to measure section loss, and, if necessary, the extraction of physical samples for laboratory metallurgical analysis.
We utilise a variety of NDT techniques depending on the specific asset. Ultrasonic Testing (UT) uses high-frequency sound waves to detect internal flaws and measure thickness. Magnetic Particle Inspection (MPI) and Dye Penetrant Inspection (DPI) are used to detect microscopic cracks and discontinuities on or just below the surface of welds and high-stress nodes.
In older buildings, industrial sites, and heritage structures, the “as-built” reality rarely matches the original drawings. Unauthorised modifications, undocumented repairs, and natural degradation over decades alter the structural capacity. Furthermore, historic metals like cast iron or early mild steel possess highly variable metallurgical properties that must be verified before any welding or load alterations take place.
Our Structural Reports provide a complete digital and physical health record of the asset. They include detailed defect mapping, the results of all NDT and laboratory tests, precise calculations of current load-bearing capacity, and a prioritised, engineered strategy for any required structural strengthening or repair.
We do not simply hand over raw metallurgical data. Our findings are compiled into comprehensive, actionable documentation that aligns with the professional reporting standards mandated by the Institution of Structural Engineers (IStructE). This ensures your principal contractors have the exact certified evidence required to proceed with complex remedial works.
