501.01 501-1 DIVISION 500 STRUCTURES SECTI ON 501 STEEL SHEET PILING DESCRIPTION
501.01 This work consists of furnishing and driving corrugated steel sheeting or steel sheet
piling per these specifications and in conformity to the lines and grades shown on the plans or established. MATERIALS
501.02 Type I Steel Sheet Piling shall be used where shown on the plans and shall be a
corrugated steel sheeting non- galvanized interlocking type, at least 8 gauge in thickness with a minimum section modulus of 1.300 cubic inches per unit of 12 inches in width. Steel sheeting shall confo rm to ASTM A857, Grade 36 for 7 gauge or 8 -gauge steel, Grade 30 for heavier gauges. The sides for each piece of sheeting shall be furnished with an interlock that is continuous for the full length of the sheeting. The interlock shall have an opening of sufficient width to allow free slippage of the adjoining sheet.
501.03 Type II Steel Sheet Piling shall be of the type and weight shown on the plans and shall
conform to the requirements of AASHTO M 202 or AASHTO M 270, Grade 50. CONSTRUCTION REQUIREMENTS
501.04 Steel sheet piling shall be driven to form a tight bulkhead. A driving head shall be used
and any piling that does not provide a tight bulkhead shall be pulled and replaced at the Contractor's expense. Steel sheet piling that is full length as shown on the plans and is required to be driven below the specified cut -off elevation shall be spliced with additional steel sheet piling with a full penetration butt weld. Splicing will be limited to three per pil e sheet. A splice shall not be less than 3 feet from another splice on the same pile. Welding shall conform to the applicable requirements of ANSI/AWS D 1.1. Where specified on the plans, sheet piling shall be painted as described in subsection 509.24. METHOD OF MEASUREMENT
501.05 Steel sheet piling will be measured by the square foot, complete in place and accepted,
to cut -off elevation. Each approved splice will be measured as an additional 3 square feet of sheet pile. The area of sheet piling cut -off to be measured will be those random areas of sheet piling that result from cutting off the tops of driven sheet piling and not used in the work. 501.06 501-2 BASIS OF PAYMENT
501.06 The accepted quantities of steel sheet piling will be paid for at the contract unit
price per square foot of each type used. Payment will be made under: Pay Item Pay Unit Steel Sheet Piling (Type ) Square Foot Sheet piling cut -offs 10 square feet or less in area will be paid for at the contract unit price less 20 percent. These cut -offs shall become the property of the Contractor. Sheet pile cut -offs greater than 10 square feet will not be paid for. 502.01 502-1 SECTION 502 PILING DESCRIPTION
502.01 This work consists of furnishing and driving foundation piles, other than sheet piling.
MATERIALS
502.02 Rolled Structural Steel Piles . Steel used in rolled structural steel piles shall conform to
the requirements of ASTM A572/A572M or ASTM A992/A992M. Sections of piles shall be of “H” or “W” shape. The flange projection shall not exceed 14 times the minimum thickness of metal in either the flange or the web, and flange widths shall not be less than 80 percent of the depth of the section. The nominal depth in the direction of the web shall not be less than 8 inches. Flanges and web shall have a minimum nominal thickness of 0.375 inches o r greater.
502.03 Steel Pipe Piles . Steel pipe piles shall conform to the requirements of ASTM A252,
Grade 2 or higher. Ends of closed -end pipe piles shall be closed with a flat plate, forged or cast steel conical point, or other end closure design approved by the Engineer. End plates used o n closed -end pipe piles shall be made of ASTM A36/A36M steel or better. End plates shall have a minimum thickness of 0.75 inches. The diameter and thickness of the end plates shall be as shown on the plans. The end plate shall be cut flush with the oute r pile wall. The end of the pipe shall be beveled before welding to the end plate using a partial penetration groove weld.
502.04 Protective Coatings . If there is a required protective coating, the Contractor shall
restore or repair any damage to the coating. CONSTRUCTION REQUIREMENTS
502.05 Pile Driving Equipment . All equipment , including the pile driving hammer , hammer
cushion, helmet, pile cushion, and other appurtenances to be furnished by the Contractor shall be approved in advance by the Engineer before any driving can begin. Pursuant to obtaining this approval, the Contractor shall submit a description of pile driving equipment to the Engineer at least two weeks before pile d riving is to begin. The description shall contain sufficient detail so that the proposed driving system can be evaluated by wave equation analysis. The Contractor shall submit to the Engineer results of a wave equation analysis to show that the piles are drivable. Hammer efficiencies shown in Table 502- 1 shall be used in the wave equation analysis of vertical piles unless better information is available. Hammer efficiencies shall be adjusted for batter driving.