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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALENOV., 2000
DETAIL 300-01 REB
STORM DRAINAGE
12"
DIA
ME
TE
R
1/4 DIA. (4" MIN.)
BEDDING MATERIAL
COMPACTED BACKFILL
1/4 DIA. (4" MIN.)
BEDDING MATERIAL
COMPACTED BACKFILL
FLEXIBLE PIPE
CONCRETE PIPE
TYPICAL PIPE BEDDING
FLEX
IBLE
PIP
E
1/2
DIA
ME
TE
R
CO
NCRETE
PIP
E
C
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALEFEB., 2001
DETAIL 300-02 REB
STORM DRAINAGE
STANDARD MANHOLE
5’
MIN
. D
EP
TH
VA
RIA
BL
E3
0"
MIN
.
48
" M
AX
.
16
" M
AX
.
18"
MA
X.
18"
MA
X.
4"
ASTM C-478
ECCENTRIC CONE
GROUT SHIPLAP JOINT
INSIDE AND OUT
ASTM C-478
MANHOLE SECTION
CONCRETE ADJUSTMENT
SHIM GROUTED
INSIDE AND OUT
6" SEE NOTE
POURED CONCRETE
BASE
GROUT BASE TO CONE
INSIDE AND OUT
MANHOLE
RUNGS
12" O.C.
FINISH GRADE
SLOPE 1"/FT.
POURED INVERT
PRECAST MANHOLE
BASE
ALTERNATE BASENOTE: MINIMUM INSIDE DIAMETER OF
MANHOLE SHALL BE AS FOLLOWS.
PIPE SIZE MIN. MANHOLE
DIAMETER
48"
60"
72"
24"RING AND COVER- 400 Lb.
DENVER HEAVY OR
APPROVED EQUAL
REINFORCEMENT
#4 REBAR @ 8" O.C., E.W.
8" MIN.
8" MIN.
8" MIN. / 12" MAX.
12" BEDDING
15" TO 36"
42" TO 48"
54" TO 60"
MAX. 400’ APART FOR 15" TO 36" LINES
MAX. 500’ APART FOT 42" > LINES.
REVISED 11/2003
STORM SEWERWARNING - CONFINED SPACE
ENTRY PERMIT REQUIRED
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALENOV., 2000
DETAIL 300-03 REB
STORM DRAINAGE
STANDARD MANHOLE COVER
PROFILE
TOP VIEW BOTTOM VIEW
PICK HOLE
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALEFEB., 2001
DETAIL 300-04 REB
STORM DRAINAGE
5’
10’
15
’
8"
JOINT
JOINT
ACCESS COVER
(REQUIRED FOR ALL
INLETS LONGER
THAN 10’)
JETTING
MANHOLE
TYPE R INLET ACCESS LOCATION
NOTE:
1. NO INLET WITH DROP
BOXES ARE ALLOWED
IN LONGMONT.
2. STORM SEWER WILL
ENTER INLET AT
DOWN STREAM END.
3. NO PIPES SHALL ENTER
INTO THE CORNER OF
THE INLET.
1’ MINIMUM
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALENOV., 2000
DETAIL 300-05 REB
STORM DRAINAGE
MANHOLE COVER LOCATION
NOTES:
1. THE MANHOLE COVER SHALL BE LOCATED OVER THE DOWNSTREAM
STORM SEWER PIPE EXITING THE MANHOLE.
2. THIS ALLOWS FOR THE JET NOZZLE TO BE INSERTED DOWN THE
MANHOLE COVER, MAKE ONE 90^ BEND AND ENTER THE UPSTREAM
PIPE LINE. IT IS FED INTO THE PIPE TO THE UPSTREAM MANHOLE.
THE WATER JET IS TURNED ON AND PULLED BACK THROUGH THE
PIPELINE. THE DIRT AND WATER ARE VACUUMED OUT OF THE
MANHOLE INTO A STORAGE TANK.
3. IF TWO (OR MORE) PIPES ARE ENTERING THE MANHOLE, THE COVER
SHALL BE LOCATED OPPOSITE OF THE TWO PIPES, THE LARGER PIPE
BEING THE MORE IMPORTANT.
4. STEP ALIGNMENT SHALL BE COORDINATED WITH THE CITY INSPECTOR FOR
PIPES GREATER THAN 36".
REVISED 11/03
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALEFEB., 2001
REB
STORM DRAINAGE
36" 6 5/8 " 4 1/2 " 7880# 15" 63" 33 3/4 " 96 3/4 " 72" 4 3/4 " 6 1/16 " 37" 24 1/16 " 20" NA
12"
15"
18"
24"
30"
42"
48"
54"
60"
72"
4"
4"
4 1/2 "
5 1/2 "
5 3/4 "
4 1/2 "
5"
6 1/4 "
6 3/4 "
7"
3 3/4 "
3 3/4 "
4"
4 1/4 "
4 1/4 "
4 5/8 "
4 5/8 "
4 1/4 "
4 1/4 "
5 1/2 "
530#
740#
2440#
3260#
4200#
5380#
6550#
8040#
8750#
12520#
4"
6"
9"
9 1/2 "
12"
21"
24"
27"
30"
34"
24"
27"
27"
43 1/2 "
54"
63"
72"
65"
60"
78"
45 3/8 "
42 1/2 "
46"
29 3/4 "
19"
29"
20"
27"
32"
21"
73 1/8 "
69 1/2 "
73"
73 1/4 "
73"
92"
92"
92"
92"
99"
24"
30"
36"
48"
60"
78"
84"
90"
96"
108"
2 3/4 "
3"
3 1/4 "
3 3/4 "
4 1/4 "
NA
NA
NA
NA
NA
3 1/8 "
4"
3 3/4 "
4 3/4 "
5 3/4 "
NA
NA
NA
NA
NA
13"
16"
19"
25"
31"
43"
48 1/2 "
55"
61"
73"
10 1/16 "
12 1/2 "
15 1/2 "
161 1/16 "
18 5/16 "
27 1/4 "
28 1/8 "
32 7/8 "
36 3/4 "
38 5/8 "
9"
11"
12"
14"
15"
22"
22"
24"
24"
24"
NA
NA
NA
NA
NA
13"
11"
11"
11"
7 3/4 "
DIA
ME
TE
R
WA
LL
TH
ICK
NE
SS
JOIN
T
DE
PT
H
WE
IGH
T
A
FL
AIR
LE
NG
TH
B
BA
RR
EL
LE
NG
TH
C
LA
Y
LE
NG
TH
D
FL
AIR
WID
TH
E F G H R-1
R-2
SK
IRT
FF
WALL
SKIRT
E
WALL
WA
LL
WA
LL
WA
LL
WA
LL
WA
LL
WA
LL
WA
LL
GA
DIA
.
DIA
.
H HA
R-2R-2
DIA. DIA.
1 1/2 " R1 1/2 " R
D D
C C BB
C/L C/L
C/L
C/L
A AA A
PLAN
SEC. A-A
END VIEW
DETAIL 300-06A
1/2 " TAPER
PER SIDE
JOIN
T
DE
PT
H
JOIN
T
DE
PT
H
STANDARD FLARED END SECTION
C
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALEFEB., 2001
REB
STORM DRAINAGE
48" 5 1/2 " 7870# 21" 84" 51 19/32 " 14"
18"
24"
30"
36"
42"
54"
2 3/4 "
3 1/4 "
4 1/2 "
2450#
4840#
6456#
9990#
8"
11 1/2 "
15 3/4 "
25 1/2 "
36"
48"
60"
72"
78"
90"
6 3/32 "
10 1/4 "
12 5/8 "
14 9/32 "
19 15/16 "
32 13/16 "
39 3/8 "
45 29/32 "
12"
13"
16"
WE
IGH
T
A
FL
AIR
LE
NG
TH
B
BA
RR
EL
LE
NG
TH
C
LA
Y
LE
NG
TH
D
FL
AIR
WID
TH
E
PLAN
SEC. A-A
END VIEW
DETAIL 300-06B
WALL
WALL
E
R 3
D
C B
WALL
RIS
E
A
SPAN
C/L
C/L
R-1
R-2
14"X23" 1300# 2’-4" 3’-9" 6’-1"
EQ
UIV
EL
EN
T
CIR
CU
LA
R P
IPE
DIA
ME
TE
R
NO
MIN
AL
INS
IDE
RIS
E X
SP
AN
WA
LL
TH
ICK
NE
SS
R -
1
R -
2
R -
3
6"
19"X30" 1675# 8 1/2 " 3’-4" 2’-9" 6’-1" 8 7/32 " 26 1/4 " 7"
24"X38" 3 3/4 " 9 1/2 " 4’-6" 1’-6" 6’-0" 9"
29"X45" 5’-1" 3’-0" 8’-1"
34"X53" 5" 5’-0" 3’-0" 8’-0"
38"X60" 5’-0" 3’-0" 8’-0" 15 7/8 "
43"X68" 6" 5’-0" 3’-0" 8’-0" 18 21/32 " 58 19/32 "
ELLIPTICAL FLARED END SECTION
A A
C
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D
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OF ONG
MO
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALEFEB., 2001
REB
STORM DRAINAGE
36" 18" 8.5" 58"
12"
15"
18"
24"
30"
42"
48"
54"
60"
72"
9"
10"
12"
15"
21"
24"
24"
5.5"
9.5"
21"
21"
21"
6"
8"
21"
27"
28"
40"
52"
64"
70"
84"
132"
132"
30"
28"
31"
75"
84"
108"
108"
D
DETAIL 300-06C
END VIEW
PLAN
SIDE VIEW
A
B
W
C (
# O
F B
AR
S)
D (
SP
AC
ING
)L
LOCKING PIN
HINGE PIN
PIP
E
DIA
ME
TE
R
B C W L
11" 3
3 6.5"
6.5" 3
5 8" 47.5"
12.5" 5 9" 59.75"
15.5" 7 71.25"
18.5" 7 9"
24" 21.5" 9 8" 82.75"
14 6"
22 6"
24" 22 6"
7.5"
FLARED END SECTION TRASH RACK
(CIRCULAR PIPE)
A
C
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D
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALEFEB., 2001
REB
STORM DRAINAGE
36"
12"
15"
18"
24"
30"
42"
48"
54"
60"
72"
DETAIL 300-06D
END VIEW
PLAN
PIP
E
DIA
ME
TE
R
R S T
SEE HOLE
CROSS SECTION
S BRACKET
3/4 " X "T"MACHINE
BOLT WITH FLAT
AND LOCK WASKER
R
1 1/
4 "
4"
1" 0 HOLE
(TYPICAL 4)
HOLE CROSS SECTION
8" 5.25" 4.5"
9.75" 3.5" 4.75"
11.5" 5" 5"
15" 6.5" 5.5"
18.5" 8" 6"
22" 9.5" 6.5"
25.5" 11" 7"
29" 12.75" 7.5"
33.25" 14.5" 8.5"
36.75" 16.25" 9"
43.75" 19.75" 11"
TRASH RACK MOUNTING DETAIL
(CIRCULAR FLARED END SECTION)
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALEFEB., 2001
REB
STORM DRAINAGE
48"
18"
24"
30"
36"
42"
54"
END VIEW
DETAIL 300-06E
EQ
UIV
EL
EN
T
CIR
CU
LA
R P
IPE
DIA
ME
TE
R
B
A
W
C (
# O
F B
AR
S)
D (
SP
AC
ING
)
LOCKING PIN
HINGE PIN
L
SIDE VIEW
PLAN VIEW
FLARED END SECTION TRASH RACK
(ELLIPTICAL PIPE)
60"
SP
AN
RIS
E
A B C D W L
23" 14" 15" 12" 4 9.5" 38" 30"
30" 19" 20" 17" 4 8.5" 40" 39.5"
38" 24" 25" 21.75" 5 9" 52" 55"
45" 29" 30" 26.75" 6 9.5" 64" 62.75"
53" 34" 35" 31.5" 6 9.5" 64" 65"
60" 38" 39" 36.38" 7 9" 70" 67"
68" 43" 45" 42" 10 10" 80" 69"
76" 48" 50" 47" 10 10" 90" 71"
C
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALEFEB., 2001
REB
STORM DRAINAGE
48"
18"
24"
30"
36"
42"
54"
END VIEW
DETAIL 300-06F
EQ
UIV
EL
EN
T
CIR
CU
LA
R P
IPE
DIA
ME
TE
R
PLAN VIEW
60"
SP
AN
RIS
E
R S T
23" 14"
30" 19"
38" 24"
45" 29"
53" 34"
60" 38"
68" 43"
76" 48"
HOLE CROSS SECTION
23" 7.75" 4.25"
29" 10.25" 5.75"
36.25" 12.75" 6.25"
43.5" 15.25" 7"
50.5" 17.75" 7.5"
57.63" 20" 8"
63" 23" 8.5"
70" 26" 9"
SBRACKET
3/4 " X"T"MACHINE
BOLT WITH FLAT
AND LOCK WASHER
R
4"
1 1/
4 "
1"0 HOLE
(TYPICAL 4)
SEE HOLE
CROSS SECTION
TRASH RACK MOUNTING DETAIL
(ELLIPTICAL FLARED END SECTION)
C
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALE
REB
Drainage Criteria Manual (V.3)
15’
SILT FENCE
(MAXIMUM)
2’ T
O 3’
4"FLOW
H
-NTS-
SILT FENCE INSTALLATION
NOTE: EROSION CONTROL MEASURES
LANDSCAPING IS COMPLETED,
SHALL BE MAINTAINED UNTIL
FLOW
FABRIC MATERIAL
(ACHORED IN TRENCH)
4"x4" TRENCH
COMPACTED
BACKFILL
STEEL OR 2"x4" WOOD POST
(ANCHORED TO FABRIC)
H
-NTS-
SECTION
4"
SF
OR AS DIRECTED BY LOCAL
JURISDICTION
1/2
H
(12" M
IN
)
1/2
H
(12" M
IN
.)
STORM DRAINAGE
SILT FENCE EROSION BARRIER
SEPTEMBER 2005
Urban Drainage and Flood Control District
DETAIL 300-07
STD. 50 LB. STRAW BALE2"x2" STAKE
4" (MIN)
BALE WIDTH
FLOW
STB
SHALL BE MAINTAINED UNTIL
LANDSCAPING IS COMPLETED,
NOTE: EROSION CONTROL MEASURES
-NTS-
-NTS-
-NTS-
SECTION
STRAW BALE INSTALLATION
TRENCH EXCAVATION
50 LB. STRAW BALE
2"x2" STAKE
BACKFILL
COMPACTED
FLOW
6" (
MIN
)
JURISDICTION
OR AS DIRECTED BY LOCAL
C
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALE
STRAW BALE EROSION BARRIER
REB
SEPTEMBER, 2005
Urban Drainage and Flood Control District
Drainage Criteria Manual (V.3)
DETAIL 300-08
Drainage Criteria Manual (V.3)
SIDEW
ALK
PU
BLIC
RO
AD
WA
Y
CDOT SECT. #703, A
ASHTO #3 COARSE A
GGREGATE
CE
SECTION A-A
-NTS-
50 FT. (MIN)
20 FT. (MIN)
9" (M
IN)
A
A
CDOT SECT. #703, AASHTO #3 COARSE AGGREGATE
GEOTEXTILE MEMBRANE
INSTALL ROCK FLUSH
WITH TOP / WALK
9" (MIN)
NOTE: EROSION CONTROL MEASURES SHALL
BE MAINTAINED AT ALL TIMES AS
DIRECTED BY THE LOCAL JURISDICTION
CONSTRUCTION.
UPON COMPLETION OF
ALL ROCK TO BE REMOVED1.
NOTES
2. PUBLIC ROADWAY TO BE
KEPT CLEAN AND FREE OF
MUD, DIRT AND DEBRI AT
ALL TIMES.
COMPACTED
SUBGRADE
NON-WOVEN G
EOFABRIC BLANKET BETW
EEN SOIL A
ND ROCK
Urban Drainage and Flood Control District
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PUBLIC WORKS DIVISION SCALE:DATE: NOT TO SCALE SEPTEMBER, 2005
STORM DRAINAGE
CONSTRUCTION STAGING PAD
REBDETAIL 300 09