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° NOTES: RETAINED BACKFILL(WALLS 1,2,3&5): DRAINAGE AGGREGATE/RETAINED BACKFILL(WALL 4): z 1. 7�HE SECTION SHOWN IS A REPRESEN7�ATIVE WALL SECTION. THE WALL HEIGHTS, �� RETAINED BACKFILL SHALL BE FREE OF DEBRIS AND ORGANIC 1. DRAINAGE AGGREGATE SHALL HAVE AT LEAST TWO (2) , � ELEVATIONS, TOE SLOPES,AND BACK SLOPES VARY ACCORDING TO THE ELEVATION MATER[AL MEE7�ING THE FOLLOW WG GRADATION(PHI=26°): FRACTURED FACES AND N07 BE RIVER ROCK OR PEA GRAVEL. � PLAN AND SITE PLAN RESPECTIVELY. SECTIONS AND DETAILS APPLY TO SAME AND SIEVE SIZE %PASSING 2. DRA[NAGE AGGREGATE SHALL CONSIST OF CLEAN 1" CRUSHED � SItitILAR CONDI710NS UNLESS SPECIFICALLY NOTED OTHERWISE. 2" 100 STONE MEETING THE FOLLOWING GRADAT[ON: p 3/4" 100-75 SIEVE SIZE %PASSING 2. UPON EXCAVATION, WHERE UNSUITABLE AND/OR EXPANSIVE SOILS ARE FOUND, ]" 100 � SUBCUT TO MIN[MUM DEPTH AS REQUIRED BY THE ONSITE GEOTECHN[CAL N0.4 20-100 o ENGINEER AND REPLACE WITH SUITABLE STRUCTURAL FILL TO ACHIEVE THE N0.200 0-60 3/4" 100-75 �- REQUIRED BEARING CAPACITY. THE STRUCTURAL F[LL SHALL BE COMPACTED IN 6" N0.4 0-]0 o LIFTS TO A MINIMUM 95%STANDARD PROCTOR DENS171'(ASTM D698). NO.50 0-5 � PLASTIC[TY[NDEX(PI)<20;L[QUID LIMIT(LL)<40 ° 3. APPROXIMATE LIMITS OF EXCAVATION VARIES WHERE SUBCUT IS REQUIRED.ACTUAL � > LIMI7�S AND SIDE SLOPES TO BE DETERMINED BY CONTRACTOR AND MATCH FIELD FREE DRAINING SAND IS ALSO ACCEPTABLE FOR THE DRAINAGE � CONDITIONS AND OSHA REGULATIONS. BOULDER DEPTH SCHEDULE(WALL 4): o WALL 4 HEIGHT(H 1): BOULDER DEP�f H(D): MATERIAL.IT MUST HAVE<S%FINES PASSING 7�HE NO.200 SIEVE. � 4. ALL WORK AND MATERIALS SHALL COMPLY WITH ALL STATE, COUNTY, AND CITY p_� Zg�� ONSITE MATERIAL[S ACCEPTABLE IF IT MEETS THIS CR[TER[A. z REGULATIONS AND CODES AS WELL AS OSHA STANDARDS. Z 32" � NOTES: T 5. THE WALLS ARE DES[GNED WITH A M►NIMUM 15° WALL BATTER USING COULOMB 3 36�� H 1 = WALL 4 EXPOSED WALL HEIGHT PLUS EMBEDMENT DEPTH � EARTH PRESSURE THEORY MEETING 7�HE FOLLOWING MINIMUM SAFETY FACTORS: 4 40" H2 = EXPOSED WALL HE[GHT � OVERTURNING 1.5 � SLIDING 1.5 5 34�� H = EXPOSED WALL HEIGHT PLUS EM[3GDMENT DEPTH � BEARING 2.0 6 48" D = MINIMUM BOULDER DEPTH � `� 6. 7�HE WALL REQUIRES A MIN[MUM 1.0'OF EMBEDMENT. e BOULDER DEPTH SCHEDUI.E(WALLS 1,2,3&5) 0 7. THE MINIMUM BOULDER DEPTH (D)IS A FUNCTION OF THE OVERALL WALL HEIGHT WALL HEIGHT(H): BOULDER DEPTH(D): o AS SHOWN IN THE BOULDER DEPTH SCHEDULE.A SMALLER BOULDER MAY BE USED ¢ AS A TOP BOULDER(D/2)FOR FINISHED GRAD[NG PURPOSES,24"MINIMUM. �-4 24" � 5 2$" 8"LOW PERMGABLE SOIL � 8. BOULDERS SHALL BE PLACED TO AVOID CONTINUOUS JOINT PLANES[N VERTICAL OR 5.50' r LATERAL DIRECTIONS. EACH BOULDER SHALL BEAR ON TWO OR MORE ROCKS 6 32 D/2� o BELOW IT,WITH GOOD FLAT-TO-FLAT CONTACT.VOIDS SHALL NOT EXCEED 4 INCHES. � SMALLER BOULDERS SHALL BE USED TO FILL ANY VOIDS GREATER THAN 4 INCHES. , • U . . ' .._ ..... m � 9. A MINIMUM 8 OUNCE GEOTEXT[LE FABRIC SHALL BE PLACED BEHIND BOULDERS � DUR►NG CONSTRUCTION TO PREVENT DRA[NAGE STONE FROM MIGRA7�[NG 12°MIN DRAINAGE ZONE � � BETWEEN BOULDERS. � (1"CRUSHED STONE) � N ]0. 4" DIAMETER CORRUGATED PERFORATED PLASTIC DRAINPIPE WRAPPED WI7�H A ` ` RETAINED SOIL = GEOTEXTILE FABRIC INSTALLED AS LOW AS POSS[BLE WITH POSITIVE DRAINAGE. � � ~ OUTLET AT ENDS OF WALL. DRAINAGE FOR WALL 5 SHALL NOT OUTLET ON TOP OF � , •' o WALL 4. 15° � •� o D/2� , s 1 L TO PREVENT PONDING OF WATER, POS[TIVE DRA[NAGE SHALL BE PROVIDED AT THE • O z TOP AND BOTTOM OF RETAINING WALL. INSPECT EXCAVATION SLOPES FOR ACTIVE . ' APPROXIMATE LIMITS � SEEPAGE AND PLACE ADDITIONAL DRAINS WHERE SEEPAGE OCCURS. �_. . ' � OF EXCAVATION U ...., . � �. ? 12. BACKFILL SOILS PLACED BEHIND THE DRAINAGE ZONE SHALL BE COMPACTED [N ` ' -- � � m MAXIMUM 8 INCH LIFTS TO A MINIMUM 95% STANDARD PROCTOR DENSITY (ASTM ' • ' BENCHCUT � D698). IF AN ALTERNATIVE COMPACTION EFFORT IS REQU[RED FOR THE � ' + z LANDSCAPING FEATURES, USE WHICHEVER IS MORE STRINGENT. CDP DID NOT -- _ . r � ANALYZE ANY COMPACTION EFFORT REQUIRED FOR ANY BUILDINGS OR � ' o LANDSCAPING FEA7�URES. DRNEWAY ' � � • , � 13. DO NOT BRING HEAVY COMPACTION OR PAVING EQUIPMENT WITHIN 3 FEET OF THE . � 8 OZ.FILTER FABRIC '�r � BACK OF THE PROPOSED RETAINING WALL. ONLY HAND-OPERATED COMPACTION �• + (SEE NOTE 9) � -� o EQUIPMENT(E.G.TAMPER,PLATE COMPACTOR,SHEEP'S FOOT ROLLER)SHALL BE USED 1�"MIN r. . � �, WITHIN 3 FEET OF THE BACK OF WALL. ' ' ' _ _ _ _ _ _ �I SEE NOTE 3 � � 0 14. AT THE END OF EACH DAY'S OPERATION, SLOPE THE LAST LIFT OF BACKF[LL TO D � DIRECT SURFACE RUNOFF AWAY FROM THE WALL.DO NOT ALLOW SURFACE RUNOFF � � � �� � FRO�t ADJACENT AREAS TO ENTER WALL CONSTRUCTION AREA. 1 I `�� '' I l 1 � �/ I 1 � i� � -� � �� 1 - -- -� - -_ .,� - �/ 1 r � SUBCUT(SEE NOTE 2) 4"DIA DRA[NPIPE(SEE NOTE 10) 0 � TIERED BOULDER WALL SECTION B-B ~ x U ane"�"ed By: �''°��° R�g'z`""°"N°: [hereby certi that thi, l ,sp ification,or report was prepared by �. N�. na�e Re��s+o., Rv LRB 5493 me or under � dirr t , en��:ion and that I am a dal Licen,ed ° CIVIL DESIGN 1 VANYO LANDSCAPE �' P y' �R�N�,MINNES�TI� Protessional n 1 �d r t e laws of the State of Minnesuta. "' 2 s�aie: e�o�e«No: 0 � 1� }t �l f l� � � I t) h: ;1 l, � 4 i/4"=i' „��,� � `� tYA9 LYNDALE AVENUE SOUTH,SV11E 200 RLOOMING'NN.MN 554EC c Vare: T FRF R F A TFT R $heet No: y/� � PHONE�(952110}53121FAXi(7631)92-19�91 WEOSITE�WWW.CDY�U�.t}]M J iV�AR��IS +�+-�+�+�� ✓��+��+✓��+��+0� �'+� I)a[e: V�/�'� � .nfx�w�x,NimoaseaN.,�swcn.w....��os��cneaor�nw�.0 6 � MICHAELR.JOIINSON,P.L. �! 3�r�wc V�-�u� �r .��.�-c��a--