HomeMy Public PortalAboutPipeBeddingforFlexiblePipe18_48 Diameter9"MIN.
LINE OF ACTUAL
EXCAVATION
"MINIMUM TRENCH WIDTH"
PIPE OUTSIDE DIAMETER
PLUS 18"
PAYLINE WIDTH "W"
SEE TABLE NO. 1
TO LINE OF ACTUAL EXCAVATION
OR TRENCH BRACING.
Pf
' ' 1 LIMESTONE AND SCREENINGS.
r• (MSD 3 - BACKFILL MATERIAL)
j . /I
OUTSIDE OF PIPE BELL ',
OUTSIDE OF PIPE BARREL / PLANE OF SPRINGLINE
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CAREFULLY CONSOLIDATE
BEDDING MATERIAL BETWEEN •'
SPRING LINE AND FLOW LINE
BY AN APPROVED METHOD I riLOW
% 4"MIN.(*)
EXCAVATION Al \ /,. /, A
LINE OF ACTUAL .` ` APAYLINE FOR "C"
IN HIGHLY ORGANIC OR
OPENLY FLOWING SOILS,
THIS DEPTH SHALL BE
INCREASED AS REQUIRED
BY THE DISTRICT.
•
i
,
COMPACTED CRUSHED
PAYLINE FOR "C"
EXCAVATION
9"MIN.1
EXCAVATION
PROVIDE BELL HOLES BLOCKING OF PIPE
AT EACH JOINT NOT PERMITTED
NOTES:
1) CHECK GRADE OF PIPE AFTER COMPACTION TO INSURE THE DESIRED FLOWLINE HAS NOT CHANGED.
2) DURING JETTING PROCESS, NOZZLE SHALL NOT BE INSERTED CLOSER THAN TWO FEET FROM TOP OF PIPE.
3) ANY TRENCH BRACING USED BELOW THE TOP OF PIPE SHALL BE LEFT IN PLACE.
4) FOR INSTALLATIONS IN HIGHLY ORGANIC OR OPENLY FLOWING SOILS, THE ENTIRE PERIMETER OF THE PIPE
BEDDING SHALL BE WRAPPED WIITH AN APPROVED FILTER FABRIC OR THE "MINIMUM TRENCH WIDTH" SHALL
BE EXPANDED BY INCREASING THE DISTANCE BETWEEN THE SIDE OF THE PIPE AND THE LINE OF ACTUAL
EXCAVATION OR TRENCH BRACING TO A MINIMUM OF ONE PIPE DIAMETER.
PIPE BEDDING FOR
FLEXIBLE PIPE
21" — 48" DIAMETER
METROPOLITAN ST. LOUIS SEWER DISTRICT
Standard Details of Sewer Construction
Dr. P.T.K.
Ch. D.R.M.
2009
SHEET 6