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, <br /> SIOiE OUTSIOE GRADE COMCIIETE SAMO� <br /> AW111 FflOM SiR11GTURE � <br /> FOR ORAIN�GE � FLOO� SL �� <br /> __ . ^'� <br /> �— . a t.l ' . . . • 1 <br /> ' ��� :�� � / � .. • ; • <br /> o � <br /> 10vINCMES MIM. /�/�j/ // R,�; V�►OR lAlIN1E11� <br /> OP TAMPED TOPSOI � /� '•r'����•�/ �, <br /> pX IMPERVIOUS SOIL � ' _ � DII�INAGE <br /> i '.'.i S�ND � GR�YEL <br /> ' ' ,�; <br /> SPREAD OR !� �WEEP NOLES <br /> SUBDR111M P�PE •-'���:', �!• CONTIMUOUS <br /> FOOTING <br /> nol lo ac�le <br /> DRAT$NIALS NOTES <br /> � 1. Drainage �and & Gtavel Beneath <br /> SUBDRAIN PIPE Fl��or Slab Shoulc Be Coonecred <br /> -1' �linimum Dia.Per`orated Or Slotted Hyuraulically To Subdrain Pipe. <br /> Concrete, Metal, :lsbestos-Cement Or Use Of 2" Dia. Weep Holes Is <br /> P!ascic Pipe. tight Jo:nted, Sloped To One appl:cable >Iechod. <br /> Drain (4�'/100' min. slope), With <br /> C:ean-Outs. 2. Subirain ?ipe Should He Bedded <br /> �lutted Pipe-- 1/8" �iax. 1Vidth Slots W.th a \7inimum Of 2" Of D:aiaage <br /> Perforated Pipe--3li6" to 3/6" Holes Sand & Gravel Su::ounding The <br /> Slots Or Periorations Preierent:ally Pipe. <br /> [n Lower Ha!f Of Pipe Wich Lower <br /> Quarter Segment SoLid For Water Flow. 3. BackiiL' �Cithin 18" O; Wa11 Shovld <br /> He Compacted With Hand-Ooera.ed <br /> UR.4INAGE SAND & GRAVEL Equipmem. Heacy Equipmer.t SY.ouid <br /> To �feet Washington State Specifications Not Be lised For Bacl;fill, As Such <br /> Or The Following Gradation. Operation Could Increas? Lateral <br /> Earth Pressures And Pos�i6h• <br /> Sieve Size Pasni� b: Wei ht Damage The Wall. <br /> — - - - g—"- - $— <br /> I-]j2' 300 <br /> 314" 70-90 4. All IIackfill Should Be Placed In <br /> 1�4" 30-60 Layers Not exceeding 6" Loose <br /> No. 8 20-50 Thickness And Denaely Compacted. <br /> Yo. 30 8-30 Be�eath paved Or Sidewalk Are�s, <br /> No. 50 3-12 Compact To At Least 95"J. Modified <br /> No.� 200 0-1.2 Proc;or blazimum Density (ASTM: <br /> (by wet sievingl (non-plastic) DI557, yethod C). Otherwise <br /> Compact To 90%. Minimum. <br /> SUBDRAIN & BACKF �� L SCHEME <br /> SHALLOW FOOTINGS WITH INTERIOR SLAB ON GRADE 5�� <br />