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,, <br /> AGENERAL NOTES: i <br /> Guardrail I Fence <br /> Rockery construction shall be performed in accordance I Per City Standards <br /> with the Associated Rockery Contractor Guidelines. <br /> Parking Stall <br /> Rockery construction is a craft.The skill and experience Rock Size per (250.pst) <br /> of the builder will largely dictate the success of the Geotechnical Engineer <br /> construction. g <br /> V <br /> and ARC Guidelines4__ V. V <br /> A rockery is a protective system with respect to the , <br /> weathering and erosion process on an exposed soil face. i o , 2' max. <br /> Maximum rockery height Fl= 9 feet <br /> . '' .o ".. .... .. ... <br /> GEOGRID SOIL REINFORCEMENT •e. • <br /> I - '!po >2 <br /> Miragrid 5XT or equivalent. <br /> • -. ..,-- ,, !r1..i. .. ..i;01......,..-...r <br /> ,..:....i <br /> STRUCTURAL GEOGRID INSTALLATION• <br /> 6 <br /> Geogrid shall be oriented with the highest strength '. 2' Reinforced <br /> axis perpendicular to the rockery alignment H' -'•� .-0 Fill <br /> Geogrid Reinforcement shall be placed at the strengths, ' a •0 . -.. <br /> lengths and elevations shown on the construction design " `'0 °•.. 2' <br /> drawings or as directed by the Engineer. - ? .s.r, .; <br /> _,. ..,,• _ LR— <br /> The geogrid shall be laid horizontally on compacted .y. --0, <br /> backfill and extend to the back of the rockery.The - •"'•:'.; <br /> off`- �`° , <br /> geogrid shall be pulled taut,and anchored prior to ,e 2' <br /> backfill placement on the geogrid, K _ fl.•;:..,• <br /> Geogrid Reinforcements shall be continuous throughout 1 0 �'°- <br /> their embedment lengths and placed side-by-side to - _.. I••�" <br /> provide 100%coverage at each level.Spliced connections 12"min: 0 a <br /> between shorter pieces of geogrid or gaps betweenJ <br /> adjacent pieces of geogrids are not permitted. r:; I•�('—I I • <br /> I I <br /> REINFORCED BACKFILL PLACEMENT <br /> Tracked construction equipment shall not be operated directly upon the <br /> Reinforced Backfill shall be placed,spread an compacted geogrid reinforcement.A minimum fill thickness of 6 inches is required <br /> in such a manner that minimizes the development of slack prior to operation of tracked vehicles over the geogrid.Tracked vehicle <br /> in the geogrid and installation damage. turning should be kept to a minimum to prevent tracks from displacing <br /> the fill and damaging the geogrid. <br /> Reinforced Backfill shall be placed and compacted in lifts <br /> not to exceed 6 inches where hand compaction is used, Rubber tired equipment may pass over geogrid reinforcement at slow <br /> or 8-10 inches where Heavy compaction equipment is used. speed,less than 10 mph.Sudden braking and sharp turning shall be <br /> Lift thickness shall be decreased to achieve the required avoided. <br /> density as required. <br /> At the end of each day's operation,the Contractor shall slope the last <br /> Reinforced Backfill shall be compacted to 90%of the lift of reinforced backfill away from the rockery to direct runoff away from <br /> maximum density as determined by ASTM D-1557-02. wall face.The Contractor shall not allow surface runoff from adjacent <br /> The moisture content of the backfill material prior to and areas to enter the wall construction site, <br /> during compaction shall be at or near the optimum <br /> moisture content. FIELD QUALITY CONTROL <br /> Only lightweight hand-operated equipment shall be allowed The rockery construction shall be observed by the Geotechncial <br /> within 3 feet of the back of the rockery. Engineer on a periodic or full-time basis as appropriate.Testing of the <br /> compacted backfill shall be performed by the Geotechncial Engineer. <br /> LEGEND: ��. � --- <br /> Earth I i% lll.r� � � Lr sc <br /> Q•.4 , a Drainage materials to consist of clean angular <br /> solutions. <br /> o Q well-graded quarry spalls,with 44nch maximum NW rut irk ring Consrnin.cton Moritaonh f, <br /> _6. cztirrr&ne41 Sclar"ers <br /> size,or other material approved by the geotechnical <br /> engi — <br /> neer. _ - _-__-..-_-_:__... - - ------- <br /> E fl.- Undisturbed firm Native Soil. REINFORCED ROCKERY-SURCHARGE CONDITION <br /> III - Underwood Gartland -Wet Ponds <br /> oDrain pipe;4-inch minimum diameter,perforated -- - - Everett, Washington <br /> or slotted rigid plastic PVC pipe,laid with a positive ` <br /> gradient to discharge under control,well away from _ - <br /> the wall. .Dlwn. GLS Date 04/01/2015 Proj. No. 2232.02 <br /> Checked RAC Date April 2015 Plate 2 <br /> Yr3V2.„ji <br /> f <br />