27-Sec 33 44 14 Storm Inlets Catch Basins Endwalls End Sections.pdf

STORM INLETS, CATCH BASINS, ENDWALLS, END SECTIONS

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SECTION 33 44 14

PART 1 - GENERAL

1.01. SECTION DESCRIPTION

A. The Work of This Section Includes, but is not limited to:

1. Storm drainage curb inlets

2. Storm drainage catch basins

3. Storm drainage pipe endwalls

4. Pipe culvert end sections

5. Storm drainage Outlet Control Structures

1.02 RELATED SECTIONS

A. Related Work Specified Elsewhere:

1. Section 01 57 13: Soil Erosion and Sediment Control

2. Section 31 23 33: Excavation, Backfill and Compaction

3. Section 31 37 16: Energy Dissipator

4. Section 32 92 00: Finish Grading, Seeding and Sodding

5. Section 32 93 02: Exterior Planting

6. Section 33 41 00: Storm Drain Pipe

1.03 QUALITY ASSURANCE

A. Reference Standards:

1. American Society for Testing and Materials (ASTM):

A36 Specification for Structural Steel A47 Specification for Malleable Iron Castings A536 Specification for Ductile Iron Castings C32 Specification for Sewer and Manhole Brick C270 Specification for Mortar for Unit Masonry

2. Pennsylvania Department of Transportation

Publication 408 Specifications Publication #72 Standards for Roadway Construction

B. Acceptable Manufacturer:

1. Precast structures, and frames and covers shall be provided by a firm regularly engaged in the manufacture of such products of the types, materials and sizes required, whose products have been in satisfactory use in similar service for not less than five (5) years.

2. Precast structures shall be provided by one of the following manufacturers or approved equal.

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• Monarch Precast Concrete Corporation

• Modern Concrete Septic Tank Company

3. Frames and grates shall be provided by one of the following manufacturers or approved equal.

• Neenah Foundry Company

• E.A. Quirin Machine Ship, Inc.

• East Jordan Iron Works, Inc.

1.04 SUBMITTALS

A. Shop Drawings:

1. Submit detailed shop drawings of inlet units, end walls, and end sections including reinforcing steel details.

1.05 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Precast Concrete Units:

1. After fabrication and curing, transport the units to the job site. Protect until required for installation.

2. Handle to avoid damage to surfaces, edges and corners and to avoid creation of stresses within the units.

B. Other Requirements:

1. Section 01 60 00 also addresses transportation and handling along with storage and protection of materials and equipment.

PART 2 - PRODUCTS

2.01 MATERIALS

A. Coarse Aggregate Subbase:

1. PADOT Number 2A, Type C, Section 703.2, Publication 408 Specifications.

B. Brick: ASTM C32, grade SS, solid

C. Masonry Mortar: ASTM C270, Type S

D. Malleable Iron Castings: ASTM A47, Grade 35018. Domestic

E. Ductile Iron Castings: ASTM A536, Grade 60-40-18. Domestic

F. Structural Grade Carbon Steel: ASTM A36

G. Concrete: Section 03 30 53

2.02 FABRICATIONS

A. Precast Cement Concrete Units:

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1. Comply with the requirements of Section 713.2(d), Publication 408 Specifications

B. Inlets and Catch Basins:

1. Comply with the type, design and dimensions shown on the Drawings and in accordance with Publication #72 (RC-45 & 46) for precast units.

C. End Walls:

1. Comply with the type, design and dimensions shown on the Drawings and in accordance with Publication #72 (RC-31) for precast units.

D. Pipe Culvert End Sections:

1. Comply with the type, design and dimensions shown on the Drawings and in accordance with Publication #72 (RC-33).

PART 3 - EXECUTION

3.01 EXCAVATION

A. Perform excavation in conjunction with storm pipe installation, Section 33 41 00 and as specified in Section 31 23 33.

B. Locate inlets, catch basins, endwalls, end sections, and outlet control structures as indicated on the Drawings.

3.02 CONSTRUCTION

A. Construct inlets and catch basins and manholes of either precast sections or of cast-in-place construction in compliance with the type, design and dimensions shown on the Drawings and in accordance with Publication #72 (RC-34).

l. Place precast units on a 12" coarse aggregate subbase placed in 4" layers compacted to 95% of dry weight density.

2. Construct cast-in-place units on undisturbed earth.

3. Shape bottom of inlet boxes to channel flow of water to the outlet pipe and to prevent water from standing in box.

4. Unless units are cast-in-place, use precast concrete sections or brick to adjust to grade. Mortar in place.

B. Construct endwalls of either precast units of cast-in-place construction in compliance with the type, design and dimensions shown on the Drawings and in accordance with Publication #72

(RC-31).

1. Cast-in-place endwalls shall be monolithically cast reinforced concrete units.

C. Do not permit pipes to project more than 2" into inlets. Do not expose end of pipe through faces of endwalls.

D. Where indicated on the Drawings, provide pipe culvert end sections in compliance with the design and dimensions shown on the Drawings and in accordance with Publication #72

(RC-33).

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E. Where indicated, construct energy dissipator in accordance with Section 31 37 16.

3.03 BACKFILLING

A. Backfill structures only after examination by the Resident Project Representative.

B. Perform backfilling and compaction as specified in Section 31 23 33.

END OF SECTION