1、Designation: D8057 17Standard Specification forInlet Filters with a Rigid Frame1This standard is issued under the fixed designation D8057; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in paren
2、theses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers geosynthetic storm sewer inletfilters used in highway drainage, roadway, residential,commercial, and industrial applications
3、. The inlet filter iscomprised of a rigid frame and a removable geosyntheticsediment bag. The sediment bag hangs suspended from therigid frame and includes a bypass that shall allow water flowinto the drainage structure if the bag is completely filled withsediment. Water flow through the bypass shal
4、l equal or exceedthe design flow of the inlet required at a specified drainagelocation.1.2 The requirements of this specification are intended toprovide an inlet filter system to collect sediment, trash, leaves,and other storm water contaminants from surface storm waterrunoff at drainage inlet locat
5、ions during temporary site con-struction.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory
6、 limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organiz
7、ation TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D4439 Terminology for GeosyntheticsD5141 Test Method for Determining Filtering Efficiency andFlow Rate of the Filtration Component of a SedimentRetention DeviceD7351 Test Method for Determination of Sediment
8、Reten-tion Device Effectiveness in Sheet Flow Applications2.2 AASHTO Standards:3AASHTO M288 Geotextile Materials3. Terminology3.1 Definitions:3.1.1 For definitions of terms relating to geosynthetics, referto Terminology D4439.3.2 Definitions of Terms Specific to This Standard:3.2.1 design flow rate
9、of the inlet, nthe design flow to thedrainage structure.3.2.2 treatment flow rate, nthe design flow that is intendedto be filtered through the sediment bag.4. Classification4.1 GeneralThis specification covers geosynthetic stormsewer inlet filters used in highway drainage, roadway,residential, comme
10、rcial, and industrial applications. The inletfilter is comprised of a rigid frame and a removable geosyn-thetic sediment bag fixed to the frame by a positive connectionwith adequate strength to support the weight of the sedimentbag when completely full.4.2 This product can be used with round, rectan
11、gular, gutter,rolled curb, and curb inlet types.5. Ordering Information5.1 When ordering material in accordance with thisspecification, the following should be specified:5.1.1 The inlet type, grate length and width, or diameter,5.1.2 The inlet clear opening length and width, or diameter,5.1.3 The fr
12、ame materials,5.1.4 The geosynthetic bag physical properties,5.1.5 The geosynthetic bag volume capacity,5.1.6 The treatment flow rate, and5.1.7 The design flow rate of the inlet.6. Materials and Manufacture6.1 Basic MaterialsThese products are comprised of arigid frame and geosynthetic sediment bag.
13、 The sediment bag1This specification is under the jurisdiction of ASTM Committee D35 onGeosynthetics and is the direct responsibility of Subcommittee D35.03 on Perme-ability and Filtration.Current edition approved May 1, 2017. Published May 2017. Originallyapproved in 2017. DOI: 10.1520/D8057-17.2Fo
14、r referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American Association of State Highway and Transp
15、ortationOfficials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,http:/www.transportation.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with international
16、ly recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1must be sized appropriately to meet the treatment flow r
17、aterequired. The sediment bag hangs suspended from the rigidframe and includes a bypass that shall allow water flow into thedrainage structure if the bag is completely filled with sediment.Water flow through the bypass shall equal or exceed the designflow of the inlet required at the specified drain
18、age location.6.1.1 FrameThe rigid frame shall be designed to supportthe design load on the frame. The frame must be capable ofsupporting the full design load without deformation when thegrate is removed. The frame shall not interfere with or elevatethe grate more than18 in.6.1.1.1 Calculate the desi
19、gn load, P, as follows:P 5 2satV (1)where:P = frame design load, lb,sat= unit weight of saturated soil, 120 lb ft3, andV = volume of sediment bag, ft3.6.1.1.2 The design engineer may specify a design loadbased on site-specific conditions, including a minimum designload.6.1.1.3 When specifying the fr
20、ame material, the designengineer should consider the materials ability to satisfystructural and durability requirements of the project, such asthe ability to resist damage from impact and vehicle loading,deflection, and buckling, and the ability to support a long-termload.6.1.2 Sediment Bag Geosynth
21、etic MaterialsThe sedimentbag shall be manufactured from a geotextile material or acomposite of geotextile and geosynthetic reinforcement. Geo-textiles shall meet the requirements of AASHTO M288 Class 1or 2 for subsurface drainage. The sediment bag must maintainshape to be extractable when completel
22、y filled with sediment.The bag must be sized appropriately to meet the treatment flowrate required.6.1.3 Sediment Bag Geosynthetic Materials When Used forTrash RemovalWhen used for removal of trash or largedebris only, the geosynthetic sediment bag may be constructedof open-weave geosynthetic. The o
23、pening size of the open-weave geosynthetic will be as specified by the engineer andmust be sized appropriately to remove the desired trash andlarge debris. The sediment bag must maintain shape to beextractable when completely filled with sediment, trash, ordebris. The bag must be sized appropriately
24、 to meet thetreatment flow rate required at the specified drainage structure.6.1.4 Bypass:6.1.4.1 Bypass Located in the FrameThe sediment baghangs suspended from the rigid frame with a bypass that shallallow water flow into the drainage structure if the bag iscompletely filled with sediment. Water f
25、low through the bypassshall equal or exceed the design flow of the inlet required at aspecified drainage location.6.1.4.2 Bypass Located in the Sediment BagOpenings areincluded in the sediment bag that shall allow water flow intothe drainage structure if the bag is filled with sediment to thelevel o
26、f the openings. The openings shall be sized so that waterflow through the bypass shall equal or exceed the design flowof the inlet required at a specified drainage location. Thevolume of the bag shall be calculated as the volume below thebypass openings. The openings in the sediment bag shall beunif
27、ormly made and reinforced. The strength of the reinforcedopenings in the bag shall be 90 % of the specified grabstrength of the geosythetic bag material.6.1.5 Frame ConnectionThe sediment bag hangs sus-pended from the rigid frame. The geosynthetic is fixed to theframe by a positive connection capabl
28、e of supporting the fullweight of the geotextile bag when completely full withsediment. The geosynthetic bag must be removable to facilitatereplacement. The sediment bag can be located in the frame orsupported by the frame if the means of connection to the framesupports the full weight of the geotex
29、tile bag when completelyfull with sediment and allows for full bypass flow.7. Test Requirements7.1 When used for sediment removal, the filtration effi-ciency testing shall be conducted on representative inlet filterdesigns and meet a minimum of 80 % gross removal efficiencywhen tested in accordance
30、with Test Method D7351, with flowdiverted into an area inlet. Alternatively, testing can becompleted on the filtration component of the geosynthetic perTest Method D5141. If desired, obtain representative samplesof the site-specific soil that is significant to the design of theinlet filter on the co
31、nstruction project. If testing is not sitespecific, the general soil type to be used for testing shall beloam with target grain sizes and plasticity index as shown inTable 1, unless otherwise specified.8. Product Marking8.1 The product shall be clearly marked as follows:8.1.1 Manufacturers name or t
32、rademark,8.1.2 Manufacturers product code,8.1.3 Specification designation ASTM X XXXX, and8.1.4 The date of manufacture or an appropriate code.9. Keywords9.1 geosynthetics; geotextiles; inlet filters; storm sewersTABLE 1 Target Grain Sizes and Plasticity IndicesMeasurement RangeD100(mm) D10025D85(mm
33、) 0.5 D855.0D50(mm) 0.001 D501.0D15(mm) 0.005 D15Plasticity Index 1 PI 8D8057 172APPENDIXES(Nonmandatory Information)X1. AUTHORITIESX1.1 Since this product has a wide variety of uses, approvalfor its use rests with various agencies. The design engineer orinstaller (or both) should contact the releva
34、nt authority toobtain local guidelines.X2. MAINTENANCE AND INSPECTIONX2.1 Frequency of InspectionsX2.1.1 Inspection should occur following any rain eventgreater than 0.25 in. in 24 h.X2.2 Maintenance GuidelinesX2.2.1 Empty the sediment bag if more than half filled withsediment and debris, or as dire
35、cted.X2.2.2 Dispose of sediment or debris as directed by theengineer or maintenance contract.X2.2.3 Remove silt from sediment bag and reverse flush thesediment bag.X2.2.4 Replace bag if torn or punctured.ASTM International takes no position respecting the validity of any patent rights asserted in co
36、nnection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the respo
37、nsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful
38、 consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International,
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