1、*USACE / NAVFAC / AFCESA / NASA UFGS-02 66 00 (February 2010)-Preparing Activity: USACE SupersedingUFGS-02 66 00 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated April 2010*SECTION TABLE OF CONTENTSDIVISION 02 - EXISTING CONDITIONSSECTION 02 66 00SELECT
2、FILL AND TOPSOIL FOR LANDFILL COVER02/10PART 1 GENERAL1.1 UNIT PRICES1.2 REFERENCES1.3 SUBMITTALSPART 2 PRODUCTS2.1 Select Fill2.2 TOPSOIL2.3 EQUIPMENTPART 3 EXECUTION3.1 BORROW SOURCE ASSESSMENT REPORT3.1.1 Select Fill3.1.1.1 Classification Testing3.1.1.2 Moisture-Density (Compaction) Testing3.1.2
3、Topsoil3.1.3 Chemical Contamination Testing3.2 INSTALLATION3.2.1 Select Fill Placement3.2.1.1 Initial Lift of Select Fill Placed Over Geosynthetics3.2.1.2 Subsequent Lifts of Select Fill3.2.2 Topsoil Placement3.3 CONSTRUCTION TOLERANCES3.4 CONSTRUCTION TESTS3.4.1 Select Fill and Topsoil Material Tes
4、ts3.4.2 Moisture Content and Density Tests of In-Place Select Fill3.4.2.1 Test Frequencies and Locations3.4.2.2 Nuclear Density and Moisture Content Tests3.4.2.3 Test Results3.5 PROTECTION3.5.1 Damage3.5.2 StockpilesSECTION 02 66 00 Page 1Provided by IHSNot for ResaleNo reproduction or networking pe
5、rmitted without license from IHS-,-,- End of Section Table of Contents -SECTION 02 66 00 Page 2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-02 66 00 (February 2010)-Preparing Activity: USACE SupersedingUFGS-02
6、66 00 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated April 2010*SECTION 02 66 00SELECT FILL AND TOPSOIL FOR LANDFILL COVER02/10*NOTE: This guide specification covers the requirements for select fill and topsoil layers for landfill cover systems. Select
7、 fill is the term used by USACE to describe soil layers placed directly on geosynthetic materials.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 informatio
8、n 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 technical proponents, including their organization designat
9、ion 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 PRICES*NOTE: Delete this paragraph when work is covered by a lump-sum contract price. Weight measurement may be used to supplement volume measurem
10、ent surveys if significant subgrade settlement is anticipated.*Measurement and payment for “select fill“ and “topsoil“ shall be based on the respective unit prices for each cubic meter yard of “select fill“ and “topsoil“ in place. This unit price shall include the cost for development of borrow sour
11、ces, cost of materials, excavation, hauling, equipment, SECTION 02 66 00 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-placement, testing, and other work required to construct the “select fill“ or “topsoil“ layers.1.2 REFERENCES*NOTE: This pa
12、ragraph 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 RI
13、D 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 whe
14、n 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.ASTM INTERNATIONAL (ASTM)ASTM D 1556 (2007) Density and Unit Wei
15、ght of Soil in Place by the Sand-Cone MethodASTM D 2167 (2008) Density and Unit Weight of Soil in Place by the Rubber Balloon MethodASTM D 2216 (2005) Laboratory Determination of Water (Moisture) Content of Soil and Rock by MassASTM D 2487 (2006e1) Soils for Engineering Purposes (Unified Soil Classi
16、fication System)ASTM D 2974 (2007a) Moisture, Ash, and Organic Matter of Peat and Other Organic SoilsASTM D 422 (1963; R 2007) Particle-Size Analysis of SoilsASTM D 4318 (2005) Liquid Limit, Plastic Limit, and Plasticity Index of SoilsASTM D 4972 (2001; R 2007) pH of SoilsASTM D 6938 (2008a) Standar
17、d Test Method for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)SECTION 02 66 00 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASTM D 698 (2007e1) Laboratory Compaction Characteristics of Soil
18、 Using Standard Effort (12,400 ft-lbf/cu. ft. (600 kN-m/cu. m.)1.3 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 to the minimum req
19、uired 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 Quality Control s
20、ystem. 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 approving authorit
21、y. 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 following the “G“ t
22、ypically are not used for Navy, Air Force, and NASA projects.Choose the first bracketed item for Navy, Air Force and NASA projects, or choose the second bracketed item for Army projects.*Government approval is required for submittals with a “G“ designation; submittals not having a “G“ designation ar
23、e for Contractor Quality Control approval. 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-03 Product DataMaterials Handl
24、ing PlanSD-04 SamplesSelect FillTopsoilSD-06 Test ReportsSECTION 02 66 00 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Borrow Source Assessment Report; G; G, _Select Fill and Topsoil Material TestsMoisture Content and Density Tests of In-Pla
25、ce Select FillPART 2 PRODUCTS2.1 Select Fill*NOTE: The default maximum allowable particle size is 25 mm (1 inch). If the select fill layer will be placed directly on top of a geomembrane, this value may have to be reduced and restrictions regarding angularity may have to be included. Manufacturers s
26、hould be consulted for recommendations on select fill based on the type and thickness of geomembrane being used.Selection of suitable select fill should be based on the type and availability of soils at or close to the site. The designer must verify that these soils will not clog underlying drainage
27、 layers. The soil types listed in Table 1 are generally acceptable for use as select fill.Sands must be analyzed to ensure they are internally stable. A soil is internally stable if it is self-filtering (i.e., the fine particles do not move through the pores of the coarser fraction). Federal Highway
28、 Administration Publication No. FHWA-HI-95-038 describes procedures for determining the clogging potential and internal stability of soil.The designer must also ensure the select fill is compatible with the underlying filter. For landfill applications, the filter is typically a geotextile. Filter de
29、sign is based on a comparison of the grain size distribution (ASTM D 422) of the select fill and the apparent opening size (AOS) of the underlying geotextile. Geotextile filter design procedures are outlined in Federal Highway Administration Publication No. FHWA-HI-95-038.Criteria for Atterberg limi
30、ts are sometimes included in Table 1 to control the properties of the select fill.Hydraulic conductivity criteria may also need to be added to Table 1 for the select fill soil. The hydraulic conductivity of the select fill layer controls the rate at which precipitation infiltrates into the underlyin
31、g drainage layer.*Select fill shall comply with the criteria listed in Table 1 and shall be free of debris, frozen materials, angular rocks, roots, and organics. Submit a minimum of 23 kg 50 pounds of select fill from each proposed SECTION 02 66 00 Page 6Provided by IHSNot for ResaleNo reproduction
32、or networking permitted without license from IHS-,-,-borrow source to the Governments designated laboratory at least 15 _ days prior to placement.2.2 TOPSOILTopsoil shall consist of natural, friable soil that is representative of soils in the vicinity which produce heavy growths of crops, grass, or
33、other vegetation and is reasonably free from underlying subsoil, clay lumps, objectionable weeds, litter, brush, matted roots, toxic substances, or any material that might be harmful to plant growth or be a hindrance to grading, planting, or maintenance operations. Submit a minimum of 2 kg 5 pounds
34、of topsoil from each proposed borrow source to the Governments designated laboratory at least 15 _ days prior to placement. Topsoil shall also comply with the criteria listed in Table 1.TABLE 1REQUIRED PHYSICAL PROPERTIES OF SELECT FILL AND TOPSOILTest TestProperty Value Method_ _ _Select FillSoil c
35、lassification Lean clay (CL) ASTM D 2487Clayey sand (SC)Clayey gravel (GC)_Max. particle size (mm) 25 _ ASTM D 422TopsoilMax. particle size (mm) 25 ASTM D 422pH 5-7 ASTM D 4972Organic content (%) 5-20 ASTM D 2974TABLE 1REQUIRED PHYSICAL PROPERTIES OF SELECT FILL AND TOPSOILTest TestProperty Value Me
36、thod_ _ _Select FillSoil classification Lean clay (CL) ASTM D 2487Clayey sand (SC)Clayey gravel (GC)_Max. particle size (inches) 1.0 _ ASTM D 422TopsoilMax. particle size (inches) 1 ASTM D 422pH 5-7 ASTM D 4972Organic content (%) 5-20 ASTM D 2974SECTION 02 66 00 Page 7Provided by IHSNot for ResaleNo
37、 reproduction or networking permitted without license from IHS-,-,-2.3 EQUIPMENTEquipment used to place the select fill and topsoil layers shall be as described in the approved Materials Handling Plan, including ground pressures. Equipment shall not accelerate or brake suddenly, turn sharply, or be
38、operated at speeds exceeding 8 km 5.0 miles per hour.PART 3 EXECUTION3.1 BORROW SOURCE ASSESSMENT REPORTSubmit a Borrow Source Assessment Report at least 15 _ days prior to select fill and topsoil placement. No select fill or topsoil shall be placed until the Borrow Source Assessment Report is appro
39、ved. The report shall include the following: location of each borrow source; estimated quantity of borrow available; logs of subsurface explorations; and laboratory test results.3.1.1 Select Fill*NOTE: A test fill should be required when needed to demonstrate placement technique or to determine cove
40、r or liner stability. Section 02 66 10 TEST FILL can be edited and included in the specification package if a test fill will need to be constructed.Shear strength testing is often required for landfill covers and liners which contain geosynthetics. Criteria for shear strength testing are described i
41、n Section 02 56 13 WASTE CONTAINMENT GEOMEMBRANE or Section 02 56 15 GEOSYNTHETIC CLAY LINER (GCL).*3.1.1.1 Classification TestingBorrow source assessment tests shall be performed on each principal type or combination of materials proposed for use in the select fill layer to ensure compliance with s
42、pecified requirements. At least one set of borrow assessment tests shall be performed on each borrow source proposed for use. A set of borrow source assessment tests shall consist of Atterberg limits (ASTM D 4318), particle size analysis (ASTM D 422), and moisture content (ASTM D 2216). Based on bor
43、row source assessment testing, soils shall be classified in accordance with ASTM D 2487.3.1.1.2 Moisture-Density (Compaction) Testing*NOTE: Delete this paragraph if compaction requirements will not be specified for the select fill layer.*A representative sample from each principal type or combination of borrow materials shall be tested to establish compa
