STRUCTURAL MONITORING SURVEYS
THS Concepts provides easy to understand movement data for structures that are undertaking or near to construction works such as basements, extensions, underpinning etc.
Used by Party Wall Surveyors and contractors across London and the South East, we provide easy to understand monitoring reports to record structural movement over time.
We help put your mind at rest during your building works by undertaking detailed monitoring surveys and producing clear, easy to read reports that will help demonstrate movement, or the lack of, during a building project.
Our monitoring service is typically utilised during projects where underpinning, basement excavation, and party wall works are taking place. The monitoring reports reports help clients satisfy key requirements and agreements with neighbouring property owners.
During major structural works we recommend speaking to your project manager about monitoring intervals. Usually during heavy structural works the monitoring surveys are undertaken on a weekly basis and then moving to a monthly basis when the less intrusive works are taking place.
The Monitoring Survey Process
MONITORING PROPOSAL DOCUMENT
Prior to arriving on site we always issue our clients with a free monitoring proposal document outlining things such as where we are putting targets, what equipment we will be using and the movement trigger levels.
This document is helpful it clearly outlines the process and details for those who may not understand the monitoring survey process.
SETTING UP THE TARGETS
On our first site visit we will install the targets that we will be monitoring. These are usually white 25 x 25 mm sticky backed targets that are either mounted to the wall directly or secured on to metal brackets with adhesive.
For targets that aren’t on ground level we usually ask our clients to arrange access with ladders or access platforms however this is something we can arrange ourselves.
ISSUING REPORTS & GRAPHS
Once we have installed the targets we then return at set intervals to survey in and monitor the targets. Using a Leica Total Station we can record the vertical and horizontal movement to within 1 mm.
Following this we then issue a detailed, easy to understand report illustrating the movement. We can also issue graphs illustrating the movement over time on each point.
Key Benefits Of Our Service
Have Confidence In Our Service
Our professional service provides you with peace of mind with our £5,000,000 professional liability insurance and £5,000,000 public liability insurance. We also offer a 100% money back guarantee on all of our work if you are not happy with the result! We’re also happy to provide health and safety documents if required.
Professional Reports & Data
Your reports will show horizontal and vertical movements over time in a clear, easy to read manner. We typically return all monitoring survey reports within 1 day of the survey. If we notice any major movements whilst on site then these will be flagged to the relevant site team member
Excellent Client Relationships
Our Google & TrustPilot reviews demonstrate the level of customer service we provide both before and after a project has finished. Our experienced monitoring survey team have undertaken a number of different projects ranging in size from small underpinning to jobs to large 3-storey basement excavations.
Trust Our Measurements
Our surveys are undertaken using precise Leica equipment. You can trust that your design proposals will work with the space you have.
Let’s Get Your Monitoring Project Moving Today
Small or large, get in touch today to discuss your monitoring project and we can get back to you with a quote and a proposed start date.
Recent Client Reviews
“Very professional and efficient service provided. We have a slightly awkward property that required extra time to complete the survey work but that was not a problem or concern. Very pleased with the work performed.”
“THS Concepts provided our architectural firm with a movement monitoring survey over the course of several months, and were very helpful throughout the whole process from their transparent pricing to quick turn around times. They were friendly and professional and I wouldn’t hesitate to use them again.”
“As an experienced professional construction manager I would have no reservations in recommending THS. I am very pleased with the service they have provided me.”
FREQUENTLY ASKED QUESTIONS
We have worked on over 1000 surveying-based projects and have an experienced survey team from engineering and architectural backgrounds. We pride ourself on our customer service and our high standards, but don’t just take our word for it: have a look at what our previous clients have said.
We have worked as far away as Liberia in West Africa. However, 99% of our work is undertaken in London and the South East. This includes counties such as Essex, Hertfordshire, Kent, Suffolk, Surrey and Sussex.
If you are outside of these areas we are more than happy to provide you with a quote. Read more about the areas we cover.
- Monitoring survey report outlining movement since the start of the project & since the last reading.
- Monitoring graphs to easily visualise horizontal and vertical movement over time.
- Photographs showing any visible signs of cracks (please request).
We work on a variety of project sizes – from simple domestic title plan/boundary surveys to large construction projects. You can learn more about our previous projects by reading our blog.
Our exemplary customer service, friendly team and excellent communication. We offer a 100% full refund if you are not satisfied with our work (not that anyone has ever needed to ask us for one!). Our experienced, professional team has a mixed background of Civil Engineering and Architectural Design. Learn more about our company here.
We carry £5,000,000 professional indemnity insurance and £1,000,000 public liability insurance, copies of which can be sent upon request.
Our typical lead-in times for surveys are 5 – 15 working days (on average, we get to your site within 7 days of your initial enquiry). Each job has a different turnaround time for completing drawings; a full set of measured survey drawings typically takes 3 – 6 working days, while some basic CAD draughting services can be turned around the same day. Typically we return monitoring survey reports within 24 hours of undertaking the monitoring survey; if requested we can usually get results back sooner.
If you are really pushed for time then please let us know and we shall see what we can do for you!
Cost depends on the job. We offer fixed-price quotes based on an estimation of the time required for your job, emailed to you as a formal PDF document including our terms and conditions, a suggested survey date and expected completion of the drawings. We aim to provide a price within 24 hours of enquiry.
Typically we fix 25 x 25 mm reflective tape targets to walls using epoxy glue. The reason being is that the targets have to be very secure to allow the subsequent surveys to be undertaken as accurately as possible. We ttry and place all targets away from locations where they can be peeled off and in areas where paintwork damage can be reduced.
If we need to fix prisms then this usually requires a little more work as we may need to drill into existing walls to fix and resin them in.
Sometimes, depending on our availability and staff requirements. If your project requires us to visit on evenings or weekends please let us know and we will do our best to accommodate you.
At THS Concepts we provide our surveyors with a method statement on how the work should be undertaken combined with a risk assessment outlining potential dangers on site and how these can be mitigated. If you need these supplied for your project then please let us know so as we can send before we arrive.
We fully understand the need to observe good health and safety practices for our staff and the people we work with. If requested we can provide full health and safety documentation for the work we undertake including method statements, risk assessments, COSHH etc.
We can supply you with a monitoring survey proposal which outlines elements such as where targets can be positioned etc. We do advise that you speak to a Building Surveyor who can verify or set out the monitoring survey requirements.
No problem at all. If you follow the link below you will see an example PDF report from a previous job we have undertaken. We have also attached an example graph showing the movement on one point. For privacy reasons, we have had to take the job name details off of the report.