APPROVED BLD ENG-Sharma - temporary site shoring for upper retaining wall 06-09-2020[1]O_ _
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49 1. PERMANENT CAST IN PLACE CONCRETE
RETAINING WALL. W o
EXISTING OPEN CUT 2, TEMPORARY ECOLOGY BLOCK SITE SHORING
TEMPORARY SHORING IS NOT WALL, o co 3
REQUIRED TO INSTALL PERMANENT 3, TEMPORARY EXCAVATION SHALL NOT EXTEND v LU
SITE RETAINING WALL INTO ROADWAY, v o oc
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LEGEND
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C STEP FTG, AT PERMANENT RET WALL W
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2 i TEMPORARY ECOLOGY BLOCK SHORING WALL 16 Y
SEE FIGURE 1 BELOW ,�
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�o REQUIRED OBSERVATION O �0744
COBALT GEOSCIENCES SHALL VERIFY KEYWAY, Fs cr�A�L
rL p DRAINAGE, BACKFILL, SOIL CONDITIONS AND w/o AL
D BLOCK INSTALLATION DURING CONSTRUCTION
L v v v v Dv OF THE TEMPORARY SITE SHORING WALL
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TEMPORARY SITE SHORING PLAN 2' 8' W Z =
SCALE 1/811 = 11-011 0' 4' 16'
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Max.4H:IV Roadway LU
Slope at 3 Feet Height W
�-3 Ft. Min.H — -- —
For total wall heights Z
Of up to 12 feet
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Area of Compacted Backfill, Angular Rock, X W
4-6a or Cut Native Soils (See Report) LL
LUBatter � O
Q a 2 to 4 Inch Angular Quarry Rock
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5 Feet nypiLal) g Min. 4 Inch Diameter Perforated PVC Pipe
6 Inches (Schedule 40) O LL.
Minimum O
NOTES:
For use with 2.5x2.5x5' interlocking concrete blocks Not to Scale LU Z
Backfill zone may consist of compacted structural fill, clean angular
rock, or cut native soils depending on wall location. If compacted V O
fill is used, it must be compacted to at least 90 percent of the modified proctor
ASTM D1557 Test Method in lifts up to subgrade and verified through
testing and monitoring during placement. Q per WAS qc9 Q LU d
Plastic sheeting should be draped over the top of the wall, extending =
over the backfill zone and secured on the edge of roadway pavement LU
Cobalt to verify keyway, drainage, backfill, soil conditions, `'b L
and block installation during construction 54896
4�� �FClSTER��\�v
SSA WAL
Exp. 6-26-2020
Cobalt Geosciences, LLC
Temporary Shoring GraVityWall P.O. Box 82243 SHEET:
COBALT 15712 - 72nd Avenue West Layout Kenmore, WA 98028
(2o6)33t-to97
GEOSCIENCES Edmonds, Washington Figure i www.cobaltp-,eo.com
cobaltgeoggmail.com
_SH1OF 1
S-19-083A