1、*USACE / NAVFAC / AFCESA / NASA UFGS-31 63 26 (August 2008)-Preparing Activity: USACE SupersedingUFGS-31 63 26.00 10 (April 2006)UFGS-31 63 26.16 20 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2008*SECTION TABLE OF CONTENTSDIVISION 31 - EARTHWO
2、RKSECTION 31 63 26DRILLED CAISSONS08/08PART 1 GENERAL1.1 UNIT PRICES1.1.1 Basis of Bids1.1.2 Tests1.1.2.1 Load Test1.1.2.2 Penetration Test1.1.2.3 Proof Test Hole1.1.3 Separate Unit Prices1.1.3.1 Additional Caisson Lengths1.1.3.2 Omitted Caisson Lengths1.1.3.3 Casings Permanently Left in Place1.1.3.
3、4 Reinforcing Steel for Additional Caisson1.1.3.5 Reinforcing Steel for Caissons Omitted1.1.3.6 Removal of Rock1.1.3.7 Removal of Obstructions Other Than Rock1.1.4 Basis Of Payment1.1.4.1 Unit Price1.1.4.2 Full Compensation1.1.4.3 Load Tests1.1.4.4 Penetration Tests1.1.4.5 Proof Test Holes1.2 REFERE
4、NCES1.3 SUBMITTALS1.4 QUALITY ASSURANCE1.4.1 Survey of Caisson Locations1.4.2 Specialty Subcontractor Qualifications1.4.3 Welding1.4.4 Pre-installation Conference1.4.5 Contractor Supervision1.4.6 Government Inspection1.4.7 Safety Precautions for Workmen and Inspectors1.4.7.1 Life Line1.4.7.2 Ventila
5、tion1.5 DELIVERY, STORAGE, and HANDLINGSECTION 31 63 26 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1.6 PROJECT/SITE CONDITIONS1.6.1 Subsurface Data1.6.2 Caisson Drilling Equipment1.7 SEQUENCING1.7.1 Caisson Excavation1.7.2 AcceptancePART 2
6、 PRODUCTS2.1 MATERIALS2.1.1 Concrete Work2.1.1.1 Strength2.1.1.2 Coarse Aggregate2.1.1.3 Reinforcing Steel2.1.2 Welding2.1.3 Casing Steel2.2 CAISSON DRILLING EQUIPMENTPART 3 EXECUTION3.1 PREPARATION3.2 INSTALLATION3.3 TOLERANCES3.4 PENETRATION TESTS3.5 PROOF TEST HOLE REQUIREMENTS3.6 LOAD TESTS3.6.1
7、 General Requirements3.6.2 Replacements3.7 PROTECTION3.8 SPECIAL INSPECTION AND TESTING FOR SEISMIC-RESISTING SYSTEMS3.9 RECORDS- End of Section Table of Contents -SECTION 31 63 26 Page 2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC
8、 / AFCESA / NASA UFGS-31 63 26 (August 2008)-Preparing Activity: USACE SupersedingUFGS-31 63 26.00 10 (April 2006)UFGS-31 63 26.16 20 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2008*SECTION 31 63 26DRILLED CAISSONS08/08*NOTE: This guide specif
9、ication covers the requirements for the procurement, installation, and testing of drilled foundation caissons including reinforcing and cast-in-place concrete.Edit this guide specification for project specific requirements by adding, deleting, or revising text. For bracketed items, choose applicable
10、 items(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 o
11、f 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).This guide specification includes tailoring options for NAVFAC, NASA and USACE. Selection or deselection of a
12、 tailoring option will include or exclude that option in the section, but editing the resulting section to fit the project is still required.*PART 1 GENERAL*NOTE: Use the following specifications in conjunction with this section:SECTION 00 22 13 SUPPLEMENTARY INSTRUCTIONS TO BIDDERSSECTION 31 63 26
13、Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SECTION 01 35 29 SAFETY AND OCCUPATIONAL HEALTH REQUIREMENTSOn the drawings, show:1. Subsurface-soil-data logs.2. Top and bottom elevation of each caisson.3. Size (diameter in mm (inches), bearing
14、 capacity, and total number of each size of caissons.4. Dimensions of the bell, if required.5. Dimensions of the casing.6. Reinforcing steel details, if required.7. Location of caissons to be penetration tested, if required.8. Location of caisson to be proof tested, if required.9. Locations, size, b
15、ell dimensions, and installation sequence of load testing caisson, if required.*1.1 UNIT PRICES*NOTE: Delete this subpart for NASA projects.*a. Requirements for price breakdown of Drilled Caisson work are specified in Section 01 20 00.00 20 PRICE AND PAYMENT PROCEDURES. Requirements for construction
16、 scheduling related to Drilled Caisson work are specified in Section 01 32 17.00 20 NETWORK ANALYSIS SCHEDULES.*NOTE: If requirements for price breakdown of drilled caissons work are specified in Section 01 22 00.00 10 MEASUREMENT AND PAYMENT, use the following paragraph and delete subparts 1.2.1 th
17、rough 1.2.4.*b. Requirements for price breakdown of Drilled Caisson work are specified in Section 01 22 00.00 10 MEASUREMENT AND PAYMENT.*NOTE: This paragraph anticipates bids on a lump sum price for an entire project including caisson work with directed changes being in accordance with the CONTRACT
18、 CLAUSES or in accordance with unit prices SECTION 31 63 26 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-as defined in paragraph “Separate Unit Prices.“Delete “in accordance with the CONTRACT CLAUSES“ or paragraphs “Tests“ and “Separate Unit
19、 Prices“ for lump sum projects.*1.1.1 Basis of BidsBase the bid on the number and total length of caissons, established by top and bottom elevations and diameters, as indicated and specified. Adjustment of the contract will be made in accordance with the CONTRACT CLAUSES, should the total length of
20、caissons installed and approved be greater or less than the total length shown. The Contractor will not receive payment for rejected caissons or for those not conforming to specifications.1.1.2 Tests1.1.2.1 Load TestThe Contract includes _ load tests rated at _ metric ton ton per caisson. The Contra
21、cting Officer reserves the right to increase or decrease the number of load tests. Adjustments in the contract price will be made for each such increase or decrease by the amount bid for “Additional Caisson Load Test“ or “Omitted Caisson Load Test“.1.1.2.2 Penetration TestThe Contract includes _ pen
22、etration tests. The Contracting Officer reserves the right to increase or decrease the number of penetration tests. Adjustments in the contract price will be made for each such increase or decrease by the amount bid for “Additional Penetration Test“ or “Omitted Penetration Test“.1.1.2.3 Proof Test H
23、oleThe Contract includes _ proof test holes. The Contracting Officer reserves the right to increase or decrease the number of proof test holes. Adjustments in the contract price will be made for each such increase or decrease by the amount bid for “Additional Proof Test Hole“ or “Omitted Proof Test
24、Hole“.1.1.3 Separate Unit Prices1.1.3.1 Additional Caisson LengthsAdditional caisson lengths will be paid for at the contract unit price for “Additional Caisson Length“ for each diameter of caisson installed as approved.1.1.3.2 Omitted Caisson LengthsThe contract price will be reduced by the amount
25、bid for “Omitted Caisson Length“ for each diameter of caisson omitted as directed.1.1.3.3 Casings Permanently Left in PlaceSteel casings permanently left in place due to contract conditions:SECTION 31 63 26 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
26、om IHS-,-,-a. Total pounds of steel beyond casings indicated will be paid for at the contract unit price per pound for “Additional Steel Casing.“b. Omitted Casing Steel: The contract price will be reduced by the amount bid for “Omitted Casing Steel“ omitted as directed.1.1.3.4 Reinforcing Steel for
27、Additional CaissonReinforcing steel for additional caisson lengths will be paid for at the contract unit price for “Additional Caisson Reinforcing Steel“ installed as approved.1.1.3.5 Reinforcing Steel for Caissons OmittedThe contract price will be reduced by the amount bid for “Omitted Caisson Rein
28、forcing Steel“ omitted as directed.1.1.3.6 Removal of RockRemoval of rock within the limit of caissons will be paid for at the contract unit price for “Removal of Rock“ per linear meter foot, for each diameter of caisson installed. Rock excavation is defined as any hard dense material that cannot be
29、 removed with caisson drilling equipment having the specified capacity and could only be removed by hand, air tools, blasting, or other specialized methods.1.1.3.7 Removal of Obstructions Other Than RockRemoval of obstructions other than rock within the limits of the caissons which cannot be removed
30、 using standard caisson drilling equipment with the specified capacity will be paid for at the contract unit price per linear meter foot for “Removal of Obstructions“ for each diameter of caisson installed.1.1.4 Basis Of Payment*NOTE: Where the basis for bidding is based entirely on unit price, subp
31、art 1.2.1 through 1.2.3 should be deleted and the subparts 1.2.4.1 through 1.2.4.5 substituted.*1.1.4.1 Unit PriceThe Contracting Officer has the right to increase or decrease the total length linear footage of drilled foundation caissons to be furnished and installed by changing the foundation cais
32、son elevations, by requiring the installation of additional caissons, or omission of caissons from the requirements shown and specified. Whether or not such changes are made, the Contractor will be paid at the contract unit price per linear meter foot(including test caissons) multiplied by the total
33、 linear meters feet of acceptable caissons actually installed provided, however, that in the event the Contracting Officer requires an increase or decrease in the total lengthlinear footage of caissons furnished and installed, the contract unit price will be adjusted in accordance with the CONTRACT
34、CLAUSES.SECTION 31 63 26 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1.1.4.2 Full CompensationPayment in accordance with the above paragraph Unit Price constitutes full compensation for furnishing, delivering, handling, and/or installing (a
35、s applicable) all material, labor and equipment necessary to meet contract requirements applicable to the foundation caissons. The Contractor will not be allowed payment for rejected caissons.1.1.4.3 Load TestsThe Contract includes _ _ -ton caisson load tests. The Contracting Officer reserves the ri
36、ght to increase or decrease the number of load tests. Adjustments in the contract price will be made for such increases or decreases by the amounts bid for “Additional Caisson Load Test“ or “Omitted Caisson Load Test.“1.1.4.4 Penetration TestsThe Contract includes _ penetration tests. The Contractin
37、g Officer reserves the right to increase or decrease the number of penetration tests. Adjustments in the contract price will be made for such increases or decreases by the amounts bid for “Additional Penetration Test“ or “Omitted Penetration Test.“1.1.4.5 Proof Test HolesThe Contract includes _ proo
38、f test holes. The Contracting Officer reserves the right to increase or decrease the number of proof test holes. Adjustments in the contract price will be made for such increases or decreases by the amounts bid for “Additional Proof Test Hole“ or “Omitted Proof Test Hole.“1.2 REFERENCES*NOTE: This p
39、aragraph is used to list the publications 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 R
40、ID outside of the Sections Reference 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 wh
41、en you choose to reconcile references 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 63 26 Page 7Provided by IHSNot for ResaleNo reproduc
42、tion or networking permitted without license from IHS-,-,-AMERICAN WELDING SOCIETY (AWS)AWS D1.1/D1.1M (2006; Errata 2006) Structural Welding Code - SteelAWS D1.4/D1.4M (2005; Errata 2005) Structural Welding Code - Reinforcing SteelASTM INTERNATIONAL (ASTM)ASTM A 123/A 123M (2002) Standard Specifica
43、tion for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel ProductsASTM A 36/A 36M (2005) Standard Specification for Carbon Structural SteelASTM A 615/A 615M (2008) 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 Concrete ReinforcementASTM D 1143/D 1143M (2007) Piles Under Static Axial Compressive LoadASTM D 1586 (2008) Penetration Test and Split-Barrel Sampling of Soils1.3 SUBMITTALS*NOTE: Review submittal description (SD) definitions in S
