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• <br /> 0 <br /> 0 <br /> ec .. <br /> Slope To Drain _ -1. .. <br /> O • <br /> -O <br /> O • <br /> 0 • <br /> O <br /> O° <br /> - O <br /> inch c min. - <br /> O <br /> •O <br /> 0 <br /> O0. <br /> nil <br /> 0 <br /> e <br /> 0 <br /> • <br /> a o <br /> ° <br /> •;.• :o':•• . •a.: - 18 inch min. <br /> ...•f0 .• _ f �p•f _ •fes, •. .-f o o ° <br /> 4 inch min. 'o• - • • •>e. - •• ••.• ° o_ <br /> Diameter a.•t f• :•• r o 8 •O - o r.-.�...� <br /> Perforated Pipe '°'••,�::°-��.••. •� ' ,,••- p 0 00 0 <br /> • • o o-o <br /> Wrapped in Drainage • °o O0 °0 o <br /> • :. •• . •, oeo oe 0 <br /> Fabric • • ° -o ' - <br /> • <br /> 1 <br /> 2 inch min. <br /> 2 inch min. / 4 inch max. 12 inch ____ <br /> min. <br /> SCHEMATIC ONLY - NOT TO SCALE <br /> NOT A CONSTRUCTION DRAWING <br /> LEGEND <br /> Surface seal; native soil or other low permeability material. <br /> -• • Fine aggregate for Portland Cement Concrete; Section 9-03.1(2) of the <br /> • o_ WSDOT Specifications. <br /> O Drain pipe; perforated or slotted rigid PVC pipe laid with perforations or <br /> slots facing down;tight jointed;with a positive gradient.Do not use flexible <br /> corrugated plastic pipe. Do not tie building downspout drains into footing <br /> lines. Wrap with Mirafi 140 Filter Fabric or equivalent. <br /> • <br /> • Ao, Ea\: ���1\ TYPICAL FOOTING SUBDRAIN DETAIL <br /> � Earth Consultants Inc. Costco Wholesale Gas Station Addition <br /> W/ !VI/ \t Ce°'ah"'ca'Engineers.Geologists`Ei'wro""x"cYScientists Everett, Washington <br /> Proj. No. 8556 I Drwn. GLS I Date Jan. '99 Checked KME I Date 1/15/99 I Plate 3 <br />