1、*USACE / NAVFAC / AFCESA / NASA UFGS-31 62 21 (November 2008)-Preparing Activity: USACE SupersedingUFGS-31 62 21 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated October 2008*SECTION TABLE OF CONTENTSDIVISION 31 - EARTHWORKSECTION 31 62 21PILING: COMPOSI
2、TE, WOOD AND CAST IN-PLACE CONCRETE11/08PART 1 GENERAL1.1 UNIT PRICES1.1.1 Piling1.1.2 Load Test1.1.3 Pile Withdrawals1.1.4 Basis of Payment1.1.4.1 Piling Quantities1.1.4.2 Variations in Pile Quantities1.1.4.3 Variations in the Number of Pile Load Tests1.1.4.4 Variations in Test Pile Withdrawals1.2
3、REFERENCES1.3 SYSTEM DESCRIPTION1.3.1 Subsurface Data1.3.2 Equipment1.3.2.1 Pile Hammer1.3.2.2 Driving Helmets or Caps1.4 SUBMITTALS1.5 DELIVERY, STORAGE, AND HANDLINGPART 2 PRODUCTS2.1 PILES2.1.1 Wood Sections2.1.2 Metal Shells2.1.3 Concrete2.1.4 Reinforcing SteelPART 3 EXECUTION3.1 PILE DRIVING3.1
4、.1 Concrete Placement3.1.2 Splices3.1.3 Tolerances in Driving3.1.4 Cutting of Piles3.1.5 Rejected PilesSECTION 31 62 21 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.1.6 Predrilling3.1.7 Collars or Bands3.1.8 Metal Shoes3.1.9 Joints3.1.10 W
5、elding3.1.11 Pile Heave3.1.12 Curing3.1.13 Long Piles3.1.14 Jetting of Piles3.2 FIELD TEST AND INSPECTIONS3.2.1 Test Piles3.2.2 Load Tests3.2.3 Safe Design Capacity3.2.4 Inspection3.2.5 Pile Capacity- End of Section Table of Contents -SECTION 31 62 21 Page 2Provided by IHSNot for ResaleNo reproducti
6、on or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-31 62 21 (November 2008)-Preparing Activity: USACE SupersedingUFGS-31 62 21 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated October 2008*SECTION 31 62 21PILING:
7、 COMPOSITE, WOOD AND CAST IN-PLACE CONCRETE11/08*NOTE: This guide specification covers the requirements for composite, wood and cast-in-place concrete piles.Edit this guide specification for project specific requirements by adding, deleting, or revising text. For bracketed items, choose applicable i
8、tems(s) or insert appropriate information.Remove information and requirements not required in respective project, whether or not brackets are present.Comments and suggestions on this guide specification are welcome and should be directed to the technical proponent of the specification. A listing of
9、technical proponents, including their organization designation and telephone number, is on the Internet.Recommended changes to a UFGS should be submitted as a Criteria Change Request (CCR).*PART 1 GENERAL1.1 UNIT PRICES1.1.1 PilingPiling will be paid at the contract unit price per linear m foot (inc
10、luding test piles), for “Piling“ multiplied by the total linear m feet of acceptable piles actually installed. The Contracting Officer reserves the right to increase or decrease the total length of piles to be furnished and installed by changing the foundation pile locations or elevations, requiring
11、 the installation of additional piles, or requiring omission of piles. Payment will constitute full compensation for furnishing, delivering, handling, and installing the foundation piles. The Contractor will not be allowed payment for withdrawn, broken, or rejected piles or (except for test piles) f
12、or any portion of any pile remaining above the cut-off point.SECTION 31 62 21 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1.1.2 Load TestThe contract includes _ metric ton -ton pile load tests. The Contracting Officer reserves the right to
13、increase or decrease the number of load tests. Adjustments in the contract price will be made for such increases or decreases by the contract price for “Additional Pile Load Test“ or “Omitted Pile Load Test.“1.1.3 Pile WithdrawalsPile Withdrawals will be paid at the contract unit price each for “Pil
14、e Withdrawals“ multiplied by the number of piles withdrawn as directed. The Contracting Officer reserves the right to increase or decrease the number of pile withdrawals. Adjustments in the contract price will be made in accordance with the CONTRACT CLAUSES.1.1.4 Basis of Payment*NOTE: This paragrap
15、h anticipates bids on a lump sum price, with directed changes in accordance with the CONTRACT CLAUSES or with the unit prices defined above. Where the contract is based on unit price, this paragraph should be deleted and replaced by the following paragraph:*The contract price for piling will include
16、 the cost of all necessary equipment, tools, material, labor, and supervision required to: deliver, handle, install, cut off, and withdraw the piles (including test piles), and conduct the load tests. Payment for piles will be based on the lengths of acceptable piles measured from cut-off elevations
17、 to final tip elevations. No additional payment will be made for: damaged, rejected, or misplaced piles, withdrawn piles, other than test piles withdrawn as directed, any portion of a pile remaining above the cut-off elevation, backdriving, cutting off piles, splicing, build-ups, or any cut-off leng
18、ths of piles.1.1.4.1 Piling QuantitiesThe contract price for piling, including _ test piles, will be based on the following quantities and will include _ -metric ton -ton load tests and _ test pile withdrawals.TotalSize LengthNumber of Piles (mm) m _ _ _ _ _TotalSize LengthNumber of Piles (inches) (
19、feet)_ _ _ _ _SECTION 31 62 21 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1.1.4.2 Variations in Pile QuantitiesBased on the results of driving and loading the test piles, the Contracting Officer will determine and will list for the Contrac
20、tor calculated pile tip elevations and the minimum driving resistances for all piles. The Contracting Officer reserves the right to increase or decrease the total length of piles to be furnished and installed by changing the pile locations or elevations, requiring the installation of additional pile
21、s, or directing the omission of piles from the requirements shown and specified. Should the total length of piles installed vary from that specified because of added or omitted piles or variations in the pile lengths, the contract price for piling will be adjusted by the applicable contract unit pri
22、ce per linear meter foot (by size) for “Additional Pile Length“ or “Omitted Pile Length“ and multiplied by the actual length added or omitted.1.1.4.3 Variations in the Number of Pile Load TestsThe Contracting Officer reserves the right to increase or decrease the number of pile load tests from that
23、specified. For each load test added or deleted, the contract price will be adjusted by the applicable contract unit price for “Each Additional Pile Load Test“ or “Each Omitted Pile Load Test.“1.1.4.4 Variations in Test Pile WithdrawalsShould the number of test pile withdrawals be increased above the
24、 specified number at the direction of the Contracting Officer, the contract price for piling will be adjusted by the contract price for “Each Additional Test Pile Withdrawn“ and multiplied by the number of additional test piles withdrawn.1.2 REFERENCES*NOTE: This paragraph is used to list the public
25、ations cited in the text of the guide specification. The publications are referred to in the text by basic designation only and listed in this paragraph by organization, designation, date, and title.Use the Reference Wizards Check Reference feature when you add a RID outside of the Sections Referenc
26、e Article to automatically place the reference in the Reference Article. Also use the Reference Wizards Check Reference feature to update the issue dates.References not used in the text will automatically be deleted from this section of the project specification when you choose to reconcile referenc
27、es in the publish print process.*The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.SECTION 31 62 21 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted withou
28、t license from IHS-,-,-AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS (AASHTO)AASHTO M 133 (2008) Standard Specification for Preservatives and Pressure Treatment Processes for TimberAMERICAN WELDING SOCIETY (AWS)AWS D1.1/D1.1M (2008) Structural Welding Code - SteelAWS D1.4/D1.4M
29、(2005; Errata 2005) Structural Welding Code - Reinforcing SteelASTM INTERNATIONAL (ASTM)ASTM A 615/A 615M (2008a) Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete ReinforcementASTM A 996/A 996M (2006a) Standard Specification for Rail-Steel and Axle-Steel Deformed Bars or
30、Concrete ReinforcementASTM D 1143/D 1143M (2007) Piles Under Static Axial Compressive LoadASTM D 25 (1999; R 2005) Round Timber Piles1.3 SYSTEM DESCRIPTIONThe work shall be performed by a Contractor specializing in the required foundation system and having experience installing the specified foundat
31、ion system under similar subsurface conditions.1.3.1 Subsurface DataSubsurface soil data logs are shown on the drawings appended to the SPECIAL CONTRACT REQUIREMENTS. The subsoil investigation report and samples of material taken from subsurface investigations may be examined at _.1.3.2 Equipment1.3
32、.2.1 Pile HammerProvide a hammer with a delivered energy suitable for the total weight of the pile, the character of subsurface material to be encountered, and the pile capacity to be developed. The driving energy of the hammer shall be not less than 20.3 kN-m 15,000 foot-pounds. Operate diesel-powe
33、red hammers at the rate recommended by the manufacturer throughout the entire driving period. Maintain sufficient pressure at the steam hammer so that: a. For a double-action hammer, the number of blows per minute during and at the completion of driving of a pile is equal approximately to that at wh
34、ich the hammer is rated;b. For a single-acting hammer, there is full upward stroke of the ram; andSECTION 31 62 21 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-c. For a differential type hammer, there is a slight rise of the hammer base duri
35、ng each upward stroke.1.3.2.2 Driving Helmets or Capsa. Use a driving helmet or cap, including a pile cushion, between the top of the pile and the ram to prevent impact damage to the pile. The driving helmet, or cap and pile cushion combination, shall completely cover the top surface of the pile and
36、 be capable of protecting the head of the pile, minimizing energy absorption and dissipation, and transmitting hammer energy uniformly over the top of the pile.b. The driving helmet or cap shall fit loosely around the top of the pile so that the pile is not restrained by the driving cap, if the pile
37、 tends to rotate during driving. The pile cushion may be of solid wood, of laminated construction using plywood, softwood, or hardwood boards, or of other approved cushioning material. The pile cushion shall be retained by the driving helmet.c. The minimum thickness of the pile cushion shall be 75 m
38、m 3 inches and the thickness shall be increased so as to be suitable for the size and length of pile, character of subsurface material encountered, hammer characteristics, and required driving resistance. Use a new pile cushion at the start of driving for each pile and replaced whenever it becomes h
39、ighly compressed, charred, burned, or deteriorated in any manner during driving.1.4 SUBMITTALS*NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL PROCEDURES and edit the following list to reflect only the submittals required for the project. Submittals should be kept t
40、o the minimum required for adequate quality control.A “G” following a submittal item indicates that the submittal requires Government approval. Some submittals are already marked with a “G”. Only delete an existing “G” if the submittal item is not complex and can be reviewed through the Contractors
41、Quality Control system. Only add a “G” if the submittal is sufficiently important or complex in context of the project.For submittals requiring Government approval on Army projects, a code of up to three characters within the submittal tags may be used following the “G“ designation to indicate the a
42、pproving authority. Codes for Army projects using the Resident Management System (RMS) are: “AE“ for Architect-Engineer; “DO“ for District Office (Engineering Division or other organization in the District Office); “AO“ for Area Office; “RO“ for Resident Office; and “PO“ for Project Office. Codes fo
43、llowing the “G“ typically are not used for Navy, Air Force, and NASA projects.SECTION 31 62 21 Page 7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Choose the first bracketed item for Navy, Air Force and NASA projects, or choose the second bracketed
44、 item for Army projects.*Government approval is required for submittals with a “G“ designation; submittals not having a “G“ designation are for Contractor Quality Control approval.information only. When used, a designation following the “G“ designation identifies the office that will review the subm
45、ittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:SD-02 Shop DrawingsEquipmentDetail drawings, to demonstrate compliance of driving equipment, including metal shoes and cap blocks, splicing of timber and concrete sections, and the forming, reinforcing and casting of pile
