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<br />difficult to locate; therefore, a seal strip was designed and a manufacturer <br /> <br /> <br />paid to extrude it (Figure 49). <br /> <br /> <br />57. Five tests were made with the system using the specially designed <br /> <br /> <br />seal strip. Photos of the tests are shown in Figures 50 and 51. It was found <br /> <br /> <br />that care must be taken in attaching the permanent part of the seal strip to <br /> <br /> <br />the house. If any adhesive material adheres and stays in the snap area, it <br /> <br />will hold the expedient snap open and allow water to enter behind the plastic. <br /> <br /> <br />58. It was thought that the corners (Figures 50 and 51) could be easily <br /> <br /> <br />sealed. The one small place where there was a possibility of water entry was <br /> <br /> <br />at the corner where the snap comes together. This was to be sealed by placing <br /> <br /> <br />silicone caulk under the snap and at the intersection of the plastic and snap <br /> <br /> <br />on the under side of the plastic. This solution seemed entirely logical, but <br /> <br /> <br />in practice it turned out to be extremely difficult to keep the corners from <br /> <br /> <br />leaking. <br /> <br />59. As the plastic sheet was pulled along the walls and around the <br /> <br /> <br />corners, it was difficult to keep it from wrinkling. The vertical sections <br /> <br /> <br />tended to pull crooked and wrinkle. Any wrinkles in the plastic under the <br /> <br /> <br />expedient snaps would allow water to enter to the side of the wrinkles and <br /> <br /> <br />make the system ineffective. <br /> <br /> <br />60. In general, the system can be made to work; however, careful atten- <br /> <br /> <br />tion must be paid to details or the system will leak. Because there is a pos- <br /> <br /> <br />sibility of leaks with any flood-resistant system, a sump and pump should be <br /> <br /> <br />used in case there is a leak. A drainage system can be constructed inside the <br /> <br /> <br />perimeter of the system which leads to a sump and pump. The pump can remove <br /> <br /> <br />any water which might leak through the system. The drainage system and sump <br /> <br /> <br />can also collect and remove any seepage water before it gets into and damages <br /> <br /> <br />any of the house. <br /> <br />61. After several failures, this system was finally successfully <br /> <br /> <br />tested. <br /> <br />Outside corners <br /> <br />62. A bulkhead was constructed to hold water for four tests performed <br /> <br /> <br />on the outside of the cube. The same problems were encountered in working <br /> <br /> <br />with the system as described above, although the outside corners were easier <br /> <br /> <br />to work with and the plastic was not as easily wrinkled. <br /> <br />19 <br />