1. Before laying, level off the base surface. Consolidate the ground, level the base surface, remove miscellaneous stone debris, avoid GCL being punctured by sharp objects to affect the waterproof effect, at the same time to drain the water, avoid GCL soaking in water.
2, when laying, determine the position and position. Lay GCL on the base surface in order and direction, and secure with steel nails and washers with a length of 30-40mm and spacing of about 400mm; to avoid sliding on the elevation and slope, the number of steel nails and washer can be increased. In addition to steel nails fixing at the edge of the GCL overlap, the whole GCL should also be nailed according to the flatness, so that the GCL is be installed on the wall and ground.
3. Llap at the joints. The lap width is 200- -250mm, and the joints should be free of wrinkles, dirt and other materials.
4. Special laying. If the pipeline or pile head crosses the GCL, a complete GCL is strengthened according to the pipe diameter and a circumference diameter of 300mm. After the whole roll, if the GCL is damaged or more complex joint, a complete GCL can be covered according to the size of the damaged or joints and a weekly diameter of 300mm.
5. After the laying, organize the site to avoid GCL damage. After leveling and tamping, the whole laying process is completed.
