Laser Scanning Surveys: A Comprehensive Guide to Advanced Site Analysis

At Michael Gallie and Partners, we have been carrying out site engineering survey services for over 50 years to leading developers, architects, engineers, contractors, and project managers.


Ensuring Accuracy with Cutting-Edge Laser Scanning Surveys Techniques

By offering an unparalleled level of accuracy, these surveys play a critical role in various site-related tasks:

1. Site Verification Surveys: Ensuring Seamless Execution

Before diving into any design or construction activity, it’s imperative to ensure that the planned works align with the actual site measurements. Surveys step in to offer complete site coverage, guaranteeing that everything fits seamlessly. The results can be showcased either in a 2D or 3D format, based on the project’s demands.

2. Foundational Surveys: Installing Primary Control & Level Datums

As projects kick off, it’s crucial to set the stage right. Surveys are utilized to lay down primary and secondary control points and level datums. This guarantees that every subsequent phase of design and construction resonates with the established project grid & datum. Plus, all stakeholders receive a digital record, ensuring everyone’s on the same page.

3. Grid & Datum Coordination: Office-Based Analysis

Before initiating on-site activities, it’s wise to verify design elements. This service cross-checks the supplied design CAD grid line & datum drawing, ensuring it’s ready for physical implementation on-site.

4. On-the-Ground Accuracy: On-Site Grid & Datum Setting-Out

This phase is all about accuracy. Surveys help mark grid lines and datums on-site. Alternatively, they can also equip on-site engineers with pinpoint accurate survey control, harmonized with the design grid and level datum, aiding in their setting-out tasks.

5. Keeping a Close Eye: Structural Monitoring

Certain projects demand continuous surveillance. Surveys are employed to position survey targets, which are then monitored over a specified duration. Utilizing advanced total stations, this monitoring can be continuous with robotic instruments or scheduled manually by on-site surveyors. The findings are then presented in a detailed report format.

6. Straight and Narrow: Verticality Survey

The importance of vertical accuracy cannot be overstated. Using laser scanning, specific areas are surveyed to determine the verticality of objects, with results delivered in both 2D and 3D formats.

7. Going Up? Lift Shaft Survey

Elevator shafts demand extreme accuracy. Laser scanning surveys assess each level of the lift shaft, ensuring that size and vertical alignment are spot on.

8. A Level Below: Floor Flatness Survey

A flat foundation is fundamental. Laser scanning pinpoints the floor’s evenness and possible deviations, providing comprehensive insights into the floor’s condition in either 2D or 3D visuals.


Embracing the Future

By providing intricate details and a higher level of accuracy, they ensure that every project, big or small, is built on a foundation of excellence and accuracy.


Michael Gallie & Partners are regulated by the RICS and have industry leading £10 million Professional Indemnity insurance cover.

If you need any advice on commissioning an engineering survey, please contact Sam Lloyd at Michael Gallie & Partners who will be happy to assist you in this matter.



1. Are the results from these surveys immediately usable for design and construction teams?

Absolutely! The data, whether in 2D or 3D format, can be directly integrated into design and construction workflows.

2. How does structural monitoring differ from other types of surveys?

Structural monitoring focuses on continuous or periodic surveillance of specific targets over time, ensuring stability and safety.

3. Can Laser Scanning Surveys detect minor deviations in verticality or floor flatness?

Yes, they are adept at identifying even the slightest deviations, ensuring every aspect of construction meets the set standards.

4. Is laser scanning suitable for both indoor and outdoor projects?

Indeed! Laser scanning surveys can be employed for both interior and exterior assessments, offering versatile application across different project types.