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HomeMy WebLinkAboutP_Civil_Grading_Plans_170426ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ ALLURA AT TIFFANY PARK ALLURA AT TIFFANY PARKTED-40-39234/26/17 R-3923_ _ _ EarthSolutionsNWLLCEarth Solutions NWLLCGeotechnical Engineering,Construction Monitoring Sheet No.Proj. No.Drwn. ByChecked ByDateDateRevisionsand Environmental SciencesLock & Load Wall Design and NotesRESERVE AT TIFFANY PARKRenton, Washington363310/29/2014KDHKDHLK1 DESIGN NOTES Reference: Barghausen Consulting Engineers, Inc., Site Plans, Dated October 8, 2014 Associated Earth Sciences, Inc., Subsurface Exploration, Geologic Hazard, and Limited Geotechnical Engineering Report, Dated September 28, 2012 The following design assumptions were used: Internal angle of friction for reinforced soil = 32 degrees (design only - see Materials Note “F”) Unit weight of reinforced soil = 125 pcf Maximum wall height = 18.67 feet Batter of wall = 1H : 10V Surcharges (Where Applicable) = 3000 plf Footing Strip Load 250 psf Uniform Soil Load 100 psf Traffic Live Load TECHNICAL SPECIFICATIONS FOR MECHANICALLY STABILIZED LOCK & LOAD RETAINING WALLS GENERAL A. The work involves the supply and installation of soil-reinforced retaining walls. The Concrete Panels and Counterforts will consist of Lock & Load Stone. Counterfort and Geogrid are the types of soil reinforcement. The work will include, but is not limited to: A-1 excavation to the grades shown on the civil drawings A-2 supply and installation of geogrid reinforcement A-3 supply and installation of drainage fill and piping A-4 supply and installation of segmental Lock & Load Stones A-5 supply and installation of retained and reinforced soil fill B. The walls shall be installed on undisturbed Native Soils or Structural Fill as appropriate. MATERIALS A. Concrete Panels and Counterforts are locked together to form a “Stone”. The retaining walls have been designed on the basis of Lock & Load Retaining Wall “Stones”. “Stones” are to be purchased from a licensed Lock & Load manufacturer. The Lock & Load trademark on each pallet identifies Lock & Load products. B. Information on the purchase of Lock & Load products can be obtained through: Lock & Load Retaining Walls Ltd. Tel. (877) 901-9990 Website: www.lock-load.com C. Geogrid - Structural geogrid reinforcement shall consist of Synteen SF-55 or Synteen SF-80, or an alternative as approved by the Geotechncial Engineer with a minimum long-term design strength of 2,740 lbs/ft and 4,137 lbs/ft, respectively. D. Drainage Fill - Drainage Fill placed around and above the perforated drainage pipe shall consist of round or angular 3/4 inch to 1 inch “clean” rock. E. Face Gravel - 3/4 inch clean crushed rock or approved equivalent by the Geotechnical Engineer. F. Reinforced and Retained Backfill - Suitable granular material approved by the Geotechnical Engineer. Fines shall not exceed 25 percent. G. Leveling Course - The Leveling Course shall consist of angular, crushed aggregate with maximum size of 3/4 inch. The Leveling Course Fill may be single size or may be well- graded containing a maximum of 5% passing the #200 sieve. EXECUTION A. Contractor shall excavate to the lines and grades shown on the construction drawings. The Geotechnical Engineer should observe the excavation prior to the placement of the leveling material or fill soils. B. Over-excavation of deleterious soils or rock shall be replaced with material meeting the specifications described in Materials Section “F” above and compacted to 95% of ASTM D1557 (Modified Proctor) within 2% of optimum moisture content of the soil. C. The first course of concrete Lock & Load “Stones” shall be placed on the Leveling Course and the alignment and level shall be checked. D. “Stones” shall be placed with the top of the panel level and parallel to the wall face. The Counterfort Base shall be installed horizontal and perpendicular to the face of the retaining wall. E. Geogrid shall be oriented with the highest strength axis perpendicular to the wall alignment. F. Geogrid reinforcement shall be placed at the levels and to the lengths shown on the drawings beginning at the back of the Lock & Load Panels. G. The geogrid shall be laid horizontally in the direction perpendicular to the face of the retaining wall. The geogrid shall be pulled taut, free of wrinkles, and anchored prior to backfill placement on the geogrid. H. The geogrid reinforcement shall be continuous throughout respective embedment lengths. Spliced connection between shorter pieces of geogrid is not permitted. I. The drainage pipe discharge points shall be connected to approved discharge. J. Reinforced and Retained Backfill shall be placed, spread, and compacted in such a manner that minimizes the development of slack in the geogrid. K. Reinforced and Retained Backfill shall be placed and compacted in lifts not to exceed 8 inches where hand-compaction equipment is used and not more than 12 inches where heavy compaction equipment is used. Compaction should occur over the tail of the Counterfort prior to areas away from the retaining wall. Hand-operated vibratory plate compaction equipment (700 lbs. to 1,000 lbs.) shall be used to compact face gravel at wall face. L. Reinforced and Retained Backfill shall be compacted to 95% of the maximum density as determined by ASTM D1557 (Modified Proctor) or equivalent. The moisture content of the backfill material prior to and during compaction shall be uniformly distributed throughout each layer and shall be within 2 percentage points of the optimum moisture content. M. Hand-operated compaction equipment (700 lbs. to 1,000 lbs.) shall be used within 26 inches of the front face of the concrete facing. N. Tracked construction equipment shall not be operated directly upon the geogrid reinforcement. A minimum fill thickness of 6 inches is required prior to operation of tracked vehicles over the geogrid. O. Rubber tired equipment may pass over the geogrid reinforcement at speeds less than 10 mph. Sudden braking and sharp turning shall be avoided. P. At the end of each day of operation, the contractor shall slope the last lift of reinforced backfill away from the wall units to direct runoff away from the wall face. The contractor shall not allow surface runoff from adjacent areas to enter the wall construction site. NOTES 1. Wall alignment and heights to be established by contractor / surveyor. 2. Geotechnical Engineer to confirm Keyway stability,support characteristics, and overall global stability prior to construction. 3. Fences will be installed on top of all walls. Such fencing may include temporary safety fencing (chain link or equal) until permanent fences are installed. Permanent fences shall be no greater than six feet in height above the top of the wall and may be either solid wood, vinyl-clad chain link, or such other type as determined by the owner. GEOGRID SCHEDULE Wall* Height (feet) Layers 12345678910 4.00 5.33 6.67 8.00 9.33 10.67 12.00 13.33 14.67 16.00 17.33 18.67 A--------- AA-------- AA-------- AAA------- AAA------- AAAA------ BAAA------ BAAAA----- BAAAA----- BBAAAA---- BBAAAA---- BBAAAAA- - - GEOGRID:A = Synteen SF-55 B = Synteen SF-80 Geogrid Length (feet) 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 #of Panels 3 4 5 6 7 8 9 10 11 12 13 14 22" 16" 32" Outline of Connecting Loop FRONT VIEW 6.75" TOP VIEW Connecting Loop 6.75" 4.5" 1.6" 16" 1.25" 3.75" SIDE VIEW Poly Fiber Reinforced 1 1/2" fiber (4 lbs./yard) 6,000 psi concrete Casting Tolerance NOTES: 1. Installation to be completed in accordance with manufacturer’s specifications. 2. Do not scale from drawings. LOCK&LOADPANEL NOT - TO - SCALE LLOOCCKK++LLOOAA DD LLOOCCKK++LLOOAADD TOP VIEW SIDE VIEWFRONT FRONTBACKBACKNOTES: 1. Installation to be completed in accordance with manufacturer’s specifications. 2. Do not scale from drawings. LOCK&LOADCOUNTERFORT NOT - TO - SCALE REINFORCEMENT BAR BENDING DETAIL PICTORIAL VIEW 6" 27" 3" 7.65" 4" 27" 6.75" 20.4" 90 80 90 1.6" 4.4" Finish Grade at Wall Face 16" (Min.) Wall Height H = 18.67' (Max.) TYPICAL WALL SECTION NOT - TO - SCALE 2.67' (typ.) 4" Perforated Drainpipe Surround with 1 cf of Washed Rock per lineal foot of Pipe Reinforced Soil Retained Soils Retained Soils 4" - 6" Crushed Rock Leveling Course Geogrid Reinforcement (See Geogrid Schedule) 18" of Well-Compacted 3/4" Clean Crushed Rock Geogrid Layer 1 Geogrid Layer 2 Geogrid Layer 3 Geogrid Layer 4 (etc.) 6' - 0" (Max.) Fence (By Others) 2 1 24" (Min.)* NOTE: Wall Toe cover shall be 24" (Min.) for 2H:1V Sloping Condition in Front of Wall * NOTE: Geotechnical Engineer shall evaluate the need for Supplementary Drainage behind the Reinforcement Zone during Construction. 5' (Min.) Footing Setback Drainage Blanket (As Necessary per Geotechnical Engineer) 1 10 Reinforced Soil Mirafi 140N Filter Fabric (If Necessary per Geotechnical Engineer) Traffic Surcharge (Where Applicable) Uniform Soil Surcharge (Where Applicable) 2H:1V (Max.) Slope Behind Wall 2 15' (Min.) Footing Setback Traffic Surcharge (Where Applicable) Uniform Soil Surcharge (Where Applicable) 2H:1V (Max.) Slope Behind Wall Finish Grade at Wall Face 16" (Min.) Wall Height H=6' (Max.) GRAVITY WALL CONDITION H = 6' (MAX.) NOT - TO - SCALE 4" Perforated Drainpipe Surround with 1 cf of Washed Rock per lineal foot of Pipe Retained Soils 4" Crushed Rock Leveling Course 18" of Well-Compacted 3/4" Clean Crushed Rock 6' - 0" Max. Fence (By Others) NOTE: Geotechnical Engineer shall evaluate the need for Supplementary Drainage behind the Reinforcement Zone during Construction. Drainage Blanket (As Necessary per Geotechnical Engineer) Structural Fill or Competent Cut 1 10 R-3923_ _ _TED-40-3923 OSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSCORYLUS CORNUTAWESTERN HAZELNUTCORNUS STOLONIFERARED TWIG DOGWOODVINE MAPLE, 2 STEMS MINIMUMDOUGLAS FIR, UNCLIPPEDOCEAN SPRAYACER CIRCINATUMPSEUDOTSUGA MENZIESIISHRUBSHOLODISCUS DISCOLORNUTKA ROSEROSA NUTKANAPLANT SCHEDULEWESTERN RED CEDARTHUJA PLICATATREESSNOWBERRYSYMPHORICARPOS ALBUSMIN. SIZE4'5-6'4-5'24-36''24-36''24-36''24-36''18-24''5469872050116824THE PROJECT ECOLOGIST WILL OBSERVE SITE PREPARATION, GRADING AND PLANTING PHASES. CONSTRUCTION OVERSIGHT WILL BEPROVIDED FOR THE REMOVAL OF INVASIVES, NON-NATIVE PLANTS AND THE PROTECTION OF EXISTING VEGETATION TO REMAIN.EXISTING TREE ON SITE TO REMAIN.SPACINGCOMMON NAMEBOTANICAL NAMEQUANTITYSALMONBERRYRUBUS SPECTABLIS18-24''1255'6'6'5'4'5'O.C.O.C.O.C.O.C.O.C.O.C.MINIMUM SIZE CONTAINER FOR SHRUBS IS 1 GAL, FOR TREES MINIMUM CONTAINER SIZE IS 2 GAL.PLANTINGS ARE NOT TO BE EXCESSIVELY ROOT BOUNDNOTES:AS SHOWNAS SHOWNAS SHOWNNEIL BUCHANAN206-522-2334GHA LANDSCAPE ARCHITECTSPLANTING DESIGN BY:WETLAND/FOREST ECOLOGIST206-772-6514GARY SCHULZOREGON GRAPEMAHONIA AQUIFOLIUM24-36''1216'O.C.TREE PROTECTION FENCE, SEE LANDSCAPE PLANS#..74##66+((#0;2#4-(+.'%1&'This MITIGATION PLAN isdiagrammatic, all dimensions areapproximate and must be field verified.1'' = 20'-0''1 OSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSOSCORYLUS CORNUTAWESTERN HAZELNUTCORNUS STOLONIFERARED TWIG DOGWOODVINE MAPLE, 2 STEMS MINIMUMDOUGLAS FIR, UNCLIPPEDOCEAN SPRAYACER CIRCINATUMPSEUDOTSUGA MENZIESIISHRUBSHOLODISCUS DISCOLORNUTKA ROSEROSA NUTKANAPLANT SCHEDULEWESTERN RED CEDARTHUJA PLICATATREESSNOWBERRYSYMPHORICARPOS ALBUSMIN. SIZE4'5-6'4-5'24-36''24-36''24-36''24-36''18-24''5469872050116824THE PROJECT ECOLOGIST WILL OBSERVE SITE PREPARATION, GRADING AND PLANTING PHASES. CONSTRUCTION OVERSIGHT WILL BEPROVIDED FOR THE REMOVAL OF INVASIVES, NON-NATIVE PLANTS AND THE PROTECTION OF EXISTING VEGETATION TO REMAIN.EXISTING TREE ON SITE TO REMAIN.SPACINGCOMMON NAMEBOTANICAL NAMEQUANTITYSALMONBERRYRUBUS SPECTABLIS18-24''1255'6'6'5'4'5'O.C.O.C.O.C.O.C.O.C.O.C.MINIMUM SIZE CONTAINER FOR SHRUBS IS 1 GAL, FOR TREES MINIMUM CONTAINER SIZE IS 2 GAL.PLANTINGS ARE NOT TO BE EXCESSIVELY ROOT BOUNDNOTES:AS SHOWNAS SHOWNAS SHOWNNEIL BUCHANAN206-522-2334GHA LANDSCAPE ARCHITECTSPLANTING DESIGN BY:WETLAND/FOREST ECOLOGIST206-772-6514GARY SCHULZOREGON GRAPEMAHONIA AQUIFOLIUM24-36''1216'O.C.TREE PROTECTION FENCE, SEE LANDSCAPE PLANS#..74##66+((#0;2#4-(+.'%1&'This MITIGATION PLAN isdiagrammatic, all dimensions areapproximate and must be field verified.1'' = 20'-0''1'' = 20'-0''11'' = 20'-0''2 OSCORYLUS CORNUTAWESTERN HAZELNUTCORNUS STOLONIFERARED TWIG DOGWOODVINE MAPLE, 2 STEMS MINIMUMDOUGLAS FIR, UNCLIPPEDOCEAN SPRAYACER CIRCINATUMPSEUDOTSUGA MENZIESIISHRUBSHOLODISCUS DISCOLORNUTKA ROSEROSA NUTKANAPLANT SCHEDULEWESTERN RED CEDARTHUJA PLICATATREESSNOWBERRYSYMPHORICARPOS ALBUSMIN. SIZE4'5-6'4-5'24-36''24-36''24-36''24-36''18-24''5469872050116824THE PROJECT ECOLOGIST WILL OBSERVE SITE PREPARATION, GRADING AND PLANTING PHASES. CONSTRUCTION OVERSIGHT WILL BEPROVIDED FOR THE REMOVAL OF INVASIVES, NON-NATIVE PLANTS AND THE PROTECTION OF EXISTING VEGETATION TO REMAIN.EXISTING TREE ON SITE TO REMAIN.SPACINGCOMMON NAMEBOTANICAL NAMEQUANTITYSALMONBERRYRUBUS SPECTABLIS18-24''1255'6'6'5'4'5'O.C.O.C.O.C.O.C.O.C.O.C.MINIMUM SIZE CONTAINER FOR SHRUBS IS 1 GAL, FOR TREES MINIMUM CONTAINER SIZE IS 2 GAL.PLANTINGS ARE NOT TO BE EXCESSIVELY ROOT BOUNDNOTES:AS SHOWNAS SHOWNAS SHOWNNEIL BUCHANAN206-522-2334GHA LANDSCAPE ARCHITECTSPLANTING DESIGN BY:WETLAND/FOREST ECOLOGIST206-772-6514GARY SCHULZOREGON GRAPEMAHONIA AQUIFOLIUM24-36''1216'O.C.TREE PROTECTION FENCE, SEE LANDSCAPE PLANS#..74##66+((#0;2#4-(+.'%1&'This MITIGATION PLAN isdiagrammatic, all dimensions areapproximate and must be field verified.1'' = 20'-0''1 #..74##66+((#0;2#4-(+.'%1&'This MITIGATION PLAN isdiagrammatic, all dimensions areapproximate and must be field verified.FOLD BACK OR REMOVE TOP 1/3 OR BURPLAP IF B&B PLANTSHRUB PLANTING DETAILTHAN ROOTBALL FOR SHRUBS AND 8''WIDER THAN ROOTBALL FOR GROUNDCOVERSDEPTH TO BE SAME AS ROOTBALL OR 12''SECTIONTO BE 12'' WIDER WHICH EVER IS GREATERPLANTING HOLESET AT 1/2'' HIGHER THAN GROWN IN NURSERYFIRM BACKFILL IN PLACE AND WATER IN WELLN.T.S.EXISTING SOIL, DEEPLY SCARIFY AT SIDES OFKEEP MULCH 1-2'' AWAY FROM STEMBARK MULCH PER SPECIFICATIONSBACKFILL WITH AMENDED NATIVE SOILAND FERTILIZER PER SPECIFICATIONSPLANT POCKETOF PLANTTOP OF ROOT CROWNFORM 2'' WATER BASIN(SEE NOTES REGARDING STAKING OF TREES)3 TIMES ROOTBALL DIAMETERPLANTING HOLE1'' WIDE SOFT RUBBER CHAIN LOCK TREE TIEWRAP AROUND EACH STAKE AND TREEPEEL BURLAP BACK FROM TOP 1/3 OF ROOTBALLSET AT 1/2'' HIGHER THAN GRADE AS GROWN IN NURSERYFIRM BACKFILL IN PLACE AND WATER IN WELLFORM 2'' WATERING BASIN AROUND TREESTAKE OUTSIDE OF ROOTBALLBACKFILL PER PLANT NOTESTREE PLANTING/STAKING DETAILEXISTING SOIL2'' DIA. STAKESLAYER OF MULCHSECTION4'-0"N.T.S.