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ASTM D7737-11

Current Revision

Standard Test Method for Individual Geogrid Junction Strength

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1.1 This test method is an index test which provides a procedure for determining the strength of an individual geogrid junction, also called a node. The test is configured such that a single rib is pulled from its junction with a cross-rib to obtain the maximum force, or strength of the junction. The procedure allows for the use of two different clamps with the appropriate clamp selected to minimize the influence of the clamping mechanism on the specific type of geogrid to be tested.

1.2 The values stated in SI units are to be regarded as the standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


This index test method is to be used to determine the strength of an individual junction in a geogrid product. The test is performed in isolation, while in service the junction is typically confined. Thus the results from this test method are not anticipated to be related to design performance.

The value of junction strength can be used for manufacturing quality control, development of new products, or a general understanding of the in-isolation behavior of a particular geogrids junction (for example., in relation to handling during shipment and placement of the geogrid).

This test method is applicable to geogrid products with essentially orthogonal ribs, yarns or straps, that is, geogrids which are composed of ribs, yarns or straps that are entangled through weaving or knitting, welded, bonded or formed through drawing.

SDO ASTM: ASTM International
Document Number D7737
Publication Date Sept. 15, 2011
Language en - English
Page Count 7
Revision Level 11
Supercedes
Committee D35.01
Publish Date Document Id Type View
Sept. 15, 2011 D7737-11 Revision