Geotechnical and structural monitoring are essential in today’s complex construction sites. By providing real-time data, these tools and processes help to prevent potential failures, delays and safety issues from impacting construction projects.

Read on to learn more about how geotechnical and structural engineering work.

What is geotechnical and structural monitoring?

Geotechnical and structural monitoring play a critical role in construction by providing real-time data collection about ground stability and the performance of built structures. And while these two measurements are typically used together, they serve slightly different purposes.

Geotechnical engineering is used to measure ground conditions, including movement, pressure and moisture, to assess stability and risk. This enables operational efficiency and informed decision making by providing civil engineering teams with real-time insights into soil movements and ground behaviour. Alternatively, structural monitoring is used to track structural behaviour over time, detecting deformation, strain or cracks.

Ultimately, the purpose of these two measurements is to gather reliable data on soil behaviour, foundation movement and structural integrity to inform design, construction and maintenance decisions. Long term monitoring ensures you have the data management systems in place to track performance across your project lifecycle.

The importance of geotechnical and structural engineering in modern construction

Maintaining a safe and compliant work environment is key for all construction projects. It’s for this reason that project managers are implementing structural and geotechnical monitoring to provide real-time data and automated readings, helping to reduce response times and avoid costly delays or failures. These issues can pose serious safety concerns to public safety, as well as significant financial and legal consequences if left unchecked.

Modern construction projects are typically more complex, often featuring deeper excavations, taller structures and tighter site constraints. High rise buildings and complex infrastructure require extensive experience in monitoring and interpretation. These factors increase the risk of ground movement, settlement or structural stress. Geotechnical assessments allow for early detection of potential issues, such as:

Ground subsidence or shifting, Foundation movement, and Excessive structural load or vibration.

This allows project teams to identify weaknesses early, before they escalate into failures, collapses or costly rework.

What is deformation monitoring, and how does it fit in?

Deformation monitoring is a subset of structural and geotechnical engineering that focuses on movement and shape changes of a structure or ground surface over time. Similar to geotechnical and structural analysis, deformation monitoring provides precise data on how a structure or the surrounding ground is moving, whether that’s settlement, tilting, bending or shifting.

Deformation monitoring relies on a range of high-precision sensors and instruments to collect continuous or periodic data. These tools measure how much a structure tilts, bends, shifts or settles, providing insight into stress responses in both the soil and the structure itself. Here’s how:

• Tilt nodes measure angular rotation in walls or slabs, ideal for monitoring critical infrastructure, railways, slopes and tunnels
• Vibrating wire strain gauges detect internal strain, pressure and displacement across critical assets, such as concrete, steel or other materials, allowing for the early identification of stress-related issues.
• In-place inclinometers use advanced laser measurement technology to monitor lateral ground movement and lateral displacement, helping track structural movement and tilt for tunnels, retaining walls, bridge abutments and rail infrastructure.

The data gathered via deformation monitoring tools are central to maintaining safety, ensuring compliance with design tolerances and avoiding costly delays or remediation. By identifying subtle changes early through real time insights, project teams can take corrective action before small issues escalate into major failures.

Control Hire’s deformation monitoring solutions integrate these advanced sensor technologies into a tailored, real-time monitoring system. By ensuring continuous data visibility across construction and infrastructure projects, we’re able to help our clients stay ahead of risks, protect critical assets and keep projects moving on schedule.

What Gets Monitored: Common applications across geotechnical, structural and deformation monitoring

While geotechnical, structural and deformation monitoring are often used together, these monitoring technologies are typically used to measure different elements. Let’s take a closer look at some examples of what elements are monitored using each approach. 

Geotechnical testing

Focuses on ground conditions and soil behaviour:

• Slope movement: to detect landslides or embankment instability
• Ground settlement or heave: especially around excavations or tunnels
• Pore water pressure: to assess soil saturation and stability
• Earth pressure on retaining structures: like shoring walls or sheet piles
• Soil displacement: to track movement due to loading or unloading

Structural engineering

Monitors the performance and integrity of built structures:

• Crack widths and propagation: in walls, bridges, tunnels or slabs
• Structural loads and stresses: on beams, columns or foundations
• Vibrations: caused by traffic, construction equipment or seismic activity
• Joint movement: in expansion joints or connections
• Differential settlement: between different parts of a structure

Deformation monitoring

Tracks positional or shape changes across ground and structures:

• Tilt or rotation: of retaining walls, buildings, cranes or bridge piers, measured with tilt nodes
• Strain and stress: within structural members, measured with vibrating wire strain gauges
• Displacement and drift: using total stations, GNSS or laser sensors
• Lateral ground movement: via inclinometers or extensometers
• Surface deformation: over time, such as subsidence or bulging

When to engage engineers or monitoring consultants

Structural and geotechnical engineering are critical for ensuring the safety and stability of your next construction project. It’s for this reason that many project teams bring in geotechnical engineers or structural engineering consultants to design and interpret specialised monitoring programs. As part of their role, these professionals guide geotechnical testing services, select equipment, compile geotechnical reports and provide actionable insights.

At Control Hire, we have extensive experience working alongside geotechnical engineers to provide the right deformation monitoring equipment and geotechnical instrumentation. Our installation expertise ensures equipment is deployed correctly to capture accurate environmental conditions and real time data collection. So, if you’ve already got consultants onboard, get in touch with the Control Hire team to arrange specialist equipment hire.