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Carnon Contracting

Geotechnical & Civil Engineering

Rock anchoring and soil nailing

Carnon Contracting can provide a range of rock anchor and soil nail solutions for the construction industry. We have recently added the Marini CID80 drill mast to our fleet of plant machinery.

Rock anchors are generally post-tensioned tendons installed and secured into the underlying rock.

The anchoring force is transmitted to the surrounding rock by either cement grout, resin or mechanical means. Rock anchors can be installed in drill holes with any inclination.

Carnon Contracting is experienced in both small and large scale rock anchor installations for both private and commercial sector projects.

Rock anchors are used primarily in the following situations:

  • Full anchoring of retaining walls
  • For the stabilisation of eccentrically loaded foundations
  • In the stabilisation of slopes and rock walls or cuts
  • For systematic rock stabilisation and local support for underground excavations
  • For the stabilisation for uplift purposes as, for example, in structures in ground water

 

Rock bolting projects completed by Carnon Contracting include:

  • Rock bolting a deep excavation, Newquay, Cornwall
  • Rock bolting the face of a deep excavation in Truro, Cornwall

 

Rock anchoring and soil nailingSoil nailing is used in soil or loose rock. Soil nails transfer forces into the ground by means of a steel tendon or bar. The stressing end of the nail may use a nut or a plate, or wedges and a wedge plate depending on the type of tendon used.

Soil nailing or anchors are used in the following situations:

  • The anchoring of support structures for excavations such as sheet piling or trench boxes
  • The stabilisation of slopes
  • The transfer of external tensile forces to the ground, such as in the use of guy wires for towers
  • In the stabilisation of very eccentrically loaded foundations

 

Projects completed by Carnon Contracting include:

  • Guy wire anchors for a BBC mast at Longdowns, Cornwall
  • Rock bolting, shotcreting and meshing at residential property, Falmouth, Cornwall
  • Rock bolting and meshing for residential property, Feock, Cornwall

 

Contact us if you would like further information on this service.

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