VA 31 63 16-2006 AUGER CAST GROUT PILES.pdf

1、10-06M 31 63 16 - 1 SECTION 31 63 16 AUGER CAST GROUT PILES SPEC WRITER NOTE: Delete between / -/ if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. PART 1 - GENERAL 1.1 DESCRIPTION This section specifies excavation and co

2、ncrete required for construction of auger-placed concrete piles. 1.2 DEFINITION Auger-placed concrete pile (ACP): Pile formed by rotation of a continuous flight hollow-shaft pile augured into the ground to the indicated depth. Grout is injected through auger shaft as auger is being withdrawn in such

3、 a way as to exert removing pressure on withdrawing earth-filled auger as well as lateral pressure on soil surrounding hole. 1.3 RELATED WORK A. Materials testing and inspection during construction: Section 01 45 29, TESTING LABORATORY SERVICES. B. Concrete: Section 03 30 00, CAST-IN-PLACE CONCRETE.

4、 SPEC WRITER NOTE: Make Testing Laboratory services agree with applicable requirements specified in referenced Applicable Publications. Update and specify only that which applies to the project. C. Subsurface investigation: Section 01 00 00, GENERAL REQUIREMENTS, Article, PHYSICAL DATA. 1.4 CONTRACT

5、 BASIS A. Contract price for ACPs will be based upon total length of piles shown on the Contract Documents. Length of piles will be measured as shown. 1. Adjustment of contract price shall be based upon total length of piles placed, and not on length of individual piles placed. When total length of

6、completed piles is greater or less than length shown, contract price adjustment will be made in accordance with Articles, DIFFERING SITE CONDITIONS, CHANGES and CHANGES-SUPPLEMENT of the GENERAL CONDITIONS as applicable. Provided by IHSNot for ResaleNo reproduction or networking permitted without li

7、cense from IHS-,-,-10-06M 31 63 16 - 2 2. Contract price and time will be adjusted in accordance with Articles, DIFFERING SITE CONDITIONS, CHANGES and CHANGES-SUPPLEMENT of the GENERAL CONDITIONS as applicable when artificial materials that are not shown are encountered. 1.5 CONTRACTOR QUALIFICATION

8、S A. Approval by Contracting Officer is required of service of proposed Contractor and will be based upon submission by Contractor of certification that: 1. Contractor has technical qualifications, experience, trained personnel and facilities to install auger placed concrete piles as specified. Appr

9、oval will not be given, however, where an experience record is one of unsatisfactory performance. 2. Contractor has installed ACPs on three installations similar and equivalent to this project for 5 years. Submit list of installations. 1.6 TOLERANCES Install piling with a maximum variation of 75 mm

10、(3 inches) of center of any pile from the location shown. Piles shall not be out of plumb more than 2 percent. (Checked by using a hand level prior to the start of drilling). 1.7 DESIGN MODIFICATIONS A. Where piles are installed exceeding specified tolerances for plumb or location, the foundation de

11、sign will be analyzed by / the Resident Engineer / Government / and if necessary redesigned by / Resident Engineer / Government /. Costs for analysis, redesign, and remediation shall be responsibility of Contractor. B. Additional piles and pile cap modifications necessitated by redesign shall be fur

12、nished and installed, at no additional cost to the Government. 1.8 SUBMITTALS A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. B. Certification to Examination of Site and Records: Before proceeding with the Work, submit copy of certification in acceptable form

13、 signed by the Contractor, stating that careful examination has been made of the site, existing structures, and records of utility lines, test boring records, soil samples, and subsurface exploration reports by the Owners Geotechnical Engineer, Drawings, and Specifications. Provided by IHSNot for Re

14、saleNo reproduction or networking permitted without license from IHS-,-,-10-06M 31 63 16 - 3 C. Shop Drawings and Miscellaneous Submittals: 1. Description of pile drilling equipment. 2. Description of grout pump and pressure gage calibration reports. 3. Pile Installation Recorder (PIR) calibration r

15、eports. 4. Complete description of method for ACP pile installation with a pile layout plan referenced to the structural plans, including a numbering system capable of identifying each individual pile, pile sizes, including pile length and tip elevations, reinforcing steel, and waterproofing details

16、. In addition, furnish a detailed description of construction procedures, including steel shells, if used, and auguring methods. 5. Steel Reinforcement Shop Drawings: Comply with ACI 315. Furnish shop drawings prepared by a Professional Engineer licensed in the state of installation that include pla

17、cing drawings that detail fabrication, bending, and placement. Include bar sizes, lengths, material, grade, bar schedules, stirrup spacing, bent bar diagrams, bar arrangement, splices and laps, mechanical connections, tie spacing, hoop spacing, and supports for concrete reinforcement. a. Prior to fa

18、brication: Indicate steel grades, sizes, bending details, protective coatings, spacing, placement and supports. b. Supplementary Product Literature: Furnish manufacturers literature describing general properties of each product to be used in the Work. c. Certifications: Furnish manufacturers certifi

19、ed reports of mill tests for reinforcing steel and anchorage devices, including physical and chemical analysis. 6. Pile Installation records for all ACPs. D. Reports: 1. Installation of each pile 2. Pile location and plumbness 3. Total quantity of grout placed 4. Load Test E. Product Data: Submit co

20、pies of manufacturers specifications for the following products, including copies of laboratory test reports and other data as may be required to show compliance with these specifications. 1. Fly Ash or Ground Granulated Blast Furnace Slag: ASTM C618, Class C or F and ASTM C989, Grade 100 or 120, re

21、spectively. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-06M 31 63 16 - 4 2. Plasticizing admixture: ASTM C1017/C1017M, Type II. 3. Grout Fluidifier: ASTM C937 4. Aggregate sieve analysis: ASTM C33. 5. Aggregate sodium sulfate soundness tests:

22、ASTM C88. 6. Portland cement: ASTM C150, Type I, Test Piles Type III. 7. Reinforcing Steel: ASTM A615/A615M, Grade 60 / ASTM A722/A722M, Type II, Thread Bar Type F. Certificates: Contractors qualifications as specified: Experienced specialty piling subcontractor having a minimum of 5 years successfu

23、l experience installing Work of same type required for this project, and evidence of satisfactory completion of at least ten ACP installations comparable in scope of the Work and subsurface conditions. Employ only skilled tradesmen who are thoroughly experienced with the materials and equipment to b

24、e used in the Work. G. Contractors Concrete Testing: Submit 3 copies of the laboratory testing reports to the Resident Engineer, the owners Geotechnical Consultant, and other pertinent parties. 1. Submit report and certification of aggregate. 2. Laboratory Test Reports: Submit for evaluation grout m

25、aterials and mix designs. H. Pile Load Testing: 1. A schedule and sequencing plan for pile testing and installation. 2. Pile Installation Recorder (PIR) details. 3. Pile Installation Recorder (PIR) reports. 4. Pile Load Test Work Plan: a. At least two weeks before commencing pile load testing work,

26、the Contractor shall submit a pile load test work plan describing the equipment, apparatus, procedures, and schedule for testing ACPs in accordance with ASTM D1143 / ASTM D3689 / ASTM D3966 and as specified herein, to verify the design pile capacity. The work plan shall also include the proposed ins

27、trumentation of the test pile indicating depth, location, and details of the pile. b. As part of the Pile Load Test Work Plan, submit shop drawings and other information describing the loading and test monitoring arrangement for pile load tests, including the following: 1) Structural design of the t

28、est load support/reaction frame. 2) Details of equipment and apparatus to be used for the monitoring load and pile movements. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-06M 31 63 16 - 5 3) Data on testing and measuring equipment including req

29、uired jack, load cell and/or gauge calibrations. 4) Sample field data recording sheets or examples of automated data acquisition records proposed for recording load test data. I. Independent Testing and Inspection Agency: The Contractor shall retain an Independent Testing and Inspection Agency (Agen

30、cy) to document, monitor, and observe load test, probe pile, test pile, and production pile work. This Agency shall submit field reports and test results required by Section 3.2 for pile load tests, pile installations, and grout testing and inspection. They shall submit a pile installation report fo

31、r each pile no later than three days after the installation is complete. J. Welding Certificates. K. Qualification Data: For Installer, Land Surveyor, and Testing and Inspection Agency. L. Upon completion of ACP installations, the Contractor shall submit five copies of drawings indicating actual in-

32、place pile locations. The Contractor shall pay for all surveying costs. Drawings must be submitted prior to beginning any pile cap or mat installation. One electronic copy of the drawings shall be submitted in AutoCAD DWG format on CD-ROM. M. Record drawings at Project closeout according to Division

33、 01 Section “Closeout Procedures.“ 1.9 QUALITY CONTROL A. Contractors Quality Control Responsibilities: Contractor is solely responsible for quality control of the Work. B. A Quality Control Program shall be submitted by the Contractor at least two weeks prior to the commencement of work. The implem

34、entation of a Contractor Quality Control Program does not relieve the Contractor from the responsibility to provide work in accordance with the Contract Documents, applicable codes, regulations, and Governing Authorities. C. Contractors Independent Testing and Inspection Agency (Agency): The Contrac

35、tor shall retain at his own expense, the services of a qualified Independent Testing and Inspection Agency, licensed in the state of the project, to provide testing and inspection services during the installation of all foundation piling involved in this Work. This firm shall also provide consultati

36、on services to the Contractor if problems Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-06M 31 63 16 - 6 are encountered during the execution of the Work. The Agency shall be primarily concerned with the testing and construction methods which wi

37、ll result in finished foundation piling of the required quality and strength. The Agency shall also be concerned with preventing settlement and/or damage to surrounding structures, roads, utilities, embankments, etc., both within the property lines and on adjoining properties during the construction

38、. D. The Agency shall be experienced in the testing and installation of ACP foundations. It shall have been involved in at least 8 different ACP projects in the last 5 years, and shall have experience in recommending, testing, and specifying ACPs for similar subsurface conditions. E. Survey Work: Th

39、e Contractor shall engage a qualified land surveyor or professional engineer to perform surveys, layouts, and measurements for ACPs. The surveyor shall record actual measurements of each ACPs location, shaft diameter, bottom and top elevations, deviations from specified tolerances, and other specifi

40、ed data. F. Contractors Grout Mix Designer: The Contractor shall employ, at his own expense, a testing laboratory to design grout mixes, conduct tests and submit reports for the design mixes. The Grout Mix Designer shall be qualified according to ASTM C1077 and ASTM E329 to perform material evaluati

41、on tests and to design concrete mixes, as documented according to ASTM E548. G. Welding Standards: Qualify procedures and personnel according to the following: 1. AWS D1.1 2. AWS D1.4 H. Regulatory Requirements: Comply with applicable requirements of the laws, codes, ordinances and regulations of Fe

42、deral, State and Municipal authorities having jurisdiction. Obtain necessary approvals from all such authorities. 1.10 QUALITY ASSURANCE A. The Owner shall retain the services of a Geotechnical Consultant (Consultant) to provide general observation of all pile operations and to provide technical adv

43、ice to the Owner with regard to pile operations and performance. B. The Consultant shall have been involved in at least 8 different ACP projects in the last 5 years, and shall have experience in Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-06M

44、31 63 16 - 7 recommending, testing, and specifying ACPs for similar subsurface conditions. 1.11 APPLICABLE PUBLICATIONS A. Publications listed below form a part of this specification to extent referenced. Publications are referenced in text by basic designation only. B. American Society for Testing

45、and Materials (ASTM): A615/A615M-06a. Standard Specification for Deformed and Plain Carbon-Steel Bar for Concrete Reinforcement A722/A722M-05 Standard Specification for Uncoated High-Strength Steel Bar for Prestressing Concrete C33-03. Standard Specification for Concrete Aggregates C88-05. Standard

46、Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate C109/C109M-05 Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (using 2-in. or 50 mm Cube Specimens) C150-05 Standard Specification for Portland Cement C404-06 Standard Specification for Ag

47、gregates for Masonry Grout C618-05 Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete C937-02 Standard Specification for Grout Fluidifier for Preplaced-Aggregate Concrete C942-99 (2004). Compressive Strength of Grouts for Preplaced-Aggregate Concrete in

48、the Laboratory C989-05 Standard Specification for Ground Granulated Blast-Furnace Slag for Use in Concrete and Mortars C1017/C1017M-03 Standard Specification for Chemical Admixtures for Use in Producing Flowing Concrete C1077-06. Standard Practice for Laboratories Testing Concrete and Concrete Aggre

49、gates for Use in Construction and Criteria for Laboratory Evaluation Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-06M 31 63 16 - 8 D1143-81(1994)e1. Standard Test Method for Piles Under Static Axial Compressive Load D3689-90(1995). Standard Test Method for Individual Piles Under Static Axial Tensile Load