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<br />of the speed and ease of implementing and because of decreased possibilities <br /> <br /> <br />of water leaks. <br /> <br />106. An active combined effort of researchers, contractors, material <br /> <br /> <br />developers, and building owners is necessary for efficient and cost-effective <br /> <br /> <br />improvements in decreasing the flood damage to buildings. The government <br /> <br /> <br />should follow and learn from the private sector and should lead developments <br /> <br /> <br />in areas where the private sector does not have the expertise or profit <br /> <br /> <br />potential to prompt it to make such developments. <br /> <br />Recommendations <br /> <br />107. It is recommended that tests of promising cementitious coatings be <br /> <br /> <br />performed to determine their effectiveness in preventing water penetration <br /> <br /> <br />when subjected to various environmental conditions. <br /> <br /> <br />108. The snap connection for sealing an impermeable membrane at the <br /> <br /> <br />base of the building should be perfected. There are only a few details which <br /> <br /> <br />must be studied, improved, and tested to complete this system of water- <br /> <br /> <br />resistant construction. <br /> <br />109. The penetration or flow of water with time through various <br /> <br />foundation soils should be defined. The depth of impermeable barriers to <br /> <br />reduce underseepage and uplift for specific time intervals for the various <br /> <br />foundation soils should be determined. <br /> <br />110. A loose-leaf homeowner's manual should be written presenting the <br /> <br />pitfalls of flood-resistant construction, options for making buildings <br /> <br />resistant to floodwaters, and any other information which will be helpful to <br /> <br />building owners or contractors. The manual should be organized so that it can <br /> <br />be easily updated as pertinent information becomes available. <br /> <br />111. The homeowner's manual should present the following four systems <br /> <br />for making buildings resistant to floodwaters: <br /> <br />a. System I (Figure 29): <br /> <br />(1) A relatively impermeable sheeting below the building base <br />and to a sufficient depth to eliminate undesirable under- <br />seepage and uplift. <br /> <br />(2) A snap at the base of the building sealing against a <br />relatively impermeable membrane which extends up the walls <br />of the building. <br /> <br />32 <br />