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NO TES
UANNAI F FRAMF
zl
PIPE SEAT LEVEL.
SEE NOTE 8
. V1�
STREET AND COVER PER E BARS
GRADE STD. PLAN 630
3"
MANHOLE SHAFT R
24'_ o e�Rs 3 1 _
12'-W ^'
P 10
PER STD. 50x2' PIPE P-14•2.-4�
PLAN 324 SEAT i f-
�3• _0•�� E BARS W
1/f
.
TIE BARS
f�
GRADE POINTS.
STEPS SEE NOTE 4
TIE BAR 5 4'
R SECTION B -B
ROUND F F
2.
F
3.
SPRING LINE
4.
EDGES TO BE
EDGE OF CONCRETE
78'
6.
ROUNDED
T.
D BARS
8.
TO 3' R
9.
3' oc
PLAN 324
TO 8E USED
10.
UANNAI F FRAMF
zl
PIPE SEAT LEVEL.
SEE NOTE 8
. V1�
STREET AND COVER PER E BARS
GRADE STD. PLAN 630
3"
MANHOLE SHAFT R
24'_ o e�Rs 3 1 _
12'-W ^'
P 10
PER STD. 50x2' PIPE P-14•2.-4�
PLAN 324 SEAT i f-
�3• _0•�� E BARS W
1/f
.
TIE BARS
f�
GRADE POINTS.
STEPS SEE NOTE 4
TIE BAR 5 4'
R SECTION B -B
ROUND F F
DI
F
OPTIONAL OUTSIDE
SPRING LINE
F
EDGES TO BE
EDGE OF CONCRETE
78'
11 3/4'
ROUNDED
CONCRETE RINGS
D BARS
B� a I
TO 3' R
_
3' oc
PLAN 324
TO 8E USED
r
•3 TIE BAR
_
S�_R=ID OF SPUR
C + tC
60' OR OVER
15 1/2'
STEP IN
SECTION A -A
4-06. E BARS At
PAVED
STREETS
54'
9'
3'-3* LONG.
16 -1/ 2'
1
L J 4-•4 H BARS
SEE NOTE 2
17'
STREETS. 2'-2*
9 1/2'
1226* 177'
FOR UNPAVED
STREETS
•3 TIE BAR
3'-0* LONG
D BARS
=
10 3/4'
4, _0
18'
72'
II'
I
SEE NOTE 9
Rj a
DIMEMSIDN WILL NOT BE PERMITTED
w w'
DETAIL N
3
3-•4 J BARS 4'-8
(RINGS AND COVER NOT SHOWN)
CONCRETE PIPE
LONG 3' OC CON' T.
F ADD -L. BARS 6' OC
(SEE NOTE I)
1
TO INSIDE EDGE OF
of D N
MANHOLE. SEE NOTE 2
UANNAI F FRAMF
zl
PIPE SEAT LEVEL.
SEE NOTE 8
. V1�
STREET AND COVER PER E BARS
GRADE STD. PLAN 630
3"
MANHOLE SHAFT R
24'_ o e�Rs 3 1 _
12'-W ^'
P 10
PER STD. 50x2' PIPE P-14•2.-4�
PLAN 324 SEAT i f-
�3• _0•�� E BARS W
1/f
.
TIE BARS
f�
GRADE POINTS.
STEPS SEE NOTE 4
TIE BAR 5 4'
R SECTION B -B
ROUND F F
J BA S
D
EDGES
SPRING LINE
F
TO 3'R
6 1/2'
78'
11 3/4'
39'
CONCRETE RINGS
•4®18' OC
INLET
PER STD.
BOTH WAYS. T'-1
ELEVATION
PLAN 324
TO 8E USED
APPLIES AT
96'
WHEN D2 IS
THIS POINT
OMIT THIS
60' OR OVER
15 1/2'
STEP IN
SECTION A -A
108'
PAVED
STREETS
54'
9'
H BARS
16 -1/ 2'
1
16' FOR PAVED
120'
17'
STREETS. 2'-2*
9 1/2'
1226* 177'
FOR UNPAVED
STREETS
TABLE OF VALUES
FOR F
D
F
DZ
F
36'_1
6 1/2'
78'
11 3/4'
39'
7'
84'
12 1/2'
42'
7 I/2"
90'
13 1/4'
45'
7 3/4'
96'
14'
48'
8'
102'
15 1/2'
5i.
8 I/2'
108'
16'
54'
9'
114'
16 -1/ 2'
1
9 1/4'
120'
17'
_57.
60' '
9 1/2'
1226* 177'
63^j
66'
10'
10 1/4•
132'
138'
i7 I/2'
69'
10 3/4'
144' '
18'
72'
II'
I
�� t A
Te"T GR ADE
?ING SEAT
H BARS
SEE TABLE
VARIABLE
E BARS
SECTION C -C
•3 OR •4
TIE BARS
J BARS
ROUND
EDGES
TO 3'R
TABLE OF VALUES FOR M (SEE NOTE 1)
SECTION
A-A-12�-10
PAVED STREET UNPAVED STREET- - -- -----t-------T----
MAX. MIN. MAX. MIN.
1/2' 3'-6•
' C -C
II' • 1/2' 16' IS'
WHEN DEPTH M FROM STREET GRADE TO THE TOP OF THE BOX IS LESS
THAN 2'-10 I/2" FOR PAVED STREETS OR 3'-6" FOR UNPAVED STREETS,
CONSTRUCT SHAFT PER SECTION C -C AND DETAIL "N'. DEPTH M MAY BE
REDUCED TO AN ABSOLUTE LIMIT OF 6" WHEN LARGER VALUES OF M
WOULD REDUCE H IN SECTION C -C TO 3'-6" OR LESS.
H (IN SECTION A -A AND B -B) SHALL NOT BE LESS THAN 4'-0'. BUT MAY
BE INCREASED PROVIDED THAT THE VALUE OF M SHALL -NOT BE LESS
THAN THE MINIMUM SPECIFIED AND THAT THE REDUCER SHALL BE USED.
FOR H (IN SECTION C -C) SEE NOTE I.
L SHALL BE 4'-0* UNLESS OTHERWISE SHOWN. L MAY BE INCREASED OR
LOCATION OF MANHOLE SHIFTED TO MEET PIPE ENDS, BUT ANY CHANGE
IN LOCATION OF THE SPUR MUST BE APPROVED BY THE ENGINEER. r
T SHALL BE 8' FOR VALUES OF H UP TO AND INCLUDING 8' -Oa AND 10" FOR
VALUES OF H OVER 8' -0".
STATIONS OF MANHOLES SHOWN ON PROJECT DRAWINGS APPLY AT
CENTER LINE OF SHAFT. ELEVATIONS ARE SHOWN AT CENTER LINE OF
SHAFT AND REFER TO THE PROLONGED INVERT GRADE LINES. SEE NOTE 3.
REINFORCEMENT SHALL CONFORM TO ASTM A 615. GRADE 40. AND SHALL
TERMINATE 1 1/2' CLEAR OF CONCRETE SURFACES UNLESS OTHERWISE
SHOWN.
FLOOR OF MANHOLE SHALL BE STEEL TROWELED TO SPRING LINE.
BODY OF MANHOLE SHALL BE POURED IN ONE CONTINUOUS OPERATION
EXCEPT THAT A CONSTRUCTION JOINT WITH A LONGITUDINAL KEYWAY
MAY BE PLACED AT SPRING LINE.
THICKNESS OF THE DECK SHALL VARY WHEN NECESSARY TO PROVIDE
A LEVEL SEAT BUT SHALL NOT BE LESS THAN 8"
STEPS SHALL CONFORM TO STANDARD PLAN 635 OR 636. UNLESS OTHERWISE
SHOWN. STEPS SHALL BE UNIFORMLY SPACED 14" TO 15" OC. THE LOWEST
STEP SHALL NOT BE MORE THAN 24" ABOVE THE LEDGE AT THE SIDE OF
THE MANHOLE.
NOTES
I. WHEN DEPTH M FROM STREET GRADE TO THE TOP OF THE BOX IS LESS
THAN 2'-10 1/2' FOR PAVED STREETS OR 3'-6" FOR UNPAVED STREETS.
CONSTRUCT MONOLITHIC SHAFT PER SECTION C -C AND DETAIL 'N".
SHAFT FOR ANY' DEPTH OF MANHOLE MAY BE CONSTRUCTED PER
SECTION C -C. WHEN DIAMETER DI IS 48' OR LESS. CENTER OF SHAFT
MAY BE LOCATED PER NOTE 2.
2. CENTER OF MANHOLE SHAFT SHALL BE LOCATED OVER CENTER LINE OF
STORM DRAIN WHEN DIAMETER DI IS 48' OR LESS, IN WHICH CASE PLACE
E BARS SYMMETRICALLY AROUND SHAFT AT 450 WITH CENTER LINE AND
OMIT J BARS.
3. L AND P SHALL HAVE THE FOLLOWING VALUES UNLESS OTHERWISE SHOWN
ON THE PROJECT DRAWINGS:
A. D2=96* OR LESS. L=5'-60. P=50
B. D2 OVER 96% L= 6' -0', P=88
L MAY BE INCREASED OR LOCATION OF MANHOLE SHIFTED TO MEET PIPE
ENDS. WHEN L GREATER THAN THAT SHOWN ABOVE IS SPECIFIED. D BAR$
SHALL BE CONTINUED 6'OC.
4. STATIONS OF MANHOLES SHOWN ON PROJECT DRAWINGS APPLY AT CENTER
LINE OF SHAFT. ELEVATIONS ARE SHOWN AT CENTER LINE OF SHAFT AND
REFER TO THE PROLONGED INVERT GRADE LINES.
S. REINFORCEMENT SHALL CONFORM TO ASTM A 615, GRADE 40. AND SHALL
TERMINATE 1 1/2' CLEAR OF CONCRETE SURFACES UNLESS OTHERWISE
SHOWN.
6. FLOOR OF MANHOLE SHALL BE STEEL TROWELED TO SPRING LINE.
7. BODY OF MANHOLE SHALL Bf POURED IN ONE CONTINUOUS OPERATION
EXCEPT THAT A CONSTRUCTION JOINT WITH A LONGITUDINAL KEYWAY MAY
BE PLACED AT SPRING LINE.
S. THICKNESS OF THE DECK SHALL VARY WHEN NECESSARY TO PROVIDE A
LEVEL SEAT BUT SHALL NOT BE LESS THAN THE TABULAR VALUES FOR F
SHOWN ON TABLE SH. I.
9. D BARS SHALL BE •4 FOR D2=390 OR LESS. •5 FOR D2=42* TO 84'
INCLUSIVE AND •6 FOR D2=90' OR OVER.
10. CENTER LINE OF INLET PIPE SHALL INTERSECT INSIDE FACE OF CONE AT
SPRING LINE UNLESS OTHERWISE SHOWN.
If. STEPS SHALL CONFORM TO STANDARD PLAN 635 OR 636 UNLESS OTHERWISE
SHOWN. STEPS SHALL BE UNIFORMLY SPACED 140 TO 15" OC. THE LOWEST
STEP SHALL NOT BE MORE THAN 24' ABOVE THE INVERT.
12. THE FOLLOWING CRITERIA SHALL BE USED FOR THIS MANHOLE:
A. MAIN LINE : 36' INSIDE DIAMETER OR LARGER. EXCEPT IF MAIN LINE
RCP DOWNSTREAM OR MANHOLE IS 36' TO 42' INSIDE DIAMETER AND
MAIN LINE RCP UPSTREAM IS 33' OR LESS STANDARD PLAN 321 SHALL
BE USED.
Mo -W27$
Ar EIIp.9/30/"
If. THE FOLLOWING CRITERIA SHALL BE USED FOR THIS MANHOLE:
A. MAIN LINE x 33' INSIDE DIAMETER OR LESS. (EXCEPTION - IF THE
MAIN LINE RCP DOWNSTREAM OF THE MANHOLE IS 36' TO 42' INSIDE
DIAMETER AND THE MAIN LINE RCP UPSTREAM IS 33' OR LESS.)
' STANDARD PLAN 320 OR STANDARD PLAN 322 IS NOT APPLICABLE
WHERE THE MAIN LINE CONDUIT IS LESS THAN 36' IN DIAMETER.
B. SEE SECTION A - A. THE MAXIMUM SIZE LATERAL THAT MAY BE
CONNECTED TO THIS MANHOLE IS SUCH THAT THE DISTANCE FROM
THE OUTSIDE (TOP) OF THE LATERAL TO THE BOTTOM OF THE 8'
THICK TOP OF THE MANHOLE CHAMBER. MEASURED VERTICALLY FROM
THE END OF THE RCP, SHALL BE A MINMUM OF 6'.
C. IF THE SIZE OF THE LATERAL IS SUCH THAT THE ABOVE-SPECIFIED
MINIMUM DISTANCES CANNOT BE MAINTAINED. THEN ONE OF THE
FOLLOWING ALTERNATE SOLUTIONS MUST BE USED,
I. PROVIDE A SPECIAL STRUCTURE.
2. PROVIDE TWO STANDARD STRUCTURES, CONSISTING OF THIS
MANHOLE PLACED UPSTREAM OR DOWNSTREAM FROM THE APPLICABLE
JUNCTION STRUCTURE OR TRANSITION STRUCTURE.
12. MANHOLE FRAME AND COVER SHALL CONFORM TO STANDARD PLAN 630
UNLESS OTHERWISE SHOWN.
13. MANHOLE SHAFT SHALL CONFORM TO STANDARD PLAN 324 UNLESS
OTHERWISE SHOWN.
14. WHERE A MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER IS SPECIFIED
REFER TO STANDARD PLAN 336.
15. WHERE A PRESSURE MANHOLE SHAFT - WITH ECCENTRIC REDUCER IS
SPECIFIED REFER TO STANDARD PLAN 328.
16. WHERE A PRESSURE MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER IS
SPECIFIED REFER TO STANDARD PLAN 329.
THE FOLLOWING STANDARD PLANS ARE INCORPORATED HEREIN:
324 MANHOLE SHAFT - WITH ECCENTRIC REDUCER
326 MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER
328 PRESSURE MANHOLE SHAFT - WITH ECCENTRIC
329 PRESSURE MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER
630 24 -INCH MANHOLE FRAME AND COVER
633 36 -INCH MANHOLE FRAME AND COVER
635 STEEL STEP _
636 POLYPROPYLENE PLASTIC STEP
B. THE OUTSIDE DIAMETER OF THE LATERAL MUST BE LESS THAN OR
EOUAL TO 1/2 THE INSIDE DIAMETER OF THE MAIN LINE. IF THE
UPSTREAM AND DOWNSTREAM DIAMETERS OF THE MANHOLE ARE NOT
THE SAME, THE GOVERNING INSIDE DIAMETER OF THE MAIN LINE
SHALL BE CONSIDERED TO BE THAT WHERE THE EXTENDED CENTER
LINE OF THE LATERAL ENTERS THE MANHOLE.
C. IN NO INSTANCE SHALL THE INSIDE DIAMETER OF THE LATERAL TO
THE MANHOLE BE GREATER THAN 30'.
13. MANHOLE FRAME AND COVER SHALL CONFORM TO STANDARD PLAN 630 -
UNLESS OTHERWISE SHOWN.
14. MANHOLE SHAFT SHALL CONFORM TO STANDARD PLAN 324 UNLESS
OTHERWISE SHOWN.
15. WHERE A MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER IS SPECIFIED
REFER TO STANDARD PLAN 326.
16. WHERE A PRESSURE MANHOLE SHAFT - WITH ECCENTRIC REDUCER IS
SPECIFIED REFER TO STANDARD PLAN 328.
17. WHERE A PRESSURE MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER IS
SPECIFIED REFER TO STANDARD PLAN 329.
THE FOLLOWING STANDARD PLANS ARE INCORPORATED HEREIN:
324 MANHOLE SHAFT - WITH ECCENTRIC REDUCER
326 MANHOLE SHAFT - 36 -INCH WITHOUT REDUCER
328 PRESSURE MANHOLE SHAFT - WITH ECCENTRIC
329 PRESSURE MANHOLE SHAFT 36 -MCH WITHOUT REDUCER
630 24 -INCH MANHOLE FRAME AND COVER
633 36 -INCH MANHOLE FRAME AND COVER,
635 STEEL STEP
636 POLYPROPYLENE PLASTIC STEP
AMERICAN PUBLIC WORKS ASSOCIATION - SOUTHERN CALIFORNIA CHAPTER
MIOMJLOAIlD /Y TI!M A/NA-AOC
JOLT C°"PM, E
MANHOLE PIPE TO PIPE (ONE OR
BOTH MAIN LINE ID'S 33" OR SMALLER
X21-0
USE WITH STANDARD SPECMATIOIIS FOR MJNLIC WORKS CCN' S I "m I K>IN
t
B
TOP OF BODING B UNLESS
BACWILL SHALL bE
•
EDGES TO BE
OTHERWISE NOTED IN THE
SPECIFICATIONS-
SPECIFICAT(UNS FOIL
1U%LIC WDRKS
CONSTRUCTION t LATEST EDITION),
-
Fa.
ROUNDED
SPECIFIED
AS FOLLOWS:
W
EXCAVATED BANK OR SHEETING
w •
BEDDING a
SEWING A
ROCKS GREATEII THAN (c" IN ANY
TO 3' R
DIMENSION WILL NOT BE PERMITTED
`
z =
IN r
IN BACKFILL PLACED GETWEEN 1'
10%
..• ..
GROVE THE 'TOP Of ANY PIPE OR BOY,
RCP LESS THAN 39' IN DIAMETER.
C+
�Np 1' IJE LQW YAVEIVIEUT SUI3GRADE.
IN NO CASE SHALL IT BE LESS THAN
1" BELOW ANY BELL OR COLLAR
EXCAVATION TO THIS
4' WN. LINE PERMITTED17.
t C
ROCKS GREATER 11�Ru 21 N IN ANY
I
�� t A
DIMEMSIDN WILL NOT BE PERMITTED
CASE
3
IN SACKF ILL PLACED W ITU IM 1' OF
REINFORCED
CONCRETE PIPE
PAVEMEMT SURGRADE,
_
1
R = 1 0
_
OF SPUR 2
I2
-
-
f-
ALL STEEL REINF.
•4 0 4' OC;r
�-•
1
DETAIL "N"
PLAN
-�� )RINGS
AND COVER NOT
SHOWN)
' PLAN
f�
SEE NOTE I
(SHAFT NOT SHOWN) `
STREET GRADE --MANHOLE
FRAME
STREET GRADE
AND COVER PER CONCRETE RINGS
CO
STD. PLAN 630 STD. PLAN 324
S'xl' RING
OMIT THIS STEP
FSEAT
w
co
f
IN PAVED STREETS
MANHOLE
N
`''
N
24•
N
SHAFT16' FOR PAVED
PER STD.
�===
~
PLAN 324 STREETS. 2'-2'
9' S'
N
FOR UNPAVED
M
T
T
W
in
fjf3-
STREETS
m ~
•__
10
`_=
5'x2' PIPE SEAT
=
T
IL 3' -
T
ROUND EDGES
I/2"
? vi
OF INLETS
_
--- ROUND EDGES
INLT EVATION
SECTION
C -C
A PELIES AT THIS
POINT
SECTION
A -A
STATION LINE
-
3' 70-
-
IT. T 6
r/
S
STEPS
T
i i8• T
,
TABLE
0 VALUES
M( NO 1)
3'R
PAVED STREET
UNPAVED STREET
I
_
I
SECTION
MAX.1 MIN.
MAX. MIN.
II
-A
12-10 1/2'
3' -6'
_A
C -C
1I' 1 8 112*1
1 rpIS'
L+2T-8'
4'
it
OPTIONAL BOTTOM' ._.
GRADE POINTS.
SEE NOTE 5
AMERICAN PUBLIC WORKS ASSOCIATION - SOUTHERN CALIFORNIA CHAPTER
MIOMJLOAIlD /Y TI!M A/NA-AOC
JOLT C°"PM, E
MANHOLE PIPE TO PIPE (ONE OR
BOTH MAIN LINE ID'S 33" OR SMALLER
X21-0
USE WITH STANDARD SPECMATIOIIS FOR MJNLIC WORKS CCN' S I "m I K>IN
CASE 3 BEDDING a BACKFILL AROUND RCP (LOAD FACTOR 1.01
(e) W AT SPRING LINE SMALL NOT BE LESS THAN THE FOLLOWING: G• FOR
RCP 60' OR LESS IN DIAMETER. 100 FOR RCP 63' TO IDB' INCLUSIVE IN
DIAMETER. AND 12' FOR PIPE LARGER THAN 104' IN DIAMETER. THESE
DIMENSIONS MAY INCLUDE THE THICKNESS OF ANY SHEETING.
(►) INHERE COVER IS 10'-0' OR LESS. W MEASURED AT THE TOP OF THE RCP MAY
BE ANY DIMENSION GREATER THAN THE ABOVE SPECIFIED MINIMUM. UNLESS
OTHERWISE SPECIFIED ON THE PROJECT DRAWINGS.
(e) WHERE COVER IS GREATER THAN 10'-00. W MEASURED AT TOP Of PIPE SHALL
NOT BE GREATER THAN 10' FOR RCP TOB' IN DIAMETER OR LESS. OR Ir
FOR RCP OVER 100' IN DIAMETER UNLESS THE CONTRACTOR AT HIS OWN
EXPENSENCLUDE TME TNES ESS I BEDDING OR ANY STRONGER RCP.. THESE DIMENSIONS
(A SCREED BEDDING A TO FIT CURVATURE AND (GRADE Of RCP. TYPE Of SCREED
AND THE METHOD OF USE TO BE APPROVED BY THE ENGINEER.
KTIE
1. USE CASE 3 FOR RCP. CASE 2 FOR VITRIFIED CLAY. PLASTIC AND S. WHERE CALLED FOR BY THE DEPARTMENT'S STRUCTURAL DESIGN
P00M CONCRETE PIPE UNLESS OTHERWISE SPECIFIED OR SHOWN ON MANUAL. OR WHERE SPECIFIED ON THE PROJECT DRAWINGS.
THE PROJECT DRAWINGS. CONCRETE SHALL BE 420-C-2000.
2. FOR RCP 270 IN DIAMETER AND LARGER. BEDDING A SMALL BE COM- G- CONCRETE BACKFILL SHALL BE POURED FROM WALL TO WALL OF
POSED OF SAND, 3/4. OR 1/2' CRUSHED ROCK. NO. 3 OR 4 CONCRETE THE TRENCH AND FROM THE BOTTOM OF THE TRENCH TO A MINIMUM
AGGREGATE OR GRAVEL OR OTHER GRANULAR MATERIAL AS SPECIFIED DEPTH OF 4. OVER THE TOP OF THE PIPE.
AND SHALL HAVE A SAND EOUIVALENT VALUE OF NOT LESS THAN 20
UNLESS OTHERWISE APPROVED BY THE ENGINEER. 7. CONCRETE BACKFILL SHALL BE PROVIDED FOR RCP 1B' IN DIAMETER
OR LESS WHERE THE COVER IS EOUAL TO OR LESS THAN 24', FOR
3. WHERE RCP SMALLER THAN 27' IN DIAMETER IS USED. THE REOUIRE- RCP GREATER THAN 21' IN DIAMETER BUT LESS THAN 39' WHERE
MENTS IN NOTE 2 SHALL BE MET EXCEPT THAT A GRADATION NO THE COVER IS LESS THAN Is' AND FOR RCP 39' OR GREATER WHERE
COARSER THAN NO. 4 CONCRETE AGGREGATE OR NO COARSER THAN THE COVER IS LESS THAN 12'. CONCRETE BACKFILL SMALL BE IN
1/2' CRUSHED ROCK SHALL BE USED. ACCORDANCE WITH NOTES 3 AND 6.
4. BEDDING B SHALL BE COMPOSED OF SAND OR OTHER GRANULAR S. 3 -EDGE BEARING TEST LOAD FACTOR I.O.
MATERIAL AND SHALL HAVE A SAND EOUIVALENT VALUE NOT LES=,
THAN 20 AS SPECIFIED IN SUBSECTION 306-1.2.1 AS AMENDED UN-
LESS OTHERWISE APPROVED BY THE ENGINEER AND SHALL BE COM-
PLETED PRIOR TO PLACING THE BALANCE OF THE BACKFILL. THE
MAXIMUM ROCK SIZE FOR BEDDING B SHALL BE 4' IN THE GREATEST
DIMENSION. NESTING OF ROCKS WILL NOT BE PERMITTED.
LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
STANDARD PLAN
PIPE BEDDING IN TRENCHES - 3080-0
t
TOP OF BODING B UNLESS
BACWILL SHALL bE
PURSUANT TO
SECTION 30(o-1.5.1 OF THE StANDARU
OTHERWISE NOTED IN THE
SPECIFICATIONS-
SPECIFICAT(UNS FOIL
1U%LIC WDRKS
CONSTRUCTION t LATEST EDITION),
-
Fa.
--
SPECIFIED
AS FOLLOWS:
W
EXCAVATED BANK OR SHEETING
w •
BEDDING a
SEWING A
ROCKS GREATEII THAN (c" IN ANY
DIMENSION WILL NOT BE PERMITTED
BEDDING MATERIAL BELOW SO'TTOM OF
z =
IN r
IN BACKFILL PLACED GETWEEN 1'
RCP SMALL BE I/12D' FOR PIPES 39'
AND LARGER IN DIAMETER. AND 4- FOR
..• ..
GROVE THE 'TOP Of ANY PIPE OR BOY,
RCP LESS THAN 39' IN DIAMETER.
�Np 1' IJE LQW YAVEIVIEUT SUI3GRADE.
IN NO CASE SHALL IT BE LESS THAN
1" BELOW ANY BELL OR COLLAR
EXCAVATION TO THIS
4' WN. LINE PERMITTED17.
ROCKS GREATER 11�Ru 21 N IN ANY
DIMEMSIDN WILL NOT BE PERMITTED
CASE
3
IN SACKF ILL PLACED W ITU IM 1' OF
REINFORCED
CONCRETE PIPE
PAVEMEMT SURGRADE,
CASE 3 BEDDING a BACKFILL AROUND RCP (LOAD FACTOR 1.01
(e) W AT SPRING LINE SMALL NOT BE LESS THAN THE FOLLOWING: G• FOR
RCP 60' OR LESS IN DIAMETER. 100 FOR RCP 63' TO IDB' INCLUSIVE IN
DIAMETER. AND 12' FOR PIPE LARGER THAN 104' IN DIAMETER. THESE
DIMENSIONS MAY INCLUDE THE THICKNESS OF ANY SHEETING.
(►) INHERE COVER IS 10'-0' OR LESS. W MEASURED AT THE TOP OF THE RCP MAY
BE ANY DIMENSION GREATER THAN THE ABOVE SPECIFIED MINIMUM. UNLESS
OTHERWISE SPECIFIED ON THE PROJECT DRAWINGS.
(e) WHERE COVER IS GREATER THAN 10'-00. W MEASURED AT TOP Of PIPE SHALL
NOT BE GREATER THAN 10' FOR RCP TOB' IN DIAMETER OR LESS. OR Ir
FOR RCP OVER 100' IN DIAMETER UNLESS THE CONTRACTOR AT HIS OWN
EXPENSENCLUDE TME TNES ESS I BEDDING OR ANY STRONGER RCP.. THESE DIMENSIONS
(A SCREED BEDDING A TO FIT CURVATURE AND (GRADE Of RCP. TYPE Of SCREED
AND THE METHOD OF USE TO BE APPROVED BY THE ENGINEER.
KTIE
1. USE CASE 3 FOR RCP. CASE 2 FOR VITRIFIED CLAY. PLASTIC AND S. WHERE CALLED FOR BY THE DEPARTMENT'S STRUCTURAL DESIGN
P00M CONCRETE PIPE UNLESS OTHERWISE SPECIFIED OR SHOWN ON MANUAL. OR WHERE SPECIFIED ON THE PROJECT DRAWINGS.
THE PROJECT DRAWINGS. CONCRETE SHALL BE 420-C-2000.
2. FOR RCP 270 IN DIAMETER AND LARGER. BEDDING A SMALL BE COM- G- CONCRETE BACKFILL SHALL BE POURED FROM WALL TO WALL OF
POSED OF SAND, 3/4. OR 1/2' CRUSHED ROCK. NO. 3 OR 4 CONCRETE THE TRENCH AND FROM THE BOTTOM OF THE TRENCH TO A MINIMUM
AGGREGATE OR GRAVEL OR OTHER GRANULAR MATERIAL AS SPECIFIED DEPTH OF 4. OVER THE TOP OF THE PIPE.
AND SHALL HAVE A SAND EOUIVALENT VALUE OF NOT LESS THAN 20
UNLESS OTHERWISE APPROVED BY THE ENGINEER. 7. CONCRETE BACKFILL SHALL BE PROVIDED FOR RCP 1B' IN DIAMETER
OR LESS WHERE THE COVER IS EOUAL TO OR LESS THAN 24', FOR
3. WHERE RCP SMALLER THAN 27' IN DIAMETER IS USED. THE REOUIRE- RCP GREATER THAN 21' IN DIAMETER BUT LESS THAN 39' WHERE
MENTS IN NOTE 2 SHALL BE MET EXCEPT THAT A GRADATION NO THE COVER IS LESS THAN Is' AND FOR RCP 39' OR GREATER WHERE
COARSER THAN NO. 4 CONCRETE AGGREGATE OR NO COARSER THAN THE COVER IS LESS THAN 12'. CONCRETE BACKFILL SMALL BE IN
1/2' CRUSHED ROCK SHALL BE USED. ACCORDANCE WITH NOTES 3 AND 6.
4. BEDDING B SHALL BE COMPOSED OF SAND OR OTHER GRANULAR S. 3 -EDGE BEARING TEST LOAD FACTOR I.O.
MATERIAL AND SHALL HAVE A SAND EOUIVALENT VALUE NOT LES=,
THAN 20 AS SPECIFIED IN SUBSECTION 306-1.2.1 AS AMENDED UN-
LESS OTHERWISE APPROVED BY THE ENGINEER AND SHALL BE COM-
PLETED PRIOR TO PLACING THE BALANCE OF THE BACKFILL. THE
MAXIMUM ROCK SIZE FOR BEDDING B SHALL BE 4' IN THE GREATEST
DIMENSION. NESTING OF ROCKS WILL NOT BE PERMITTED.
LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
STANDARD PLAN
PIPE BEDDING IN TRENCHES - 3080-0