HomeMy WebLinkAbout220.10FLEXIBLE PIPE NOTES:
1.PROVIDE UNIFORM SUPPORT UNDER BARRELS.
2.HAND TAMP UNDER HAUNCHES.
3.DIRECTLY OVER PIPE, HAND TAMP ONLY.
4.SEE STANDARD WSDOT/APWA SPECIFICATIONS SECTION 2-09.4 FOR
TRENCH WIDTH.
5.PIPE ZONE BEDDING AND BACKFILL MATERIAL SHALL BE PLACED IN 6"
LOOSE LAYERS AND COMPACTED TO 95% MAXIMUM DENSITY.
6.EXCAVATE UNSTABLE MATERIAL DOWN TO FIRM SOIL AND REPLACE WITH
FOUNDATION MATERIAL CLASS A OR B PER STANDARD WSDOT/APWA
SPECIFICATIONS SECTION 9-03.17.
SEE NOTE 4,
LIMIT OF PIPE ZONE
6"
O.D.
6"
FOUNDATION
LEVEL
PIPE ZONE BEDDING AND
BACKFILL, SEE NOTE 5
FLEXIBLE PIPE
PIPE TYPE MINIMUM
COVER (FT)PUBLIC?PRIVATE?ALLOWED IN ZONE 1
OF THE APA?
LINE CORRUGATED POLYETHYLENE
PIPE (LCPE)2.0 YES YES YES
CORRUGATED POLYETHYLENE PIPE
(CPE) - TRIPLE WALL 2.0 YES YES YES
POLYVINYL CHLORIDE PIPE (PVC)3.0 YES YES YES
SOLID WALL HIGH DENSITY
POLYETHYLENE PIPE (HDPE)2.0 YES YES YES
DIAMETER MINIMUM DISTANCE
BETWEEN BARRELS
12" TO 24"12"
30" TO 96"DIAMETER / 3
102" TO 180"48"
GRAVEL BACKFILL FOR PIPE ZONE BEDDING (WSDOT 9-03.12(3))
OR MAINTENANCE ROCK (WSDOT 9-03.9(4))
FOUNDATION MATERIAL,
IF REQUIRED, SEE NOTE 6
PIPE ZONE BEDDING AND
COMPACTION - FLEXIBLE PIPE
STD. PLAN - 220.10
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEGregg Zimmerman
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
9/28/2018 | 9:45 AM PDT