|FIGURE 2.10 Application of drainage system system using termination bar directly over|
terminating edge of waterproofing membrane.
|FIGURE 2.11 Application of drainage system.|
|FIGURE 2.12 Drainage system being applied directly to founda-|
The filter fabric material is always applied facing out, and manufacturers provide additional fabric at ends to overlap all seams. The terminated ends of the material are covered with the fabric by tucking it behind the plastic core sheet. Side edges of the sheet are typically attached together by overlapping and applying an adhesive. Figure 2.13 shows a partially completed drainage system installed with appropriate drain field gravel backfill.
|FIGURE 2.13 Installation of drainage field adjacent to foundation for completion of prefabricated|
Backfilling should take place as soon as possible after installation; using the available site soil is acceptable. Backfill should be compacted as required by specifications using plate vibratory compactors. Caution should be taken during compaction not to damage the fabric material.
|FIGURE 2.14 Manufactured drainage system used for below-slab drainage.|
|FIGURE 2.15 Below-grade tunnel waterproofing using both horizontal|
and vertical drainage application.