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a�!^i,_� <br /> 'JiC.v. <br /> . . _._. . . . .... __.__.. ...... . . .___. .__.. .. . . <br /> 1. The sec4on shawn represents typical construction at 3215 Graham Hill Road <br /> retaining wall. <br /> 2. The minimum boulder depth(D)is the relaUve to the overall retaining wall height as <br /> shown in the boulder depth schedule. <br /> 3. A smaller boulder may be used for the top boulder(D2)for ease in finished grade <br /> work. <br /> 4. The boulders shall be placed to avoid conanuous joint pfanes in ve�ical or lateral <br /> direction. Each boulder shall be placed on two or more rocks below it,with good <br /> flat-to flat contact. <br /> 12' <br /> {varies) 5. Compact all structural fill placed behind the drainage zone and in the retained zone <br /> within 95%of standard proctor density. <br /> 8"low permeable soii 6. The minimum wall embedment is 12"for the lower wall and 1 B"for the upper wall <br /> as shown. <br /> � Qrz � <br /> Drainage Stone Specifications: <br /> � " a, 1. The drainage stone shall consist of 1"mimus crushed stone complying with the <br /> � � following gradation requirem�nts: <br /> �� ~ • 8ozfi�ryr <br /> � fabnc p) sieve si•r_e °l_o�assin� <br /> • ' � ` • 1" 1�0 <br /> H � retained soil 3/4" 75-100 <br /> ' �s No.4 0-10 <br /> 8"low permeable soil � �` No.50 0-5 <br /> t t- <br /> p� - " , ��' � Free drainage sand is also acceptable for the drainage material. It must have less <br /> � - 4"dia currugated perforatedpv c than 10%fines passing the N0.200 sieve. <br /> draintile witfi sock. Daylight thru <br /> �p____.� face of wall at low point. <br /> � � ' a. 18"(min)embedment <br /> 15� ; e oz fifter <br /> F fabric(typ) <br /> �2"(min}free drainaing ; -� ; � Boulder Depth Schedule: <br /> H stone/sand � :�. � <br /> finished grade I - a � retained soif wall height(H) miminum boulder depth(D) <br /> � . . .• :., <br /> �-- 3 2T� <br /> � _ �4 � : 4 3d„ <br /> ' a 5 33" <br /> � <br /> � 4"dia c�rrugated perforated pvc 6 36" <br /> draintile witFi sock. Daylight tF�ru � 3g� <br /> 12"(min)embedment �� face of wall at low point. <br /> H= wall height <br /> BOULDER WALL SECTION D= minimumrequiredboulderdepth <br /> Project <br /> INFORMATION ON THIS DOCUMENT IS PROPRIETARY TO ftEA AND SHALL NOT BE COPIED, 3215 Graham Hill Road <br /> REPRODUCED, USED OR DISCLOSED WITHOUT THE CONSENT OF REA,LLC. � herety certi�y that this plan .sPecificutian, or report was preporee by REA, LL� pote <br /> me or under my dv-eci auperv�aon and that I am a duly Liceneed <br /> DESIGN INFORMATION PROVIDED IS FOR INTERNAL STABILITY ONLY. EX7ERNAL STABILITY, <br /> Professionol Engineer under the laws of the state of Minnesoto. �/�6'1'� '� <br /> INCLUDING BUT NOT LIMITED TO FOUNDATION SETTLEMENT, GLOBAL STABlLITY AND SLOPE � 4851 Four Seasons Ct <br /> STABILITY IS THE RESPONSIBILITY OF THE OWNER AND OWNER'S ENGiNEER. �--- �� ``�-c:z-- oot°:��� Ea an,MN 55122 s�oie <br /> Rohart Raee, P.E.,MN PE 19?B6 s N/A <br /> Tel:612.670.7009 <br /> email: rrace@rea-Ilc.com � <br /> Sheet <br />