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?C#|. X <br />• * <br />8CHOELL & IVIAQECII^i INC.£XW. < <br />.>■ <br />DRAINAGE CALCULATIONS <br />FIEBELKORN POOL PROJECT <br />2730 SHAOYWOOO ROAD <br />Drainage Concept: <br />To mitigate the effect on storm runoff of the additional <br />absorption Mater disposal system. <br />Impervious Surface Area: <br />Pool <br />Spa <br />Adjacent Patio <br />736 square feet <br />33 <br />1040 <br />1809 square feet <br />Required Detention Storage Volume In Pool: <br />Use SCS Method, 100 year frequency, 24 hour storm <br />Detention Volume - 1809 square feet x 5.67 In, * 855 ft.12 In/ft <br />Storage Volume Available <br />Pool A Spa11 Inches freeboard (filter outlet to patio l«vel) <br />Volume - 736 square feet • 33 square ft. x 11.1^ • <br />12 In/it* <br />Assume flooding patio area (no overflow) <br />Maximum depth on patio - 2 In., avg. depth <br />Additional depth over pool <br />Volume (patio) ■ 1040 s.f. x 11^12 In/ft <br />- 1 In. <br />86 ft.p <br />Volume (pool)736 s.f. X 2 In-IZ in/ft <br />o <br />122 ft.V <br />T •'! <br />Total 883 ft. <br />Fltwl design of soil absorption water disposal system will require soil borings <br />and percolation tests to determine absorption rates. <br />f