HomeMy WebLinkAbout221.30 (2022)6" MIN.
2' MIN.
6" MIN.
3' MIN.
PIPE BEDDING
CONCRETE BLOCK
A
B
STRAP FOOTING
ANCHOR
6" MIN. (TYP.)
12" MIN.
6" MIN.
6" MIN.
CONCRETE FOOTING KEYED INTO
UNDISTURBED SOIL AS SHOWN
GENERAL NOTES:
1.FOR SOLID WALL HDPE PIPE LAID ON THE SURFACE,
PIPE MUST BE FREE TO SLIDE INSIDE A 4' LONG
SECTION OF PIPE ONE SIZE DIAMETER LARGER.
1" MIN. DIA. STEEL ROD (STRAP)
CLAMPED SECURELY TO PIPE
CONCRETE FOOTING KEYED INTO
UNDISTURBED SOIL AS SHOWN
6" MIN.
12" MIN.2 x PIPE DIA.
MIN.
SECTION A
CONCRETE BLOCK
ANCHOR
SECTION B
TABLE 4.2.1.A3 MAXIMUM PIPE SLOPES AND VELOCITIES
PIPE MATERIAL
PIPE SLOPE ABOVE
WHICH PIPE
ANCHORS REQUIRED
AND MIN. ANCHOR
SPACING
MAX. SLOPE
ALLOWED
MAX. VELOCITY AT
FULL FLOW
CMP, SPIRAL RIB, PVC1 20% (1 ANCHOR PER
100 LF OF PIPE)30%3 30 FPS
CONCRETE, CPE, OR PP1 10% (1 ANCHOR PER
50 LF OF PIPE)20%3 30 FPS
DUCTILE IRON2 20% (1 ANCHOR PER
PIPE SECTION)NONE NONE
SOLID WALL HDPE2
20% (1 ANCHOR PER
100 LF OF PIPE,
CROSS-SLOPE
INSTALLATIONS ONLY)
NONE 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
STRAP PIPE ANCHOR
STD. PLAN - 221.30
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