Laserfiche WebLink
4.6.3. Panel Deployment - GCL materials shall be installed in general accordance <br /> with the procedures set forth in this section, subject to site specific conditions <br /> which would necessitate modifications. <br /> Reinforced GCL shall be used on both slopes as well as the flat areas to ensure <br /> the GCL withstands the rigors of the installation and subsequent low load <br /> hydration. <br /> 4.6.3.1. Deployment should proceed from the highest elevation to the lowest <br /> to facilitate drainage in the event of precipitation. <br /> 4.6.3.2. The GCL may be deployed on slopes by pulling the material from a <br /> suspended roll, or securing a roll end into an anchor trench and <br /> unrolling each panel as the handling equipment slowly moves <br /> backwards. <br /> 4.6.3.3. Deployment on flat areas shall be conducted in the same manner as <br /> that for the slopes, however, care should be taken to minimize <br /> "dragging"the GCL. Slip-sheet may be used to facilitate positioning <br /> of the liner while ensuring the GCL is not damaged from underlying <br /> sources. <br /> 4.6.3.4. Overlaps shall be a minimum of 6 inches and be free of wrinkles, <br /> folds or"fish-mouths". <br /> 4.6.3.5. The contractor shall only install as much GCL that can be covered at <br /> the end of the day. No GCL shall be left exposed overnight. The <br /> exposed edge of the GCL shall be covered by a temporary tarpaulin <br /> or other such water resistant sheeting until the next working day. <br /> 4.6.4. Anchorini;- All GCL material installed on slopes shall be anchored to prevent <br /> potential GCL panel movement. <br /> 4.6.4.1. Standard Anchor- The GCL shall be placed into and across the base <br /> of the excavated trench, stopping at the back wall of the excavation. <br /> 4.6.4.2. "Run-Out"Anchor- On gentle slopes or locations where it is difficult <br /> to create an anchor trench,the GCL may alternatively be anchored by <br /> a material run-out past the crest of the slope. The length of the run-out <br /> shall be pre-approved by the project engineer prior to the use of this <br /> method. <br /> 4.6.5. Seaming - A 6-inch lap line and a 9-inch match line shall be imprinted on both <br /> edges of the upper geotextile component of the GCL to assist in installation <br /> overlap quality control. Lines shall be printed as continuous dashes in easily <br /> observable non-toxic ink. <br /> 4.6.5.1. Overlap seams shall be a minimum of six inches on panel edges and <br /> one foot on panel ends. <br /> 4.6.5.2. Loose granular bentonite should be placed between panel overlaps at a <br /> rate of 0.25 pound per lineal foot. <br /> 4.6.6. Detailing - Detail work, defined as the sealing of the liner to pipe penetrations, <br /> foundation walls, drainage structures, spillways, and other appurtenances, shall <br /> be performed as recommended by the GCL Manufacturer. <br /> Bentofix Drop-In Specification Bentofix is a registered trademark ofNAUE GmbH&Co.KG <br /> 10 Rl/13/06 <br />