Laserfiche WebLink
~, <br />i <br />8.4 Vertical penetrations are prepared by notching into the subgrade as shown in Figure 13a. <br />The penetration can be completed with two separate pieces of GCL as shown in Figure 13b. <br />Alternatively, a secondary collar can be placed as in Figure 12a or 12b. <br />ISOMETRIC VIEW OF THE COMPLETED VERTICAL PENETRATION <br />__GCL Overlap <br />Granular Bentonite <br />Seam Enhancement <br />8.5 When the GCL is terminated at a structure or wall that is embedded into the subgrade on the floor <br />of the containment area, the subgrade should be notched as described in Sections 8.3 and 8.4. <br />The notch is filled with granular bentonite, and the GCL should be placed over the notch and up <br />against the structure (Figure 14). Connection to the structure can be accomplished by <br />placement of soil or stone backfill in this area. When structures or walls are at the top of a <br />slope, additional detailing may be required. Contact CETCO for specific guidance. <br />ti <br />BENTOMAT/CLAYMAX Installation Guidelines <br />13 of 15 <br />