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NOTES: DRAINAGE STONE SPECIFICATION: DRAINAGE STONE SHALL CONSIST OF CLEAN 1" CRUSHED 1. THE SECTTON SHOWN REPRESENTS TYPICAL CONSTRUCTTON FOR THE THE OHRT STONE(PHI 40°)MEETING THE FOLLOWING GRADAT[ON: RESIDENCE AT 475 OXFORD ROAD, ORONO, MINNESOTA BOULDER RETAINING WALLS. � THE WALL HEIGHTS, ELEVATIONS, BACK SLOPES AND TOE SLOPES VARY AS SHOWN ON SIEVE SIZE: %PASSING THE SITE PLAN AND ELEVATTONS PLANS RESPECTIVELY. BOULDER STACKING DETAIL 1" 100 3/4" 100-75 ► 2. UPON EXCAVATION, WHERE UNSUITABLE SOILS ARE FOUND, SUBCUT TO DEP'TH AS No.4 0-10 REQUIRED BY THE ONSITE GEOTECHNICAL ENGINEER AND REPIACE WITH SUITABLE 24"D TOP BOULDER No.50 0-5 COMPACT'ED STRUCT'URAL FILL TO ACHIEVE THE REQUIRED BEARING CAPACITY. (MIN) (SEE NOTE 5) BENCHCLIT WHERE ONSITE SOILS ALLOW. THE STRUCTIJRAL FILL SHALL BE COMPAC fED 30„D FREE DRAINING SAND IS ALSO ACCEPTABLE FOR THE TO A MINIMUM 95%STANDARD PROCTOR DENSITY. DRAINAGE MATERIAL. IT MUST HAVE<10%FINES PASSING THE H g6' 30"D NO.200 SIEVE. 3. APPROXIMATE LIMITS OF EXCAVATION VARIES WHERE SUBCUT 1S REQUIRED. ACTIJAL DEPTH(D)TO HEIGHT(H) RETAINED BACKFILL SPECIFICATION: LIMITS AND SIDE SLOPES TO BE DETERMINED BY CONTRACTOR AND MATCH FIELD 30"D CONDITTONS AND OSHA REGUTATIONS. WHEN H=6'-BOULDERS SHALL BE A MINIMUM 30"DEEP(AS PER RETAINED BACKFILL SHALL BE FREE OF DEBRIS OR ORGANIC 4. THE MINIMUM BOULDER DEPTH(D)IS A FUNCTTON OF THE OVERALL WALL HEIGHT AS 30"D BOULDER DEP'TH SCHEDULE). MATERIAL MEETING THE FOLLOWING GRADATION - ON SITE SHOWN IN THE BOULDER DEPTH SCHEDULE. SILTY SAND(PHl 28°): 5. A SMALLER BOULDER MAY BE USED AS A TOP BOULDER (D/2) FOR FINISHED GRADING SIEVE SIZE: %PASSING PURPOSES. 1" 100 3/4" 100-75 6. COMPACT ALL SOILS PIACED BEHIND THE DRAINAGE ZONE TO 95% STANDARD No.4 20-100 PROCfOR DENSITY. No.200 0-60 PLAST'ICITY INDEX(PI)QO AND LIQUID LIMITS(LL)<40 7. THE WALLS REQUIRE A MINIMUM EMBEDMENT DEPTH OF 8 INCHES. 6.00' 11.00' 6.00' 8. DO NOT BRING HEAVY COMPACTTON OR PAVING EQUIPMENT WITHIN 3.3'OF THE BACK OF THE PROPOSED RETAINING WALLS. 8"LOW PERMEABLE SOIL PAVER PATTO �s' 9. THE BOULDER WALLS ARE DESIGNED AS GRAVITY WALLS REQUIRING NO SOIL NOTES: ' • REINFORCEMENT: WALL 3(W3) , . " MINIMUM SAFETY FACTOR FOR OVERTURNING 1.5 H1=EXPOSED I�VALL HEIGHT x , MINIMUM SAFETY FACTOR FOR SLIDING 1.5 + 8"LOW PERMEABLE SOIL M � .. a `:�,:�1 RETAINED SO1L H a EXPOSED WALL HEIGHT EMBEDMENT MINIMUM SAFETY FACTOR FOR BEARING 2.0 ,3 15�(I'YP� . / 1 10. PLACE A 4" DIAMETER PERFORATED DRAINPIPE WRAPPED WT[H GEOTEXTTLE FABRIC a• - INSTALLED AS LOW AS POSSIBLE WITH POSITIVE DRAINAGE. OLJTLET TO SITE DRAINAGE WALL 2(W2) ' SYSTEM. � 12"MIN DRAINAGE ZONE ' . RETAINED SOIL 11. ONSITE SOIL PARAMETERS MUST BE VERIFIED PRIOR TO CONSTRUCT'ION. IF SITE SOILS x �, (1"CRUSHED STONE) : , • DO NOT MEET THE DESIGN PARAMETERS SHOWN ON SHEET 1, CONTACT CDP � ''3 � � ° �' 8 OZ.FILTER FABRIC(TYP) ONSITE SOIL IMMEDIATELY AND A REDESIGN WILL BE REQUIRED. x x D�2 7 MIN ' • �1 � N �, a� a � ' 1 � < + + WALL 1(Wl) APPROXIMATE '� ', APPROXIMATE LIMIT'S EXISTING GRADE � GRANITE BOULDER � OF EXCAVATTON POOt DECK FINISHED GRADE . 4' � ° CRUSHED STONE BOULDER DEPTH SCHEDULE: � � �' � BENCH CUT ONSITE SOIL (NO TOE SLOPE)(NO BACK SLOPE) � � 9• ` ° ' WALL HEIGHT(H): MINIMUM BOULDER DEPTH(D): — — ��SEE NOTE 3 � 8"MIN \ 6' 30^ I ` /� D � � 4"DIA DRAINPIPE(SEE NOTE 10) ll `�\ / 1 1 \ / 1 � \ / 7' 33" � � —1 — ._ � _ 1— �/ 1 8' 36" �� 39" SUBCUT(SEE NOTE 2) TIERED WALL SECTION A-A 10' 42" (WALL 1 SECT'ION SHOWN AT IS') (WALL 2 SECTION SHOWN AT 15') (WALL 3 SECT'ION SHOWN AT 10.5') COPYRIGHT(c)2011-?Ol4 BY CIVIL DESIGN PROFESSIONALS Dni��ed B�: Projecr. Reri.o-aeo��Na [heteby certi� tliaC tliis n,sp CitiCatiun,ot teport was prepare�by No. Daa R�;�+«, �' SRS OHRT RESIDENCE PE11012251 me or unde my 'r upe sion and that I am a duly Licensed � �1�'�L DESIGN 1 ORONO,MINNESOTA Profea�iuna n ' d e lae�s of the State uf Minnesota. Z Scale: Projnr No: PROFESSIONALS 4 �"-5' T.�� 14A311 � H6MLYNDALEAVENUE90ViH.SU17Erirt�BLOOWNG71DN.1W5S1)P Date: S6eerNo: Dare: �/N/f(/M� PHONE�19521x15312�FA74(76)��t19B91�.y7'IE�WR'W.CDP118-CON 5 MAY 23,zoia TYPICAL WALL SECTION 3 ms ernvm�+mw.rmar,.�a wc.v...e.rnn�xa,vio.mnxua ( Mic iae R.Jo mson P.E.