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<br /> <br />SUMMARY: <br /> <br />WIL-BAR INTERNA TIONAL, INC. manufactures and markets a line of vinyl-lined <br /> <br />oval and round pools under various trade names including Seaspray and <br /> <br />Sharkline. These pools have been on the market for more than 40 years. This <br /> <br />report presents the results of an engineering structural analysis on important <br /> <br />, <br /> <br />stressed elements of these pools to determine the factor of safety of each, based <br /> <br />on conservative design standards. The factors of safety for analyzed elements <br /> <br />are presented in a summary table, together with calculated stress values and <br /> <br />material strength data furnished by material suppliers. Calculations, because of <br /> <br />their bulk, were omitted from this summary report. They are available on request <br /> <br />to WIL-BAR INTERNA TIONAL, ING. at their headquarters in Hauppauge, New <br /> <br />York. <br /> <br />DISCUSSION: <br /> <br />With the exception of the walls, the important structural elements and joint <br /> <br />hardware are the same for all pools. Walls are 54 inches high, Walls are 52 <br /> <br />inches high and walls are 48" high. Obviously, posts and struts for the round and <br /> <br />oval pools (see loose insert "Oval-Pool Instruction Sheet") will be shorter for the <br /> <br />pools of lower height. However, because they have the same section moduli and <br /> <br />material as their counterparts in the larger pools, they will produce higher factors <br /> <br />of safety. <br /> <br />It is, therefore, sufficient to calculate the factor of safety for each critical stress <br /> <br />point of the tallest and widest oval and round pools, for each of the wall <br />