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<br /> GENERAL NOTES: R
<br /> Rockery construction is a craft and depends largely on the .4 Railing!Fence
<br /> skill and experience of the builder.A rockery is a protective Per City Standards
<br /> i system which helps retard the weathering and erosion
<br /> process on an exposed soil face.While by its nature(mass, I
<br /> size and shape of rocks)it will provide some degree of $y,u
<br /> retention,it is not a designed or engineered system in the A ; = p 4''
<br /> sense a reinforced concrete retainingwall would be considered 1&2 Marr Rock •'-0 •. 1
<br /> designed or engineered.The degreof retention achieved is --
<br /> 4,0,
<br /> ._. �,�. �� r •�•,o e I 1
<br /> dependent on the size of the rock used;that is,the mass or j ••• 1
<br /> weight,and the height of the wall being constructed.The 1 f ,> �°• �e
<br /> larger the rock,the more competent the rockery should be. -.. 'r ,o.• ..• .Ing_,• III
<br /> Rockeries should be considered maintenance items that will 3&4 Man Rock 6 ° = • '• ITT
<br /> require periodic inspection and repair.They should be locatedOW ' i gp..,q .�
<br /> so that they can be reached by a contractor if repairs become ' qP o • o 0.x6
<br /> necessary. p•°.
<br /> i O o
<br /> ...Maximum inclination of the slopes above and behindH _ .• ....o ;'' :.:'?:`'
<br /> rockeries should be 2:1 (Horizontal:Vertical). a • _ 9 p:
<br /> Minimum thickness of rock filter layer behind rockery is :,.f' •:b o'. ;Oo;;
<br /> .{`.1 O
<br /> 18 inches. o•';..;. .,
<br /> o.,..,.
<br /> ...Minimum of 12 inch embedment into undisturbed native p
<br /> soil or compacted fill placed in accordance with report ,: oD
<br /> recommendations. 4&5 Man Rock `L <' &.. ,", —_
<br /> ...Maximum rockery height H= 9 feet. 1111
<br /> •r '+. 'o•"
<br /> ...Rockeries greater than 8 feet in height to be installed `•0-'i,"•: •c ..--
<br /> under
<br /> g ice_..'--. : 0....,d ..�.
<br /> under periodic or full time observation of the geotechncial o
<br /> engineer. . ' a_ a 1 I I
<br /> Unless otherwise specified in writing by the rockery 12"min,
<br /> "designers",all rocks placed in the lower two-thirds of the I I I I Iif poo '`: '
<br /> wall should be 5 to 6 man rock,4,000 lbs.or larger.Rocks
<br /> placed above this level should gradually decrease in �_ p, ..d
<br /> size with increasing wall height using 3 to 5 man rock, -.
<br /> 700 to 6,000 lbs.
<br /> The long dimension of the rocks should extend back
<br /> towards the cut or fill face to provide maximum stability.,
<br /> Rocks should be placed to avoid continuous joint planes in
<br /> vertical or lateral directions.Each rock should bear on two
<br /> or more rocks below it,with good flat-to-flat contact. NOTES:
<br /> All rockeries over 4 feet in height should be constructed on Rockery construction to be completed in accordance with ARC
<br /> basis of wall mass,not square footage of face. Guidelines.
<br /> Earth Solutions NW representative to observe rockery construction
<br /> Size Approximate Approximate and prepare final report.
<br /> Weight-lbs. Diameter
<br /> 1 man 50-200 12-18"
<br /> 2 man 200-700 18-28" '
<br /> 3 man 700-2,000 28-36"
<br /> 4 man 2,000-4,000 36-48"
<br /> 5 man 4,000-6,000 48-54"
<br /> 6 man 6,000-8,000 54-60"
<br /> Reference:Local quarry weight study using average weights
<br /> of no less than six rocks of each man size conducted in
<br /> January 1988.
<br /> LEGEND:
<br /> Earth a; �� � tong LI .
<br /> o ':b f4d Drainage materials to consist of clean angular SolutiOns
<br /> .po;' g.:well-graded quarry spalls,with 4-inch maximum NULL( `? `` `ng,Cor- trucvo,r'lontonng
<br /> size,or other material approved by the geotechnical 9 •' t�arrren,.ai,Scterc
<br /> engineer. .,...a_..::... _::_.�-—... ,. ,
<br /> .I i-- Undisturbed firm Native Soil. CUT ROCKERY DETAIL-NO SURCHARGE
<br /> I I L- Underwood Gartland -Wet Ponds
<br /> 0 o
<br /> Drain pn la minimum de,laidr,perforatedapositive
<br /> - --slotted --
<br /> orrigid plastic PVC pipe,laid with a positive Everett, Washington
<br /> gradient to discharge under control,well away from
<br /> the rockery. .. __ _..
<br /> Drwn. GLS Date 04/01/2015 Proj. No. 2232.02
<br /> , Checked RAC Date April2015 Plate 1
<br /> '' (.f),
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