This master should be used by designers working on Port of Portland construction projects and by designers working for PDX tenants (“Tenants”). Usage notes highlight a few specific editing choices, however the entire section should be evaluated and edited to fit specific project needs.

SECTION 355913- TIMBER FENDER PILES

PART 1 - GENERAL

1.1DESCRIPTION

  1. This section describes removing, replacing, handling, driving, cutting off, framing, rebolting, and repair of timber piling for the complete fender pile systems; wood foundation piles; and timber dolphins (breasting or mooring).

1.2REFERENCES

  1. ASTM: American Society for Testing and Materials.
  2. ASTM A153: Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
  3. ASTM A307: Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength
  4. ASTM A603: Standard Specification for Zinc-Coated Steel Structural Wire Rope
  5. ASTM D25: Standard Specification for Round Timber Piles
  6. AWPA: American Wood Preservers Association.
  7. AWPA M4Standard for the Care of Preservative-Treated Wood Products
  8. AWPA P1: Standard for Creosote Preservative
  9. AWPA P13: Standard for Creosote Preservative
  10. AWPA P22: Standard for Ammoniacal Copper Zinc Arsenate (ACZA)
  11. AWPA T1: Use Category System: Processing and Treatment Standard

PART 2 - PRODUCTS

Fill in applicable blanks in the following article.

2.1PILES

  1. Timber Piles: Meet requirements of ASTM D25, Friction Piles. Order length of piles shall be according to Bid Items ____ and installed lengths as shown on the drawings.

Specify tip or butt below, but not both.

  1. Untreated Piles: The minimum butt (or tip) circumference shall be ____ inches.
  2. Treated Piles:
  3. The minimum butt (or tip) circumference shall be ____ inches.

Choose and fill in 2 or 3.

  1. Foundation pile treatment shall be ______.
  2. ______pile treatment shall be ______.

Choose one of the following three paragraphs.

  1. Pile Treatment - Creosote
  2. ______- 50/50 Creosote Petroleum Solution:
  3. Treating process shall conform to AWPA T1, Section 8.
  4. Creosote shall conform to AWPA Standards P1 and P13.
  5. Minimum preservative retention is 17 pounds per cubic foot (PCF).
  6. Treated piling shall bear the AWPB quality assurance mark CFP.
  7. Pile Treatment Waterborne Preservatives:
  8. Treating process shall conform to AWPA T1, Section 8.
  9. Waterborne preservative ACZA shall conform to AWPAStandardP22.
  10. Minimum preservative retention is 1.0 PCF.
  11. Treated piling shall bear the AWPB quality assurance mark CFP.

2.2FASTENINGS

  1. New bolts, nuts, washers, and pins shall be galvanized, meeting requirements of ASTM A307.
  2. Galvanizing shall meet requirements of ASTM A153.
  3. Retap threads of nuts after galvanizing according to ASTM A153.
  4. Use galvanized roofing nails, 2inch No. 11 large flathead for fastening pile head covering.
  5. Wire rope staples shall be galvanized.
  6. Wire rope for pile dolphin fastening shall be 3/4inch diameter, Class C zinc coated throughout, in accordance with ASTM A603.

2.3PILE HEAD COVERING

  1. 30# roofing paper, 2 ply.
  2. 24 gauge aluminum.

PART 3 - EXECUTION

3.1EQUIPMENT

  1. Handle timber piles to avoid damage.
  2. Pile Driving Plant:
  3. Provide equipment of adequate size and capacity to handle, place, and hold to the designed alignment the piles that are to be installed by their operation. This equipment must be able to maintain the alignment of the pile butt, tip, and hammer in the leads without damage to either.
  4. Maintain pile driving equipment in safe operating condition at all times.
  5. Operate pile hammers at the manufacturer’s rated number of blows per minute except when necessary to reduce the speed to avoid damage to the piles, e.g., at the beginning of driving long piles with great unsupported length, or end of driving piles near tip elevation.
  6. Equipment or methods which result in regular or repeated damage to piles will be rejected by the Port.
  7. Use of jets is prohibited.
  8. Provide an adequate pressure gauge at the inboard end of the hose for the purpose of checking the pressure for air or steam hammer.
  9. Driving Criteria: Drive piles to tip elevation shown on the drawings. Driving resistance is not a criterion. Piles split, shattered, or broken in driving will be rejected and shall be replaced with sound piles at no added cost to the Port.

3.2PILE REMOVAL

  1. Remove damaged and broken piling which are to be replaced.
  2. Remove the broken pile and its stub.
  3. Upon removal, broken piling and pile stubs become the property of the Contractor.
  4. Do not pull pile stubs with a clam bucket.
  5. Remove pile stubs when visible or within 3 feet of the lowest river stage during pile driving operations for the respective berth.
  6. Pile stubs shall not be pulled laterally to break off at the mud line. Pull pile stubs inline with their vertical axis.

3.3POSITION AND ALIGNMENT TOLERANCES

  1. Maximum deviation of pile axial alignment from the values given on the drawings is 1/4horizontal in 12 vertical.
  2. Pile head shall be within 6 inches of the location shown in the drawings to permit framing into the fender system without causing axial alignment to deviate in excess of value in Paragraph A above.
  3. Any pile with final position and alignment deviating more than the limits specified will be rejected.

3.4PILE REPLACEMENT

  1. Penetration shall be at a reasonably quick and uniform rate to an average depth of 15feet below mud line or to tip elevation shown on the drawings. Use whichever method produces the greatest penetration.
  2. Frame to provide tight contact and be flush to surface of chocks.
  3. Bolt pile in proper alignment. Bolt holes shall not exceed bolt diameter plus 1/16 inch. Bolts shall be same diameter and spacing as in existing construction.
  4. Counter bore all holes for bolt heads that are in the face of the fender system, as shown on the drawings.
  5. For framing and hardware, see Section 355912, Heavy Timber Pier Construction.

3.5PILE CUTOFFS

  1. Fresh head pile minimum of one foot after driving. Pile heads shall be sound at cutoff. No extension of timber piles are allowed.
  2. Cut off piles to match existing and at the same elevation as adjacent piles or to the elevation shown. Cutoffs become property of the Contractor. Dispose of in accordance with Section015000, Temporary Facilities and Controls.
  3. Treat pile heads within same working day of cutoff.
  4. Treat bored holes in pile and pile head after cutoff with copper napthenate according to AWPA Standard M4, except as noted below.
  5. Cover treated pile head with pile head covering. Fold edges down side of pile 3inches and fasten with a minimum of eightgalvanized roofing nails.

END OF SECTION355913

11/7/2018 / TIMBER FENDER PILES
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