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I <br /> < <br /> I 6 <br /> cr, a. <br /> E EXTERIOR WALL <br /> a SLOPED TO DRAIN <br /> I <br /> z AWAY FROM STRUCTURE <br /> � <br /> Nx�, <br /> x =IEIII . <br /> PAVEMENT OR 24" '���/i�/ �ICI I AIL=III ��-� 4}IF WALL DRAINAGE MATERIAL <br /> itli 4 <br /> IMPERVIOUS SOIL �i�� — I I-1I1=1I l�•,•: <br /> \\ I I = —ME—6`41 <br /> o ;" 11=1 11— Pt y t <br /> N RETAINED SOIL /j III 111l11 I11 p!. 2 MIN. <br /> o IIIIII=.'41,':F= DAMP PROOFING <br /> TEMPORARY =I11=I111 {� <br /> EXCAVATION SLOPE 11=III=Pr••• yKt. VAPOR RETARDER <br /> 11 =111ig ' <br /> _ •���1•s"s7 <br /> =II ,,„- :�i ' FLOOR SLAB <br /> a di i t.orliiv <br /> m ►�=•.�::i•�: 4„ MIN. <br /> I12" MIN. COVER OF \/i��//, •\'\�//��//\�\// <br /> DRAINAGE MATERIAL — CAPILLARY BREAK <br /> (6" MIN. ON SIDES OF PIPE) 4" DIAMETER <br /> PERFORATED <br /> M DRAIN PIPE <br /> a) <br /> I6 NOT TO SCALE <br /> E <br /> 0 <br /> z <br /> 0 <br /> Materials: <br /> J <br /> A.WALL DRAINAGE MATERIAL: May consist of washed 3/8"to No.8 pea gravel.Alternatively the wall drainage <br /> material may consist of"Gravel Backfill for Drains"per WSDOT Standard Specification 9-03.12(4),surrounded with a <br /> Inon-woven geotextile such as Mirafi 140N(or approved equivalent). <br /> B. RETAINED SOIL:Should consist of structural fill,either on-site soil or imported.The backfill should be compacted in <br /> loose lifts not exceeding 6 inches.Wall backfill supporting building floor slabs should consist of imported sand and gravel <br /> I per WSDOT Standard Specification 9-03.14 or City of Seattle Type 17 compacted to at least 95 percent ASTM D1557. <br /> Backfill not supporting building floor slabs,sidewalks,or pavement should be compacted to 90 to 92 percent of the <br /> maximum dry density, per ASTM D1557. Backfill supporting sidewalks or pavement areas should be compacted to at <br /> M least 95 percent in the upper two feet. Only hand-operated equipment should be used for compaction within 5 feet of the <br /> Io walls and no heavy equipment should be allowed within 5 feet of the wall. <br /> M) <br /> o C.CAPILLARY BREAK:Should consist of at least 4 inches of clean crushed gravel with a maximum size of 1-1/2 inches <br /> I <br /> m and negligible sand or fines. - <br /> 0 • <br /> o D. PERFORATED DRAIN PIPE:Should consist of a 4-inch diameter perforated heavy-wall solid pipe(SDR-35 PVC)or <br /> 6 rigid corrugated polyethylene pipe(ADS N-12)or equivalent.Drain pipes should be placed with 0.5 percent minimum <br /> I / slopes and discharge to the storm water collection system. <br /> N <br /> O <br /> 7 Wall Drainage and Backfill <br /> o <br /> o Administration Building Office Expansion <br /> Everett, Washington <br /> I / <br /> GEOENGINEERS...0 Figure 3 <br /> w <br /> Ld <br /> I <br />