STEEL SHEET PILING
Steel Sheet Piling shall be rolled from carbon structural steel and shall meet the requirements of Article 4167 of the Standard Specifications and the requirements of ASTM A 328 and / or rolled from high strength low alloy columbium-vanadium structural steel meeting the requirements of ASTM A 572 Grade 50 and shall also conform to the requirements of ASTM A 6 and the requirements of Article 2501 and 4167 of the Standard specifications.
Steel Sheet Piling shall be of the interlocking type with section modules not less than that specified on the design drawings. Unless otherwise specified, sheet piling web thickness cannot be less than 3/8” thick and the section modulus as specified in the contract document. Steel sheet piling shall be free of injurious defects, discontinuity or irregularity, shall be uniform in thickness. Steel sheet piling shall be of domestic origin, melted and manufactured in the USA.
Note: Coils are excluded from qualification to the requirements of ASTM A 328 until processed into finished sheet piling (meaning decoiling, leveling, hot forming or cold forming, conditioning, heat treatment, cutting to length, testing, marking, and certifications)
Unless otherwise specified appurtenant materials shall conform to the following standards:
A. |
Plates or structural shape |
ASTM A 36 |
B. |
Rivets |
ASTM A 502 Grade 1 or 2 |
C. |
Bolts |
ASTM A 307 Grade A or |
|
|
ASTM F 568, Class 4-6 |
D. |
High strength bolts |
ASTM A 325 |
E. |
Nuts |
ASTM A 563 DH, Heavy Hex, Class 2 B |
Splicing / Welding Steel Sheet Piling
When steel sheet piling is to be welded, a Weld Procedure Specification (WPS) shall be required and shall be pre-approved prior to welding. Welding shall be performed by a certified welder.
For Welding and pre-heat requirements, please refer to IM 558
Note: Consult Appendix X-3 of ASTM A 6 for specific information on weldability. Among other considerations:
a. Actual production joint restraint / Base metal thickness
b. Filler metal and base metal strength compatibility
c. Preheat and interpass temperatures
d. Heat input
Steel sheet piling shall not be accepted in the field from unapproved sources and without a mill test report, proper identification showing heat number, number of pieces, project number, county, design number, and contractor’s name.
Steel sheet piling meeting the requirements of ASTM A 328 shall have a minimum tensile strength of 65 ksi and a minimum yield point of 39 ksi. Elongation in 8 inches shall be 17% (min) and elongation in 2 inches shall be 20% (min).
Steel sheet piling meeting the requirements of ASTM A 572 Grade 50 shall have a minimum tensile strength of 65 ksi and a minimum yield of 50 ksi. Elongation in 8 inch shall be minimum of 18% and elongation in 2 inches shall have an elongation of 21% (minimum).
Chemical requirements of all sheet piling shall meet the requirements specified in ASTM A 328 and / or the chemical requirements specified in ASTM A 572.