SPECIFY, DON'T OVER SPECIFY

The authors consider seam strength requirements for high density polyethylene geomembranes and suggest that over specification can lead to unnecessary wastage and a weaker finished product. The determination of seam strength requirements based on the geomembrane yield strength is discussed. Graphs are presented showing the distribution of peel strength results for seams and yield strength results for the parent membrane. The limit of acceptable seams is examined. With too high a limit many good seams could be rejected. The subsequent replacement of the seam is likely to weaken the liner. A method is proposed whereby a minimum of 50 samples are tested for their strength . Seam strength requirements are then calculated using data from past projects. Preliminary results show a requirement of the order of 50-55%. When 65% is chosen almost half of the good seams are rejected.

  • Availability:
  • Corporate Authors:

    Industrial Fabrics Association International

    345 Cedar Building, Suite 450
    St Paul, MN  United States  55101-1088
  • Authors:
    • Giroud, J P
    • LUETTICH, S M
    • CHARRON, R M
  • Publication Date: 1993-12

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 4,6,8-10
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00663219
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Aug 24 1994 12:00AM