PRESTRESSING: PART 4. STRESSING. CURRENT PRACTICE SHEET 2P/19/1, NO 43

When difficulties arise in tendon stressing on site, they are usually related to: assurance of tendon loads, actual tendon/duct friction, anchorage lock-off losses. Two methods of measuring pack load are briefly described, and guidance in checking the calibration of the jack during use is given. Factors to be taken into account in measuring tendon extension are discussed. Anchorage lock-off losses are dealt with in part 3 of the current practice sheet. Practical considerations in preparing for and carrying out site prestressing operations are discussed, including positioning the jack, provision of adequate access, stressing a tendon with a 'dead' end, procedure for stressing curved tendons. Safety aspects are mentioned. Parts 1, 2 and 3 of this current practice sheet appear in the May, June and July issues of Concrete (Lond). (TRRL)

  • Availability:
  • Corporate Authors:

    Cement and Concrete Association

    Wexham Spring
    Slough SL3 6PL, Buckinghamshire,   England 
  • Publication Date: 1979-8

Media Info

  • Pagination: p. 31-32
  • Serial:
    • CONCRETE
    • Volume: 13
    • Issue Number: 8
    • Publisher: THE CONCRETE SOCIETY
    • ISSN: 0010-5317

Subject/Index Terms

Filing Info

  • Accession Number: 00310296
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jul 22 1980 12:00AM