CLUSTER PILINGS_SOW_DTMA-92-Q-2011-0087.pdf

General:

The anchorage at the James River Reserve Fleet (JRRF) is located approximately 20 miles above the mouth of the river. The shore side facility is located on U.S. Army Fort Eustis, Virginia and requires access to the fort in order to reach the fleet site. There are 21 ships in the fleet anchorage, along with several small harbor craft used to service the fleet at the fleet location. The fleet's hours or operation are 0700-1730, Monday through Thursday, however the contractor may work outside of these hours with prior approval. The Contractor's rates will be based upon cost per complete mooring dolphin, with the option to order up to four dolphins within the JRRF boat basin.

PERMITS:

The contractor will be responsible for obtaining any permits that may be necessary to in accordance with Federal, state, or local law or regulation.

STATEMENT OF WORK:

The Contractor will drive mooring dolphins within the JRRF small boat basin in accordance with drawing (1) in the general location of the previous dolphins and at the direction of the COTR.

Specific requirements are as follows:

1 MSDS and CIS

Provide Materials and Safety Data Sheets (MSDS) and Consumer Information Sheets (CIS) associated with timber pile preservative treatment. Contractor shall comply with all safety precautions indicated on MSDS and CIS.

2 QUALITY ASSURANCE

2.1 Timber Piles Preservative Treatment

The Contractor shall be responsible for the quality of treated wood products. The Contractor shall provide the Owner's Representative with the inspection report of an independent inspection agency, approved by the Owner that offered products comply with applicable AWPA standards. Identify treatment on each piece by the quality mark of an agency accredited by the Board of Review of the American Lumber Standard Committee. Inspect all preservative-treated wood visually to ensure there are no excessive residual materials or preservative deposits. Materials shall be clean and dry or it will be rejected because of environmental concerns.

3 PRODUCTS

3.1 Pile

Provide Douglas fir or Southern pine clean-peeled piles conforming to ASTM D 25. Piles shall be in one piece. Splices will not be permitted. Each treated pile shall be branded by the producer, in accordance with AWPA M6. Pile circumferences shall be a minimum butt circumference measured at 3 feet from the butt end shall be 12 inches. Piles shall be 45' in length. See drawing for further details.

3.2 Preservative Treatment

Treat piles by the full-cell pressure process in accordance with AWPA C1 and AWPA C3 for marine piling, as follows:

Fender Piles: Waterborne preservative for marine piles (ACA, ACZA, CCA).

3.3 Wire Rope and Fitting

FS RR-W-410, Type Ill, Class 2, zinc coated. Provide 0.375 inch diameter zinc-coated steel staples not less than 5 inches in length.

3.4 Rubbing Panels

Rubbing panels will be of Ultra High Molecular Weight (UHMW), ultraviolet (UV) resistant material with a maximum dry coefficient of 0.14 (polyhisolidor, or equal). UHMW rubbing panels may be one piece or up to three pieces and cover at least 170 degrees of the piling subject to wear. The rubbing panels will extend one foot below the waterline at mean low water. Refer to drawing (1) for further details.

3.4 SOURCE QUALITY CONTROL

3.4.1 Plant Inspection

The Owner reserves the right to perform plant inspection of the treating process. Provide the Owner with a minimum 3-week advance notice, indicating location of the initial preservative treatment.

Allow the Owner unlimited access to the plant and inspection privileges for each facet of the treating process.

4 EXECUTION

4.1 INSTALLATION

4.1.1 Driving Fender Piles

Pile hammers shall be air, steam, or diesel powered, and of an approved type with a capacity at least equal to the hammer manufacturer's recommendation for the total weight of pile and character of subsurface material to be encountered. Minimum driving energy shall be 8,000 foot-pounds with maximum driving energy of 15,000 foot-pounds. Weight of the hammer for drop hammers shall not be less than 2,000 pounds.

4.1.1.2 Fastening

Use washers of the size and type specified under bolt heads and nuts which would otherwise come in contact with wood.

4.1.1.3 Wrapping Pile Clusters and Dolphins

Fasten ends of wire rope with two zinc-coated clips or clamps. Draw piles together, and bear on adjacent piles and structure as shown. Provide and draw uptight through bolts before wrapping is finally secured. Attach wire rope to piles as indicated.

4.1.1.3 Tolerances in Driving

Piles shall be driven in the locations indicated. Fender piles may be manipulated a maximum of 0.50 inch per foot of pile length in a direction parallel to the pier face and 0.25 inch per foot of pile length in a direction perpendicular to the pier face. Remove and replace with new piles those damaged, mislocated, driven below the design cutoff, or driven out of alignment.

4.2 JETTING OF PILES

Water jets shall not be permitted.

4.3 SPUDDING OF PILES

Spudding shall not be permitted.

4.4 PREDRILLING

Predrilling shall not be permitted.

4.5 PROTECTION OF PILES

Square the heads and tips of piles to the driving axis. Laterally support piles during driving, but do not unduly restrain piles from rotation in the leads. Swinging leads will not be permitted. Where pile orientation is essential, take precautionary measures to maintain the orientation during driving.

Handle, protect, and field treat piles in accordance with AWPA M4. Immediately after pile or post tops are cut off and prior to placement of pile cap, protect pile or post top with several heavy applications of the same preservative used to treat the pile or post, or else copper naphthenate solutions containing a minimum of 2 percent copper metal may be used with treated products.

Aluminum caps shall be fastened on top of all fender piles.

4.6 FIELD QUALITY CONTROL

4.6.1 Inspections

When Owner inspections result in product rejection, the Contractor shall promptly segregate and remove rejected material from the premises. The Owner may also charge the Contractor an additional cost of inspection or test when prior rejection makes reinspection or retest necessary.