60 80 00 Flood Gate-Rev.pdf

Lower Rio Grande Flood Control Project – Interior Floodways Rehabilitation of North Floodway (North and South Levees) and Arroyo Colorado Floodway (North Levee) Hidalgo and Cameron Counties, Texas

FLOODGATE

USIBWC Contract No.: IBM09B0004 Page 60.80.00 - 1

SPECIFICATION 60 80 00

This specification includes requirements for the installation and construction of flood gates within the work area, and includes the following:

1.0 General

2.0 Materials & Equipment

3.0 Construction Methods

4.0 Measurement and Payment

PART 1 - GENERAL

1.1 RELATED DOCUMENTS, CONTRACT CLAUSES, & SPECIFICATIONS

The following may not include all related documents, contract clauses, & technical specifications, and does not relieve the Contractor of the responsibility of performing work associated with this specification in accordance with all terms of the Contract herein.

A. Related documents: As described in paragraph 1.2 of SPECIFICATION 01 01 00.

B. Contract: Section I, 52.236-21“Specifications and Drawings for Construction”

C. Technical Specifications:

• SPECIFICATION 60 20 00, “Concrete Structures”

• SPECIFICATION 60 21 00, “Hydraulic Cement Concrete”

• SPECIFICATION 60 40 00, “Reinforcing Steel”

• SPECIFICATION 60 42 00, “Metal for Structures”

• SPECIFICATION 60 45 00, “Galvanizing”

• SPECIFICATION 60 46 00, “Cleaning and Painting Steel”

D. References:

• American Concrete Institute (ACI) 318-08 Building Code Requirements for Structural Concrete

• American Society for Testing and Materials (ASTM) A240 / A240M - 09a Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications.

• ASTM A615 / A615M - 09 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement.

• American Welding Society (AWS) A5.10/A5.10M 1999(R2007) Specification For Bare Aluminum And Aluminum-Alloy Welding Electrodes And Rods.

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1.2 GENERAL

In general, the Contractor shall furnish and install floodgates at the locations shown in the plans. The flood gate shall be a self-rising flood wall without electrical or hydraulic motors or a manual removable type as specified in the plans. The floodgate shall allow safe passage of vehicular and human traffic while in its dry or "Closed" position and shall hinder the passage of floodwater and resist hydrostatic pressures while in its operating or "Open" position.

PART 2 – MATERIALS & EQUIPMENT

2.1 MATERIALS

The Contractor shall use materials that conform to requirements of the following Specifications:

• SPECIFICATION 60 20 00, “Concrete Structures”

• SPECIFICATION 60 21 00, “Hydraulic Cement Concrete”

• SPECIFICATION 60 40 00, “Reinforcing Steel”

• SPECIFICATION 60 42 00, “Metal for Structures”

• SPECIFICATION 60 45 00, “Galvanizing”

• SPECIFICATION 60 46 00, “Cleaning and Painting Steel”

2.2 PRODUCT

A. Automatic Gates. The Contractor shall provide floodgate components from a manufacturer with a product equal to the requirements in this specification such as FloodBreak Automatic Floodgates, LLC (2800 Post Oak Boulevard, Suite 5850, Houston, Texas 77056; phone – 713.980.6610, fax – 713.629.9936; www.floodbreak.com or compliance-confirmed equal.

B. Manual Removable Gates. The Contractor provide the manual removable gates in accordance with engineering drawings provided and this specification.

2.3 AUTOMATIC FLOODGATE COMPONENTS

Minimum component requirements for the automatic floodgate shall include the following in accordance with the Contract Drawings and this specification:

A. Concrete: Class C concrete.

B. Pan Inlet Grate:

(1) Vehicular Grates: 3/8-inch by 1-inch (10 millimeter (mm) x 25mm) flat aluminum bar spaced 3/8-inch (10mm), and

(2) Pedestrian Grates: 1/8-inch by 1-inch (3mm x 25mm) flat aluminum bar spaced 1/8-inch (3mm).

C. Gaskets: 3/16-inch (4.8mm) ethylene propylene dimonomer (EPDM) rubber

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D. Gate Support Tubing:

(1) Material: 3/16-inch (4.8mm) structural 2-inch by 2-inch (51mm x 51mm) square extrusions - Grade 6063 aluminum, and

(2) Minimum Yield (Fy): 20 kilo pounds per square inch (ksi).

E. Hardware

(1) Concrete Anchor Bolts:

(a) Material: ½-inch (13mm) diameter ASTM A240/240M Grade 304 Stainless Steel, and

(b) Minimum Yield (Fy): 40 ksi.

(2) Hinge Pins:

(a) Material: ½-inch (13mm) diameter ASTM A240/240M Grade 304 Stainless Steel, and

(b) Minimum Yield (Fy): 40 ksi.

(3) Bolts:

(a) Material: Countersunk ASTM A240/240M Grade 304 Stainless Steel bolts, and

(b) Minimum Yield (Fy): 40 ksi.

(4) Retention Arm Anchors:

(a) Material: 3/8-inch (13mm) ASTM A240/240M Grade 304 Stainless Steel, and

(b) Minimum Yield (Fy): 40 ksi, and

(5) Welding Wire: Aluminum Wire - ER 4343 AWS A5.10 3/32.

F. Pan Support Tubing

(1) Material: ¼-inch (6mm) structural 2-inch by 2-inch (51mm x 51mm) square extrusions - Grade 6063 Aluminum, and

(2) Minimum Yield (Fy): 20 ksi.

G. Pan

(1) Material: ¼-inch (6mm) smooth plate - Grade 5052 Aluminum, and

(2) Minimum Yield (Fy): 25 ksi.

H. Gasket Flanges

(1) Material: ¼-inch (6mm) 6061-T6 aluminum, and

(2) Minimum Yield (Fy): 40 ksi.

I. Retention Arm

(1) Material: ½--inch (13mm) 6061-T6 Aluminum flat stock, and

(2) Minimum Yield (Fy): 40 ksi.

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J. Structural Angles

(1) Material: ¼-inch (6mm) structural 2-inch by 2-inch (51mm x 51mm) angles - 6061-T6 aluminum, and

(2) Minimum Yield (Fy): 40 ksi.

2.4 MANUAL FLOODGATE COMPONENTS

Minimum component requirements for the manual floodgate shall include the following and shall be in accordance with the Contract Drawings and this specification:

A. Design criteria shall be in accordance with ACI 318-08.

B. All concrete shall be Class “C”.

C. All reinforcing steel shall be ASTM A615, Grade 60.

D. The permanent support structure for the removable wall shall be constructed in accordance with SPECIFICATION 60 23 00, Floodwalls and Retaining Walls, paragraph 3.7.

E. Reconstruction of railroad crossing shall be re-planking with precast concrete panels with rubber headers along the rails in accordance with the standards of Union Pacific Railroad.

2.5 SUBMITTALS

A. Product Data: Manufacturer's data sheets on each product to be used, including:

(1) Preparation instructions and recommendations.

(2) Storage and handling requirements and recommendations.

(3) Installation methods.

B. Shop Drawings: Submit plan, section, elevation and perspective drawings as necessary to depict proper placement, installation and operation methods for each floodgate to be installed, C. Railroad Re-planking Details. The Contractor shall provide drawings signed and sealed by a Texas-registered professional engineer showing the minimum details as follows:

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PART 3 – CONSTRUCTION METHODS

The Contractor shall construct the floodgates in accordance with details, alignment, and grade designated on the Contract Drawings.

3.1 PREPARATION

Do not begin installation until substrates have been properly prepared; if substrate preparation is the responsibility of another installer, notify the COR of unsatisfactory preparation before proceeding. Clean surfaces thoroughly prior to installation; prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.

3.2 INSTALLATION - GENERAL

The Contractor shall fabricate components and install floodgates in accordance with manufacturer's instructions, and following the standards, tolerances and guidelines noted in the Contract Drawings and the manufacturer’s drawings.

3.3 INSTALLATION – AUTOMATIC FLOODGATES

A. Tighten all bolts to torque specifications determined by the manufacturer’s Engineer of Record.

B. All welding to be performed by a certified welder in accordance with AWS standards and guidelines.

C. Concrete: Encapsulate pan and extending bars in a monolithic concrete pour with a depth of no less than 11 inches (280mm) and extending a lateral distance from the pan no less than 12 inches (305mm) in any direction.

D. Pan: Fabricate pan to include a drainage trough running parallel to and for the entire length of the gate at the approximate centerline of the pan. Trough will have a depth of 2 inches (51mm) and a width of 6 inches (152mm).

E. Drainage: Connect 4 inch (102mm) diameter drain to the drainage trough centered within the pan in all directions.

F. Gate:

(1) At panel joints, stitch weld every 5 inches (127mm) on center with a 3/16-inch fillet weld 3 inches (76mm) long.

(2) At panel splices, place splice flanges within 12 inches (305mm) of adjacent retention arms.

G. Hinges and Anchors:

(1) Seam-weld retention arm brackets to gate and pan; include stiffener plates on each side.

(2) Attach retention arm anchors through pan and into concrete with ½-inch (13mm) diameter anchor bolts.

H. Wiper Wall: Manufacturer to provide 3/8-inch (10mm) aluminum wiper wall to maintain contact with gate seal and protective gaskets at all points of operation.

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3.4 INSTALLATION – MANUAL FLOODGATES

The Contractor shall construct the permanent support structure for the removable wall as shown in the plans. The removable wall shall be received on the project site to test the installation / fit of the removable wall between the permanent support structure. The Contractor shall ultimately deliver the removable wall to a storage location as designated by the COR.

3.5 PROTECTION

The Contractor shall protect installed floodgate and/or floodgate parts until completion of project; touch-up, repair or replace damaged products before Substantial Completion.

3.6 CONCRETE COMPONENTS

The Contractor shall provide concrete portions of foundation and walls in accordance with the requirements of SPECIFICATION 60 20 00, “Concrete Structures,” and requirements herein; construct forms so that the post line and grade can be checked after the concrete has been placed but before initial set; do not disturb the form alignment during finish floating of the wall tops; exercise particular care in other construction to avoid disturbing or vibrating the foundations with the newly placed walls.

PART 4 – MEASUREMENT AND PAYMENT

4.1 MEASUREMENT

The Work performed under this Specification will be measured by each complete floodgate.

4.2 PAYMENT

The work performed and materials furnished in accordance with this Specification and measured as provided under “Measurement” will be paid for at the unit price bid for “Flood Gate (Type) (Size)” This price will be full compensation for providing, constructing, and installing floodgates and posts, furnishing, preparing, and placing concrete, expansion joint material, reinforcing steel, structural steel, aluminum, cast steel, anchor bolts, tie-in anchorage to approach slab or bridge, anchorage devices for attaching floodgates, and all other materials required in the finished gates; removal and disposal of salvageable materials; construction of permanent support structures, including footings; re-planking; and hardware, paint and painting of metal components, concrete finishes, galvanizing, equipment, labor, tools, and incidentals.

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