HomeMy WebLinkAbout221.20GENERAL NOTES:
7" COUPLING BAND
12" OR 24" COUPLING BAND
MATERIAL TO BE ASTM A
36 1/4" PLATE GALVANIZED
AFTER FABRICATION PER
ASTM A123
all holes
3/4" diam.
slots to be
119/32 x 3/4"
SMOOTH COUPLING BAND
FOR SMOOTH PIPE
PLATE DETAIL
ANCHOR ASSEMBLY
CORRUGATED METAL PIPE
12"
3"
R1" (TYP.)R1" (TYP.)
2"
6 5/8"
4 1/8"
3/4"
7/8"
1 7/8"1 7/8"
4 1/2"4 1/2"
12"
PIPE STAKE (TYP.)
COUPLING BAND
WELD
PLATE (SEE DETAIL)
MATERIAL TO BE ASTM A36
GALVANIZED AFTER FABRICATION
PER ASTM A153
WELD
FLATTEN
TO POINT
1"
1 1/2" x 6' PIPE
STAKES EACH
SIDE OF CULVERT
1.THE SMOOTH COUPLING BAND SHALL BE USED IN
COMBINATION WITH CONCRETE PIPE.
2.CONCRETE PIPE WITHOUT BELL AND SPIGOT
SHALL NOT BE INSTALLED ON GRADES IN EXCESS
OF 20%.
3.THE FIRST ANCHOR SHALL BE INSTALLED ON THE
FIRST SECTION OF THE LOWER END OF THE PIPE
AND REMAINING ANCHORS EVENLY SPACED
THROUGHOUT THE INSTALLATION.
4.IF THE PIPE BEING INSTALLED HAS A MANHOLE OR
CATCH BASIN ON THE LOWER END OF THE PIPE,
THE FIRST PIPE ANCHOR MAY BE ELIMINATED.
5.WHEN CMP IS USED, THE ANCHORS MAY BE
ATTACHED TO THE COUPLING BANDS USED TO
JOIN THE PIPE AS LONG AS THE SPECIFIED
SPACING IS NOT EXCEEDED.
6.ALL PIPE ANCHORS SHALL BE SECURELY
INSTALLED BEFORE BACKFILLING AROUND THE
PIPE.
PIPE ANCHOR REQUIREMENTS AND MAXIMUM PIPE SLOPES
PIPE MATERIAL MINIMUM ANCHOR SPACING PIPE SLOPE ABOVE WHICH
PIPE ANCHORS REQUIRED
MAXIMUM PIPE
SLOPE ALLOWED
STEEL OR PVC1 1 ANCHOR PER 100 LF OF PIPE 20%30%3
CONCRETE, CPE, OR PP1 1 ANCHOR PER 50 LF OF PIPE 10%20%3
DUCTILE IRON2 1 ANCHOR PER PIPE SECTION 20%NONE
SOLID WALL HDPE2 1 ANCHOR PER 100 LF OF PIPE,
CROSS-SLOPE INSTALLATIONS ONLY 20%NONE
NOTES:
1 THESE MATERIALS ARE NOT ALLOWED IN LANDSLIDE HAZARD AREAS.
2 BUTT-FUSED OR FLANGED PIPE JOINTS ARE REQUIRED; ABOVE GROUND INSTALLATION IS RECOMMENDED ON
SLOPES GREATER THAN 40%.
3 A MAXIMUM SLOPE OF 200% IS ALLOWED FOR THESE PIPE MATERIALS WITH NO JOINTS (ONE SECTION), WITH
STRUCTURES AT EACH END, AND WITH PROPER GROUTING
CORRUGATED METAL PIPE COUPLING
AND GENERAL PIPE ANCHOR ASSEMBLY
STD. PLAN - 221.20
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEMartin Pastucha
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
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10/19/2022 | 2:52 PM PDT