334613 Foundation Drainage - 7 pages.pdf

Des Moines VAMC, Des Moines IA VA Project 636A6-23-101

Construct Steam Tunnel 02/07/2025

3600 30th Street Revision 1

Des Moines, IA 50310

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FOUNDATION DRAINAGE

SECTION 33 46 13

FOUNDATION DRAINAGE

PART 1 - GENERAL

1.1 DESCRIPTION

This section specifies materials and procedures for construction of foundation drainage systems, including installation, backfill, and cleanout extensions, to a point of connection to storm sewer.

1.2 RELATED WORK

A. Excavation, Trench Widths, Pipe Bedding, Backfill, Shoring, Sheeting, Bracing: Section 31 20 11, EARTHWORK (SHORT FORM).

B. Materials testing and inspection during construction: Section 01 45 29, TESTING LABORATORY SERVICES.

C. Submittals: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA AND SAMPLES.

D. Tunnel Waterproofing: Section 07 12 00 BUILT-UP BITUMINOUS

WATERPROOFING.

1.3 DEFINITIONS

Subdrainage: Foundation drainage system that collects and removes subsurface or seepage water from building or tunnel foundations into the on-site storm sewer system.

1.4 ABBREVIATIONS

A. PE: Polyethylene plastic.

B. PVC: Polyvinyl chloride plastic.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Do not store plastic pipe or fittings in direct sunlight.

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

1.6 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referred in the text by basic designation only.

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

A48-03..................Gray Iron Castings

C14-07..................Nonreinforced Concrete Sewer, Storm Drain, and

Culvert Pipe

C33/C33M-11.............Concrete Aggregates

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C443-10.................Joints for Concrete Pipe and Manholes, Using

Rubber Gaskets

C578-10a................Rigid, Cellular Polystyrene Thermal Insulation

C1173-08................Flexible Transition Couplings for Underground

Piping Systems

D448-08.................Sizes of Aggregate for Road and Bridge

Construction

D1621-10................Standard Test Method for Compressive Properties of Rigid Cellular Plastics

D2235-04(2011)..........Solvent Cement for Acrylonitrile-Butadiene-

Styrene (ABS) Plastic Pipe and Fittings

D2321-11................Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications

D2751-05................Acrylonitrile-Butadiene-Styrene (ABS) Sewer

Pipe and Fittings

D3034-08................Type PSM Poly (Vinyl Chloride) (PVC) Sewer Pipe and Fittings

D3350-10a...............Polyethylene Plastic Pipe and Fittings Material

D4491-99a(2009).........Test Methods for Water Permeability of

Geotextiles by Permittivity

D4716-08................Test Method for Determining the (In-plane) Flow

Rate per Unit Width and Hydraulic

Transmissivity of a Geosynthetic Using a

Constant Head

D5926-09................Poly (Vinyl Chloride) (PVC) Gaskets for Drain, Waste, and Vent (DWV), Sewer, Sanitary, and

Storm Plumbing Systems

D6707-06 (2011).........Circular-Knit Geotextile for Use in Subsurface

Drainage Applications

F405-05.................Corrugated Polyethylene (PE) Pipe and Fittings

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F477-10.................Elastomeric Seals (Gaskets) for Joining Plastic

Pipe

F2648-10................2 to 60 Inch Annular Corrugated Profile Wall

Polyethylene (PE) Pipe and Fittings for Land

Drainage Applications

1.7 WARRANTY

The Contractor shall remedy any defect due to faulty material or workmanship and pay for any damage to other work resulting therefrom within a period of one year from final acceptance. Further, the

Contractor will furnish all manufacturer's and supplier's written guarantees and warranties covering materials and equipment furnished under this Contract.

PART 2 - PRODUCTS

2.1 FACTORY-ASSEMBLED PRODUCTS

A. Standardization of components shall be maximized to reduce spare part requirements.

B. Contractor shall guarantee performance of assemblies of components, and shall repair or replace elements of the assemblies as required to deliver specified performance of the complete assembly.

2.2 COMPATIBILITY OF RELATED EQUIPMENT

Equipment and materials installed shall be compatible in all respects with other items being furnished and with existing items so that the result will be a complete and fully operational system that conforms to contract requirements.

2.3 PERFORATED-WALL PIPES AND FITTINGS FOR TUNNELS AND VAULTS

A. Perforated PE Pipe and Fittings:

1. Pipe shall be ASTM D2648, Type CP; corrugated, for coupled joints.

2. Couplings: Manufacturer's standard.

B. Perforated PVC Sewer Pipe and Fittings shall be ASTM D3034.

2.4 SOLID-WALL PIPES AND FITTINGS

A. PVC Sewer Pipe and Fittings: ASTM D3034.

1. Gaskets: ASTM F477.

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2.5 SPECIAL PIPE COUPLINGS

A. Comply with ASTM C1173 for joining underground non-pressure piping.

Include ends of same sizes as piping to be joined and corrosion-resistant metal tension band and tightening mechanism on each end.

2.6 CLEANOUTS

A. Cleanouts: Cast-iron parts shall conform to ASTM A48. Lid shall be secured, scoriated, Light Loading class in landscaped areas. Cleanouts shall not be installed in paved surfaces.

B. Cleanout PVC Extension shall conform to ASTM D3034. PVC extensions shall have watertight joints and long sweep elbow fittings. PVC cleanout shall have threaded plug and threaded pipe hub.

2.7 FLOOR DRAINS

A. All floor drains within the proposed vaults shall be 4” diameter cast iron drains.

2.8 SOIL MATERIALS

A. Drainage Material

1. Bedding shall be crushed stone, 3/4 inch (20 mm) to No. 4 per ASTM

D448, at a minimum or as per geotechnical recommendations.

B. Concrete Sand shall be ASTM C33.

2.9 GEOTEXTILE FILTER FABRICS

A. Geotextile fabric shall conform to ASTM 6707. Elongation will be greater than 50 percent and the flow rate shall range from 110 to 330 gpm/sq.

ft. (4480 to 13440 L/min. per sq. m).

1. Structure Type shall be woven, monofilament or multifilament.

2. Style(s) shall be Flat.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine surfaces and areas for suitable conditions where subdrainage systems are to be installed.

B. If subdrainage is required for landscaping, locate and mark existing utilities, underground structures, and aboveground obstructions before beginning installation and avoid disruption and damage of services.

C. Proceed with installation only after unsatisfactory conditions have been corrected.

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3.2 PIPING APPLICATIONS

A. Drain Tile Piping installed parallel to the tunnel floor slab 12” away from the edge of slab shall be:

1. Perforated PE pipe and fittings, couplings, and coupled joints.

B. Underslab PVC Conveyance Piping shall be:

1. PVC SDR 26 sewer pipe and fittings, couplings, and coupled joints.

C. Vertical Riser Piping connections between Drain Tile Piping and PVC

Conveyance Piping shall be installed with two 90-degree PVC bends (one at each end).

D. Floor Drains shall be constructed with 4” PVC SDR 26 with a cast iron floor drain at the location and elevation shown in the Civil Plans.

3.3 CLEANOUT APPLICATIONS

A. In Underground Subdrainage Piping:

1. At Grade in Earth shall be PVC cleanouts.

2. At Grade cleanouts shall not be allowed in Paved Areas.

3.4 PIPING INSTALLATION

A. Install piping beginning at low points of system, true to grades and alignment indicated, with unbroken continuity of invert. Bed piping with full bearing in filtering material. Install gaskets, seals, sleeves, and couplings according to manufacturer's written instructions and other requirements indicated.

1. Drain Tile Piping installed parallel to the tunnel floor slab 12” away from the edge of slab shall match the slope of the adjacent tunnel or vault at a minimum slope of 0.0%. Do not install Drain Tile

Piping with negative slope in the direction of the drainage.

2. Underslab PVC Conveyance Piping: Install piping pitched down in direction of flow, at a slopes indicated in the Civil Plans, and in no case less than 0.5 percent..

3. Lay perforated pipe with perforations down.

4. Excavate recesses in trench bottom for bell ends of pipe. Lay pipe with bells facing upslope and with spigot end entered fully into adjacent bell.

B. Use increasers, reducers, and couplings made for different sizes or materials of pipes and fittings being connected. Reduction of pipe size in direction of flow is prohibited.

C. Install PE piping and PVC piping according to ASTM D2321.

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3.5 PIPE JOINT CONSTRUCTION

A. All connections must be made with pressure ratings at least equal to piping rating.

B. Join perforated PE pipe and fittings with couplings for soil-tight joints according to ASTM D2321.

C. Join PVC pipe and fittings according to ASTM D2729.

D. Special Pipe Couplings: Join piping made of different materials and dimensions with special couplings made for this application. Use couplings that are compatible with and fit materials and dimensions of both pipes.

3.6 CLEANOUT INSTALLATION

A. Cleanouts for Tunnel and Vault Foundation Subdrainage:

1. Install cleanouts from piping to grade. Locate cleanouts at beginning of piping run and at locations shown on the plans. Install fittings so cleanouts open in direction of flow in piping.

2. Cleanouts shall not be installed in vehicular-traffic areas.

3. In nonvehicular-traffic areas, use NPS 4 (DN 100) PVC pipe and fittings for piping branch fittings and riser extensions to cleanout.

Set cleanout frames and covers in a cast-in-place concrete anchor, 12 by 12 by 4 inches (300 by 300 by 100 mm) in depth. Set top of cleanout plug 1 inch (25 mm) above grade.

3.7 CONNECTIONS

A. Where indicated in the plans, connect low elevations of foundation and underslab drainage to existing storm sewer piping.

3.8 IDENTIFICATION

A. Castings for Floor Drains inside the tunnel shall be identified as “TO

STORM SEWER” with lettering of at least 1” text height permanently stamped into the casting.

3.9 FIELD QUALITY CONTROL

Testing: After installing drainage course to top of piping, test drain piping with water to ensure free flow before backfilling. Remove obstructions, replace damaged components, and repeat test until results are satisfactory.

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3.10 CLEANING

Clear interior of installed piping and structures of dirt and other superfluous material as work progresses. Maintain swab or drag in piping and pull past each joint as it is completed. Place plugs in ends of uncompleted pipe at end of each day or when work stops.

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