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SECTION 3 <br />SHIPPING, UNLOADING, & <br />STORAGE <br />3.1 <br />All lot and roll numbers should be recorded and compared to the <br />packing list. Each roll of GCL should also be visually inspected <br />during unloading to determine if any packaging has been <br />damaged. Damage, whether obvious or suspected, should be <br />recorded and the affected rolls marked. <br />3.2 <br />Major damage suspected to have occurred during transit should <br />be reported to the carrier and to CETCO immediately. The nature <br />of the damage should also be indicated on the bill of lading, <br />with specific lot and roll numbers noted. Accumulation of some <br />moisture within roll packaging is normal and does not damage <br />the product. <br />3.3 <br />The party directly responsible for unloading the GCL should refer <br />to this manual prior to shipment to ascertain the appropriateness <br />of their unloading equipment and procedures. Unloading and <br />on -site handling of the GCL should be supervised. <br />3.4 <br />In most cases, CETCO GCLs are delivered on flatbed trucks. <br />There are three methods of unloading: core pipe and spreader <br />bar, slings, or stinger bar. To unload the rolls from the flat -bed <br />using a core pipe and spreader bar, first insert the core pipe <br />through the core tube. Secure the lifting chains or straps to each <br />end of the core pipe and to the spreader bar mounted on the <br />lifting equipment. Hoist the roll straight up and make sure its <br />weight is evenly distributed so that it does not tilt or sway when <br />lifted. <br />3.5 <br />All CETCO GCLs are delivered with two 2'x 12' (50 mm x 3.65 <br />mm) Type V polyester endless slings on each roll. Before lifting, <br />check the position of the slings. Each sling should be tied off in <br />the choke position, approximately one third (1/3) from the end of <br />the roll. Hoist the roll straight up so that it does not tilt or sway <br />when lifted. <br />3.6 <br />In some cases, GCL rolls will be stacked in three pyramids on <br />flatbed trucks. if slings are not used, rolls will require unloading <br />with a stinger bar and extendible boom fork lift. Spreader bars <br />will not work in this situation because of the limited access <br />between the stacks of GCL. Three types of stingers are available <br />from CETCO, a hook mount, fork mount and pin mount (Figures <br />2 -4). To unload, guide the stinger through the core tube before <br />lifting the GCL roll and removing the truck. <br />3.7 <br />An extendable boom fork lift with a stinger bar is required for <br />unloading vans. Rolls in the nose and center of the van should <br />first be carefully pulled toward the door using the slings provided <br />on the rolls. <br />3.8 <br />Rolls should be stored at the job site away from high - traffic <br />areas but sufficiently close to the active work area to minimize <br />handling. The designated storage area should be flat, dry, <br />and stable. Moisture protection of the GCL is provided by its <br />packaging; however, based on expected weather conditions, an <br />additional tarpaulin or plastic sheet may be required for added <br />protection during prolonged outdoor storage. <br />3.9 <br />Rolls should be stacked in a manner that prevents them from <br />sliding or rolling. This can be accomplished by chocking the <br />bottom layer of rolls. Rolls should be stacked no higher than the <br />height at which they can be safely handled by laborers (typically <br />no higher than four layers of rolls). Rolls should never be stacked <br />on end. <br />SECTION 4 <br />SUBGRADE PREPARATION <br />4.1 <br />Subgrade surfaces consisting of granular soils or gravels are <br />not acceptable due to their large void fraction and puncture <br />potential. In applications where the GCL is the only barrier, <br />subgrade soils should have a particle -size distribution of at <br />least 80 percent finer than the #60 sieve (0.25 mm). In other <br />applications, subgrade soils should range between fines and 1 <br />inch (25 mm). In high -head applications (greater than 1 foot or <br />30.48 cm), CETCO recommends a membrane - laminated GCL <br />( BENTOMAT CLT, BENTOMAT CL, or BENTOMAT 600 CL). <br />4.2 <br />When the GCL is placed over an earthen subgrade, the subgrade <br />surface must be prepared in accordance with the project <br />specifications. The engineer's approval of the subgrade must be <br />obtained prior to installation. The finished surface should be firm <br />and unyielding, without abrupt elevation changes, voids, cracks, <br />ice, or standing water. <br />cEa <br />www.CETCO.com <br />