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��y <br />C�H <br />9�tA <br />r <br />o�o <br />�V1M�+ <br />�O�H <br />��g <br />`] Y � <br />C"y� <br />HH <br />g" <br />c�C7y <br />�c�r <br />xy� <br />H O p� <br />i _r! <br />1 �� <br />� <br />� <br />CAPIILARY BREAK — <br />I6' MIN.OF PEA GRAVEL I <br />SLOPE OUTSIOE GNADE �AP�R BApp�ER <br />qWAY FROM STRUCTURE <br />FON DRAINAGE � 1e,9, p�pSTIC SHEETINGI <br />i <br />1�' ,.. ,...•.,... "�� <br />` � .. / I i / / / ; . �. . , ; . . . . . : : . . <br />. / . <br />`/�/;�/ :� � � .. ` •.. �— <br />PAVEMENT OR � �' �� •� a',' � •; � �' � • SLOPED TO UR�IN <br />10 INCHES MIN. � <br />OF TAMPED TOPSOII � � � /� � e' . �..•�.�. <br />OP IMPEflV10U5 SOII � ' % .:. . <br />"��•' DRAINAGE <br />:• a a'�'a ��a�.� SANO 8 GRAVEL <br />.': , : <br />•,a•�•�:� �e� SPREAD OR . <br />_' . �. a CONTINUOUS WEEP NOLES <br />SUB�RAIN PIPE •_�.?. C'.,.�i • FOOTING <br />ytATERLALS <br />SUBDRALN PIPE <br />�4" :�Iinimum Dia. Perforaied Or Slocted <br />Concrete, Metal, Asbestos-Cemenc Or <br />Plastic Pipe. Tight Jointed, Sloped To <br />Drain(4"/100' min, slooe), With <br />C le an-Outs. <br />Slotted Pipe-- li3" �Iax. �Vidth Slots <br />Perforated Pipe-- 3/16" to 3/8" Holes <br />Slots Or Perforations Preferientially <br />ta Lower Ha]S Of Pipe 6Vith Lower <br />Quarter Segment Soliu For Water Fiow. <br />: RAIi`IAGE S3VD & GR�VEL <br />To tiieet Washington State Specifications <br />Or The Following Gradation. <br />:ieve Size Passin� By �Veieht <br />- -�=1rz�� - - - �oo <br />3/4" 70-90 <br />1/4" 30-60 <br />�Io. 9 20-50 <br />Yo. 30 8-30 <br />vo. 50 3-12 <br />No, 200 0-1.2 <br />(by wet sieving) (non-plastic) <br />VUTES <br />i, Drainage Sand dc Gravel Inside <br />Stem Wa11s Should Se Connected <br />HydrauLcally To Su6drain Pipe. <br />Use Of 2" Dia. Weep Ho1es [s <br />One �lpplicable �Iethod. <br />2, Subdrain Pipe Should Be Bedded <br />W?th 3 �tinimum Of 2" Oi Draiaage <br />gand & Gravel Surrounding The <br />Pipe. <br />3, gackiill W ithin 18" Oi 4V all Should <br />Be Compacted �Vith Hand-Operated <br />Equipment. Heavy Equipment Should <br />vot Be Used For Backiill, As �uch <br />Operation Could Inc:ease Lateral <br />Earth P^essures And Possibiy <br />Damdge The Wall. <br />.}, �11 Backiill Should He Placed In <br />Layers Vot Esceeding ti" Loose <br />Thickness rind Densely Compacted. <br />Beneath Paved Or Sidewalk Areas, <br />Compact To P.t Least �5% �iodified <br />Proctor Maximum Density (AST1�I; <br />D1557, �Iethod C1. Otherwise <br />Compact To 90% Minimum. <br />SUBDRAIN & BACKFILL SCHEME <br />SHALLOW FOOTINGS dc STEM WALLS <br />