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North Carolina Storm Water
PCNCDOT2019A
North Carolina Drainage Inlets & Endwalls
Use
Precast drainage inlets are typically used for storm drain systems in lieu of built in place
inlets.
Sizes
Precast drainage inlets are available in many sizes from small area drains to large inlets or
combination inlet / junction boxes, both in rectangular designs as well as circular structures
with diameters of 36 inch through 144 inch.
Application
Precast drainage inlets may be used for the following:
Yard Inlets
Curb Inlets
Catch Basins
Traffic areas
Parking lots
Median inlets
Joints
The following joints may be available for precast drainage inlets:
pre-formed mastic or butyl gasket
Mortar joints
Applicable Specifications
The following specifications apply to North Carolina precast drainage inlets:
ASTM C478 / AASHTO M199 - Precast Reinforced Concrete Manhole Sections
ASTM C 913 - Precast Concrete Water and Wastewater Structures
ASTM C990 - Joints for Concrete Pipe, Manholes, and Precast Box Sections Using Preformed
Flexible Joint Sealants
North Carolina Department of Transportation standards and specifications
TITLE
12-05-18
DATE
Precast 2'-2" x 3'-0" Standard Catch Basin
NCDOT 840.02
North Carolina Drainage Inlets
20181205TED02
Isometric View
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Frame, grate and hood to be as per NCDOT standards 840.03, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
3
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(10)
(8)
6
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TITLE
12-03-18
DATE
Precast 2'-2" x 3'-0" x 2'-9" Catch Basin-Knockout
Box with Corner Opening NCDOT 840.45
North Carolina Drainage Inlets
20181203TED03
Isometric View
Notes
1) This design is intended for precast structures produced by CP&P only, not
for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65
minimum. Cover Cc of 1
1
2" minimum unless otherwise noted.
4) Opening 8" maximum larger than pipe outside diameter. Additional
reinforcement around opening.
5) For use with pipe skewed 0 to 45 degrees. Opening to be adjusted
accordingly.
6) Contractor to consult VDOT EW-1APC standards for installation details.
7) All exposed 90° edges chamfered
3
4 inch.
8) Length and reinforcement may be increased as necessary for handling
considerations.
Notes
1) This design is intended for precast structures produced by CP&P only, not for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar or WWR conforming to the requirements of
ASTM A1064, grade 65 minimum.
4) All exposed edges to be chamfered.
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth. Knockout base typically without steps.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Frame, grate and hood to be as per NCDOT standards 840.03, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
11) Corner Opening Left side shown, right side opposite.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
(9)
(6)
(10)
(8)
26"Ø Corner Opg
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TITLE
12-03-18
DATE
Precast 2'-2" x 3'-0" x 2'-9"
Catch Basin-Knockout Box NCDOT 840.45
North Carolina Drainage Inlets
20181203TED02
Isometric View
Notes
1) This design is intended for precast structures produced by CP&P only, not
for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65
minimum. Cover Cc of 1
1
2" minimum unless otherwise noted.
4) Opening 8" maximum larger than pipe outside diameter. Additional
reinforcement around opening.
5) For use with pipe skewed 0 to 45 degrees. Opening to be adjusted
accordingly.
6) Contractor to consult VDOT EW-1APC standards for installation details.
7) All exposed 90° edges chamfered
3
4 inch.
8) Length and reinforcement may be increased as necessary for handling
considerations.
Notes
1) This design is intended for precast structures produced by CP&P only, not for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar or WWR conforming to the requirements of
ASTM A1064, grade 65 minimum.
4) All exposed edges to be chamfered.
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth. Knockout base typically without steps.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Frame, grate and hood to be as per NCDOT standards 840.03, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
4
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(
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3
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(
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(9)
(10)
(6)
(8)
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TITLE
12-03-18
DATE
Precast 2'-2" x 3'-0" x 3'-8"
Catch Basin-Knockout Box NCDOT 840.45
North Carolina Drainage Inlets
20181203TED04
Isometric View
Notes
1) This design is intended for precast structures produced by CP&P only, not
for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65
minimum. Cover Cc of 1
1
2" minimum unless otherwise noted.
4) Opening 8" maximum larger than pipe outside diameter. Additional
reinforcement around opening.
5) For use with pipe skewed 0 to 45 degrees. Opening to be adjusted
accordingly.
6) Contractor to consult VDOT EW-1APC standards for installation details.
7) All exposed 90° edges chamfered
3
4 inch.
8) Length and reinforcement may be increased as necessary for handling
considerations.
Notes
1) This design is intended for precast structures produced by CP&P only, not for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar or WWR conforming to the requirements of
ASTM A1064, grade 65 minimum.
4) All exposed edges to be chamfered.
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth. Knockout base typically without steps.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Frame, grate and hood to be as per NCDOT standards 840.03, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
(9)
(6)
(10)
V
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TITLE
12-03-18
DATE
Precast 2'-2" x 3'-0" x 5'-0"
Catch Basin-Knockout Box NCDOT 840.45
North Carolina Drainage Inlets
20181203TED05
Isometric View
Notes
1) This design is intended for precast structures produced by CP&P only, not
for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65
minimum. Cover Cc of 1
1
2" minimum unless otherwise noted.
4) Opening 8" maximum larger than pipe outside diameter. Additional
reinforcement around opening.
5) For use with pipe skewed 0 to 45 degrees. Opening to be adjusted
accordingly.
6) Contractor to consult VDOT EW-1APC standards for installation details.
7) All exposed 90° edges chamfered
3
4 inch.
8) Length and reinforcement may be increased as necessary for handling
considerations.
Notes
1) This design is intended for precast structures produced by CP&P only, not for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar or WWR conforming to the requirements of
ASTM A1064, grade 65 minimum.
4) All exposed edges to be chamfered.
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth. Knockout base typically without steps.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Frame, grate and hood to be as per NCDOT standards 840.03, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
(9)
(6)
(10)
(8)
V
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TITLE
12-05-18
DATE
Precast 3'-0" x 3'-0"/2'-2" x 3'-0" Standard
Catch Basin NCDOT 840.02
North Carolina Drainage Inlets
20181205TED03
Isometric View
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Frame, grate and hood to be as per NCDOT standards 840.03, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
(9)
(10)
(6)
(8)
Reducer/Adapter
8
"
4
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(
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)
3
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(
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)
4
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(
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3
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(
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6
"
V
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s
2
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t
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5
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B
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6
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6
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4
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3
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3
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2
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TITLE
12-06-18
DATE
Precast 3'-0" x 5'-0" Open Throat
Catch Basin NCDOT 840.04
North Carolina Drainage Inlets
20181206TED02
Isometric View
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Ring and cover to be as per NCDOT standards 840.54, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
(9)
Flattop
As Required
As Required
(7)
Flattop
As Required
(6)
(10)
(8)
4
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0
"
(
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)
3
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0
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(
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5
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(
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6
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0
"
(
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6
"
6
"
V
a
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s
2
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0
"
t
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5
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B
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V
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1
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t
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5
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R
i
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8
"
6
1
2
"
8
"
6
1
2
"
6
"
Open Throat
As Required
6
'
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0
"
4
'
-
0
"
TITLE
12-05-18
DATE
Precast 4'-0" x 4'-0"/2'-2" x 3'-0" Standard
Catch Basin NCDOT 840.02
North Carolina Drainage Inlets
20181205TED04
Isometric View
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Frame, grate and hood to be as per NCDOT standards 840.03, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
3
'
-
2
"
(
O
D
)2
'
-
2
"
(
I
D
)
4
'
-
0
"
(
O
D
)
3
'
-
0
"
(
I
D
)
8
"
5
'
-
0
"
(
O
D
)
4
'
-
0
"
(
I
D
)
5
'
-
0
"
(
O
D
)
4
'
-
0
"
(
I
D
)
6
"
6
"
V
a
r
i
e
s
2
'
-
0
"
t
h
r
u
5
'
-
0
"
B
a
s
e
Reducer/Adapter
(9)
(6)
(8)
(10)
6
"
V
a
r
i
e
s
1
'
-
0
"
t
h
u
r
5
'
-
0
"
R
i
s
e
r
3
6
"
O
p
g
2
4
"
O
p
g
TITLE
12-05-18
DATE
Precast 5'-0" x 5'-0"/2'-2" x 3'-0" Standard
Catch Basin NCDOT 840.02
North Carolina Drainage Inlets
20181205TED05
Isometric View
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Frame, grate and hood to be as per NCDOT standards 840.03, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
(9)
(6)
Reducer/Adapter
(10)
(8)
3
'
-
2
"
(
O
D
)2
'
-
2
"
(
I
D
)
4
'
-
0
"
(
O
D
)
3
'
-
0
"
(
I
D
)
8
"
6
"
6
'
-
0
"
(
O
D
)
5
'
-
0
"
(
I
D
)
6
'
-
0
"
(
O
D
)
5
'
-
0
"
(
I
D
)
6
"
6
"
V
a
r
i
e
s
2
'
-
0
"
t
h
r
u
6
'
-
0
"
B
a
s
e
V
a
r
i
e
s
1
'
-
0
"
t
h
u
r
5
'
-
0
"
R
i
s
e
r
3
6
'
O
p
g
2
4
"
O
p
g
TITLE
12-10-18
DATE
Precast 5'-0" x 5'-0"/ 3'-0" x 5'-0" Open
Throat Catch Basin NCDOT 840.04
North Carolina Drainage Inlets
20181210TED01
Isometric View
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Ring and Cover to be as per NCDOT standards 840.54, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
Flattop
As Required
(9)
(7)
As Required
Flattop
As Required
(6)
(8)
(10)
Reducer/Adapter
6
"
6
"
V
a
r
i
e
s
2
'
-
0
"
t
h
r
u
6
'
-
0
"
B
a
s
e
3
6
"
O
p
g
6
0
"
O
p
g
8
"
6
1
2
"
6
1
2
"
8
"
Open Throat
As Required
V
a
r
i
e
s
1
'
-
0
"
t
h
u
r
5
'
-
0
"
R
i
s
e
r
5
'
-
0
"
(
I
D
)
6
'
-
0
"
(
O
D
)
6
'
-
0
"
(
O
D
)
5
'
-
0
"
(
I
D
)
8
"
6
"
6
'
-
0
"
4
'
-
0
"
TITLE
12-06-18
DATE
Precast 6'-0" x 6'-0"/2'-2" x 3'-0" Standard
Catch Basin NCDOT 840.02
North Carolina Drainage Inlets
20181206TED01
Isometric View
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Frame, grate and hood to be as per NCDOT standards 840.03, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
4
'
-
0
"
(
O
D
)
3
'
-
2
"
(
O
D
)2
'
-
2
"
(
I
D
)
3
'
-
0
"
(
I
D
)
V
a
r
i
e
s
1
'
-
0
"
t
h
u
r
5
'
-
0
"
R
i
s
e
r
8
"
6
"
6
"
V
a
r
i
e
s
2
'
-
0
"
t
h
r
u
7
'
-
0
"
B
a
s
e
6
'
-
0
"
(
I
D
)
7
'
-
0
"
(
O
D
)
6
'
-
0
"
(
I
D
)
7
'
-
0
"
(
O
D
)
(9)
(6)
Reducer/Adapter
(10)
(8)
6
"
3
6
"
O
p
g
2
4
"
O
p
g
TITLE
12-10-18
DATE
Precast 6'-0" x 6'-0"/ 3'-0" x 5'-0" Open
Throat Catch Basin NCDOT 840.04
North Carolina Drainage Inlets
20181210TED02
Isometric View
Notes
1) Design Specifications per current ASTM C913 standards for "Precast Concrete Water and Wastewater Structures".
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design to conform to the requirements of ASTM C890 and shall utilize grade 60 re-bar conforming to the
requirements of ASTM A615 or WWR conforming to the requirements of ASTM A185 or both.
4) Additional reinforcing at opening.
5) Designed for H-20-44 loading.
6) Steps provided @ 12" spacing, aligned vertically for structures over 3'-6" in depth.
7) Contractor to adjust to grade as required per NCDOT specifications.
8) Pipe to be installed by contractor as per NCDOT specifications for grout joint connections.
9) Ring and Cover to be as per NCDOT standards 840.54, supplied by CP&P or customer, installed by contractor.
10) Joints to be sealed with preformed butyl rubber joint sealant conforming to the requirements of ASTM C990,
or mortar as per NCDOT requirements.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
6
"
6
"
V
a
r
i
e
s
2
'
-
0
"
t
h
r
u
7
'
-
0
"
B
a
s
e
7
'
-
0
"
(
O
D
)
6
'
-
0
"
(
I
D
)
6
'
-
0
"
(
I
D
)
7
'
-
0
"
(
O
D
)
3
6
"
O
p
g
6
0
"
O
p
g
8
"
V
a
r
i
e
s
1
'
-
0
"
t
h
u
r
5
'
-
0
"
R
i
s
e
r
8
"
6
1
2
"
8
"
6
1
2
"
(8)
(10)
Reducer/Adapter
Flattop
As Required
As Required
(7)
(9)
Flattop
As Required
(6)
6
"
Open Throat
As Required
6
'
-
0
"
4
'
-
0
"
TITLE
11-20-18
DATE
Precast Cross & Parallel Pipe End Section
NCDOT 310.02/03
North Carolina End Sections/Endwalls
20181120TED03
Section View
Isometric View
Notes
1) Endwall to be placed at the end of underdrain outlet and installed
perpendicular to roadway and flush with slope.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65 minimum.
4) Endwall accepts rigid nonperforated, smooth-bore pipe, 70 psi tested conforming
to the requirements of ASTM D2412.
5) The expanded steel mesh extends a minimum of 1" above the pipe OD.
6) The slot is for expanded steel mesh that allows easy removal for cleanout purposes.
7) Expanded steel mesh (rodent screen) to be galvanized with openings approximately
1
2" x 1" and weighs approximately 0.82 lbs psf conformimg to the requirements of
ASTM A123.
Plan View
Notes
1) This design is intended for precast structures produced by CP&P only, not
for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65
minimum. Cover Cc of 1
1
2" minimum unless otherwise noted.
4) Opening 8" maximum larger than pipe outside diameter. Additional
reinforcement around opening.
5) For use with pipe skewed 0 to 45 degrees. Opening to be adjusted
accordingly.
6) Contractor to consult VDOT EW-1APC standards for installation details.
7) All exposed 90° edges chamfered
3
4 inch.
8) Length and reinforcement may be increased as necessary for handling
considerations.
Notes
1) This design is intended for precast structures produced by CP&P only, not for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar or WWR conforming to the requirements of
ASTM A1064, grade 65 minimum.
4) All exposed edges to be chamfered.
Parallel Pipe End Section
Slope Pipe ID Pipe OD
L
6:1 15'' 24" 9'-4"
6:1 18" 26" 9'-4"
L 8"
6"
4"
5"
6" Max
(4)
Pipe
OD
Pipe
ID
3" Min
3" Min
Cross Pipe End Section
Slope Pipe ID Pipe OD
L
4:1 15'' 24" 6'-6"
4:1 18" 26" 6'-6"
Slope
TITLE
11-20-18
DATE
Precast Endwall for 12"Ø to 48"Ø Double
Circular Pipe NCDOT 838.01
North Carolina End Sections/Endwalls
20181120TED02
Isometric View
Notes
1) This design is intended for precast structures produced by CP&P only, not
for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65
minimum. Cover Cc of 1
1
2" minimum unless otherwise noted.
4) Opening 8" maximum larger than pipe outside diameter. Additional
reinforcement around opening.
5) For use with pipe skewed 0 to 45 degrees. Opening to be adjusted
accordingly.
6) Contractor to consult VDOT EW-1APC standards for installation details.
7) All exposed 90° edges chamfered
3
4 inch.
8) Length and reinforcement may be increased as necessary for handling
considerations.
Notes
1) This design is intended for precast structures produced by CP&P only, not for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar or WWR conforming to the requirements of
ASTM A1064, grade 65 minimum.
4) All exposed edges to be chamfered.
L
B
A
A
9
"
H
D
D
M
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L M A
12'' 20" 16" 18" 4'-0" 2'-0" 8'-2" 2'-2" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 8'-2" 2'-2" 8"
18" 26" 22" 24" 4'-0" 2'-0" 8'-7" 2'-7" 8"
24" 32" 28" 30" 4'-0" 2'-0" 11'-5" 3'-5" 8"
30" 42" 36" 36" 5'-0" 2'-6" 13'-3" 4'-3" 8"
36" 48" 42" 42" 5'-4" 2'-8" 16'-0" 5'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 18'-5" 5'-10" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 21'-0" 6'-8" 10"
(4)
TITLE
11-20-18
DATE
Precast Endwall for 12"Ø to 48"Ø Single
Circular Pipe NCDOT 838.01
North Carolina End Sections/Endwalls
20181120TED01
Isometric View
Notes
1) This design is intended for precast structures produced by CP&P only, not for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar or WWR conforming to the requirements of
ASTM A1064, grade 65 minimum.
4) All exposed edges to be chamfered.
Notes
1) This design is intended for precast structures produced by CP&P only, not
for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65
minimum. Cover Cc of 1
1
2" minimum unless otherwise noted.
4) Opening 8" maximum larger than pipe outside diameter. Additional
reinforcement around opening.
5) For use with pipe skewed 0 to 45 degrees. Opening to be adjusted
accordingly.
6) Contractor to consult VDOT EW-1APC standards for installation details.
7) All exposed 90° edges chamfered
3
4 inch.
8) Length and reinforcement may be increased as necessary for handling
considerations.
Standard Dimensions
Pipe ID D (RCP) D (DIP) D (CMP
H B L A
12'' 20" 16" 18" 4'-0" 2'-0" 6'-0" 8"
15" 26"
N/A
20" 4'-0" 2'-0" 6'-0" 8"
18" 26" 22" 24" 4'-0" 2'-0" 6'-0" 8"
24" 32" 28" 30" 4'-0" 2'-0" 8'-0" 8"
30" 42" 36" 36" 5'-0" 2'-6" 9'-0" 8"
36" 48" 42" 42" 5'-4" 2'-8" 11'-0" 10"
42" 54"
N/A
48" 6'-0" 3'-0" 12'-8" 10"
48" 62"
N/A
54" 6'-8" 3'-4" 14'-4" 10"
L
B
H
D
A
9
"
(4)
TITLE
11-21-18
DATE
Precast Underdrain Pipe Splash Pad for 4"Ø
Pipe NCDOT 816.01
North Carolina End Sections/Endwalls
20181121TED01
Section View
Isometric View
Notes
1) Endwall to be placed at the end of underdrain outlet and installed
perpendicular to roadway and flush with slope.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65 minimum.
4) Endwall accepts rigid nonperforated, smooth-bore pipe, 70 psi tested conforming
to the requirements of ASTM D2412.
5) The expanded steel mesh extends a minimum of 1" above the pipe OD.
6) The slot is for expanded steel mesh that allows easy removal for cleanout purposes.
7) Expanded steel mesh (rodent screen) to be galvanized with openings approximately
1
2" x 1" and weighs approximately 0.82 lbs psf conformimg to the requirements of
ASTM A123.
Plan View
Notes
1) This design is intended for precast structures produced by CP&P only, not
for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65
minimum. Cover Cc of 1
1
2" minimum unless otherwise noted.
4) Opening 8" maximum larger than pipe outside diameter. Additional
reinforcement around opening.
5) For use with pipe skewed 0 to 45 degrees. Opening to be adjusted
accordingly.
6) Contractor to consult VDOT EW-1APC standards for installation details.
7) All exposed 90° edges chamfered
3
4 inch.
8) Length and reinforcement may be increased as necessary for handling
considerations.
Notes
1) This design is intended for precast structures produced by CP&P only, not for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar or WWR conforming to the requirements of
ASTM A1064, grade 65 minimum.
4) All exposed edges to be chamfered.
Parallel Pipe End Section
Slope Pipe ID Pipe OD
L
6:1 15'' 24" 9'-4"
6:1 18" 26" 9'-4"
Cross Pipe End Section
Slope Pipe ID Pipe OD
L
4:1 15'' 24" 6'-6"
4:1 18" 26" 6'-6"
2'-6"
2'-4"
4
3
4
"
10"
14"
4"
2"
4"Ø
2
5
8
"
4"
6"
(4)
TITLE
11-21-18
DATE
Precast Underdrain Pipe Splash Pad for 6"Ø
Pipe NCDOT 816.01
North Carolina End Sections/Endwalls
20181121TED02
Section View
Isometric View
Notes
1) Endwall to be placed at the end of underdrain outlet and installed
perpendicular to roadway and flush with slope.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65 minimum.
4) Endwall accepts rigid nonperforated, smooth-bore pipe, 70 psi tested conforming
to the requirements of ASTM D2412.
5) The expanded steel mesh extends a minimum of 1" above the pipe OD.
6) The slot is for expanded steel mesh that allows easy removal for cleanout purposes.
7) Expanded steel mesh (rodent screen) to be galvanized with openings approximately
1
2" x 1" and weighs approximately 0.82 lbs psf conformimg to the requirements of
ASTM A123.
Plan View
Notes
1) This design is intended for precast structures produced by CP&P only, not
for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar
or WWR conforming to the requirements of ASTM A1064, grade 65
minimum. Cover Cc of 1
1
2" minimum unless otherwise noted.
4) Opening 8" maximum larger than pipe outside diameter. Additional
reinforcement around opening.
5) For use with pipe skewed 0 to 45 degrees. Opening to be adjusted
accordingly.
6) Contractor to consult VDOT EW-1APC standards for installation details.
7) All exposed 90° edges chamfered
3
4 inch.
8) Length and reinforcement may be increased as necessary for handling
considerations.
Notes
1) This design is intended for precast structures produced by CP&P only, not for cast-in-place construction.
2) Concrete compressive strength 4,000 psi minimum.
3) Steel reinforcing design conforms to ASTM A706 or A615, grade 60 rebar or WWR conforming to the requirements of
ASTM A1064, grade 65 minimum.
4) All exposed edges to be chamfered.
Parallel Pipe End Section
Slope Pipe ID Pipe OD
L
6:1 15'' 24" 9'-4"
6:1 18" 26" 9'-4"
Cross Pipe End Section
Slope Pipe ID Pipe OD
L
4:1 15'' 24" 6'-6"
4:1 18" 26" 6'-6"
2'-6"
2'-4" 6
3
4
"10"
17"
4"
2"
6"Ø
2
5
8
"
7"
6"
(4)
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