02 32 13.12.pdf

Charleroi Locks and Dam - Upper and Lower Guard Walls

SECTION TABLE OF CONTENTS

DIVISION 02 - EXISTING CONDITIONS

SECTION 02 32 13.12

EXPLORATORY PILE DRIVING

PART 1 GENERAL

1.1 SUMMARY

1.2 GENERAL REQUIREMENTS AND SEQUENCE OF WORK

1.2.1 Purpose

1.2.2 Methodology

1.2.3 Location of Exploratory Piles

1.2.4 Sequence of Work, Exploratory Pile Driving

1.2.5 Government Access for Inspection

1.3 SUBMITTALS

1.4 GOVERNMENT EXPLORATORY PILE DRIVING

1.5 CONTRACTOR QUALITY CONTROL, EXPLORATORY PILE DRIVING

PART 2 PRODUCTS

2.1 EXPLORATORY TEST PILES

PART 3 EXECUTION

3.1 EQUIPMENT

3.1.1 Pile Driving Equipment

3.2 EXPLORATORY PILE DRIVING

3.3 CONTRACTOR QUALITY CONTROL

3.3.1 Quality Control Personnel

3.3.2 Supplemental CQC Staff

3.3.3 Test Reports

-- End of Section Table of Contents --

SECTION 02 32 13.12 Page 1 W911WN-09-B-0004 Revised by Amendment No. 0002

SECTION 02 32 13.12

EXPLORATORY PILE DRIVING

PART 1 GENERAL

1.1 SUMMARY

This section describes the requirements for exploratory pile driving.

1.2 GENERAL REQUIREMENTS AND SEQUENCE OF WORK

1.2.1 Purpose

The purpose of exploratory pile driving is to facilitate accurate ordering of king piles and sheet piles to correct lengths for the various features of this project. Exploratory driving will also aid the assessment of the acceptability of Contractor-proposed equipment and procedures, and to determine the tip elevations coinciding with the seating of piling into rock.

1.2.2 Methodology

Exploratory pile driving shall be accomplished by driving a pair of adjacent sheet piles using a vibratory hammer (down to the point of vibratory refusal). The elevation at which vibratory refusal and impact driving refusal are encountered shall be recorded for each pile. The elevation at which vibratory refusal is encountered will be defined as the top of rock. Exploratory pile driving shall be done using the appropriate impact hammer types for the different pile types (i.e. the same ones to be used in production pile driving). The Exploratory Pile Driving procedure shall utilize a fabricated template to act as a guide for the piles and to provide stability during driving. The king pile shall be driven, and the two pairs of sheets shall be threaded to the king pile and driven in accordance with the procedures outlined under the planned normal driving procedures for production piling. A more complete description of the exploratory pile driving requirements and sequence is provided under Part

3, EXECUTION.

1.2.3 Location of Exploratory Piles

Exploratory piles shall be driven at the locations, as shown on contract drawings Nos. 037-LCH-18/4, 5 and 6. Piles shall be located within 10 feet (any direction) of the locations identified on the drawing. The actual locations of all exploratory pile locations shall be recorded by the Contractor, along with the elevations of the pile tip and the inferred top of rock, the driving time, obstructions encountered and other pertinent notes regarding driving conditions and other information contained on the sample "Pile Driving Record" attached to the end of Section 31 41 16 METAL

SHEET PILING.

1.2.4 Sequence of Work, Exploratory Pile Driving

Exploratory piles, as shown on the drawings, shall be driven from floating plant. Exploratory pile driving shall be conducted in conjunction with

SECTION 02 32 13.12 Page 2 exploratory drilling (see Section 02 32 13.11 EXPLORATORY PILE DRIVING) as the first order of work. Piles shall be driven using equipment and procedures as planned for production piling, and in an order approved by the Contracting Officer. All records of the exploratory pile driving shall be delivered to the Contracting Officer no later than 5 calendar days following the completion of the exploratory driving. The Contractor shall not make final orders for pile material until the exploratory piles have been completed and a profile of the top of rock has been established. The Contractor assumes all risk for materials which are ordered prior to the establishment of the FINAL top of rock elevations, and shall reorder/replace any materials so ordered which are inadequate based on the FINAL elevations. All costs for such reordering/replacement of materials incorrectly ordered shall be at the Contractor's expense, at no cost to the Government. Quantities for materials for the piles and necessary equipment, for bidding purposes, shall be based on the dimensions and elevations indicated on the contract drawings.

1.2.5 Government Access for Inspection

The Contractor will provide access for the Government for inspection of the exploratory pile driving operations at all times. The Government will access Contractor floating plant by boat. The Contractor shall maintain a mooring location on the floating plant for mooring of the Government's inspection boat, and shall permit free access to Government inspectors to the floating plant. No separate payment will be made for providing such access to these operations.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Pile Driving Equipment; G, RE

Complete descriptions of piling driving equipment including hammers, both impact and vibratory; extractors; protection caps, and other installation appurtenances to include a drawing of the template that will be used shall be submitted for approval prior to commencement of work.

Exploratory Pile Driving Plan; G, RE

Prior to starting work, the Contractor shall submit a plan for exploratory pile driving. The plan shall include, but not be limited to, the proposed method of driving exploratory piles including a description of the equipment and tools that will be used, a listing of any subcontractors to include a description of how the subcontractors will be used, and a description of all methods and procedures that will be utilized to ensure a safe operation and to protect the environment. The plan shall also include a schedule of exploratory piles and the estimated tip elevation at each location, as inferred by the Contractor from available subsurface information for the site. This submittal shall also include a statement of the prior experience, in the

SECTION 02 32 13.12 Page 3 type of work described in these specifications, of the person or persons designated to perform the work specified herein. No work shall be performed until this plan has been approved and no deviation from the approved plan will be permitted without prior approval by the Contracting Officer.

SD-06 Test Reports

Pile Driving Logs; G, RE

The Contractor shall submit complete, three legible copies of PILE DRIVING LOG, an example of which is shown at the end of this section, to the Contracting Officer no later than 5 days following completion of each exploratory pile. The Pile Driving Logs shall include the elevation at which vibratory refusal has been reached and the final tip elevation at which driving refusal has been reached.

SD-11 Closeout Submittals

Pile Driving Records

Records of the pile driving operations shall be submitted within 5 calendar days following completion of each exploratory pile.

These records shall provide a system of identification which shows the disposition of approved piling in the work, driving equipment performance data, piling penetration rate data, and piling dimensions. The Contractor shall utilize the sample "Pile Driving Record" attached to the end of Section 31 41 16 METAL SHEET PILING.

1.4 GOVERNMENT EXPLORATORY PILE DRIVING

The Government can provide pile driving As-Built data for the upstream and downstream sheet pile cut-off walls and cofferboxes that were installed under Contract One (River Wall construction), as requested

1.5 CONTRACTOR QUALITY CONTROL, EXPLORATORY PILE DRIVING

Contractor Quality Control for exploratory driving shall be in accordance with Section 01 45 01 USACE QUALITY CONTROL. The Contractor shall provide a qualified pile driving foreman and work crew, and a supplemental CQC staff member for exploratory pile driving. The supplemental staff member or other assigned personnel shall be responsible for the preparation of a separate log for exploratory pile driving. The staff for exploratory pile driving shall also include a Professional Land Surveyor to sight exploratory pile locations and record final hole locations. The presence of any Government representative or the keeping of separate pile driving records by the Contracting Officer shall not relieve the Contractor of the responsibility for recording logs for the exploratory piles.

PART 2 PRODUCTS

2.1 EXPLORATORY TEST PILES

The Contractor shall furnish sheet piles for the exploratory pile driving program. The types of piles for each location shall consist of two PZ-35, two PS27.5 or two PS31 sheets as detailed on teh drawings. Sheet piles do not have to be new, however, the size and properties of sheet piles shall be consistent with those to be used in the proposed construction and shall

SECTION 02 32 13.12 Page 4 conform to Section 31 41 16 METAL SHEET PILING.:

PART 3 EXECUTION

3.1 EQUIPMENT

3.1.1 Pile Driving Equipment

The Contractor shall select pile driving equipment to readily advance piling through the alluvium and seat the piling into rock on a large production basis. The Contractor shall also provide all other special tools for pile driving (e.g., follower) and for removal of obstructions, that are consistent with equipment planned for the production work.

Equipment, such as hammers, leads, extractors, followers, etc, shall meet the applicable requirements specified for production equipment as specified in Section 31 62 16.16 10 STEEL KING PILES, and 31 41 16 METAL SHEET PILING.

3.2 EXPLORATORY PILE DRIVING

The Contractor shall drive exploratory piles as shown on the contract drawings. Exploratory pile driving shall be performed with the sheet piles furnished by the Contractor. The procedure for each exploratory pile shall generally be conducted as follows:

a. Position the floating plant over the test location. Locate the test pile within 10 feet of the plan location. Set spuds once the test location is sighted in by the surveyor. The Contractor's survey staff shall record the exact coordinates of the location.

b. Pick and place one pair of sheet piles and vibrate far enough to set the sheets. Pick and place the second pair of sheet piles into interlock and vibrate far enough to set the sheets. Vibrate the two pairs to the top of rock. Drive the two pair of sheet pile to refusal using the impact hammer. The elevations for the vibratory refusal and driving refusal, as described in Section 31 41 16 METAL SHEET PILING, shall be recorded.

d. Pull the sheet piles and stow.

e. Pull spuds and move on to the next location. Repeat Steps a.

through e. until all exploratory pile driving tests are completed.

3.3 CONTRACTOR QUALITY CONTROL

3.3.1 Quality Control Personnel

The Contractor's CQC System Manager and supplemental staff member(s) for exploratory pile driving shall be experienced in all aspects of the proposed methods. Each QC staff member shall have had training and experience in inspection and record keeping as presented herein.

Submission of CQC staff qualification and additional requirements for Contractor QC are described in Section 01 45 01 USACE QUALITY CONTROL.

3.3.2 Supplemental CQC Staff

a. Geotechnical Engineer or Geologist

The Contractor shall utilize the services of a qualified Professionally Registered Geotechnical Engineer or Geologist who

SECTION 02 32 13.12 Page 5 will provide inspection, and record keeping of all exploratory pile driving operations. This CQC staff member(s) shall have a minimum of five years experience pile driving and shall be approved by the Contracting Officer. This CQC staff member may recommend additional driving tests to the Contracting Officer if needed. The Contractor's Geotechnical Engineer or Geologist shall accurately record the results of all exploratory pile driving operations. The Geotechnical Engineer or Geologist shall make observations of all ongoing pile driving operations. The Contractor's Geotechnical Engineer or Geologist will submit records of the exploratory pile driving program to the Government.

3.3.3 Test Reports

The Contractor shall keep accurate logs for all exploratory pile driving tests. A sample log is included at the end of Sectionss 31 62 16.16 10 STEEL KING PILES, and 31 41 16 METAL SHEET PILING. All such records shall be recorded during the actual performance of the work and shall be preserved in good condition and order by the Contractor until they are delivered and accepted. The Contractor shall deliver completed forms to the Contracting Officer within 5 calendar days of completing each exploratory pile driving test. These requirements do not relieve the Contractor of the obligation to report certain failures immediately as required in this Section. Such reports of failures and the action taken shall be confirmed in writing in the routine reports. The Contracting Officer shall have the right to examine and review all such records at any time prior to their delivery to him and shall have the right to request changes to the record keeping procedure.

-- End of Section --

SECTION 02 32 13.12 Page 6