GRI-GM19 Specification - The Geosynthetic Institute

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Field Sampling of GM Seams• no formalized procedure or standard• EPA technical guidance manual is availableEPA 600/R-93/182 (September, 1993) byKoerner & Daniel… its dated!• typical standard of 1 sample per 150 m (500ft.) is suggested• interval is based on “old” technology (solventand extrusion flat methods)• interval should be flexible depending on thequality of installation
Method of Attributes• follows <strong>GRI</strong> GM14 Standard• rewards “good” installers (with longersampling intervals)• penalizes “poor” installers (with closersampling intervals)• needs original and ongoing statistics• alternative method uses control charts;but method is not standardized
Page 1 and 2: GRI-GM19 SpecificationSeam Strength
Page 3: Seam Cross Section
Page 7 and 8: ShearTestPeel Test
Page 9 and 10: Regarding Shear Testing• 4/5 must
Page 11 and 12: Shear TestPhoto 2
Page 13 and 14: Shear TestPhoto 4
Page 15 and 16: Regarding Shear ElongationELLo(100)
Page 17 and 18: Regarding Peel Testing• 4/5 must
Page 19 and 20: Peel TestPhoto 2
Page 21 and 22: Peel TestPhoto 4
Page 23 and 24: Regarding Peel Separation• also c
Page 25 and 26: Locus-of-Break Patterns (Codes)•
Page 27 and 28: Unacceptable Extrusion Fillet Welds
Page 29 and 30: SIP in Dual Track Hot Wedge SeamSIP
Page 31: The Basic Tables FollowHDPE - smoot

GRI-GM19 Specification - The Geosynthetic Institute

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