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� <br />� <br />� <br />� <br />� <br />M <br />� <br />�_ <br />�_ <br />� <br />M <br />M <br />SLOPE OUTSID5E G11�DE <br />F011 �OMIN�GETIIUCTUIIE <br />� <br />►AVEME�IT p� ' <br />10 �N CM S M�M• <br />OF 7AMPED TO�lOIL <br />OR IMPERYIOUS SOIL <br />MATERIALS <br />CApiLLARY lREAK � <br />16' MIN.OF PEA GRAVEL I <br />y�ppp lARRIER � <br />I�.q, PLASTIC SMEETIN61 <br />�/ i /�/ '• _• --'- • •�-•••'.• <br />/ a•�;:, �:'� t�• �' SLOPED TO DP <br />/ / / / .. e .' > . <br />i / ' ' ; • ' �• ' <br />,�.:�. • . : � . ..;. <br />...��..�'•�.•.. •', - ••���•'y' DRAINAGE <br />�"�e•.�';�•� '•'• - `::''�'•. SAND� GRAVEL <br />�,�.�..�.•'� : e...: ' ":�:. <br />.•• •� � �' SPIIEAD 011 .,' <br />..•� �^.� ONTINUOUS ��:•:} WEEP MOLES <br />♦.•. •t•:. FOOTIN6 . <br />SUBDRALN PIPE <br />4"�vIinimum Dia. Perforated Or Slotted <br />Concrete, Metal, Asbestos-Cement Or <br />Plastic Pipe. Tight Jointed� Sloped To <br />Drain(4"/100' min, s1oQe), With <br />Clean-Outs. <br />Slotted Pipe-- 1; 8" Mauc. Width Slots <br />Perforated Pipe-- 3/16" to 3/8" Holes <br />Slots Or Perforations Preferientially <br />In Lower Half Of Pipe With Lower <br />Quarter Segment Solid For Water Flow. <br />DRAINAGE S?.ND & GRAVEL <br />To Nleet Washington State 9pecifications <br />Or The Following Gradation. <br />Sieve Size <br />1-1%2" <br />3/4" <br />1/4" <br />No. 8 <br />No, 30 <br />No. 50 <br />No. 200 <br />(by wet sieving) <br />pasain By Wei ht <br />�100 � <br />70-90 <br />30-60 <br />20-50 <br />8-30 <br />3-12 <br />0-1. 2 <br />(non-plastic) <br />VOTES <br />Drainage Sand & Gravellnside <br />Stem Wails Should Be Connected <br />Hydraulically To Subdrain Pipe. <br />Use Of 2" Dia. Weep Holes Is <br />One Applicable Method. <br />Subdrain Pipe Should Be Bedded <br />With A:Vlinimum Of 2" Of Draiaage <br />gand & Gravel Surrounding The <br />Pipe. <br />Backfill W ithin 18" Oi W ali 5hould <br />Be Compacted With Hand-Operated <br />Equipment. Heavy Equipment Should <br />Not Be IIsed For Backfill, As 5uch <br />Operation Coi:ld Increase Lateral <br />Earth Pressures And Possibiy <br />Damage The Wall. <br />g, 4ll Backfill Should Be Placed In <br />Layers Vot Esceedin� ti" Loose <br />Thickness And Densely Compacted. <br />Beneath Paved Or Sidewalk Areas, <br />Compact To At Least y5% Modified <br />Proctor Maximum Density (AST:VI: <br />D1557, Method C1. Otherwise <br />Compact To 90% Minimum, <br />SUBDRAIN & BACKFILL. SCHEME <br />SHALLOW FOOTINGS <br />� <br />