Building Testing Limited (BTL) provides an independent, professional, cost-effective and expedient consultancy, inspection and testing service to the building, construction and consumer product industries.
Based at their offices and laboratory in Woking, Surrey BTL offer a comprehensive range of facilities for on site and laboratory based assignments for:-
Building Industry
Professionals
Developers, Owners and Occupiers
Contractors and Subcontractors
Manufacturers
Certifiers
Users
Trading Standards
Company Policy
To carry out all assignments
in a professional, timely manner, to a high degree of accuracy and quality,
and in reflection of client requirements.
To generate assignment reports that provide an independent, authoritative and
traceable record of evidence.
The Team
A team of dedicated engineers, technologists and technicians aim to provide an enhanced level of service through responsive, qualified and strict attention to detail.
The company principals are
Paul Nice
During an extensive and diverse career at home and abroad including 17 years
as manager of the Test Development & Building Investigation Department of
a leading organisation, he has developed a comprehensive knowledge concerned
with the design, manufacture, installation, performance and evaluation of building
and consumer products.
He is a recognised expert in construction analysis and the preparation of investigative reports.
Ian Collins
With a sound base in laboratory practise and having formerly been a founding
director of an independent laboratory, he brings a wide-ranging experience in
all aspects of standard and customised testing procedures and the provision
of dedicated attention to the client needs.
He is exceptionally skilled in laboratory procedures and site testing, and is responsible for BTL technician training programmes, maintenance of the BTL quality systems and third-party accreditation.
Accreditation
Quality Assured and Registered Firm in accordance with BS EN ISO 9001 : 2000 for the Provision of Testing, Inspection and Consultancy Services.
Further third party accreditation
is pending
Member of the British Standards Institute, Building Services Research and Information
Association, and Institute of Leisure and Amenity Management
Facilities
The company operates from offices and quality accredited laboratories at Woking, Surrey to service all disciplines within the building, construction and consumer products industry.
Dedicated laboratory test facilities are provided for access floors, barriers, construction and consumer products.
Dedicated site testing equipment is provided for evaluation of access floors, air tightness of plenums and compartments, load bearing capacity, thermal properties, water tightness of facades.
Customised test equipment and evaluation programmes are established as required. Staff are qualified and trained in laboratory and testing practices.
A technical inspection and consultancy service is provided.
Access floors
Technical consultancy; specification validation, laboratory testing; site testing,
defect analysis. Paul Nice was a consultant to the PSA.MOB during development
and implementation of the universally recognised PSA specification.
Air leakage
Building compartments, raised access plenum floors, doors & windows.
Automotive products
Body parts, bumpers, lifts & jacks.
Barriers
Pedestrian & vehicle barriers; arenas, balconies, balustrades, car parks; parapets, stadiums.
Consumer products
Specific, comparative and benchmark testing, customised evaluation programmes, defect analysis. Conformance with General Product Safety Regulations
Environmental
Energy conservation; air tightness, compartment pressure testing, thermal imaging, sick building syndrome.
Expert witness
Technical expert advice relating to access floors, building services, facades, roofing
Facades
Cladding, doors & windows, stone and aluminium facades for air leakage, water penetration, thermal properties and impact
Fixtures & fittings
Anchors, doors, gates, partitions, plumbing, shelving, .
Furniture
Garden, household &
office furniture.
Glazing
Glass, stone and aluminium facades for air leakage, water penetration and impact
Health & safety
Method statements, risk assessments.
Load testing
In situ loading tests on anchors, balustrades, bridges, cladding, cradle rails, fixings, floors and lift beams,
Materials
Rainwater goods, floor covering, plumbing goods, paving,
On site testing
Condensation, damp penetration, defect analysis, water penetration.
Quality checks
Product appraisal, testing to specification, screen testing & type testing
Structural anchors
Routine testing of anchors, fixings, hooks
Swimming pools
Building & basin defects, building services, floor coverings, pool furniture, pool surrounds, risk assessments, suspended ceilings, tiling, ventilation, water penetration.
Tools & equipment
Hand & power tools, submersible pumps, extract fans
Trading Standards
Product testing, risk analysis, defect analysis, failure investigation. Conformance with General Product Safety Regulations
Typified by the generation of assignment reports in support of:-
Correlation of UK,
EN, USA and industry-norm specifications
Technical evaluation
Tender analysis
Product evaluation & development
Quality management systems
Operation and maintenance manuals
Case investigations
Examples of standard and customised testing and evaluation regimes include:-
Access floors; air
tightness; load capacity
Balustrades, barriers & parapets
Condition surveys
Cladding & glazing
Energy conservation; environmental conditions, air & water tightness,
thermal imaging
Floors; floor coverings, paving
Loading; floors, roofs, walls, fixtures & fittings
Post-installation inspection
Walls & partitions
Product evaluation entails the application of physical and mechanical measurement techniques including:-
Dimensions, density,
thickness, weight
Temperature & humidity
Load capacity; static, dynamic, cyclic, rolling, safety factor, ultimate.
Pressure & flow
A wide range of products are evaluated.
Comparative, benchmark
and performance testing
Routine testing in accordance with National and International Standards,
industry norms, in-house specifications
Development of customised testing programmes
Evaluation of products for operability, productivity and durability
Evaluation of materials for specification compliance and fitness for
purpose
Production testing throughout the manufacturing, supply, installation
and service life cycle.
Complaints investigation comprising defect analysis in both the service
environment and under laboratory conditions as appropriate.
TASK:
Some fifty thousand square metres of raised access floors installed throughout the office areas were to function as air plenums.
In the interests of energy conservation and efficient utilisation of mechanical plant, the floor in all areas was required to be pressure tested and measured for air tightness.
REPORT:
Carried out during the fit-out phase, our enhanced on-site testing service and purpose-made test equipment enabled us to provide timely results to a high degree of accuracy.
By working closely with the Specialist Subcontractor, the stringent air tightness specification was achieved on all areas of the raised access floors and the associated physical boundaries forming the voids beneath.
Our succinct reports were then available for incorporation into the respective building O & M Manual.
The total area of similar recent tests we have carried out on a wide variety of projects in the UK now exceeds one hundred and ten thousand square metres.
Wrought iron gates damaged by traffic
TASK:
With apparent malicious intent, a driver crashed his car into one of the large, heavy and highly decorative gates of a London Palace.
In preparation for re-hanging of the gate, it was required that one of the substantial hinge brackets was mechanically load tested in situ to assess the security of its embedment in the supporting stone pier.
REPORT:
This unique situation required the design and fabrication of a custom-built test rig that would impose, in turn, controlled lateral and axial loads to the bracket, which was some three metres above ground level.
During all phases of loading, any movement of the bracket relative to the pier was measured to an accuracy of one-hundredth of a millimetre.
The tests were completed within one day and we understand the gate was re-hung and continues in service.
A full programme of tests on an access floor system
TASK:
In validation of the manufacturer's technical data sheets, laboratory tests were required according to MOB PF2 PS/SPU
This performance specification for platform floors was developed under the auspices of the PSA in the 1980's and remains the primary standard of measurement.
REPORT:
Our permanent test facility allows examination of a complete floor system constructed to replicate the in situ condition.
The specified test programme provides for a comprehensive product assessment within four distinct performance grades.
The considered parameters include dimensional, structural, hygrothermal, fire & safety, sound, coverings, and electrical.
Our report provided an independent, qualitative and authoritative appraisal of the floor system.
Routine testing of crowd-control barriers
TASK:
In the interests of public health & safety, a certain proportion of the crowd control barriers are required to be tested on a regular basis.
This entails in situ load testing, measurements of deflection and recovery in accordance with the guide for safety in sports grounds.
REPORT:
Using our versatile mobile test rigs a series of uniformly distributed loads were applied to the barriers in the required locations.
The degree of imposed load is governed by the respective type of barrier within and around the seating or standing areas, and to the stairs or gangways serving them.
Similar in situ tests are carried out in show grounds and arenas throughout the UK, And, at a higher degree of loading, to vehicular barriers around buildings and car parks.
Laboratory tests are carried out on a wide variety of prototype barrier designs.
Submersible pumps - comparative performance testing.
TASK:
Various submersible pumps are under consideration for inclusion in a distributor's catalogue.
In order to select the most suitable product, a programme of comparative testing has to be devised to assess relevant performance capabilities.
REPORT:
The test regime considered:-
Operability, instructions,
installation, ease of use
Productivity, flow, flow against pressure head
Durability, long term operation
Other product assessment has included:-
Automotive products
Furniture
Garden Tools
Hand tools
Kitchen and bathroom fixtures & fittings
Ladders
Power tools
Re-constituted stone paving.
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