1、*USACE / NAVFAC / AFCESA / NASA UFGS-31 05 19 (August 2008)-Preparing Activity: USACE SupersedingUFGS-31 05 19 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONReferences are in agreement with UMRL dated July 2008*SECTION TABLE OF CONTENTSDIVISION 31 - EARTHWORKSECTION 31 05 19GEOTEXTILE08/08PART 1
2、 GENERAL1.1 MEASUREMENT1.2 PAYMENT1.3 REFERENCES1.4 SUBMITTALS1.5 DELIVERY, STORAGE, AND HANDLING1.5.1 Delivery1.5.2 Storage1.5.3 HandlingPART 2 PRODUCTS2.1 RAW MATERIALS2.1.1 Geotextile2.1.2 Thread2.2 MANUFACTURING QUALITY CONTROL SAMPLING AND TESTINGPART 3 EXECUTION3.1 QUALITY ASSURANCE SAMPLES AN
3、D TESTS3.1.1 Quality Assurance Samples3.1.2 Quality Assurance Tests3.2 INSTALLATION3.2.1 Subgrade Preparation3.2.2 Placement3.3 SEAMS3.3.1 Overlap Seams3.3.2 Sewn Seams3.4 PROTECTION3.5 REPAIRS3.6 PENETRATIONS3.7 COVERING- End of Section Table of Contents -SECTION 31 05 19 Page 1Provided by IHSNot f
4、or ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-31 05 19 (August 2008)-Preparing Activity: USACE SupersedingUFGS-31 05 19 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONReferences are in agreement with UMRL dated July 2008*SECTION
5、 31 05 19GEOTEXTILE08/08*NOTE: This guide specification covers requirements for geotextiles.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
6、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 designation an
7、d telephone number, is on the Internet.Recommended changes to a UFGS should be submitted as a Criteria Change Request (CCR).*PART 1 GENERAL*NOTE: The “Geotextile Engineering Manual“ by the Federal Highway Administration and “Designing with Geosynthetics“ by Robert M. Koerner provide information on d
8、esign criteria and example calculations used for the design of geotextiles.*1.1 MEASUREMENT*NOTE: Delete paragraphs MEASUREMENT and PAYMENT when lump sum bidding is used.*Measure the as-built surface area, covered by geotextile, in square meters SECTION 31 05 19 Page 2Provided by IHSNot for ResaleNo
9、 reproduction or networking permitted without license from IHS-,-,-yards. Allowance will be made for geotextile in anchor and/or drainage trenches but no allowance will be made for waste, overlaps, damaged materials, repairs, or materials used for the convenience of the Contractor.1.2 PAYMENTGeotext
10、ile installed and accepted will be paid for at the respective contract unit price in the bidding schedule. This unit price will include the cost of materials, equipment, installation, testing, and other costs associated with placement of the geotextile.1.3 REFERENCES*NOTE: This paragraph is used to
11、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 RID outside of the Se
12、ctions 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 when you choose to rec
13、oncile 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 4354 (1999; R 2004) Sampling of Geosynthetics for T
14、estingASTM D 4355 (2007) Deterioration of Geotextiles from Exposure to Light, Moisture and Heat in a Xenon-Arc Type ApparatusASTM D 4491 (1999a; R 2004e1) Water Permeability of Geotextiles by PermittivityASTM D 4533 (2004) Trapezoid Tearing Strength of GeotextilesASTM D 4632 (1991; R 2003) Grab Brea
15、king Load and Elongation of GeotextilesASTM D 4751 (2004) Determining Apparent Opening Size of a GeotextileSECTION 31 05 19 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASTM D 4759 (2002; R 2007) Determining the Specification Conformance of
16、GeosyntheticsASTM D 4833 (2007) Index Puncture Resistance of Geotextiles, Geomembranes, and Related ProductsASTM D 4873 (2002) Identification, Storage, and Handling of Geosynthetic Rolls and Samples1.4 SUBMITTALS*NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL PROCE
17、DURES and edit the following list to reflect only the submittals required for the project. Submittals should be kept to 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 wit
18、h a “G”. Only delete an existing “G” if the submittal item is not complex and can be reviewed through the Contractors 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,
19、a code of up to three characters within the submittal tags may be used following the “G“ designation to indicate the approving authority. Codes for Army projects using the Resident Management System (RMS) are: “AE“ for Architect-Engineer; “DO“ for District Office (Engineering Division or other organ
20、ization in the District Office); “AO“ for Area Office; “RO“ for Resident Office; and “PO“ for Project Office. Codes following the “G“ typically 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 it
21、em 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 submitt
22、al for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:SD-03 Product DataThreadA minimum of 7 _ days prior to scheduled use, proposed thread type for sewn seams along with data sheets showing the SECTION 31 05 19 Page 4Provided by IHSNot for ResaleNo rep
23、roduction or networking permitted without license from IHS-,-,-physical properties of the thread.Manufacturing Quality Control Sampling and TestingA minimum of 7 _ days prior to scheduled use, manufacturers quality control manual.SD-04 SamplesQuality Assurance Samples and TestsSamples for quality as
24、surance testing; assign 7 _ days in the schedule to allow for testing.SD-07 CertificatesGeotextileA minimum of 7 _ days prior to scheduled use, manufacturers certificate of compliance stating that the geotextile meets the requirements of this section. For needle punched geotextiles, the manufacturer
25、 shall also certify that the geotextile has been continuously inspected using permanent on-line full-width metal detectors and does not contain any needles which could damage other geosynthetic layers. The certificate of compliance shall be attested to by a person having legal authority to bind the
26、geotextile manufacturer.1.5 DELIVERY, STORAGE, AND HANDLINGDeliver, store, and handle geotextile in accordance with ASTM D 4873.1.5.1 DeliveryNotify the Contracting Officer a minimum of 24 hours prior to delivery and unloading of geotextile rolls packaged in an opaque, waterproof, protective plastic
27、 wrapping. The plastic wrapping shall not be removed until deployment. If quality assurance samples are collected, immediately rewrap rolls with the plastic wrapping. Geotextile or plastic wrapping damaged during storage or handling shall be repaired or replaced, as directed. Label each roll with th
28、e manufacturers name, geotextile type, roll number, roll dimensions (length, width, gross weight), and date manufactured.1.5.2 StorageProtect rolls of geotextile from construction equipment, chemicals, sparks and flames, temperatures in excess of 71 degrees C 160 degrees F, or any other environmenta
29、l condition that may damage the physical properties of the geotextile. To protect geotextile from becoming saturated, either elevate rolls off the ground or place them on a sacrificial sheet of plastic in an area where water will not accumulate.1.5.3 HandlingHandle and unload geotextile rolls with l
30、oad carrying straps, a fork lift with a stinger bar, or an axial bar assembly. Rolls shall not be dragged along the ground, lifted by one end, or dropped to the ground.SECTION 31 05 19 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PART 2 PROD
31、UCTS2.1 RAW MATERIALS2.1.1 Geotextile*NOTE: This note contains information from Standard Specifications for Transportation Materials and Methods of Sampling and Testing, Part I - Specifications, Copyright 1999 by the American Association of State Highway and Transportation Officials (AASHTO), Washin
32、gton, D.C. AASHTO has given permission to use this information.Values for grab strength, seam strength, tear strength, and puncture strength for various applications can be obtained from the AASHTO M 288 - Standard Specification for Geotextiles. The most recent version of M 288 should be used as a r
33、eference. The table in M 288 is divided into three geotextile classes. The severity of installation conditions for the application generally dictates the required geotextile class.The following values for permittivity and apparent opening size (AOS) are from AASHTO M 288. Values for permittivity and
34、 maximum AOS should be compared to actual values of commonly manufactured products to assure there are a sufficient number of manufacturers who can meet specifications.AASHTO M288 PERMITIVITY AND AOS REQUIREMENTS-SOIL TO BE MINIMUM MAXIMUMFILTERED PERMITIVITY AOS-TEST METHOD ASTM D 4491 ASTM D 4751-
35、UNITS (1/SECONDS) (MM)-LESS THAN 15 PERCENT 0.5 0.43 PASSING NO. 200 (NO. 40 SIEVE)-15 TO 50 PERCENT 0.2 0.25PASSING NO. 200 (NO. 60 SIEVE)-GREATER THAN 15 PERCENT 0.1 0.22PASSING NO. 200 (NO. 70 SIEVE)-The values listed above provide general guidance only. A site specific geotextile design should b
36、e performed especially if one or more of the following problematic soil environments are encountered: unstable or highly erodible soils such as non-cohesive silts; gap graded soils; alternating sand/silt laminated soils; dispersive clays; or rock flour. For cohesive soils with a plasticity index SEC
37、TION 31 05 19 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-greater than 7, the geotextile maximum average roll value for AOS should be 0.30 mm (No. 50 sieve).Compatibility testing should be considered in situations where the geotextile will
38、be exposed to chemicals which could degrade its physical properties. Refer to ASTM D 5322 - Practice for Immersion Procedures for Evaluating the Chemical Resistance of Geosynthetics to Liquids for additional guidance on compatibility testing.Geotextiles may also be used to provide puncture protectio
39、n for geomembranes. Needle-punched nonwoven geotextiles are commonly used to provide puncture protection. GRI Report Number 13 - A Design Methodology for the Puncture Protection of Geomembranes provides guidance on the design of geotextile cushion layers. Typical index properties for a 350 g/square
40、meter geotextile are shown below:MINIMUM REQUIREMENTS FOR PROTECTION GEOTEXTILE-PROPERTY UNITS ACCEPTABLE VALUES TEST METHOD-GRAB STRENGTH N 1420 ASTM D 4632-PUNCTURE N 930 ASTM D 4833-TRAP TEAR N 555 ASTM D 4533-MASS/ G/SQ M 350 ASTM D 4751UNIT AREA -UV PERCENT 50 AT 500 HRS ASTM D 4355DEGRADATION
41、-Apparent opening size and permittivity are not critical properties when specifying geotextiles used for puncture protection. Seams for protection geotextiles are generally overlapped a minimum of 305 mm (12 inches). Sewn seams are generally not used for puncture protection geotextiles.*Provide geotextile that is a woven nonwoven pervious sheet of polymeric material consisting of long-chain synthetic polymers composed of at least 95 percent by weight polyolefins, polyesters, or polyamides. The use of woven slit film geotextiles (i.e. geotextiles made from yarns of a flat, tape-like char
