Maryland (SHA) Drainage Inlets

PCMDSHA2017A

Maryland Drainage Inlets

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 Maryland 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

Maryland State Highway Association standards and specifications

TITLE

05-09-17

DATE

Precast WR Inlet (MD 374.21)

20170510TED01

Elevation View

(Precast Curb)

MSHA Drainage Structures

Plan View

Section View Section View

(Precast Curb)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame, Grate, and Beam not shown for clarity.

5'-6"

4'-5

1

8

" 3'-5

1

8

"

16

5

16

"

16"

13

1

2

"

6"

5"

8"

1"

6'-6"

1'-4"

10"

5" Ctr of Structure

5"

4"

6"

Walls 6" (Typ)

10"

4"

1'-7"±

5'-10" Max

Riser Unit

6'-0" Max

Base Unit

6"

4" Min

Keyway Joints

As Required

Steps See

Note 9

Top of Curb

2

1

2

" x 2

1

2

" x

1

2

" Angle Iron

6'-0" long w/ #3 Bars

Galvanized after Welding

per ASTM A-123

TITLE

05-10-17

DATE

Precast WRM Inlet (MD 374.22)

20170510TED04

Plan View

(Precast Inlet Head)

MSHA Drainage Structures

Plan View

Section View

Section View

(Precast Inlet Head)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame, Grate, and Beam not shown for clarity.

5'-6"Walls 6" (Typ)

10"

4"

1'-4"±

10'-0" Max

Riser Unit

9'-6" Max

Base Unit

6"

4" Min

Steps See

Note 9

Top of Curb

5'-3

5

8

"6'-3

5

8

"

3'-0"

6'-6"

1'-6"

2

1

2

" Ext, Typ (optional, per

production facility preference)

Standard Type D F&C

MD-383.61

5"

Standard Type D F&C

MD-383.61

1'-8

1

2

"

TITLE

05-10-17

DATE

Precast Single WR Inlet (MD 374.23)

20170510TED02

MSHA Drainage Structures

Plan View

Section View

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame and Grate not shown for clarity.

Finished Grade

Steps See

Note 9

2'-7

1

4

"

2'-9

1

8

" 3'-9

1

8

"

Walls 6" (Typ)

4" Min

12" Max

4' min

5'-10" Max

Riser Unit

6'-0" Max

Base Unit

6"

Keyway Joints

As Required

TITLE

05-10-17

DATE

Precast Triple WR Inlet (MD 374.26)

20170510TED06

MSHA Drainage Structures

Plan View

Section View

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame, Grate, and Beam not shown for clarity.

Walls 8" (Typ)

10"

4"

8"±

10'-0" Max

Riser Unit

9'-6" Max

Base Unit

8"

4" Min

2

1

2

" Ext, Typ (optional, per

production facility preference)

8'-4

3

4

"

3'-5"

2'-10

3

4

"

3'-5"

Steps See

Note 9

Finished Grade

2'-9

1

8

"4'-1

1

8

"

TITLE

05-10-17

DATE

Precast Triple WRM Inlet (MD 374.27)

20170510TED05

Plan View

(Precast Concrete Slab)

MSHA Drainage Structures

Plan View

Section View

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame, Grate, and Beam not shown for clarity.

Section View

(Precast Concrete Slab)

(Type B)

Section View

(Precast Concrete Slab)

(Type C)

Walls 8" (Typ)

10"

4"

1'-2"±

10'-0" Max

Riser Unit

9'-6" Max

Base Unit

8"

4" Min

3'-2"

9'-8

3

4

"

1'-6

3

4

"

2

1

2

" Ext, Typ (optional, per

production facility preference)

5'-3

5

8

"6'-7

5

8

"

8'-4

3

4

"

3'-5"

2'-10

3

4

"

3'-5"

Standard Type D F&C

MD-383.61

Top of Curb

Steps See

Note 9

1'-10

1

2

"

10"

5" 1

2

"

1'-7

1

4

" 1'-6

3

4

"

2

5

8

"

1'-7

1

4

" 1'-6

3

4

"

8"

8'

4"

1

2

"

2

5

8

"

7"

TITLE

05-15-17

DATE

Precast NR Inlet (MD 374.24)

20170515TED01

Elevation View

(Precast Curb)

MSHA Drainage Structures

Plan View

Section View

Section View

(Precast Curb)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame, Grate, and Beam not shown for clarity.

3'-9

1

2

"

3'-6

3

8

" 2'-6

3

8

"

16

5

16

"

16"

13

1

2

"

6"

8"

1"

4'-9

1

2

"

1'-4"

10"

5" Ctr of Structure

5"

4"

6"

Walls 6" (Typ)

10"

4"

1'-7"±

10'-0" Max

Riser Unit

9'-6" Max

Base Unit

6"

4" Min

2

1

2

" x 2

1

2

" x

1

2

" Angle Iron

6'-0" long w/ #3 Bars

Galvanized after Welding

per ASTM A-123

Top of Curb

Steps See

Note 9

2

1

2

" Ext, Typ (optional, per

production facility preference)

5"

TITLE

05-15-17

DATE

Precast NRM Inlet (MD 374.25)

20170515TED02

Plan View

(Precast Inlet Head)

MSHA Drainage Structures

Plan View

Section View

Section View

(Precast Inlet Head)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame, Grate, and Beam not shown for clarity.

3'-9

1

2

"Walls 6" (Typ)

10"

1'-4"±

10'-0" Max

Riser Unit

9'-6" Max

Base Unit

6"

4" Min

4'-4

7

8

"5'-4

7

8

"

3'-0"

4'-9

1

2

"

1'-6"

2

1

2

" Ext, Typ (optional, per

production facility preference)

5"

1'-3

3

8

"

4"

Standard Type D F&C

MD-383.61

Standard Type D F&C

MD-383.61

Top of Curb

Steps See

Note 9

TITLE

05-12-17

DATE

Precast Type S Inlet Double Grate Tandem

(MD 374.70)

20170512TED01

MSHA Drainage Structures

Plan View

Section View

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame and Grate not shown for clarity.

5'-6

1

2

"

2'-7

1

2

" 3'-7

1

2

"

Walls 6" (Typ)

4" Min

12" Max

4' min

5'-10" Max

Riser Unit

6'-0" Max

Base Unit

6"

Keyway Joints

As Required

Finished Grade

Steps See

Note 9

TITLE

05-12-17

DATE

Precast Standard Type S Combination Inlet

(MD 374.71)

20170512TED02

Elevation View

(Precast Curb)

MSHA Drainage Structures

Plan View

Section View

Section View

(Precast Curb)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame, Grate, and Beam not shown for clarity.

5'-6

1

2

"

4'-5" 3'-5"

16

5

16

"

16"

13

1

2

"

6"

5"

8"

1"

6'-6

1

2

"

1'-4"

10"

5" Ctr of Structure

5"

4"

6"

Walls 6" (Typ)

10"

4"

1'-7"±

5'-10" Max

Riser Unit

6'-0" Max

Base Unit

6"

4" Min

2

1

2

" x 2

1

2

" x

1

2

" Angle Iron

6'-0" long w/ #3 Bars

Galvanized after Welding

per ASTM A-123

Top of Curb

Steps See

Note 9

Keyway Joints

As Required

TITLE

05-15-17

DATE

Precast Standard Type HS Combination Inlet

(MD 374.72)

20170515TED03

Plan View

(Precast Inlet Head)

MSHA Drainage Structures

Plan View

Section View

Section View

(Precast Inlet Head)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame, Grate, and Beam not shown for clarity.

5'-6

1

2

"Walls 6" (Typ)

10"

1'-4"±

10'-0" Max

Riser Unit

9'-6" Max

Base Unit

6"

4" Min

5'-2

1

2

"6'-2

1

2

"

3'-0"

6'-6

1

2

"

1'-6"

2

1

2

" Ext, Typ (optional, per

production facility preference)

5"

4"

Steps See

Note 9

Top of Curb

Standard Type D F&C

MD-383.61

Standard Type D F&C

MD-383.61

1'-8

5

8

"

TITLE

05-10-17

DATE

Precast Type S Inlet Single Grate

(MD 374.73)

20170510TED03

MSHA Drainage Structures

Plan View

Section View

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame and Grate not shown for clarity.

2'-7"

2'-7

1

2

" 3'-11

1

2

"

Walls 8" Min (Typ)

4" Min

12" Max

4' min

5'-10" Max

Riser Unit

6'-0" Max

Base Unit

Keyway Joints

As Required

Steps See

Note 9

Finished Grade

8"

TITLE

05-11-17

DATE

Precast Standard Type E Inlet (MD 376.11)

20170511TED01

MSHA Drainage Structures

Plan View

Section View

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Invert shaping to be constructed in field by contractor.

10) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

11) Frame and Grate not shown for clarity.

Walls 6" (Typ)

7" Min

12" Max

10'-0" Max

Riser Unit

9'-6" Max

Base Unit

4" Min

2

1

2

" Ext, Typ (optional, per

production facility preference)

4'-0

1

2

"

1'-8

1

2

"2'-8

1

2

"

Finished Grade

6"

TITLE

05-12-17

DATE

Precast Standard Type E Combination Inlet

(MD 374.74)

20170512TED03

Elevation View

(Precast Curb)

MSHA Drainage Structures

Plan View

Section View

Section View

(Precast Curb)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame and Grate not shown for clarity.

4'-0

1

2

"

3'-10" 2'-6"

16

5

16

"

16"

13

1

2

"

6"

5"

8"

1"

5'-0

1

2

"

1'-4"

4"

6"

Walls 8" (Typ)

1'-7"±

5'-10" Max

Riser Unit

6'-0" Max

Base Unit

8"

4" Min

2

1

2

" x 2

1

2

" x

1

2

" Angle Iron

6'-0" long w/ #3 Bars

Galvanized after Welding

per ASTM A-123

Keyway Joints

As Required

Steps See

Note 9

Top of Curb

TITLE

05-15-17

DATE

Precast Standard Type H Combination Inlet

(MD 374.75)

20170515TED04

Plan View

(Precast Inlet Head)

MSHA Drainage Structures

Plan View

Section View

Section View

(Precast Inlet Head)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame and Grate not shown for clarity.

4'-0

1

2

"Walls 6" (Typ)

1'-4"±

10'-0" Max

Riser Unit

9'-6" Max

Base Unit

6"

4" Min

4'-2

1

2

"5'-2

1

2

"

3'-0"

5'-0

1

2

"

1'-6"

2

1

2

" Ext, Typ (optional, per

production facility preference)

5"

Standard Type D F&C

MD-383.61

2'-6

1

4

"

Steps See Note 9

Top of Curb

Standard Type D F&C

MD-383.61

TITLE

05-15-17

DATE

Precast ADA Inlet Single Grate (MD 374.85)

20170515TED05

MSHA Drainage Structures

Plan View

Section View

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Invert shaping to be constructed in field by contractor.

10) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

11) Frame and Grate not shown for clarity.

Walls 6" (Typ)

6" Min

12" Max

5'-10" Max

Riser Unit

6'-0" Max

Base Unit

4" Min

2'-0"

2'-0" 3'-0"

Finished Grade

6"

Keyway Joints

As Required

TITLE

05-15-17

DATE

Precast ADA Inlet Double Grate Tandem

(MD 374.86)

20170515TED06

MSHA Drainage Structures

Plan View

Section View

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Frame and Grate not shown for clarity.

3'-9

1

4

"

2'-0" 3'-0"

Walls 6" Min (Typ)

3" Min

12" Max

4' min

4'-10" Max

Riser Unit

5'-0" Max

Base Unit

6"

Keyway Joints

As Required

Finished Grade

Steps See

Note 9

TITLE

05-11-17

DATE

Precast Standard Type K Single or Double

Inlet Non-Traffic (MD 378.03)

20170511TED03

MSHA Drainage Structures

Plan View

(Double Opening)

Section View

(Double Opening)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) Frame and Grate not shown for clarity, installed by others.

5'-10" Max

Riser Unit

6'-0" Max

Base Unit

4" Min

3'-0"

3'-0"4'-4"

6"

8" 8"

4'-4"

12"12'

Finished Grade

3"

Steps

See Note 9

12"

15"

Note: Single Opening

same as Double except

only one end is open.

Keyway Joints

As Required

TITLE

05-11-17

DATE

Precast Standard Type K Single or Double

Inlet Open-End Grate (MD 378.11)

20170511TED04

MSHA Drainage Structures

Plan View

(Double Opening)

Section View A-A

(Double Opening)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Invert shaping to be constructed in field by contractor.

11) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Grate not shown for clarity.

B

B

A

A

Section View B-B

(Double Opening)

5'-10" Max

Riser Unit

6'-0" Max

Base Unit

4" Min

3'-0"

3'-6"

Notch

4'-10"

6"

8" 8"

4'-4"

Steps

See Note 9

3

1

2

" Notch

3'-7"

3

1

2

" Notch

3" Notch

Keyway Joints

As Required

Note: Single Opening

same as Double except

only one end is open.

5" 5"3'-6"

Notch

8"

5"

4'-10"

3'-6" 8"8"

Gutter By

Contractor

TITLE

05-11-17

DATE

Precast Yard Inlet (MD 381.02)

20170511TED02

MSHA Drainage Structures

Plan View

Section View

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Invert shaping to be constructed in field by contractor.

10) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

11) Frame and Grate not shown for clarity.

Walls 6" (Typ)

1" Min

12" Max

5'-10" Max

Riser Unit

6'-0" Max

Base Unit

4" Min

2'-0"

2'-0"3'-0"

Finished Grade

6"

Keyway Joints

As Required

TITLE

06-16-17

DATE

Precast Square & Rectangular COG Inlets

(5', 10', 15' & 20') (MD 374.51)

20170616TED03

MSHA Drainage Structures

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement

conforms to ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Grade and slope adjustments to be completed in the field by contractor.

6) Channel constructed in the field.

7) Joints per manufacturer's design, sealed in field by contractor.

8) Manhole steps provided at 15" spacing, aligned vertically.

9) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

10) Precast base unit walls may taper per manufacturer's design.

11) From curb inlet line, inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15

Inlets.

Precast Structure Notes

1) For Components Notes and Dimensions (B, H1, H2,t, W, & Y)

See Drawing CP&P MD 374.51-01.

Section View B-B

Keyway

(Alternate Joint)

Plan View

Section View A-A

Inlet

Type

T L

COG-5 5'-0" 6'-0"COG-10 10'-0" 11'-0"COG-15 15'-0" 16'-0"

COG-20 20'-0" 21'-0"

B

B

A

A

Yt t

6"

3'-2"3'-0"

2'-6"

Opg

T (Trough Opg)

L

6" 6"

Standard Type D F&C

MD 383.61

Gutter By

Contractor

Angle Iron

1'-8"

1'-4'

1'-8" Opg

1'-11"

Gutter Tie

See CP&P MD 374.64

Slope Trough Floor

See Note 9

Inlet Slab

Flat Joint

2

1

2" Ext. Typ(optional, per

production facility preference)

Channel

See Note 6

Grade & Slope Adj

See Note 5

See CP&P

MD 374.64

Adjustment

Collar

See Alternate Joint

Steps

See Note 8

6"

6"

H2

Riser

H1

Base

B

Y t

6" Min

6" Min

6" Min

Wt

4" Min

Joints

See Note 7

TITLE

06-16-17

DATE

Precast Square & Rectangular COG Inlets

(5', 10', 15' & 20') (MD 374.51-01)

20170629TED09

MSHA Drainage Structures

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to ASTM A1064,

Grade 65 min.

4) Reinforcing designed by CP&P.

5) Grade and slope adjustments to be completed in the field by contractor.

6) Channel constructed in the field.

7) Joints per manufacturer's design, sealed in field by contractor.

8) Manhole steps provided at 15" spacing, aligned vertically.

9) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

10) Precast base unit walls may taper per manufacturer's design.

11) From curb inlet line, inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15

Inlets.

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to ASTM A1064,

Grade 65 min.

4) Reinforcing designed by CP&P.

5) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

6) Angle iron and shear stud connectors shall be galvanized after welding in accordance with ASTM A123.

7) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15 Inlets.

8) Lifting devices provided for handling at manufacturer's discrection.

Pipe Size

Max

Precast Square and Rectangular COG / COS Inlet Dimensions

B H1 Base H2 Riser t Min W Y

Min Distance (ft)

Top of Curb to

Pipe Invert

Max

Depth

12" 6" 2' to6'-0" Max

1' to5'-10" Max 6" 48" 48" 4.34 30'

24" 6" 3' to6'-0" Max

1' to5'-10" Max 6" 48" 48" 4.61-5.42 30'

33" 6" 4' to6'-0" Max

1' to5'-10" Max 6" 48" 48" 5.69-6.23 30'

36" 6" 5' to6'-0" Max

1' to5'-10" Max 6" 48" 48" 6.50 30'

TITLE

06-19-17

DATE

Precast Square & Rectangular COS Inlets

(5', 10', 15' & 20') (MD 374.61)

20170619TED01

MSHA Drainage Structures

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement

conforms to ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Grade and slope adjustments to be completed in the field by contractor.

6) Channel constructed in the field.

7) Joints per manufacturer's design, sealed in field by contractor.

8) Manhole steps provided at 15" spacing, aligned vertically.

9) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

10) Precast base unit walls may taper per manufacturer's design.

11) From curb inlet line, inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15

Inlets.

Precast Structure Notes

1) For Components Notes and Dimensions (B, H1, H2,t, W, & Y)

See Drawing CP&P MD 374.61-01.

Section View B-B

Keyway

(Alternate Joint)

Plan View

Section View A-A

Inlet

Type

T L

COG-5 5'-0" 6'-0"COG-10 10'-0" 11'-0"COG-15 15'-0" 16'-0"

COG-20 20'-0" 21'-0"

B

B

A

A

Yt t

6"

3'-2"3'-0"

2'-6"

Opg

T (Trough Opg)

L

Angle Iron

1'-8"

1'-4'

1'-8" Opg

1'-11"

Gutter Tie

See CP&P MD 374.64

6"

6"

H2

Riser

H1

Base

B

Y t

6" Min

6" Min

6" Min

Wt

4" Min

2

1

2" Ext. Typ(optional, per

production facility preference)

See Alternate Joint

Flat Joint

Inlet Slab

Slope Trough Floor

See Note 9

Standard Type D F&C

MD 383.61

Channel

See Note 6

Joints

See Note 7

Steps

See Note 8

Grade & Slope Adj

See Note 5

Adjustment

Collar

See CP&P

MD 374.64

Gutter By

Contractor

L/2

6" 6"

TITLE

06-19-17

DATE

Precast Square & Rectangular COS Inlets

(5', 10', 15' & 20') (MD 374.61-01)

20170629TED10

MSHA Drainage Structures

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to ASTM A1064,

Grade 65 min.

4) Reinforcing designed by CP&P.

5) Grade and slope adjustments to be completed in the field by contractor.

6) Channel constructed in the field.

7) Joints per manufacturer's design, sealed in field by contractor.

8) Manhole steps provided at 15" spacing, aligned vertically.

9) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

10) Precast base unit walls may taper per manufacturer's design.

11) From curb inlet line, inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15

Inlets.

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to ASTM A1064,

Grade 65 min.

4) Reinforcing designed by CP&P.

5) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

6) Angle iron and shear stud connectors shall be galvanized after welding in accordance with ASTM A123.

7) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15 Inlets.

8) Lifting devices provided for handling at manufacturer's discrection.

Pipe Size

Max

Precast Square and Rectangular COG / COS Inlet Dimensions

B H1 Base H2 Riser t Min W Y

Min Distance (ft)

Top of Curb to

Pipe Invert

Max

Depth

12" 6" 2' to6'-0" Max

1' to5'-10" Max 6" 48" 48" 4.34 30'

24" 6" 3' to6'-0" Max

1' to5'-10" Max 6" 48" 48" 4.61-5.42 30'

33" 6" 4' to6'-0" Max

1' to5'-10" Max 6" 48" 48" 5.69-6.23 30'

36" 6" 5' to6'-0" Max

1' to5'-10" Max 6" 48" 48" 6.50 30'

TITLE

06-20-17

DATE

Precast Circular COG Inlets (5', 10', 15' & 20')

(MD 374.62)

20170620TED01

MSHA Drainage Structures

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement

conforms to ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Grade and slope adjustments to be completed in the field by contractor.

6) Channel constructed in the field.

7) Joints per manufacturer's design, sealed in field by contractor.

8) Manhole steps provided at 15" spacing, aligned vertically.

9) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

10) Precast base unit walls may taper per manufacturer's design.

11) From curb inlet line, inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15

Inlets.

Precast Structure Notes

1) For Components Notes and Dimensions (B, D, G, H1, H2, T, & W)

See Drawing CP&P MD 374.62-01.

Section View B-B

Plan View

Section View A-A

Inlet

Type

T L

COG-5 5'-0" 6'-0"COG-10 10'-0" 11'-0"COG-15 15'-0" 16'-0"

COG-20 20'-0" 21'-0"

B

B

A

A

3'-2"3'-0"

2'-6"

Opg

T (Trough Opg)

L

1'-8"

1'-4'

1'-8" Opg

6"

G

H2

Riser

H1

Base

B

D W

DW

4" Min

6"

Gutter Tie

See CP&P MD 374.64

Angle Iron

Standard Type D F&C

MD 383.61

Slope Trough Floor

See Note 10

Inlet Slab

Channel

See Note 7

Joints

See Note 8

Steps

See Note 9

Grade & Slope Adj

See Note 6

Gutter By

Contractor

See CP&P

MD 374.64

Adjustment

Collar

6"

Interlocking Block out

1" Depth

TITLE

06-20-17

DATE

Precast Circular COG Inlets (5', 10', 15' & 20')

(MD 374.62-01)

20170629TED11

MSHA Drainage Structures

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to ASTM A1064,

Grade 65 min.

4) Circular sections meet ASTM C478 / AASHTO M199.

5) Reinforcing designed by CP&P.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Channel constructed in the field.

8) Joints per manufacturer's design, sealed in field by contractor.

9) Manhole steps provided at 16" spacing, aligned vertically.

10) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

11) Inlet slab not required for 36" Dia. Inlet. Trough sits directly on top of the circular unit. Contractor to mortar area between

the outside walls of the trough and the unit wall in the field.

12) Precast base unit walls may taper per manufacturer's design.

13) From curb inlet line, inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15

Inlets.

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to ASTM A1064,

Grade 65 min.

4) Reinforcing designed by CP&P.

5) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

6) Angle iron and shear stud connectors shall be galvanized after welding in accordance with ASTM A123.

7) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15 Inlets.

8) Lifting devices provided for handling at manufacturer's discrection.

Pipe Size

Max

Precast Circular COG / COS Inlet Dimensions

B

H1 Base

Max

H2 Riser

Inlet

SlabG

D W

Min Distance

(ft) Top of

Curb to Pipe

Invert

Max Depth

12" 6" 4' 1' to 4'NotReq 36" 4" 3.84 20'

24" 8" 8' 1' to 8' 6" 48" 5" 4.58-5.43 30'

33" 8" 8' 1' to 8' 8" 60" 6" 5.87-6.41 30'

36" 8" 8' 1' to 8' 8" 60" 6" 6.69 30'

42" 8" 8' 1' to 8' 8" 72" 7" 7.23 25'

48" 8" 8' 1' to 8' 8" 72" 7" 7.77 25'

54" 8" 7'-8" 2'-0" to 8' 8" 84" 8" 8.31 20'

60" 8" 7'-8" 2'-0" to 8' 8" 84" 8" 8.85 20'

72" 8" 7'-8" 2'-8" to 8' 8" 96" 9" 9.31-9.94 20'

84" 10" 5'-10" 2'-8" to 6' 8" 120" 10" 10.42-10.96 20'

TITLE

06-20-17

DATE

Precast Circular COS Inlets (5', 10', 15' & 20')

(MD 374.63)

20170620TED03

MSHA Drainage Structures

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement

conforms to ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Grade and slope adjustments to be completed in the field by contractor.

6) Channel constructed in the field.

7) Joints per manufacturer's design, sealed in field by contractor.

8) Manhole steps provided at 15" spacing, aligned vertically.

9) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

10) Precast base unit walls may taper per manufacturer's design.

11) From curb inlet line, inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

12) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15

Inlets.

Precast Structure Notes

1) For Components Notes and Dimensions (B, D, G, H1, H2, T, & W)

See Drawing CP&P MD 374.63-01.

Section View B-B

Plan View

Section View A-A

Inlet

Type

T L

COG-5 5'-0" 6'-0"COG-10 10'-0" 11'-0"COG-15 15'-0" 16'-0"

COG-20 20'-0" 21'-0"

B

B

A A

T/2

3'-2"3'-0"

2'-6"

Opg

T (Trough Opg)

L

Angle Iron

1'-8"

1'-4'

1'-8" Opg

Gutter Tie

See CP&P MD 374.64

6"

G

H2

Riser

H1

Base

B

D W

DW

4" Min

L/2

6" 6"

Standard Type D F&C

MD 383.61

Slope Trough Floor

See Note 10

Inlet Slab

Joints

See Note 8Steps

See Note 9

Grade & Slope Adj

See Note 6

Gutter By

Contractor

See CP&P

MD 374.64

Adjustment

Collar

Channel

See Note 7

Interlocking Block out

1" Depth

TITLE

06-20-17

DATE

Precast Circular COS Inlets (5', 10', 15' & 20')

(MD 374.63-01)

20170629TED12

MSHA Drainage Structures

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to ASTM A1064,

Grade 65 min.

4) Circular sections meet ASTM C478 / AASHTO M199.

5) Reinforcing designed by CP&P.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Channel constructed in the field.

8) Joints per manufacturer's design, sealed in field by contractor.

9) Manhole steps provided at 16" spacing, aligned vertically.

10) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

11) Inlet slab not required for 36" Dia. Inlet. Trough sits directly on top of the circular unit. Contractor to mortar area between

the outside walls of the trough and the unit wall in the field.

12) Precast base unit walls may taper per manufacturer's design.

13) From curb inlet line, inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15

Inlets.

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to ASTM A1064,

Grade 65 min.

4) Reinforcing designed by CP&P.

5) Sloped trough floor to be constructed in the field and used only when road grade is 1.5% or less.

6) Angle iron and shear stud connectors shall be galvanized after welding in accordance with ASTM A123.

7) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs with T=16' may be used for COG-15 & COS-15 Inlets.

8) Lifting devices provided for handling at manufacturer's discrection.

Pipe Size

Max

Precast Circular COG / COS Inlet Dimensions

B

H1 Base

Max

H2 Riser

Inlet

SlabG

D W

Min Distance

(ft) Top of

Curb to Pipe

Invert

Max Depth

12" 6" 4' 1' to 4'NotReq 36" 4" 3.84 20'

24" 8" 8' 1' to 8' 6" 48" 5" 4.58-5.43 30'

33" 8" 8' 1' to 8' 8" 60" 6" 5.87-6.41 30'

36" 8" 8' 1' to 8' 8" 60" 6" 6.69 30'

42" 8" 8' 1' to 8' 8" 72" 7" 7.23 25'

48" 8" 8' 1' to 8' 8" 72" 7" 7.77 25'

54" 8" 7'-8" 2'-0" to 8' 8" 84" 8" 8.31 20'

60" 8" 7'-8" 2'-0" to 8' 8" 84" 8" 8.85 20'

72" 8" 7'-8" 2'-8" to 8' 8" 96" 9" 9.31-9.94 20'

84" 10" 5'-10" 2'-8" to 6' 8" 120" 10" 10.42-10.96 20'

TITLE

06-16-17

DATE

Precast Inlet Slabs for COG & COS (MD 374.55-01)

20170616TED01

MSHA Drainage Structures

Section View

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min.

WWR reinforcement conforms to ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

Plan View

Inlet Slab for Circular

COG & COS Inlets

Plan View

Inlet Slab for Square & Rectangular

COG & COS Inlets

Section View

Plan View

Adjustment Collar for Square, Rectangular and Circular

COG & COS Inlets

Section View

Circular Inlet Slab Dimensions

D

(in)

As in²/ft

G

(in)

W

36" N/A N/A 4"48" .58 6" 5"

60" .40 8" 6"

72" .46 8" 7"84" .48 8" 8"

96" .53 8" 9"

120" .60 8" 10"

D+2W

Opening can be located

Left, Right, or Center

Interlocking Block out 1" Depth

Interlocking Block out 1" Depth

Diameter=D+2W

2'-6"

Opg

2'-6"

Opg

2'-6"

Opg

2'-6"

Opg

2'-6"

Opg

2'-6"

Opg

1'-8" Opg

1'-8" Opg

2'-8"

3'-6"

G

W6"

5'-0"

5'-0"

8"

8"

6"

7"

1

2

"

6"

6"

3" Thickness

TITLE

06-16-17

DATE

Precast Troughs for COG & COS Inlets (MD 374.64)

20170616TED02

MSHA Drainage Structures

Section View

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min.

WWR reinforcement conforms to ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Sloped trough floor to be constructed in the field and used only when

road grade is 1.5% or less.

6) Angle iron and shear stud connectors shall be galvanized after welding

in accordance with ASTM A123.

7) Troughs with T=6'-0" may be used for COG-5 & COS-5 Inlets. Troughs

with T=16' may be used for COG-15 & COS-15 Inlets.

8) Lifting devices provided for handling at manufacturer's discrection.

Plan View

Inlet Slab for Circular

COG & COS Inlets

Plan View

Inlet Slab for Square & Rectangular

COG & COS Inlets

Detail A

Plan View

Adjustment Collar for Square, Rectangular and Circular

COG & COS Inlets

Section View A-A

Plan View COGPlan View COS

Elevation View

Alternate COS Trough

(Trough Front Not Shown)

Elevation View

Alternate COG Trough

(Trough Front Not Shown)

Precast Trough Front

(Tyipcal COG & COS

Length=T)

Circular Inlet Slab Dimensions

D

(in)

As in²/ft

G

(in)

W

36" N/A N/A 4"

48" .58 6" 5"

60" .40 8" 6"

72" .46 8" 7"

84" .48 8" 8"

96" .53 8" 9"

120" .60 8" 10"

Inlet

Type

T L

COG-5 5'-0" 6'-0"

COG-10 10'-0" 11'-0"

COG-15 15'-0" 16'-0"

COG-20 20'-0" 21'-0"

COS-5 5'-0" 6'-0"

COS-10 10'-0" 11'-0"

COS-15 15'-0" 16'-0"

COS-20 20'-0" 21'-0"

5'-0"

5'-0"

2'-6"

Opg

8"

8"

1'-8" Opg

Opening can be located

Left, Right, or Center

6"

2'-6"

Opg

7"

1

2

"

3'-6"

2'-8"

2'-6"

Opg

1'-8" Opg

6"

6.00

3" Thickness

2'-6"

Opg

Interlocking Block out 1" Depth

Interlocking Block out 1" Depth

G

D+2W

2'-6"

Opg

Diameter=D+2W

6" 2'-6"

Opg

W

3'-2"

1'-8"

1'-4"

1'-8" Opg

3'-0"

Standard

Type D F&C

MD 383.61

3'-0"

1'-8" Opg

Standard

Type D F&C

MD 383.61

3'-2"

1'-8"

1'-4"

Angle Iron

Angle Iron

6"

2"

Opg

See Note 5

See Note 5

Opg

6"

2"

A

A

A

A

11"

4

1

2

"

7"

2"

4"3"

6" x

1

2" Tie Devices

Handling Device

4"

1

3

4

"

4" x

1

2" Shear Stud

Angle Iron

4"x3"x

1

2" x Length

of Trough Dimension

Detail A

2'-1

5

8

"

1'-0"

6"

6"

2"

Interlocking

Block out 1" Depth

Gutter

Cast By

Contractor

2'-1" 1'-1"

2"

4"

8"

6"

L

L/2

2'-6"

Opg

T (Trough Opg)

6" Typ

L

1'-11"

2'-0"

Opg

T (Trough Opg)

6" Typ

3'-0"

1" 3'-2"

1'-8" Opg

3"3"

TITLE

06-15-17

DATE

Precast 10'-0" COG & COS Inlet Box (W=2'-6" thru

4'-0"-H=12' Max)& Top Slab(MD 374.66 & 374.67)

20170615TED01

Plan View

(Inlet Box)

MSHA Drainage Structures

Section View

Section View

(Inlet Box)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Plan View

(Top Slab)

Section View

(Top Slab)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Joints provided when risers are required. All joints to be grouted with non-shrink grout inside and outside.

11) Invert channel to be constructed in field by contractor.

12) Pipe supports and gutter to be supplied and installed by others. Minimum of (1) support at 5' max spacing required.

13) Structure and Top Slab designed for occasional HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Frame and cover to be located above steps/ ladder rungs in inlet below.

Standard Type D F&C

MD-383.61 See Note 14

4" x 3" x

1

2

" Angle Iron

w/4" x

1

2

" Shear Stud 3'-6" CC Max

Galvanized after Welding per ASTM A-123

Finished Grade

Steps See

Note 9

Keyway Joints

As Required

6" Exposed Reinforcement

11'-0"

3'-6" Min

5'-0" Max

10'-0" Walls

6"(Typ)

2'-6" Min

4'-0" Max

8" Min

4" Min

1'-0"

6'-0" Max

Base Unit

6"

12'-0"

Max

6'-0" Max

Riser Unit

2'-11"

20"

6"

6"

4"

TITLE

06-15-17

DATE

Precast 10'-0" COG & COS Inlet Box (W=2'-6" thru

6'-0"-H=17'-6" Max)& Top Slab(MD 374.66 & 374.67)

20170615TED02

Plan View

(Inlet Box)

MSHA Drainage Structures

Section View

Section View

(Inlet Box)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Plan View

(Top Slab)

Section View

(Top Slab)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Joints provided when risers are required. All joints to be grouted with non-shrink grout inside and outside.

11) Invert shaping to be constructed in field by contractor.

12) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

13) Frame, Grate, and Beam not shown for clarity.

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Joints provided when risers are required. All joints to be grouted with non-shrink grout inside and outside.

11) Invert channel to be constructed in field by contractor.

12) Pipe supports and gutter to be supplied and installed by others. Minimum of (1) support at 5' max

spacing required.

13) Structure and Top Slab designed for occasional HS-25 loading, according to AASHTO LRFD Bridge

Design Specifications.

14) Frame and cover to be located above steps/ ladder rungs in inlet below.

Precast Drip Stone Landing Dimensions

Manhole Ø D T W X

48'' 4'-10'' 6'' 8'' 2'-5''

60'' 6'-0'' 8'' 8'' 3'-7''

72'' 7'-2'' 8'' 8'' 4'-9''

84'' 8'-4'' 8'' 8'' 5'-11''

96'' 9'-6'' 10'' 9'' 7'-0''

120'' 11'-8'' 10'' 10'' 9'-1''

2

1

2

" Ext, Typ (optional, per

production facility preference)

Standard Type D F&C

MD-383.61 See Note 14

4" x 3" x

1

2

" Angle Iron

w/4" x

1

2

" Shear Stud 3'-6" CC Max

Galvanized after Welding per ASTM A-123

6" Exposed Reinforcement

Finished Grade

Steps See

Note 9

Joints

See Note 10

11'-0"

W+12"

7'-0" Max

10'-0"

2'-11" W

8" Min, 12" Max

1'-0"

17'-6"

Max

10'-0" Max

Riser Unit

9'-6" Max

Base Unit

4" Min

6"

4"

6"

20"

6"

Box Width

W

2'-6''

3'-0''

3'-6''

4'-0''

4'-6''

5'-0"

5'-6"

6'-0''

Walls

6"(Typ)

TITLE

06-14-17

DATE

Precast 5'-0" COG & COS Inlet Box (W=2'-6" thru

4'-0"-H=12' Max)& Top Slab(MD 374.66 & 374.67)

20170614TED01

Plan View

(Inlet Box)

MSHA Drainage Structures

Section View

Section View

(Inlet Box)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Plan View

(Top Slab)

Section View

(Top Slab)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Joints provided when risers are required. All joints to be grouted with non-shrink grout inside and outside.

11) Invert channel to be constructed in field by contractor.

12) Structure and Top Slab designed for occasional HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

13) Frame and cover to be located above steps/ ladder rungs in inlet below.

Standard Type D F&C

MD-383.61 See Note 14

6'-0"

3'-6" Min

5'-0" Max

5'-0"

30"

2'-6" Min

4'-0" Max

Walls 6" (Typ)

4" x 3" x

1

2

" Angle Iron

w/4" x

1

2

" Shear Stud 3'-6" CC Max

Galvanized after Welding per ASTM A-123

4"

6"

6"

20"

Steps See

Note 9

Keyway Joints

As Required

1'-0"

12'-0" Max

6'-0" Max

Riser Unit

6'-0" Max

Base Unit

4" Min

8" Min

Finished Grade

6" Exposed Reinforcement

6"

TITLE

06-14-17

DATE

Precast 5'-0" COG & COS Inlet Box (W=2'-6" thru

6'-0"-H=17'-6" Max)& Top Slab(MD 374.66 & 374.67)

20170614TED02

Plan View

(Inlet Box)

MSHA Drainage Structures

Section View

Section View

(Inlet Box)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Plan View

(Top Slab)

Section View

(Top Slab)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Joints provided when risers are required. All joints to be grouted with non-shrink grout inside and outside.

11) Invert channel to be constructed in field by contractor.

12) Structure and Top Slab designed for occasional HS-25 loading, according to AASHTO LRFD Bridge

Design Specifications.

13) Frame and cover to be located above steps/ ladder rungs in inlet below.

Standard Type D F&C

MD-383.61 See Note 13

4" x 3" x

1

2

" Angle Iron

w/4" x

1

2

" Shear Stud 3'-6" CC Max

Galvanized after Welding per ASTM A-123

Finished Grade

6" Exposed Reinforcement

6'-0"

W+12"

7'-0" Max

5'-0"

30"

Walls 6" (Typ)

W

2

1

2

" Ext, Typ (optional, per

production facility preference)

4" Min

17'-6"

Max

10'-0" Max

Riser Unit

9'-6" Max

Base Unit

Steps See

Note 9

8" Min, 12" Max

1'-0"

6"

4"

6"

20"

6"

Joints

See Note 10

Box Width

W

2'-6''

3'-0''

3'-6''

4'-0''

4'-6''

5'-0"

6'-0''

TITLE

06-15-17

DATE

Precast 15'-0" COG & COS Inlet Box (W=2'-6" thru

6'-0"-H=16'-0" Max)& Top Slab(MD 374.66 & 374.67)

20170615TED03

Plan View

(Inlet Box)

MSHA Drainage Structures

Section View

Section View

(Inlet Box)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Plan View

(Top Slab)

Section View

(Top Slab)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Joints provided when risers are required. All joints to be grouted with non-shrink grout inside and outside.

11) Invert shaping to be constructed in field by contractor.

12) From curb line, Inlet designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

13) Frame, Grate, and Beam not shown for clarity.

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Joints provided when risers are required. All joints to be grouted with non-shrink grout inside and outside.

11) Invert channel to be constructed in field by contractor.

12) Pipe supports and gutter to be supplied and installed by others. Minimum of (2) support at 5' max

spacing required.

13) Structure and Top Slab designed for occasional HS-25 loading, according to AASHTO LRFD Bridge

Design Specifications.

14) Frame and cover to be located above steps/ ladder rungs in inlet below.

Precast Drip Stone Landing Dimensions

Manhole Ø D T W X

48'' 4'-10'' 6'' 8'' 2'-5''

60'' 6'-0'' 8'' 8'' 3'-7''

72'' 7'-2'' 8'' 8'' 4'-9''

84'' 8'-4'' 8'' 8'' 5'-11''

96'' 9'-6'' 10'' 9'' 7'-0''

120'' 11'-8'' 10'' 10'' 9'-1''

16'-4"

W+16"

7'-4" Max

Standard Type D F&C

MD-383.61 See Note 14

4"

6"

6"

20"

Finished Grade

Joints

See Note 10

2

1

2

" Ext, Typ (optional, per

production facility preference)

15'-0" Walls 8" (Typ)

2'-11"

Steps See

Note 9

W

1'-0"

16'-0"

Max

10'-0" Max

Riser Unit

9'-6" Max

Base Unit

4" Min

8" Min, 12" Max

4" x 3" x

1

2

" Angle Iron

w/4" x

1

2

" Shear Stud 3'-6" CC Max

Galvanized after Welding per ASTM A-123

6" Exposed Reinforcement

Box Width

W

2'-6''

3'-0''

3'-6''

4'-0''

4'-6''

5'-0"

5'-6"

6'-0''

8"

TITLE

06-15-17

DATE

Precast 20'-0" COG & COS Inlet Box (W=2'-6" thru

6'-0"-H=14'-6" Max)& Top Slab(MD 374.66 & 374.67)

20170629TED08

Plan View

(Inlet Box)

MSHA Drainage Structures

Section View

Section View

(Inlet Box)

Plan View

(Top Slab)

Section View

(Top Slab)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Lifting devices provided for handling at manufacturer's discrection.

6) Grade and slope adjustments to be completed in the field by contractor.

7) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

8) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

9) Steps provided at 15" spacing, aligned vertically.

10) Joints provided when risers are required. All joints to be grouted with non-shrink grout inside and outside.

11) Invert channel to be constructed in field by contractor.

12) Pipe supports and gutter to be supplied and installed by others. Minimum of (3) support at 5' max

spacing required.

13) Structure and Top Slab designed for occasional HS-25 loading, according to AASHTO LRFD Bridge

Design Specifications.

14) Frame and cover to be located above steps/ ladder rungs in inlet below.

Box Width

W

2'-6''

3'-0''

3'-6''

4'-0''

4'-6''

5'-0"

5'-6"

6'-0''

Precast Drip Stone Landing Dimensions

Manhole Ø D T W X

48'' 4'-10'' 6'' 8'' 2'-5''

60'' 6'-0'' 8'' 8'' 3'-7''

72'' 7'-2'' 8'' 8'' 4'-9''

84'' 8'-4'' 8'' 8'' 5'-11''

96'' 9'-6'' 10'' 9'' 7'-0''

120'' 11'-8'' 10'' 10'' 9'-1''

4" x 3" x

1

2

" Angle Iron

w/4" x

1

2

" Shear Stud 3'-6" CC Max

Galvanized after Welding per ASTM A-123

Standard Type D F&C

MD-383.61 See Note 14

6" Exposed Reinforcement

Finished Grade

Joints

See Note 10

Steps See

Note 9

21'-4"

W+16"

7'-4" Max

20'-0" Walls 8" (Typ)

W

2

1

2

" Ext, Typ (optional, per

production facility preference)

4"

20"

6"

6"

4' Min

8" Min, 12" Max

14'-6"

Max

6'-0" Max

Riser Unit

9'-6" max

Base Unit

1'-0"

8"

TITLE

05-16-17

DATE

Precast 48"Ø Manhole for up to 24" Pipes

(MD 384.01)

20170629TED02

Plan View

(Precast Flattop)

MSHA Drainage Structures

Section View

Section View

(Precast Flattop)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

8" 8"2'-0"Ø

Opg

Adjustment Rings

3" or 4" Thick

Max 12" Adjustment

Steps See

Note 12

Joints

See Note 9

Varies

2'-0" to 2'-8"

Varies

1'-0" to 8'-0"

Riser Unit

Varies

2'-0" to 8'-0"

Base Unit

48"Ø 5"

Drip Stone Landing

As Required See

CP&P MD 384.13

6" Min Extended Base

at Manufacturer's Option

Channel

See Note 14

8"

Eccentric Cone

4" Min

4'10"Ø

6"

1'-5"

4'10"Ø

2'-0"Ø

Opg

5"

TITLE

05-16-17

DATE

Precast 60"Ø Manhole for up to 36" Pipes

(MD 384.03)

20170629TED03

Plan View

(Precast Flattop)

MSHA Drainage Structures

Section View

Section View

(Precast Flattop)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Plan View

(Precast Flattop Reducer)

Section View

(Precast Flattop Reducer)

Section View

(Precast Eccentric Cone Reducer)

8" 8"

2'-0"

Adjustment Rings

See CP&P MD 384.01

Steps See

Note 12

Joints

See Note 9

Varies

1'-0" to 8'-0"

Riser Unit

Varies

2'-0" to 8'-0"

Base Unit

4'-0"Ø 5"

6" Min Extended Base

at Manufacturer's Option

Channel

See Note 14

8"

Eccentric Cone

4" Min

2'-0"Ø

Opg

6"

Drip Stone Landing

As Required See

CP&P MD 384.13

Flattop Reducer

20' Max Depth

Eccentric Cone

See CP&P MD 384.01

6'-0"Ø

6" 48"Ø

Opg

6'-0"Ø

2'-6"

8"

8"

1'-6"

48"Ø5" 5"

6"

6"

4'-0"

5'-0"Ø

5'-0"Ø 6"

48"Ø Riser

See CP&P MD 384.01

TITLE

05-16-17

DATE

Precast 72"Ø Manhole for up to 48" Pipes

(MD 384.05)

20170629TED04

Plan View

(Precast Flattop)

MSHA Drainage Structures

Section View

Section View

(Precast Flattop)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Plan View

(Precast Flattop Reducer)

Section View

(Precast Flattop Reducer)

Section View

(Precast Eccentric Cone Reducer)

8" 8"

2'-0"

Adjustment Rings

See CP&P MD 384.01

Steps See

Note 12

Joints

See Note 9

Varies

1'-0" to 8'-0"

Riser Unit

Varies

2'-0" to 8'-0"

Base Unit

4'-0"Ø 5"

6" Min Extended Base

at Manufacturer's Option

Channel

See Note 14

8"

Eccentric Cone

4" Min

2'-0"Ø

Opg

7"

Drip Stone Landing

As Required See

CP&P MD 384.13

Flattop Reducer

18' Max Depth

Eccentric Cone

See CP&P MD 384.01

7'-2"Ø

7" 48"Ø

Opg

7'-2"Ø

2'-7"

8"

8"

1'-7"

6'-0"Ø 7"

48"Ø Riser

See CP&P MD 384.01

TITLE

05-16-17

DATE

Precast 84"Ø Manhole for up to 60" Pipes

(MD 384.07)

20170629TED05

Plan View

(Precast Flattop)

MSHA Drainage Structures

Section View

Section View

(Precast Flattop)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Plan View

(Precast Flattop Reducer)

Section View

(Precast Flattop Reducer)

Section View

(Precast Eccentric Cone Reducer)

8" 8"

2'-0"

Adjustment Rings

See CP&P MD 384.01

Steps See

Note 12

Joints

See Note 9

Varies

2'-0" to 8'-0"

Riser Unit

Varies

2'-0" to 7'-8"

Base Unit

4'-0"Ø 5"

6" Min Extended Base

at Manufacturer's Option

Channel

See Note 14

8"

Eccentric Cone

4" Min

2'-0"Ø

Opg

8"

Drip Stone Landing

As Required See

CP&P MD 384.13

Flattop Reducer

18' Max Depth

Eccentric Cone

See CP&P MD 384.01

8'-4"Ø

8" 48"Ø

Opg

8'-4"Ø

2'-8"

8"

8"

1'-8"

7'-0"Ø 8"

48"Ø Riser

See CP&P MD 384.01

TITLE

05-16-17

DATE

Precast 96"Ø Manhole for up to 72" Pipes

(MD 384.09)

20170629TED06

Plan View

(Precast Flattop)

MSHA Drainage Structures

Section View

Section View

(Precast Flattop)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Plan View

(Precast Flattop Reducer)

Section View

(Precast Flattop Reducer)

Section View

(Precast Eccentric Cone Reducer)

8" 8"

2'-0"

Adjustment Rings

See CP&P MD 384.01

Steps See

Note 12

Joints

See Note 9

Varies

2'-8" to 8'-0"

Riser Unit

Varies

2'-0" to 7'-8"

Base Unit

4'-0"Ø

6" Min Extended Base

at Manufacturer's Option

Channel

See Note 14

8"

Eccentric Cone

4" Min

2'-0"Ø

Opg

9"

Drip Stone Landing

As Required See

CP&P MD 384.13

Flattop Reducer

18' Max Depth

Eccentric Cone

See CP&P MD 384.01

9'-6"Ø

9" 48"Ø

Opg

2'-9"

10"

8"

1'-9"

8'-0"Ø 9"

48"Ø Riser

See CP&P MD 384.01

5"

9'-6"Ø

TITLE

05-16-17

DATE

Precast 120"Ø Manhole for up to 84" Pipes

(MD 384.11)

20170629TED07

Plan View

(Precast Flattop)

MSHA Drainage Structures

Section View

Section View

(Precast Flattop)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Manhole sections meet ASTM C478 / AASHTO M199.

7) Lifting devices provided for handling at manufacturer's discrection.

8) Grade and slope adjustments to be completed in the field by contractor.

9) Joints per manufacturer's design, sealed in field by contractor.

10) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

11) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

12) Manhole steps provided at 16" spacing, aligned vertically.

13) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

14) Invert shaping to be constructed in field by contractor.

Plan View

(Precast Flattop Reducer)

Section View

(Precast Flattop Reducer)

Section View

(Precast Eccentric Cone Reducer)

8" 8"

2'-0"

Steps See

Note 12

Joints

See Note 9

Varies

2'-8" to 6'-0"

Riser Unit

5'-10"

Base Unit

4'-0"Ø

Channel

See Note 14

10"

Eccentric Cone

4" Min

Drip Stone Landing

As Required See

CP&P MD 384.13

11'-8"Ø

10" 48"Ø

Opg

2'-10"

10"

10'-0"Ø 10"

5"

Adjustment Rings

See CP&P MD 384.01

Eccentric Cone

See CP&P MD 384.01

48"Ø Riser

See CP&P MD 384.01

Flattop Reducer

15' Max Depth

TITLE

05-16-17

DATE

Precast Flattop Slab for 120"Ø Manholes

(MD 384.12)

20170516TED08

Plan View

(Precast Flattop)

MSHA Drainage Structures

Section View

Section View

(Precast Flattop)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min.

4) WWR reinforcement conforms to ASTM A1064, Grade 65 min.

5) Equivalent WWR may be used for rebar shown.

6) Reinforcing designed by CP&P.

7) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

Plan View

(Precast Flattop Reducer)

Section View

(Precast Flattop Reducer)

Section View

(Precast Eccentric Cone Reducer)

Plan View

Eccentric Cone

Drip Stone Landing

As Required See

CP&P MD 384.13

11'-8"Ø

2'-0"Ø

Opg

1'-10"

10"

10"

11'-8"

TITLE

05-17-17

DATE

Precast Drip Stone Landing for

48"Ø to 120"Ø Manholes (MD 384.13)

20170517TED02

Plan View

(Precast Flattop)

MSHA Drainage Structures

Section View

Section View

(Precast Flattop)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min.

4) WWR reinforcement conforms to ASTM A1064, Grade 65 min.

5) Equivalent WWR may be used for rebar shown.

6) Reinforcing designed by CP&P.

Plan View

(Precast Flattop Reducer)

Section View

(Placement of Drip Stone Landings)

Section View

(Precast Eccentric Cone Reducer)

Plan View

Eccentric Cone

Drip Stone Landing

As Required See

CP&P MD 384.13

Precast Drip Stone Landing Dimensions

Manhole Ø D T W X

48'' 4'-10'' 6'' 8'' 2'-5''

60'' 6'-0'' 8'' 8'' 3'-7''

72'' 7'-2'' 8'' 8'' 4'-9''

84'' 8'-4'' 8'' 8'' 5'-11''

96'' 9'-6'' 10'' 9'' 7'-0''

120'' 11'-8'' 10'' 10'' 9'-1''

D

X

W

1'-9"R

Opg

1'-9"R

Opg

T

Opg

Opg

Opg

Opg

Base

Riser

Riser

Riser

Drip Stone Landing

Drip Stone Landing

Flattop Reducer and Drip Stone Landing

for 60" to 120"Ø Manholes (See CP&P MD 384.15)

Eccentric Cone and Drip Stone Landing

for 60" to 72"Ø Manholes (See CP&P MD 384.17)

Flattop for 48"Ø Manhole

See CP&P MD 384.01

5'-4" Min

8'-0" Max

Typ Spacing

TITLE

05-17-17

DATE

Precast Combination Flattop Reducer & Drip

Stone Landing (60"-120")(MD 384.15)

20170517TED01

Plan View

(Precast Flattop)

MSHA Drainage Structures

Section View

Section View

(Precast Flattop)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,500 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min.

4) WWR reinforcement conforms to ASTM A1064, Grade 65 min.

5) Equivalent WWR may be used for rebar shown.

6) Reinforcing designed by CP&P.

Plan View

(Precast Flattop Reducer)

Section View

(Precast Flattop Reducer)

Section View

(Precast Eccentric Cone Reducer)

Plan View

Eccentric Cone

Drip Stone Landing

As Required See

CP&P MD 384.13

Precast Drip Stone Landing Dimensions

Manhole Ø D T W X

60 '' 6'-0'' 8'' 6'' 3'-6''

72 '' 7'-2'' 8'' 7'' 4'-7''

84'' 8'-4'' 8'' 8'' 5'-8''

96'' 9'-6'' 8'' 10'' 6'-9''

120'' 11'-8'' 10'' 10'' 8'-10''

D

X

W

T

Fill over Reducer

Varies per Diameter

See Specific Manhole

2'-0"R

Opg

2'-0"R

Opg

Fits 48"Ø Manhole

TITLE

05-16-17

DATE

Precast 48" Square Shallow Manhole

(MD 383.00)

20170629TED01

Plan View

(Precast Flattop)

MSHA Drainage Structures

Plan View

Section View

Section View

(Precast Flattop)

Notes

1) This design is intended for precast structures produced by CP&P only.

2) Concrete to be mix No.6 (4,000 psi) minimum.

3) Bar reinforcement conforms to ASTM A615 or A706, Grade 60 min. WWR reinforcement conforms to

ASTM A1064, Grade 65 min.

4) Reinforcing designed by CP&P.

5) Equivalent WWR may be used for rebar shown.

6) Lifting devices provided for handling at manufacturer's discrection.

7) Grade and slope adjustments to be completed in the field by contractor.

8) Pipe openings to be provided as required. For size, location, and invert elevations refer to construction plans.

9) Knockouts or holes for underdrain connections to be provided and located as directed on constructions plans.

10) Steps provided at 15" spacing, aligned vertically.

11) Invert shaping to be constructed in field by contractor.

12) Structure designed for HS-25 loading, according to AASHTO LRFD Bridge Design Specifications.

4'-0"

8"

6" or 8" Walls

8"

5'-10" Max

Riser Unit

6'-0" Max

Base Unit

6"

4" Min

5'-0"

5'-0"

or

5'-4"

5'-0" or 5'-4"

Steps See

Note 10

Standard Type D F&C

MD 383.61

2'-6"

Standard Type D F&C

MD 383.31 & 383.32

Keyway Joints

As Required

2'-0" Max

Adjustment Ring

MD 384.01

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