1、*USACE / NAVFAC / AFCESA / NASA UFGS-33 26 00.00 10 (April 2008)-Preparing Activity: USACE (CW) SupersedingUFGS-33 26 00.00 10 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated March 2008*SECTION TABLE OF CONTENTSDIVISION 33 - UTILITIESSECTION 33 26 00.00
2、 10RELIEF WELLS04/08PART 1 GENERAL1.1 UNIT PRICES1.1.1 Relief Wells1.1.1.1 Payment1.1.1.2 Measurement1.1.1.3 Unit of measure1.1.2 Pump Tests1.1.2.1 Payment1.1.2.2 Measurement1.1.2.3 Unit of measure1.1.3 Pump Installation/Removal1.1.3.1 Payment1.1.3.2 Measurement1.1.3.3 Unit of measure1.2 REFERENCES1
3、.3 SUBMITTALS1.4 QUALITY ASSURANCE1.4.1 Shop Drawings1.4.2 Depth of Well1.4.3 Well Design1.5 PROJECT/SITE CONDITIONS1.5.1 Location1.5.2 Obstructions EncounteredPART 2 PRODUCTS2.1 WELL SCREEN2.1.1 PVC Pipe Screen2.1.1.1 Couplings2.1.1.2 Perforations2.1.2 Fiberglass Pipe Screen2.1.2.1 Couplings2.1.2.2
4、 Perforations2.1.3 Steel Pipe Screen2.1.3.1 CouplingsSECTION 33 26 00.00 10 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.1.3.2 Perforations2.1.4 Stainless Steel Well Screen2.1.4.1 Couplings2.1.4.2 Perforations2.1.5 Tailpipe for Well Screen
5、2.2 RISER PIPE2.3 FILTER PACK2.4 CHECK VALVES2.5 CONCRETEPART 3 EXECUTION3.1 DRILLING3.1.1 Reverse Circulation Method3.1.2 Temporary Casing3.2 INSTALLATION OF RISER PIPE AND SCREEN3.2.1 Assembly3.2.2 Joints3.2.3 Installation3.2.4 Check for Plumbness and Alignment3.2.4.1 Plumbness3.2.4.2 Alignment3.3
6、 FILTER PACK PLACEMENT3.4 DEVELOPMENT3.5 BACKFILLING3.6 PLUGGING OF ABANDONED WELLS3.7 TESTS3.7.1 Pump Test3.7.2 Sand Test3.7.3 Filter Pack Sampling and Testing3.7.4 Reports- End of Section Table of Contents -SECTION 33 26 00.00 10 Page 2Provided by IHSNot for ResaleNo reproduction or networking per
7、mitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-33 26 00.00 10 (April 2008)-Preparing Activity: USACE (CW) SupersedingUFGS-33 26 00.00 10 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated March 2008*SECTION 33 26 00.00 10RELIEF WE
8、LLS04/08*NOTE: This guide specification covers the requirements for relief wells, (except materials and equipment specified to be furnished by the Government) to be constructed near dams or levees to relieve the excess hydrostatic pressures created by the presence of pervious strata close to the sur
9、face.Edit this guide specification for project specific requirements by adding, deleting, or revising text. For bracketed items, choose applicable items(s) or insert appropriate information.Remove information and requirements not required in respective project, whether or not brackets are present.Co
10、mments and suggestions on this guide specification are welcome and should be directed to the technical proponent of the specification. A listing of technical proponents, including their organization designation and telephone number, is on the Internet.Recommended changes to a UFGS should be submitte
11、d as a Criteria Change Request (CCR).*PART 1 GENERAL*NOTE: Relief wells should be constructed of materials which will resist corrosion when installed and should, where practicable, be designed to have a service life equal to that of the structure they are designed to protect. Factors to be considere
12、d in determining selection of material for wells are:1. Operating conditions of wells,2. Corrosive characteristics of soil and water,3. Method of installations,4. Size and depth of wells,SECTION 33 26 00.00 10 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license
13、 from IHS-,-,-5. Type of joints, and6. External pressures on well casings.The riser pipe and screen should be designed in all cases to withstand, with a suitable factor of safety, the crushing pressures at depths to which wells extend. Design of relief wells to be constructed under structures must c
14、onsider loads that will be induced into the well pipe due to structural settlement. The wells, including screen and riser pipe, should have a diameter which will permit the maximum design flow without excessive head losses but in no instance should the inside diameter be less than 150 mm (6 inches).
15、 Based on design parameters it may require the designer to include a minimum collapse strength for the pipe and well screen and a minimum clear inside diameter through the fittings and screen to allow the installation of pumps at a later date.Because of the large variation in design and wall thickne
16、ss of the different types of well screen, no generic specifications have been included. For large contracts, specific necessary characteristics should be presented in detail. References to manufacturers should be eliminated.Information on the design of filter packs and relief wells can be found in t
17、he Engineering Manual EM 1110-2-1901, “Seepage Analysis and Control for Dams“. The filter criteria specified in EM 1110-2-1901 should be used to determine the gradation band of the filter material. To minimize segregation during installation of the filter pack, the filter should have a relatively un
18、iform grain-size distribution band. The gradation band of the filter material should be more or less parallel to the gradation curve of the material being drained. No point on the coarser filter gradation curve should be greater than 25 times the corresponding size of the material being drained.The
19、filter material should have a minimum thickness of 150 mm (6 inches) measured radially from the outer circumference of the screen section, and its gradation should depend upon the gradation of the strata being drained. Where unusual conditions are encountered, filter tests should be performed in the
20、 laboratory using the foundation sand and the selected filter. For examples of laboratory investigations refer to Technical Report GL-87-22, dated August 1987, “Laboratory Tests on Granular Filters for Embankment Dams (Includes Appendixes A-E)“; and Technical Memoranda (TM) 183-1, dated Nov 1941, Re
21、v Dec 1941, “Investigation of Filter Requirements for Underdrains“; and Technical Memoranda (TM) 195-1, dated Oct 1942, “Field and Laboratory Investigation of Design Criteria for Drainage Wells“, U. S. Waterways Experiment SECTION 33 26 00.00 10 Page 4Provided by IHSNot for ResaleNo reproduction or
22、networking permitted without license from IHS-,-,-Station. Because of the high potential for clogging by migrating fines or chemical precipitate, filter cloth should not be used to protect relief well screens.In adapting this specification to any project the form and phraseology should be changed as
23、 necessary to properly specify the work contemplated. Changes should be made in the original form to the extent required to adapt the guide specification to local conditions. Work such as concrete for backfill, painting of exposed metal surfaces and seeding of construction areas will have to be spec
24、ified in this section when such sections cannot be referenced as a part of the contract.For projects on which subsurface information is not sufficiently developed to permit detailed design of each well, a section should be added to the specifications requiring the drilling of a small diameter pilot
25、hole at the location of each well. Pilot holes should be sampled and logged in sufficient detail to define the gradation of pervious zones and the depths between which screens should be set. The specifications should require that samples of pervious materials be taken at 750 mm (2.5 foot) intervals
26、of depth. Grain-size distribution tests should be performed to provide a basis for the design of the filter pack and the screen openings. Samples taken by fishtail drilling and other wash boring methods will not be permitted. Where the subsurface information previously obtained is sufficient, pilot
27、holes are not required.*1.1 UNIT PRICES*NOTE: If Section 01 22 00.00 10 MEASUREMENT AND PAYMENT is included in the project specifications, this paragraph title (UNIT PRICES) should be deleted from this section and the remaining appropriately edited subparagraphs below should be inserted into Section
28、 01 22 00.00 10.*1.1.1 Relief Wells1.1.1.1 PaymentPayment will be made for costs associated with relief wells, which price shall constitute full compensation for construction of relief wells. Wells ordered abandoned by the Contracting Officer before installation of well screen and riser due to no fa
29、ult of the Contractor will be paid for at _ percent of the contract unit price per linear meter foot, for Bid Item No. _ “Relief Wells“. Wells ordered abandoned by the Contracting Officer due to no fault of the Contractor will be paid for at the full contract unit price for Bid Item No. _ “Relief We
30、lls“. No SECTION 33 26 00.00 10 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-payment will be made for placement or replacement of temporary casings or repair of damage resulting from Contractor operations. No separate payment will be made fo
31、r relief well screen, riser, check valves, gravel pack, development, backfill, discharge or outfall pipes. No payment will be made for any wells that, in the opinion of the Contracting Officer, are abandoned due to Contractor fault or neglect.1.1.1.2 MeasurementRelief wells will be measured for paym
32、ent by the linear meter foot of completed well between ground surface and 300 mm 1 foot below the bottom of the well screentail pipe. Wells ordered abandoned by the Contracting Officer, due to no fault of the Contractor, will be measured for payment.1.1.1.3 Unit of measureUnit of measure: linear met
33、er foot.1.1.2 Pump Tests1.1.2.1 PaymentPayment will be made for costs associated with pump test, which price shall constitute full compensation to perform a satisfactory pump test as specified. No payment will be made for pump test not successfully completed.1.1.2.2 MeasurementPump tests will be mea
34、sured for payment for each hour, measured to the nearest 15 minutes, of pump test successfully performed as specified in paragraph PUMP TEST, and as otherwise directed. Testing time will not include time required to place and remove testing and pump equipment.1.1.2.3 Unit of measureUnit of measure:
35、per hour.1.1.3 Pump Installation/Removal1.1.3.1 PaymentPayment will be made for costs associated with installation and removal of the pumps used in pay item “Pump Tests“. No payment will be made for pump installation removal where pump test was not successfully completed.1.1.3.2 MeasurementPump inst
36、allation/removal for pump test will be measured for payment on the base of the applicable contract unit price per relief well pump tested.1.1.3.3 Unit of measureUnit of measure: each.1.2 REFERENCES*NOTE: This paragraph is used to list the SECTION 33 26 00.00 10 Page 6Provided by IHSNot for ResaleNo
37、reproduction or networking permitted without license from IHS-,-,-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 Che
38、ck Reference feature when you add a RID 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 se
39、ction of the project specification when 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.ASME INTERNATIONAL (ASME)A
40、SME B1.20.1 (1983; R 2006) Pipe Threads, General Purpose (Inch)ASME B31.9 (2004) Building Services PipingASTM INTERNATIONAL (ASTM)ASTM A 312/A 312M (2007) Standard Specification for Seamless, Welded, and Heavily Worked Austenitic Stainless Steel PipesASTM A 53/A 53M (2007) Standard Specification for
41、 Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and SeamlessASTM C 136 (2006) Standard Test Method for Sieve Analysis of Fine and Coarse AggregatesASTM C 33 (2003) Standard Specification for Concrete AggregatesASTM C 387/C 387M (2006a) Standard Specification for Packaged, Dry, Combined Mater
42、ials for Mortar and ConcreteASTM C 94/C 94M (2007) Standard Specification for Ready-Mixed ConcreteASTM D 1056 (2007) Standard Specification for Flexible Cellular Materials - Sponge or Expanded RubberASTM D 1784 (2007) Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Compounds and SECTION
43、33 26 00.00 10 Page 7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Chlorinated Poly(Vinyl Chloride) (CPVC) CompoundsASTM D 1785 (2006) Standard Specification for Poly(Vinyl Chloride) (PVC), Plastic Pipe, Schedules 40, 80, and 120ASTM D 2466 (2006)
44、Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40ASTM D 2467 (2006) Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80ASTM D 2564 (2004e1) Standard Specification for Solvent Cements for Poly(Vinyl Chloride) (PVC) Plastic Pi
45、ping SystemsASTM D 297 (1993; R 2006) Rubber Products - Chemical AnalysisASTM D 412 (2006a) Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers - TensionASTM D 75 (2003) Standard Practice for Sampling AggregatesASTM E 11 (2004) Wire Cloth and Sieves for Testing Purposes1.3 SUBMITTALS*NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL PROCEDURES and edit the following list to reflect only the s
