Projects

Motorways

Lankelma’s latest truck carries out first job on Jersey(Channel Islands)

Lankelma’s latest truck is a 17 tonne GINAF 6x6 truck with excellent off road capability. This truck will be permanently based in Scotland (Glasgow). Lankelma acquired this truck in March 2004 bringing its fleet to

For its first job however it went out to Jersey. Darren Ward, geotechnical engineer, travelled out to Jersey to give one of our lunch talks on CPT. The local geotechnical fraternity gathered in the Arts Center in St Helier. The Public Services Department (PSD) found us a job just over the road. This enabled people to see the CPT in practice as well. They agreed that CPT is a very useful tool on Jersy as well enabling rapid site investigations and reporting.

For a new services tunnel we carried out two CPT’s down to bedrock at 10 metres. We also placed a piezometer at 9 metres and took two MOSTAP samples rorm 2-3 metres and from 4,5-5,5 metres

Airport Site Investigation

Over a possession of three night shifts, Lankelma CPT Ltd completed a site investigation for the construction of a new taxiway at an airport for Ritchies. Difficulties encountered included the location of some very important buried services and the time constraints placed on all workers because of security clearance and flight operations.

Thirty three tests to an average depth of ≈5.0m were completed on an area of soft grass adjacent to the aircraft dispersal and main runway that required minimum disturbance of the ground surface to control the dangers of FOD damage to air-side traffic. The all-wheel drive ‘Track-Truck’ performed impressively in the very wet conditions leaving behind only flattened grass.

M2 Motorway

Lankelma was asked by W.S.Atkins for Carillion Highways Maintenance to carry out an extensive test program on the M2 motorway in Kent. In 19, 6 hour night sessions, a total of 349 tests were carried out. Factual reporting was carried out on a daily basis. Using cone testing techniques ensured a cost and time effective investigation.

A combination of different special cones were used in the investigation. Cone and friction CPT’s were carried out to determine the material and grade of the chalk layers present. Our new Gamma Cone was used to detect variations in the natural radioactivity of the stratification. This helps to determine between the infilled clay and the highly weathered chalk. Finally we used the videocone for visual confirmation of the material.

Factual reporting was carried out on a daily basis allowing the investigation to be tailored to the site conditions. Using cone techniques ensured a cost and time effective investigation.

green field sites brown field sites motorways railways waterways and flood defences marine

research testing in limited spaces restricted access