HomeMy WebLinkAboutS-362511EXTEND GEOGRID �.�--- --'`" ._--- ' ~ 35' KEYSTONE WALL
____ 17' KEYSTONE WALL-___ '�
18" (TYP} - / / OFFSET FACE OF WALL 2 SEE WALL DETAILS BELOW (TYP) ,-
STRETCH GEOGRID UP AND OVER FIBER �.- EAST OF WEST FACE OF CONTROL BUILDING
OPTIC DUCT BANK MINIMUM 6" ABOVE _._- CONTROL BUILDING (TYP)
CONDUITS AS REQUIRED (TYP) ROOF LINE
FIBER OPTIC DUCT BANK �-
DO NOT DISTURB---�-�'
,;. � b GRAVEL BACKFILL FOR WALLS 6
MIN. FROM BACK FACE OF WALL
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3 OF FILL REQUIRED
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KEYSTONE WALL
PROPOSED BACKUP \` �. / —
```--..,. PROPOSED VALVE VAULT;
GENERATOR PAD;
PROPOSED CONTROL BUILDING;
, MECHANICALPIPING CONTINUES UP HILL, SEE CIVIL, MECHANICAL, �-
SEE CIVIL, MECHANICAL, SEE CIVIL,
ELECTRICAL PLANS NOT SHOWN FOR CLARITY ELECTRICAL PLANS
ELECTRICAL PLANS
`-- -- - - ---- — PROPOSED WET WELL;
SEE CIVIL, MECHANICAL,
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RETAINING WALL NOTES
1. PRIOR TO SETTING ANY BLOCKS OR PLACING ANY ROCK FOR THE WALL FOUNDATION,
THE CONTRACTOR SHALL DIG ONE TEST PIT IN EACH THIRD OF THE WALL LENGTH FOR
INSPECTION BY THE GEOTECHNICAL ENGINEER. THE CONTRACTOR SHALL PROVIDE 48
HOURS NOTICE TO THE ENGINEER PRIOR TO THE DESIRED INSPECTION TIME. THE
GEOTECHNICAL ENGINEER WILL PROVIDE INSTRUCTIONS FOR IDENTIFYING POOR
MATERIAL THAT MUST BE OVER -EXCAVATED.
2. BLOCK UNITS SHALL BE KEYSTONE COMPAC UNITS OR APPROVED EQUAL.
3. SHEAR CONNECTORS SHALL BE 1/2 -INCH DIAMETER THERMOSET ISOPTHALIC
POLYESTER RESIN-PULTRUDED FIBERGLASS REINFORCEMENT RODS OR EQUIVALENT
TO PROVIDE CONNECTION BETWEEN VERTICALLY AND HORIZONTALLY ADJACENT UNITS
WITH THE FOLLOWING REQUIREMENTS:
A. FLEXURAL STRENGTH IN ACCORDANCE WITH ASTM D4476:128,000 PSI MIN.
B. SHORT BEAM SHEAR IN ACCORDANCE WITH ASTM D4475:6,400 PSI MIN.
SHEAR CONNECTORS SHALL BE CAPABLE OF HOLDING THE GEOGRID IN THE PROPER
DESIGN POSITION DURING GRID PRE -TENSIONING AND BACKFILLING.
4. CONSTRUCTION EXCAVATION AND WALL PLACEMENT SHALL BE COMPLETED TO
MAINTAIN SLOPE STABILITY PARTICULARLY DURING PRECIPITATION EVENTS.
CONSTRUCTION SLOPE STABILITY SHALL BE THE RESPONSIBILITY OF THE
CONTRACTOR.
5. NATIVE SUBGRADE SHALL BE COMPACTED TO FIRM AND UNYIELDING CONDITION AND
SHALL BE PROOF ROLLED BY A BACKHOE OR AN EXCAVATOR -MOUNTED PLATE
COMPACTOR (OR APPROVED EQUAL) IN PRESENCE OF THE ENGINEER PRIOR TO
PLACING LEVELING PAD ROCK (TYP)
6. LOCATIONS WHERE THE BOTTOM OF THE WALL EXPOSES EXISTING LOOSE/SOFT
ORGANIC -RICH ALLUVIUM, AND WHERE THE BOTTOM OF THE WALL IS WITHIN 2 FEET OF
THIS MATERIAL, A 2 -FOOT OVER -EXCAVATION AND REPLACEMENT WITH PERMEABLE
BALLAST (WSDOT STD. SPEC. 9-03.9(2)) IS REQUIRED. A SHALLOWER PAD (MIN.
THICKNESS 6") MAY BE USED WITH THE ENGINEER'S APPROVAL. OVER -EXCAVATION
BELOW THE BOTTOM OF THE 6 LEVELING PAD SHALL BE PAID UNDER BID ITEM
"REMOVAL AND REPLACEMENT OF UNSUITABLE FOUNDATION MATERIAL." A CRUSHED
SURFACING BASE COURSE (CSBC, WSDOT STD. SPEC. 9-03.9(3)) LEVELING PAD MAY
REPLACE THE TOP 3 INCHES OF PERMEABLE BALLAST IN OVER -EXCAVATION AREAS IF
DESIRED.
7. ALL NATIVE AND IMPORTED FILL MATERIAL SHALL BE COMPACTED TO FIRM AND
UNYIELDING CONDITION. FOUNDATION SOILS AND ROCK SHALL BE COMPACTED TO 95%
MODIFIED PROCTOR. COMPACTABLE NATIVE MATERIAL MAY BE USED FOR WALL
BACKFILL WITH ENGINEER'S APPROVAL.
8. SURFACE TREATMENTS IN DISTURBED AREAS TO BE FURNISHED PER CIVIL PLANS.
REVISED TO CONFORM
TO CONSTRUCTION RECORDS
RN2 ENGINEERING INC.
BLOCK ELEVATION
12" + :0
18"
BLOCK PLAN
KEYSTONE COMPAC UNIT
OR APPROVED EQUAL
4"
CAP ELEVATION
10 1/2" f
18 to __wd
CAP PLAN
KEYSTONE UNIVERSAL CAP UNIT
OR APPROVED EQUAL
KEYSTONE WALL PLAN
3/8» _ it—on
TWO 4" CAP UNITS OR r- 4" CAP UNIT
NOTE:
SECURE ALL CAP UNITS WITH KEYSTONE KAPSEAL OR
APPROVED EQUAL.
TOP OF WALL STEPS.
NTS
NOTE:
GEOGRID IS TO BE PLACED ON
LEVEL BACKFILL AND EXTENDED
OVER THE FIBERGLASS PINS.
PLACE NEXT UNIT. PULL GRID
TAUGHT AND BACKFILL. STAKE AS
REQUIRED.
FIBE���Ln��
MATERIAL NOTES
IDENTIFIER
MATERIAL
WSDOT STD. SPEC. -
MATERIAL
WSDOT STD. SPEC. -
COMPACTION
1Q
CRUSHED SURFACING BASE COURSE
9-03.9(3)
2-03.3(14)C
Q2
GRAVEL BORROW FOR GEOSYNTHETIC RETAINING WALL
9-03.14(4)
2-03.3(14)C
U3
COMMON BORROW OR NATIVE (ENGINEER'S APPROVAL REQ'D)
9-03.14(3)
2-03.3(14)C
4Q
TENCATE MIRAFI MIRAGRID 3XT OR APPROVED EQUAL
-
-
5Q
GEOTEXTILE FILTER FABRIC
9-33.2(1) TABLE 2 - CL. A
Q6
PERMEABLE BALLAST
9-03.9(2)
2-03.3(14)C
Q7
GRAVEL BACKFILL FOR WALLS
j 9-03.12(2)
j -
CONTRACTOR RESPONSIBLE
FOR CONSTRUCTION SLOPE
STABILITY
4" CPE PERFORATED PIPE,
ROUTE TO STORM DRAIN (TYP)
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MATCH EXISTING SLOPE,
SURFACE TREATMENT PER CIVIL PLANS
fCAP UNIT
BLOCK UNIT
1/8"- 1/411
g• �I PROVIDE 1.5' MINIMUM COVER
FOR BOTTOM OF WALL (NP)
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KEYSTONE WALL BLOCK DETAILS GEOGRID CONNECTION DETAIL TYPICAL MSE KEYSTONE BLOCK WALL SECTION
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