6101 ASSOCIATED BLVD BASE FILE 2017-06-05

f GENERAL NOTES: Guardrail/Fence Rockery construction shall be performed in accordance � Per City Standards with the Associated Rockery Contractor Guidelines. Parking Stall Rockery construction is a craft.The skill and experience Rock Size per (250 pSt} of the builder will largely dictate the success of the construction. Geotechnical Engineer and ARC Guidelines A rockery is a protective system with respect to the weathering and erosion process on an exposed soil face. `` 2' max. t Maximum rockery height H= 9 feet. GEOGRID SOIL REINFORCEMENT // 0 2' k' Miragrid 5XT or equivalent. STRUCTURAL GEOGRID INSTALLATION s0. ..:t Geogrid shall be oriented with the highest strength ' 2' Reinforced axis perpendicular to the rockery alignment. H � •'d .- Fill Geogrid Reinforcement shall be placed at the strengths, ` b, •; lengths and elevations shown on the construction design ,'0; drawings or as directed by the Engineer. f , �o,:.�a 2 LR= —p The geogrid shall be laid horizontally on compacted backfill and extend to the back of the rockery.The geogrid shall be pulled taut,and anchored prior to ti ��'•;o backfill placement on the geogrid. j Geogrid Reinforcements shall be continuous throughout their embedment lengths and placed side-by-side to provide 100%coverage at each level.Spliced connections 12'min• o ;o between shorter pieces of geogrid or gaps between adjacent pieces of geogrids are not permitted. I 1 REINFORCED BACKFILL PLACEMENT Tracked construction equipment shall not be operated directly upon the Reinforced Backfill shall be placed,spread an compacted geogrid reinforcement.A minimum fill thickness of 6 inches is required in such a manner that minimizes the development of slack prior to operation of tracked vehicles over the geogrid.Tracked vehicle in the geogrid and installation damage. turning should be kept to a minimum to prevent tracks from displacing ' Reinforced Backfill shall be placed and compacted in lifts the fill and damaging the geogrid. not to exceed 6 inches where hand compaction is used, Rubber tired equipment may pass over geogrid reinforcement at slow or 8-10 inches where heavy compaction equipment is used. speed,less than 10 mph.Sudden braking and sharp turning shall be Lift thickness shall be decreased to achieve the required avoided. density as required. At the end of each day's operation,the Contractor shall slope the last Reinforced Backfill shall be compacted to 90%of the lift of reinforced backfill away from the rockery to direct runoff away from maximum density as determined by ASTM D-1557-02. wall face.The Contractor shall not allow surface runoff from adjacent The moisture content of the backfill material prior to and areas to enter the wall construction site. during compaction shall be at or near the optimum moisture content. FIELD QUALITY CONTROL Only lightweight hand-operated equipment shall be allowed The rockery construction shall be observed by the Geotechncial within 3 feet of the back of the rockery. Engineer on a periodic or full-time basis as appropriate.Testing of the compacted backfill shall be performed by the Geotechncial Engineer. LEGEND: '• e b_0 Drainage materials to consist of clean angular 1 t qo •�,0• well-graded quarry spalls,with 4-inch maximum size,or other material approved by the geotechnical engineer. (III Undisturbed firm Native Soil. REINFORCED ROCKERY-SURCHARGE CONDITION Underwood Gartland - Wet Ponds + Drain pipe;4-inch minimum diameter,perforated V or slotted rigid plastic PVC pipe,laid with a positive Everett, Washington gradient to discharge under control,well away from the wall. Drwn. GLS Date 04/01/2015 Proj. No. 2232.02 Checked RAC Date April 2015 Plate 2