HomeMy WebLinkAboutSWP2702240.2463
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Material to b(
31 114" plate galv
30 fabrication pE
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'Swig 1
JOW Ob -
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Cw J 4 DESIGNED BY
o = ~3 ENTERED BY
v ' t-- w
= o CHECKED BY
NNS `2
PROJ. ENGR.
1 DIST. ADM.
D.B. MLLBY
G. WEBBER
J. JOHNSON
R.Q. ANDERSON
12"
SMOOTH COUPLING BAND FOR CONCRETE PIPE
3"
PLATE DETAIL
NOTES: 1. Payment for pipe anchors which
shall include all pipe stakes and
hardware shall be considered
as incidental and shall be
included in the per linear foot
cost of pipe.
2. The smooth coupling band shall
be used in combination with
concrete pipe.
3. Concrete pipe without bell
and spigot shall not be installed
on grades in excess of 20%.
4. 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.
5. 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.
6. When C.M.P. is used, the anchors
maybe attached to the coupling
bands used to join the pipe as long
as the specified spacing is not
exceeded.
7. All pipe anchors shall be
securely installed before
backfilling around the pipe.
ling band
4 couplin
Flatten to point
REM�ON ISTATEI FED. AI D PROJ . NO.
10 WASH
JOB NUMBER
91WO97
CONTRACT NO.
I-IR-405-3(783)
r
:)e)
ANCHOR SPACING SCHEDULE
Pipe
Maximum Anchor Spacing
4:1 Slope *
3:1 Slope
2:1 Slope
Dia•
Conc.-C.M.P.
Conc.
C.M.P.
Conc.
C.M.P.
8"
125"
250'
95"
190'
65'
135'
12"
55'
130'
40'
100'
30'
70'
18"
25'
65
20
50'
15'
35'
For grades 10% to 20%
For grades 20% to 30%
- For grades 30% to 40%
For grades 40% to 55%
ate (see Detail)
Use
spacing
for
4:1
slope
Use
spacing
for
4:1
slope
Use
spacing
for
3:1
slope
Use
spacing
for
2:1
slope
The number of pipe anchors per run of
pipe shall be determined by the
following formula:
Number of Anchors - Length of Pipe
Spacing from Schedule
1. Fractions 0.3 or larger shall
be rounded to the next higher
number.
2. Fractions below 0.3 shall be
dropped except the minimum number
of anchors shall be one (1) when
more than one section of pipe
is used.
al to be ASTM A 36 galvanized
fabrication per ASTM A 153
1 �/z" x 6' pipe stakes
each side of culvert
ANCHOR ASSEMBLY - CORRUGATED METAL PIPE
HIGHWAY DIYISIDN
TrWvshington State
Af Department of Transportation
Z GA2:[ 110002791 W097D.DGN;1
FOR "AS CONSTRUCTED
PLANS" ONLY
SR 405
SOUTH RENTON TO SUNSET BLVD.-HOV
DRAINAGE DETAILS
DP-21
SHEET
1:5Z
OF
IP54
SHEETS
DATE I DATE
REVISION
M
li -�2�0/
SR