SECTION SHEET PILES. A. This section covers the contract item Sheet Piles. This work includes:

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1 SECTION SHEET PILES PART 1 GENERAL 1.01 DESCRIPTION A. This section covers the contract item Sheet Piles. This work includes: 1. Furnishing, coating, and installing steel sheet piles for the working pad as shown. 2. Implementing a program of instrumentation and monitoring prior to commencement of any pile driving activities to measure any deformation within the levee crest, embankment, and soil adjacent to the southeast end of the Knights Landing Outfall Gate structure during pile driving. B. Furnish all tools, equipment, labor, and materials required to construct the sheet pile wall RELATED SECTIONS A. Supplementary General Conditions, General Conditions, Division 1 sections, and Drawings apply to this section. This section may require direct correlation with the following sections of the contract: 1. Section Materials and Workmanship. 2. Section Miscellaneous Metalwork. 3. Section Coatings REFERENCES A. The following publications form a part of this specification to the extent referenced. Application of these publications shall conform to Document Interpretation of the Contract, Paragraph 2: 1. American Society for Testing and Materials (ASTM): a. ASTM A 6/A 6M Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling N-10

2 b. ASTM A 36 Standard Specification for Carbon Structural Steel. c. ASTM A 328 Standard Specification for Steel Piling. d. ASTM A 572 Standard Specification for High-Strength Low- Alloy Columbium-Vanadium Structural Steel. 2. American Welding Society (AWS): 1.04 SUBMITTALS a. AWS D1.1 Structural Welding Code Steel. A. Submit methods and detailed plans for installation of the sheet piles 10 days prior to any sheet pile driving activities, unless otherwise specified. 1. Plan for conducting surveying and monitoring of the levee crest elevation, levee cross section, and soil adjacent to the foundation of the Knights Landing Outfall Gate structure during pile driving activities. The plan shall include: a map indicating the locations of the network of survey points for approval by the Engineer prior to pile driving activities, an initial survey prior to pile driving activities, a final survey at the completion of pile driving activities, and a daily survey report during pile driving activities. A fixed refere nce point that is not located on the embankment and not susceptible to deformation shall be used to conduct the monitoring. 2. Information on the pile driving equipment, including the driver, crane, and floating barge for driving from the water. Methods and equipment to be used for pile driving operations, including proof of the adequacy of pile driving equipment. 3. Information on the pile driving subcontractor if used, including number of years in the business, and records of previous experience. 4. Pile dimensions, materials, and splices, including means of aligning and welding pile sections. 5. Pile plan showing locations, elevations and dimensions of installed piles, including cutoff details. 6. Certificate of compliance from pile manufacturer or fabricator stating that piles conform to the specifications. The certificate of compliance shall include test reports for tensile, chemical and any specified nondestructive tests N-10

3 7. Driving records of each sheet pile not later than 7 days after driving each sheet pile which have been compiled and attested to by a licensed professional engineer in the State of California. Include the following data: a. Project name and number. b. Name of Contractor. c. Sheet pile location and number. d. Type and size of equipment used. e. Rate of operation of pile driving equipment. f. Sheet pile dimensions. g. Elevation of tip. h. Elevation of head before and after cutoff. i. Ground elevation/channel bottom elevation. j. Sheet pile deviation. k. Unusual occurrences during pile driving. 8. At the conclusion of pile driving operations, the elevations and locations of the levee cross section and adjacent foundation soil surveying and monitoring shall be compiled in a report including any change in elevation and/or location of each survey point used in the levee crest embankment monitoring network PROJECT CONDITIONS A. Pile Driving: At the Contractor s expense, the Contractor shall repair any damage to the levee including but not limited to cracks and changes in the levee crest elevation and/or levee cross section as a result of pile driving as determined by the Engineer. Submit repair methods to the Engineer for approval prior to the start of any repair work DEFINITIONS A. Steel Sheet Pile Measurement: Vertical measurement for payment will be from sheet pile head cutoff elevation to sheet pile tip elevation. Horizontal measurement for payment will be the horizontal distance in feet covered by the piling, not including the indentations, as measured along the centerline axis of the sheet pile wall as shown N-10

4 PART 2 PRODUCTS 2.01 MATERIALS A. Steel Materials: 1. Sheet pile sections shall maintain the following properties: a. All sheet piles shall be structural steel conforming to ASTM A 572, Grade 50. b. All sheet piles shall be a hot-rolled Z-shaped section. c. Pile size and placement shall be as shown. 2. New interlocking sheet pile sections shall be used. All sheet pile sections furnished shall be straight and undamaged, clean, and free of potential groundwater contaminants. 3. All sheet piles shall be subjected to inspection and approval by the Engineer WORKMANSHIP A. Workmanship shall conform to Section Materials and Workmanship and Section Miscellaneous Metalwork COATINGS A. The top 10 feet of the sheet piles, water and land sides, shall be coated as specified in Section Coatings EQUIPMENT A. Pile Driver: 1. Sheet piles shall be driven with non-impact, vibratory hammers, or press-in equipment. 2. Pile driving equipment shall be sized such that the sheet piles can be driven with reasonable effort to the lengths required without damage N-10

5 PART 3 EXECUTION 3.01 DELIVERY, STORAGE, AND HANDLING A. After sheet pile lengths are verified, deliver materials to work site in such quantities and at such times to ensure continuity of pile driving operations and adherence to project schedule. B. Store sheet piles in orderly groups above ground and blocked to prevent distortion of members PRELIMINARY WORK A. Pile Length Markings: Mark each sheet pile length with horizontal lines at 5 foot intervals from the tip PILE CAPACITY A. Sheet piles shall be driven with approved driving equipment to the tip elevations as shown DRIVING A. General: 1. Furnish three sheet pile segments or 100 feet of spare sheet pile length, whichever is longer. Spare piling shall be in the possession of Contractor and readily available during driving operations. 2. The heads of all sheet piles shall be plane and perpendicular to the longitudinal axis of the sheet pile before the helmet is attached. 3. Approval of pile driving equipment relative to driving stress damage shall not relieve Contractor of the responsibility for sheet piles damaged because of misalignment of the leads, failure of cushion materials, failure of splices, malfunction of the pile hammer, or other improper construction methods. Sheet piles damaged for such reasons shall be replaced at Contractor s expense when the Engineer determines that the damage impairs the strength of the sheet pile. 4. Driving stresses in the sheet piles shall not exceed 90 percent of the minimum yield stress of the steel sheet pile. 5. Drive sheet piles to the position and line shown. After driving, inspect each sheet pile for position, vertical alignment, buckling or reduced dimensions at any point N-10

6 B. Tolerances: Use templates to hold the sheet piles within the specified tolerances. Drive sheet piles within following maximum tolerances. 1. Horizontal Alignment: The sheet pile head at cutoff elevation shall be within 1 inch of plan location, in both the transverse and longitudinal directions. 2. Plumb: Maintain 1/2 inch in 20 feet from vertical, measured when the sheet pile is above ground in leads. 3. Vertical Alignment: Sheet piles shall not be more than 1 inch out of plumb in 20 feet. a. Pulling laterally on sheet piles to correct misalignment, or splicing a properly aligned section on a misaligned section, will not be allowed. b. If the preceding location and/or alignment tolerances are exceeded, the Engineer will evaluate the extent of displacement. If, in the judgment of the Engineer, corrective measures are necessary, suitable measures shall be designed and taken by the Contractor UNSATISFACTORY SHEET PILES A. The method used in driving sheet piles shall not subject the sheet piles to excessive or undue abuse producing deformation of the steel. B. Misaligned sheet piles shall not be forced back into proper position. C. Sheet piles damaged during driving by reason of internal defects, or by improper driving, or driven out of their proper location, or driven below the designated cutoff elevation shall be corrected by the Contractor, without added compensation, by a method approved by the Engineer SPLICES A. The length of steel sheet pile may be built up in sections either before or during driving operations. The spliced sections shall each be of identical cross section. B. Splices shall be made by complete penetration butt welding the entire cross section in conformance with the requirements of AWS D1.1 and as specified in Section Miscellaneous Metalwork. C. The end of a steel sheet pile to be spliced shall be of sound and uniform section conforming to the tolerances for diameter, edge alignment, and roundness required to meet the welding requirements N-10

7 3.07 CUTOFF Field cutting of steel sheet pile ends shall be done using automated guided cutting equipment. Manual flame cutting shall not be used. A. Cutoff lengths of piling, rejected piling, and piling not used shall be removed from the work site as the Contractor s property INSTALLATION A. Section No. 1 sheet piles shall be installed as shown. PART 4 MEASUREMENT AND PAYMENT 4.01 MEASUREMENT A. Measurement for payment for the contract item Sheet Piles will be by the square foot, and will be the number of square feet of sheet piles placed in the work PAYMENT A. The contract price will be paid for SHEET PILES; which price shall include full compensation for all costs incurred under this section. END OF SECTION N-10