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r , . <br /> BOULDER SCHEDULE <br /> WALL HEIGHT (H) MINIMUM 60ULDER OEPTH (D): <br /> 0-3 24" <br /> 4 2 7'• <br /> 5 30" <br /> 6 33" <br /> 7 36" <br /> DRAINAGE STONE SPECIFICATION: <br /> ORAINAGE STONE SHALL CONSIST OF CLEAN 1" MINUS <br /> CRUSHEO STONE MEETING THE FOLLOWING GRADATION <br /> � S�EVE SIZE: %PASSING <br /> 1" 100 <br /> 3/4" 75-100 <br /> N0. 4 0-10 <br /> N0. 50 0-5 <br /> • 8" LOW PERMEABLE SOIL <br /> 15' (MIN) • � • . <br /> • • . 12" (,MIN) DRAINAGE STONE <br /> BOULDERS '� • . . (3/4 CRUSHED STONE) <br /> H FINISHED GRADE AT . , ' � ' RETAINED SOIL — <br /> BOTTOM OF WALL <br /> ROADWAY . • � • g OZ. FII.TER FABRIC NOTES: <br /> � -----�---=-•=-- 1. THE SECTION SHOWN REPRESENTS TYPICAL CONSTRUCTION FOR THE <br /> --J- ' ' , � BOULDER WA�L. SEE WALL ELEVATIONS FOR TOP AN� BOTTOM <br /> • • . • . , ELEVATIONS ALONG THE WALL, AND THE FINISHED GRADE. <br /> 4" DIA CORRUGATED PERFORATED PVC 2. THE BOULDERS SHALL BE PLACED TO GRADUALLY DECREASE IN SIZE <br /> DRAINTILE WITH SOCK. OUTLET THRU WITH INCREASING HEIGHT, MAINTAINING THE MINIMUM DEPTH REQUIRED <br /> WALL � 30' O.C. (D) FOR THE OVERALL WALL HEIGHT (H) <br /> 18" (MIN) 3. THE BOULDERS SHALL BE PLACED TO AVOID CONTINUOUS JOINT PLANES <br /> IN VERTICAL OR LATERA� DIRECTIONS. EACH 60ULDER SHALL BEAR ON <br /> TWO OR MORE ROCKS BELOW IT, WITH GOOD FLAT—TO—FLAT CONTACT. <br /> 4. PLACE A 4" DIA CORRUGATED PERFORATED PVC DRAINTILE W/SOCK AT <br /> TYPICAL WALL SECTION THE FINISHEO GRADE OF WALL AS SHOWN. OUTLET AT ENDS OF WALL. <br /> 5. MAINTAIN A MINIMUM 12" DEEP DRAINAGE ZONE AT THE BACK OF WALL <br /> AS SHOWN. BEGIN THE DRAINAGE ZONE AT FINISHED GRADE TO AVOID <br /> SATURATING THE BASE OF WALL. <br /> 6 COMPACT ANY STRUCTURAL FILL PLACED BEHIND THE DRAINAGE ZONE <br /> TO 95� STANDARD PROCTOR. <br /> 7. THE BOULDER WALLS ARE DESIGNED AS GRAVITY WALLS: <br /> MINIMUM SAFETY FACTOR FOR OVERTURNING --------- 1.5 <br /> MINIMUM SAFETY FACTOR FOR SLIDING ------------- 1.5 <br /> COPYRIGHT c) 2002 BY MRJ ENGINEER�NG, INC. � <br /> Designed By: Project: <br /> nK OESCN 5 U1rtED i01NE iN1ERNY,u�0 pcf(R1aiL SVi&Utt�[TME SEGYEMGIL wN1 No. Date Rev�s�on gy A' I hereby certify that this an specificotion, or report was <br /> SiRUCTURE OxLt. 0.0B�1 Sf�BIUIY 5 TME RE5PoNSIB�Utt Oi 1ME OMxER. TME OESC� MRJ J E N G I N E E R I N G� I 1`I�. prepared by me o u der y direct supervision and that I am <br /> IS BASEO d1111E ASSUYPIqN TM!TNE W1Ef11�L NIiXIM,�e�r,�,m�s.ycr�aos GRAY RESIDENCE a duly Lice sed of s�o al Eng�neer under the �ows of tne <br /> s�o,�: 8200 HUMBOLDT AVENUE SOUTH, SUITE 217 ORONO, MN state ot M nes . <br /> ���R���..�o�,TM o��h��«��To�E��. �. BLOOMINGTON, MN 55431 <br /> svEcmunoxs rox n�is rxaecr. I/4' = I'-0' ra 0�'��O't <br /> mrs onan�5 ffxw vu�swm ron n.s svccsx aaactr on�v. un vum <br /> PHONE: (952) 294-4755 Title: Date: <br /> �ccevtt�c n�a ooa�ucxr oo¢so in cano[hce uro.en[es nur rc s�uu xo*e[ <br /> WVLICATED N rWIE dl M Pun,xqt 05ttO5m f0 OMERS m1HWT iH(CONSENT Oi Dote: FAX: (95P� Z94-4595 WQLL SECTI ON DETAILS Re s��at,o� No: Pro ect No: Drawin No: <br /> ���`���� 07 AUG 02 9� � 9 <br /> MRJENG INEERI NGc�SPRYNET.COM 25493 02-200 L� <br />