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-, <br />{ <br />The GCL should be placed so that seams are parallel to the direction of the slope. <br />End-of-panel seams should also be located at least 3 ft (1m) from the toe and crest of <br />slopes steeper than 4H:1V. End-of-roll seams on slopes should be used only if the liner is not <br />expected to be in tension. <br />5.7 All GCL panels should lie flat, with no wrinkles or folds, especially at the exposed edges of the <br />panels. When Bentomat with SuperGroove® is repositioned, it should be gripped inside the <br />SuperGroove by folding the edge. <br />5.8 The GCL should not be installed in standing water or during rainy weather. Only as much GCL shall <br />be deployed as can be covered at the end of the working day with soil, geomembrane, or a <br />temporary waterproof tarpaulin. The GCL shall not be left uncovered overnight. If the GCL is <br />hydrated when no confining stress is present, it may be necessary to remove and replace the <br />hydrated material. The project engineer, CQA inspector, and CETCO's TR-312 should be consulted for <br />specific guidance if premature hydration occurs. <br />5.9 For the convenience of the installer, hash marks are placed on Bentomat every 5' (1.5 m) of length. <br />ANCHORAGE <br />6.1 If required by the project drawings, the end of the GCL roll should be placed in an anchor trench <br />~, at the top of a slope. The front edge of the trench should be rounded to eliminate any sharp cor- <br />ners that could cause excessive stress on the GCL. Loose soil should be removed or compacted into <br />the floor of the trench. <br />6.2 If a trench is used for anchoring the end of the GCL, soil backfill should be placed in the trench to <br />provide resistance against pullout. The size and shape of the trench, as well as the appropriate <br />backfill procedures, should be in accordance with the project drawings and specifications. Typical <br />dimensions are shown in Figure 9. <br />TYPICAL ANCHOR TRENCH DESIGN <br />Compacted Soil Backfill <br />Rounded Corner <br />Varies <br />GCL <br />r---~ ' -~`® 9 of 15 <br />BENTOMAT/CLAYMAX Installation Guidelines <br />