The article describes the bsp vibro system of cast-in-place concrete piling which offers a wide range of pile sizes and lengths. The system is suitable for a range of subsoil conditions with working loads ranging from 400-1400 kn. Piles of the required bearing capacity can be formed to a specified diameter and necessary founding depth. The system is also able to form piles up to 42 M long without using jointed tubes. Forming piles to correct lengths avoids adjusting the length of pre-formed piles after driving. The vibro system is the only one which uses the driving hammer to assist extraction of the temporary tube. The concrete normally used has a design strength of 24 n/sq mm with a 115 mm slump. The piling rigs available are described in four general categories: walking plants; rolling and sliding plants; excavator plants and leader plants. /TRRL/

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  • Corporate Authors:

    Morgan-Grampian (Professional Press) Limited

    Morgan-Grampian House, Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Pettit, J J
  • Publication Date: 1977-12

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Filing Info

  • Accession Number: 00183648
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 29 1978 12:00AM