ROCK-A-NORE. POLY IN THE OUTFALL

The article describes the use of a high density polythene pipe to reline a 100-years-old sea outfall at Rock-a-Nore, Hastings. The 1200 mm iron pipe, protected by concrete and laid on a sandstone bedrock, had been battered by rockfalls and by heavy seas. The lining pipe was made up of 12 M long sections, welded on the beach and winched in using a cable and a block and tackle at the seaward end with the winch installed on the esplanade some 500 M away. Once the inside of the old pipe had been cleaned and the excrescences at the welds of the new pipe trimmed, the lining was fed in in four lengths. Because of the frail condition of the old pipe, grouting by gravity was then carried out, the new liner being kept filled with water during grouting to withstand local pressures. The final stage of renovation was to cover the pipe with a sloped wave-wall of reinforced concrete. (TRRL)

  • Corporate Authors:

    IPC Building and Contract Journals Limited

    Surrey House, 1 Throwley Way
    Sutton, Surrey SM1 4QQ,   England 
  • Publication Date: 1980-2-21

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00319610
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jan 19 1981 12:00AM