Laserfiche WebLink
<br />63. A second seal strip was found and tested (Figure 52). Again, there <br /> <br /> <br />were leaks at the corners, and even though the system allowed very little <br /> <br /> <br />leakage, all four tests leaked. The leakage could have been handled by a <br /> <br /> <br />pumping system. Dye (a very effective indicator) was used (Figure 53) to <br /> <br /> <br />determine where the leaks occurred, and it was determined that the corners <br /> <br /> <br />were the weak part of the system. It appears that a better way to manage the <br /> <br />corners of the system would be through fabrication of a one-piece molded <br /> <br /> <br />corner strip. <br /> <br />Test Results <br /> <br />64. The snap-type flood-resistant system can be effective in keeping <br /> <br /> <br />floodwaters from entering a house or building if great care is taken in its <br /> <br /> <br />installation. To ensure a watertight system, a back-up drainage system with a <br /> <br /> <br />sump and a pump should be used to collect any water which may get behind the <br /> <br /> <br />vinyl sheeting. The two seal strips tested are shown in Figures 49 and 52. <br /> <br /> <br />Leaks can develop in the snap-type waterproofing system if irregularities <br /> <br /> <br />on the snap hold it open, if the plastic is wrinkled under the snap, or if the <br /> <br /> <br />corners are not handled with care. Many minor details, depending on the <br /> <br /> <br />particular situation, must be cared for adequately or leaks can develop. <br /> <br />20 <br />