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BACKFILL MATERIAL _SEE NOTE 5_ C

VIEWS: 6 PAGES: 1

									— W (SEE NOTE 4) —
LIMITS OF PIPE ZONE
BACKFILL MATERIAL
(SEE NOTE 5) 	
X
6"
CONCRETE CLASS C
(SEE NOTE 8) 	
i
FOUNDATION LEVEL
B
; A
'k
AT
(CLASS A DESIGN)
— W (SEE NOTE 4) —
LIMITS OF PIPE ZONE
T
BACKFILL MATERIAL
(SEE NOTE 5) 	
6"
BEDDING MATERIAL
FOR RIGID PIPE
(SEE NOTE 6) 	
I
B
FOUNDATION LEVEL
A
(CLASS B, C, D, DESIGN)
BEDDING FOR RIGID PIPE
— W (SEE NOTE 4) —
LIMITS OF PIPE ZONE
nd
T
1-0"
BEDDING MATERIAL
FOR FLEXIBLE PIPE
(SEE NOTE 7) 	
B
FOUNDATION LEVEL
A
i
(CLASS F DESIGN)
BEDDING FOR FLEXIBLE PIPE
NOTES:
1. PROVIDE UNIFORM SUPPORT UNDER BARREL.
2. HAND TAMP UNDER HAUNCHES.
3. COMPACT BEDDING MATERIAL TO 95% MAX. DENSITY EXCEPT DIRECTLY
OVER PIPE. HAND TAMP ONLY.
BEDDING CLASS DESIGN
4. SEE "EXCAVATION AND PREPARATION OF TRENCH" IN THE SANITARY
SEWERS SECTION OF THE STANDARD SPECIFICTATIONS FOR TRENCH WIDTH
"W" AND TRENCHING OPTIONS. THE PIPE ZONE WILL BE THE ACTUAL
TRENCH WIDTH, EXCEPT FOR CLASS A BEDDING. THE MINIMUM CONCRETE
WIDTH SHALL BE 1-1/2 I.D. + 18".
DIMENSION
CLASS A
CLASS B
CLASS C
CLASS D
CLASS F
6" MIN.
1/4 I.D.
12" MAX.
6" MIN.
6" MIN.
6" MIN.
A
ZERO
5. TRENCH BACKFILL SHALL CONFORM TO "BACKFILLING SEWER TRENCHES"
IN THE SANITARY SEWERS SECTION OF THE STANDARD SPECIFICATIONS,
EXCEPT THAT ROCKS OR LUMPS LARGER THAN 1" PER FOOT OF PIPE
DIAMETER SHALL NOT BE USED IN THE BACKFILL MATERIAL.
1/4 O.D.
1/2 O.D.
1/8 O.D.
B
ZERO
O.D.
3/4 O.D.
1/2 O.D.
1/8 O.D.
C
O.D.
6. SEE "BEDDING MATERIAL FOR RIGID PIPE" IN THE AGGREGATES SECTION
OF THE STANDARD SPECIFICATIONS FOR THE MATERIAL SPECIFICATIONS.
7. SEE "BEDDING MATERIAL FOR FLEXIBLE PIPE" IN THE AGGREGATES
SECTION OF STANDARD SPECIFICATION FOR THE MATERIAL SPECIFICATIONS.
PIPE MUST BE ANCHORED IN SUCH A MANNER AS TO ENSURE FLOW
LINE IS MAINTAINED.
8.
PIPE BEDDING FOR SANITARY SEWER
<U.
ADOPTED
CITY OF RENTON
o
\
G
A
*13
♦
STANDARD PLANS
LST DATE: 01/05
&
(P
MB
Update Dimensions in Table
Corrected note 4	
MB
1-31-05
DT
4-4-97
DCV
Revised notes, 4,5,7,& 8. Added note 6
KJ
2-21-91
SP PAGE: B077
DWG. NAME: B077
BY lAPPR'D
DATE
REVISION

								
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