Construction Monitoring Surveys

Movement and Settlement Monitoring

Geo Vision Surveying Inc provides construction monitoring surveys that measure changes in the position and elevation of buildings, structures, excavations and ground over time. Where stability matters, for example when excavating next to an existing building or when an engineer needs to watch settlement during construction, we measure agreed monitoring points, compare each round with the baseline and report the results clearly to the project engineer. Monitoring scope, frequency and reporting requirements are agreed before work begins.

What's Included

• Monitoring plan support: we review the engineer's monitoring requirements, the point locations and reading frequency.
• Monitoring points: installing or using agreed targets, prisms or marks on structures and ground, as specified.
• Baseline readings: precise initial measurements of every point before work begins.
• Repeat readings: the same points measured at the agreed intervals or construction stages.
• Comparison and reporting: each round compared with the baseline and earlier rounds, with changes reported in a consistent format.
• Prompt notice: when readings change by more than the limits set by the engineer, we report it promptly so the engineer can review it.

When You Need Monitoring

• Excavation or shoring next to an existing building, wall or road
• Underpinning or foundation work near neighbouring structures
• Retaining walls and embankments during and after construction
• New structures where the engineer wants settlement tracked
• Vibration-sensitive work such as piling or compaction near existing structures
• Whenever the project engineer, owner or permit asks for a monitoring program

Equipment and Methods

Monitoring relies on repeatable measurements from stable reference points. We use robotic total stations to measure targets in position and elevation, and precise levelling methods where settlement is the main concern. Reference points are placed outside the expected zone of movement and checked each round, so measured changes reflect the structure and not the instrument setup. The method, targets and expected precision are agreed with the engineer before the baseline is taken.

Deliverables

Deliverables follow the engineer's requirements and typically include:

• A baseline report with point locations and initial values
• A report for each round showing current values and the change since the baseline and the previous round
• A cumulative summary table, and charts where requested
• Point coordinates in an agreed format

Interpretation of movement and any decisions on construction remain with the project engineer.

Our Process

1. Review requirements. Send the engineer's monitoring specification, drawings and schedule.
2. Set up references and points. We establish stable reference points and the agreed monitoring points.
3. Baseline. We take and report baseline readings before work begins.
4. Repeat readings. We measure at the agreed frequency or construction stages.
5. Report. Each round is compared and reported, and changes beyond the agreed limits are reported promptly.
6. Close out. A final summary is issued when the engineer confirms monitoring can stop.

Monitoring is often paired with as-built surveys and construction layout on the same project.