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
POLYPROPYLENE PIPE (PP) - DUAL WALL 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:
DATEMartin Pastucha
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
DocuSign Envelope ID: 3B1B34D3-7E0A-476C-ADB3-4329FFE0C108
8/13/2020 | 8:48 AM PDT