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<br />TABLE 5-1 <br /> <br />ESTIMATED COST TO PROTECT A STRUCTURE <br />WITH A SMALL WALL OR LEVEE' <br /> <br />Item <br /> <br /> Estimated Cost <br />Wall Levee <br />3 Feet 5 Feet 3 Feet 5 Feet <br />$3220. $4900. $ 800. $1600. <br />950. 950. 950.. 950. <br />300. 300. . 300. 300. <br />$4470. $6150. $2050. $2850. <br />$ 358. $493. $ 164. $228. <br />1.2 1.6 .5 .7 <br /> <br />Construct Wall or Levee <br />Provide Sump Pump <br />I nstall Sewer Gate Valve <br />Total First Cost <br />Annual Cost' <br /> <br />Annual Cost as Percentage <br />of Structure Value <br /> <br />1 Estimated for a 1600 square foot, $30,000 structure with 0r without basement. Protection assumed along backside of <br />lot-140 feet for a wall and 216 feet for a levee. Costs include 25 percent for contractor's bonds, overhead, profit, and <br />engineering. <br /> <br />2 Amortized at 7 percent for 30 years. <br /> <br />There can be other cost items associated with these measures depending upon specific site <br />requirements. These items include, <br />. Access closures for walkways and driveways. <br />. Relandscaping lot foraesthetic and/or interior drainage. <br />. Decorative stone or brick for walls and plantings for levees. <br />. Maintainence of wall or levee i~ water tight condition. <br /> <br />. Levee erosion protection. <br />. Power used for pumping. <br /> <br />. Removal and replacement of walkways, driveways or patios to accommodate a wall or <br />levee. <br /> <br />Economic Feasibility <br />A small wall or levee if constructed away from the structure will prevent damage to both <br />structure and contents. Damage is prevented up to its design height. If its level of pFOtection is <br />exceeded, immediate inundation is usually assumed and damage occurs to that level. Damage <br />reduced is measured as the difference in damage with and without the wall or levee. Detailed <br />analysis of damage reduced by providing three foot and five foot protection to one and two <br />story structures with and without basements is discussed in Appendix A. Figures 5-2 through 5-9 <br />show the results of these analyses. <br /> <br />33 <br />