Overview
NDTScan provides concrete scanning in Longwick as part of its core Buckinghamshire coverage. The company is based in Oxford and led by Neil Smuts, who carries out and interprets the surveys himself rather than passing the data to a back office. For Longwick clients that means one accountable specialist from the first call to the final report.
Longwick lies in Buckinghamshire, and what NDTScan is asked to look at here reflects Buckinghamshire as a whole: Chiltern market towns, post-war new town estates and a large stock of mid-century schools, hospitals and council housing. Wherever the work sits in Buckinghamshire, the question NDTScan is answering is what the concrete actually contains, and how much of it can be trusted.
What separates a dependable concrete scan from a superficial one is the interpretation. NDTScan concentrates most of its effort after the site visit: reviewing every radargram, correlating GPR with Ferroscan and ultrasonic data where the element demands it, and writing a report that an engineer can act on. Longwick clients receive that standard of work as a matter of course.
One caveat applies to every Longwick project. No structural repair to a concrete element should be specified or carried out until the structure has been properly scanned and the data expertly interpreted. Repairing what has not been correctly understood risks repeating the fault, and the scan is the cheapest part of getting it right.
Scan before you repair. That is the standing advice for every Longwick client, and the reason NDTScan reports what the concrete contains before anyone specifies what to do about it.
Services Available in Longwick
- GPR Concrete Scanning Pre-drill and pre-coring surveys, rebar and mesh mapping, post-tensioned tendon detection, void and honeycombing detection, slab thickness and cover estimation and RAAC identification. Method and antenna selected for the Longwick element in question, with the full interpreted record supplied.
- Ultrasonic Testing of Concrete Ultrasonic pulse velocity testing for uniformity and quality assessment, pulse echo for thickness and delamination where only one face is accessible, and the combined SONREB method for compressive strength estimation. Used across Buckinghamshire where GPR alone cannot answer the question.
- Concrete Compressive Strength Assessment Rebound hammer surveys, UPV combined method and managed core extraction with laboratory testing to BS EN 13791. Independent reporting suitable for engineering acceptance, building control and dispute work on Longwick structures.
Typical Longwick Projects
In and around Longwick, NDTScan is most often asked for pre-drill and pre-coring surveys, post-tension detection in suspended slabs, RAAC identification in education and community buildings, rebar and cover mapping to support engineering assessments, and interpreted investigation of existing concrete before any repair is designed.
NDTScan also covers Princes Risborough, Thame and Great Kimble and the rest of Buckinghamshire. Every one of these areas is reached from the Oxford base without a subcontractor in the chain.
About NDTScan
NDTScan is a specialist non-destructive testing company based in Oxford and led by Neil Smuts. Its core disciplines are GPR concrete scanning, ultrasonic testing and in-situ compressive strength assessment, brought together in its concrete scanning and structural condition survey service. NDTScan is a Level 4 UKCSS Operator, the first in the UK to achieve that certification. Longwick and the whole of Buckinghamshire are within the company's everyday working area, and all work is reported to a standard suitable for engineering acceptance. RAAC identification is covered on the RAAC surveys page, and steel on the ultrasonic thickness and corrosion mapping page.
Longwick NDT Services
- GPR Pre-Drill Scanning Pre-drill and pre-coring surveys, PT slab mapping, rebar location and void detection across Longwick housing, commercial and public buildings.
- Post-Tensioned Slab Investigation Tendon detection and full slab documentation for Buckinghamshire commercial, education and healthcare structures before any fixing, cutting or coring.
- RAAC Identification GPR based RAAC plank identification for schools, halls, housing and public buildings across Buckinghamshire, reported in line with IStructE guidance.
- Ultrasonic Pulse Velocity Testing UPV surveys using the Proceq Pundit PL-200 to BS EN 12504. Uniformity, delamination and strength estimation for Longwick structures.
- Compressive Strength Assessment Rebound hammer, SONREB and managed core extraction to BS EN 13791, reported for engineering acceptance and building control in Longwick.
- Short-Notice Longwick Coverage Oxford-based team covering Longwick and the rest of Buckinghamshire. Immediate mobilisation available, with every survey interpreted and reported in full.
Our Services
- Concrete & Structural Integrity
- Drone-Based Aerial Surveying
- Vehicle-Mounted Inspection
- Handheld & Portable Inspection
- Underwater Surveying & Inspection
- Digital Twin & 3D Modelling
- Advanced Data Analytics & Reporting
Sectors We Support
- Aerospace & Aviation
- Education & Public Sector
- Archaeology & Heritage
- Smart Cities & Urban Planning
- Waste & Recycling
- Defence & Security
- Emergency Response
- Construction & Real Estate
- Mining & Minerals
- Agriculture & Environment
- Maritime & Underwater
- Rail & Transportation
- Oil & Gas
- Civil Engineering
- Utilities & Energy
Equipment & Technologies
- IML
- GSSI
- Sylva
- Leica
- Voyis
- Testo
- Hilti
- Cygnus
- Proceq
- MALA GPR
- SlipAlert
- Flyability
- Protimeter
- Matterport
- Saab Seaeye
- Deep Trekker
- IDS GeoRadar
- FLIR Systems
- Sonatest Ltd
- Wagner Meters
- Mistras Group
- Munro Stanley
- Blue Robotics
- DJI Enterprise
- Teledyne Marine
- Quantum Systems
- Argus Electronic
- Fakopp Enterprise
- Eddyfi Technologies
- Olympus Corporation
- FARO
- NavVis
- Trimble
Why Choose NDTScan
Longwick Concrete Scanning FAQs
Frequently Asked Questions.
The questions Longwick clients ask most often about concrete scanning, RAAC identification and structural investigation, answered by the specialist who does the work.
Can NDTScan carry out a GPR survey in Longwick?
Yes. GPR concrete scanning is NDTScan's core service and Longwick, Buckinghamshire is inside its everyday working area. Neil Smuts plans the survey, captures the data on site and interprets it himself, so there is one accountable specialist from instruction to report.
What will a concrete scan tell me about a Longwick building?
What the data indicates is inside the concrete and how far each reading can be trusted. A survey indicates the position and estimated depth of reinforcement, post-tensioned tendons, embedded services and voids, and estimates slab thickness and cover. For a Longwick building that is the difference between a decision made on evidence and one made on the drawings, and between a repair designed for the structure that exists and one designed for the structure someone assumed.
Can you identify RAAC in Longwick buildings?
Yes. NDTScan uses GPR to distinguish reinforced autoclaved aerated concrete planks from conventional reinforced concrete, and reports the findings in a form that supports the building owner's duties under IStructE guidance. RAAC identification is a regular instruction across Buckinghamshire schools, halls, housing and healthcare stock, and Longwick is no exception.
Is a scan really necessary before concrete repairs in Longwick?
Yes. A repair specified without a proper scan and an expert interpretation is a repair to a guess, and it risks repeating the fault that caused the damage. The survey establishes what the Longwick element actually contains and how it is behaving, so the engineer designs for the structure that exists. The scan is the cheapest part of getting the repair right.
What do I receive after a concrete scan in Longwick?
A fully interpreted report, not a photograph of marks on a slab. The data is post-processed in the office, cross-checked and written up with clear statements of what was found, what was not found and the confidence attached to each. It is written for the engineer or contractor who has to act on it in Longwick, and it stands up to design, dispute and audit scrutiny.
Concrete scanning guides
The questions behind most enquiries
How to identify RAAC
What RAAC looks like, where it was used, and what a visual check cannot tell you.
Read the guideScanning before drilling or coring
What happens on the day, what the marks mean, and what the contractor receives.
Read the guidePost-tension detection
How tendons are investigated in a post-tensioned slab, and when the engineer decides.
Read the guideRebar scanning
Bar position, spacing and estimated cover, and what a scan cannot tell you.
Read the guideFerroscan surveys
What the Hilti system does well, and where radar takes over.
Read the guideConcrete x-ray
Why radiography is rarely practical on site, and what replaces it.
Read the guideWhat clients and partners say
In their words
I have worked with Neil on a number of projects and have found him to be extremely knowledgeable in the fields of concrete scanning and structural repair. His approach to the task is very structured and professional, and communication throughout the project is always open and honest. I will be working with Neil again in the future, and I would happily recommend him.
I had the pleasure of working with Neil on a complex project involving structural remediation, where his expertise was key to our success. Neil was professional, knowledgeable, and solution-focused throughout. He worked seamlessly with the client team and brought the right attitude to every challenge.
Neil is an expert in his field, with a high level understanding of concrete scanning techniques, concrete repairs, and the technology that suits. He shows a keen interest in innovation and is open to learning new methodologies. I would highly recommend Neil to those seeking his services.