Section 334100 - Storm Utility Drainage Piping

Northern Kentucky University

Lot M Storm Sewer Replacement

Exclusively published and distributed by Architectural Computer Services, Inc. (ARCOM) for the AIA

SECTION 334100 - STORM DRAINAGE

This Section uses the term "Architect." Change this term to match that used to identify the design professional as defined in the General and Supplementary Conditions.

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Special Conditions and Division01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes gravity-flow, nonpressure storm drainage outside the building, with the following components:

Adjust list below to suit Project.

1. Cleanouts.

2. Drains, Catch Basins, Inlets, & Headwalls.

3. Precast concrete & Cast-in-place concrete manholes.

1.3 DEFINITIONS

Retain abbreviations that remain after this Section has been edited.

A. KTC: Kentucky Transportation Cabinet

1.4 PERFORMANCE REQUIREMENTS

A. Gravity-Flow, Nonpressure, Drainage-Piping Pressure Rating: 10-foot head of water. Pipe joints shall be at least silt tight, unless otherwise indicated.

1.5 SUBMITTALS

A. Product Data: For the following:

1. Pipe.

2. Cleanouts.

3. Trench Drains.

B. Shop Drawings: For the following:

1. Manholes: Include plans, elevations, sections, details, and frames and covers.

2. Catch Basins, Headwalls, Stormwater Inlets, and Concrete Precast Fittings. Include plans, elevations, sections, details, and frames, covers, and grates.

3. Stormwater Detention Structures: Include plans, elevations, sections, details, frames, grates, and covers.

Retain paragraph below if Drawings do not include detailed plans or if Project involves unusual coordination requirements.

C. Coordination Drawings: Show pipe sizes, locations, and elevations. Show other piping in same trench and clearances from storm drainage system piping. Indicate interface and spatial relationship between manholes, piping, and proximate structures.

Retain paragraph below if profiles are not shown on Drawings.

D. Profile Drawings (as necessary): Show system piping in elevation. Draw profiles at horizontal scale of not less than 1 inch equals 50 feet and vertical scale of not less than 1 inch equals 5 feet. Indicate manholes and piping. Show types, sizes, materials, and elevations of other utilities crossing system piping.

Retain paragraph below if Contractor is responsible for field quality-control testing.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Do not store plastic manholes, pipe, and fittings in direct sunlight.

B. Protect pipe, pipe fittings, and seals from dirt and damage.

Delete first paragraph below if only cast-in-place manholes are specified.

C. Handle manholes according to manufacturer's written rigging instructions.

D. Handle catch basins, headwalls, and stormwater inlets according to manufacturer's written rigging instructions.

1.7 PROJECT CONDITIONS

Delete this Article if no interruption of existing storm drainage service is required.

A. Interruption of Existing Storm Drainage Service: Do not interrupt service to facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary service according to requirements indicated:

1. Notify Project Manager/Owner’s Representative no fewer than two days in advance of proposed interruption of service.

2. Do not proceed with interruption of service without Project Manager/Owner’s Representative’s permission.

PART 2 - PRODUCTS

2.1 GENERAL:

A. Public Roadway Culverts: Refer to KTC 700

B. Conduit Under Pavement: Refer to KTC 700

C. Conduit Not Under Pavement: Refer to KTC 700

D. Private Drive Pipes and Bikeways: Refer to KTC 700

2.2 REINFORCED CONCRETE PIPE AND FITTINGS

Concrete pipe in this Article is available in many variations of class and wall thickness. Review the applicable standard before making selection.

Piping in paragraph below is available in 3 classes and in NPS4 to NPS36 (DN100 to DN900). Joints are gasket type.

Piping in paragraph below is available in 5 classes and 3 wall thicknesses, and in NPS12 to NPS144 (DN300 to DN3600). Not all classes and wall thicknesses are available. Joints are gasket type.

A. Per the latest version of the KTC Construction and Material Specifications and as noted on the Drawings.

2.3 DUCTILE IRON PIPE

A. Per KTC 700 conforming to ANSI/AWWA C151/A21.51, service and extra-heavy classes, for gasketed joints.

B. Gaskets: ANSI/AWWA C111/A21.11, rubber, compression type, thickness to match class of pipe.

Coordinate subparagraph and list below with Part2 "Manufacturers" Article. Retain "Available" for nonproprietary and delete for semiproprietary specifications.

Coordinate first subparagraph and list below with Part2 "Manufacturers" Article. Retain "Available" for nonproprietary and delete for semiproprietary specifications.

2.4 MANHOLES

A. Per the latest version of the KTC Construction and Material Specifications and the latest version of the KTC Standard Construction Drawings.

1. Diameter: 48 inches minimum, unless otherwise indicated on the drawings.

Retain first subparagraph below unless not required.

Retain one of two subparagraphs below if required.

Subparagraph below is optional for precast concrete manholes. Retain only if required and coating will be plant applied. Verify availability.

Retain subparagraph and associated subparagraphs below only if required. Buried manholes with risers to grade require manhole frames and covers only at top of riser.

2. Manhole Frames and Covers: Include lettering cast into cover, using wording equivalent to "STORM SEWER."

a. Frames and Covers must be heavy duty and supplied by contractor.

Subparagraph below is optional. Retain only if required and coating will be foundry applied. Verify availability.

2.5 CONCRETE

A. General: Cast-in-place concrete according to the latest version of the KTC Construction and Material Specifications and the latest version of the KTC Standard Construction Drawings

2.6 CATCH BASINS

A. Per the latest version of the KTC Construction and Material Specifications and the latest version of the KTC Standard Construction Drawings.

1. See drawings for schedule of specific types of catch basins

Retain one of first two subparagraphs below if required.

Retain paragraph and subparagraphs below for rectangular structures.

2. Frames and Grates:

a. Are to be heavy duty.

b. Are to be ADA compliant.

c. Are to be Bicycle safe.

d. Supplied by contractor.

Retain paragraph and subparagraphs above or paragraph and subparagraph below.

Retain paragraph below for round, manhole-type structures.

See Division05 Section "Metal Gratings" for fabricated-steel grating.

2.7 PIPE INLETS AND OUTLETS

Revise this Article to suit Project, and detail on Drawings. Delete first paragraph below if piping includes flared outlet fittings and concrete head walls are not required.

A. Headwalls: Per the latest version of the KTC Construction and Material Specifications and the latest version of the KTC Standard Construction Drawings.

B. Rock Channel Protection (Riprap): Per the latest version of the KTC Construction and Material Specifications and as indicated on the Drawings.

Retain one of three subparagraphs below or insert another grade. Refer to NSSGA's "Quarried Stone for Erosion and Sediment Control" for sizes.

Delete two paragraphs below unless these sizes of stone are required.

PART 3 - EXECUTION

3.1 EARTHWORK

A. General:

1. Conduit Under Pavement: Refer to The Kentucky Transportation Cabinet Construction and Material Specifications 700

2. Conduit Not Under Pavement: Refer to the Kentucky Transportation Cabinet Construction and Material Specifications 700.

B. Excavation For Utility Trenches:

1. Excavate trenches to indicated slopes, lines, depths, and invert elevations.

2. Excavate trenches to uniform widths to provide a working clearance on each side of pipe or conduit.

3. Excavate trench walls per KTC Item 603.05.

4. Where encountering rock or another unyielding bearing surface, carry trench excavation 6 inches below invert elevation to receive bedding course.

C. Utility Trench Backfill:

1. Place and compact bedding course as required by KTC specifications 700.

2. Backfill should consist of clean, inorganic soil free of any miscellaneous materials, cobbles, and boulders. The fill should be placed in uniform, thin lifts and carefully compacted to a unit dry weight equal to 100 percent in structure areas and at least 98 percent of the maximum dry weight below pavement areas. The moisture content of the fill should be maintained at +2 to +3 percent of the optimum moisture content as determined in the laboratory by the Standard Test Methods for Moisture-Density Relations of Soils (ASTM D 698). Water to be supplied by contractor. Fill should not be placed in a frozen condition or upon a frozen subgrade.

3. Structural backfill under pavement shall be dense grade aggregate.

4. Place backfill to the limits described and according to the compaction requirements of KTC 700. Place the backfill in the trench and embankment outside the trench uniformly on both sides of the conduit for all conduit installations.

5. Carefully compact material under pipe haunches and bring backfill evenly up on both sides and along the full length of utility piping or conduit to avoid damage or displacement of utility system.

6. All fill soils shall be placed in accordance with the article “Compaction of Soil Backfills and Fills” from the Earthwork Specification Section 312000.

7. Coordinate backfilling with utilities testing.

8. Fill voids with approved backfill materials as shoring and bracing, and sheeting is removed.

9. Place and compact final backfill of satisfactory soil material to final subgrade.

3.2 PIPING INSTALLATION

A. All installation shall be per the latest version of the KTC Construction and Material Specifications 700 and the latest version of the KTC Standard Construction Drawings.

B. General Locations and Arrangements: Drawing plans and details indicate general location and arrangement of underground storm drainage piping. Location and arrangement of piping layout take design considerations into account. Install piping as indicated, to extent practical. Where specific installation is not indicated, contact Landscape Architect.

C. Install piping beginning at low point, true to grades and alignment indicated with unbroken continuity of invert. Place bell ends of piping facing upstream. Install gaskets, seals, sleeves, and couplings according to manufacturer's written instructions for use of lubricants, cements, and other installation requirements.

D. Install manholes for changes in direction unless fittings are indicated. Use fittings for branch connections unless direct tap into existing sewer is indicated.

E. Install proper size increasers, reducers, and couplings where different sizes or materials of pipes and fittings are connected. Reducing size of piping in direction of flow is prohibited.

F. Install gravity-flow, nonpressure drainage piping according to the following:

Revise three subparagraphs below to suit Project.

1. Install piping pitched down in direction of flow, at minimum slope of 1 percent, unless otherwise indicated.

2. Install piping with 12inches minimum cover, unless otherwise indicated on the drawings. Notify Landscape Architect if less than 12 inches of cover will exist.

3. During construction protect installed piping from damage. Maintain manufacturers’ recommended minimum cover.

Retain subparagraph above or first subparagraph below.

Retain paragraph and subparagraphs below only if required.

3.3 PIPE JOINT CONSTRUCTION

A. All joint construction shall be per the latest version of the KTC Construction and Material Specifications 700 and the latest version of the KTC Standard Construction Drawings.

B. Join dissimilar pipe materials with pressure-type couplings, or concrete collar.

3.4 DRAIN INSTALLATION

A. Install type of drains in locations indicated.

1. Use medium-duty, top-loading classification drains in earth or unpaved foot-traffic areas.

2. Use heavy-duty, top-loading classification drains in paved foot-traffic, vehicle-traffic, roads, and service areas.

B. Install per manufacturer’s written recommendations.

3.5 MANHOLE INSTALLATION

A. General: Installation shall be per the latest version of the KTC Construction and Material Specifications and the latest version of the KTC Standard Construction Drawings.

Cast-in-place manholes in paragraph below require data or details on Drawings.

Retain first paragraph below if paint is to be field applied to exterior surfaces of cast-in-place concrete manholes.

B. Set tops of frames and covers flush with finished surface of manholes that occur in pavements. Set tops 3 inches above finished surface elsewhere, unless otherwise indicated.

3.6 CATCH BASIN INSTALLATION

A. General: Installation shall be per the latest version of the KTC Construction and Material Specifications and the latest version of the KTC Standard Construction Drawings.

B. Set frames and grates to elevations indicated.

3.7 STORMWATER INLETAND OUTLET INSTALLATION

A. General: Installation of Headwalls and Rock Channel Protection shall be per the latest version of the KTC Construction and Material Specifications and the latest version of the KTC Standard Construction Drawings.

3.8 CONCRETE PLACEMENT

A. Place cast-in-place concrete according to ACI318/318R.

3.9 CONNECTIONS

A. Connect nonpressure, gravity-flow drainage piping in building's storm building drains specified in Division22 Section "Facility Storm Drainage Piping."

3.10 FIELD QUALITY CONTROL

A. Inspect interior of piping to determine whether line displacement or other damage has occurred. Inspect after approximately 24 inches of backfill is in place, and again at completion of Project.

1. Defects requiring correction include the following:

a. Alignment: Less than full diameter of inside of pipe is visible between structures.

b. Deflection: Flexible piping with deflection that prevents passage of ball or cylinder of size not less than 92.5 percent of piping diameter.

c. Crushed, broken, cracked, or otherwise damaged piping.

2. Replace defective piping using new materials, and repeat inspections until defects are within allowances specified.

3. Re-inspect and repeat procedure until results are satisfactory.

B. Test new piping systems, and parts of existing systems that have been altered, extended, or repaired, for leaks and defects.

1. Do not enclose, cover, or put into service before inspection and approval.

2. Test completed piping systems according to authorities having jurisdiction.

3. Schedule tests and inspections by authorities having jurisdiction with at least 24 hours' advance notice.

Retain test in first subparagraph and associated subparagraphs below only if required.

C. Replace defective piping using new materials, and repeat testing until defect is within allowances specified.

3.11 CLEANING

A. Clean interior of piping of dirt and superfluous materials.

END OF SECTION 334100

STORM DRAINAGE / 334100 - 6