1、Designation:C1814/C1814M16Standard Test Method forMeasurement of Hydraulic Characteristics of StormwaterFiltration Elements1This standard is issued under the fixed designation C1814/C1814M;the number immediately following the designation indicates theyear of original adoption or,in the case of revis
2、ion,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test standard shall be used to determine thehydraulic characteristics of stormwater filtration element
3、s.1.2 Elements tested shall be of a size commonlymanufactured,not a scale model.1.3 The position and orientation of all filter elements duringtesting shall be identical to the position and orientation usedduring normal operation.1.4 The direction of flow during testing shall be identical tothe direc
4、tion of flow during normal operation.1.5 As each stormwater treatment device is unique in designand hydraulic capacity,a sufficient number of accuratelymeasured data points are needed to properly define the hydrau-lic characteristics of each test element.Therefore,it is impera-tive that the element
5、setup and subsequent testing methodolo-gies be well defined and executed to assure accurate flow andelevation data.1.6 This test determines the hydraulic capacity of stormwa-ter filtration systems.Test results are not an indicator of thefiltration performance with respect to the capture of solids or
6、other materials.1.7 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard.Thevalues stated in each system may not be exact equivalents;therefore,each system shall be used independently of the other.Combining values from the two systems may result in
7、noncon-formance with the standard.1.8 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 limitatio
8、ns prior to use.2.Referenced Documents2.1 ASTM Standards:2D3858 Test Method for Open-Channel Flow Measurementof Water by Velocity-Area MethodD4409 Test Method for Velocity Measurements of Water inOpen Channels with Rotating Element Current MetersD5089 Test Method for Velocity Measurements of Water i
9、nOpen Channels with Electromagnetic Current MetersD5242 Test Method for Open-Channel Flow Measurementof Water with Thin-Plate WeirsD5389 Test Method for Open-Channel Flow Measurementby Acoustic Velocity Meter SystemsD5413 Test Methods for Measurement of Water Levels inOpen-Water BodiesD5460 Test Met
10、hod for Rubber Compounding MaterialsWater in Rubber Additives2.2 ASME Standard:MFC-3M Measurement of Fluid Flow in Pipes UsingOrifice,Nozzle,and Venturi33.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 elementthe smallest filter unit that is commerciallyavailable or a combinatio
11、n thereof,or a full commerciallyavailable filter system comprised of one or more internal filterunits.4.Summary of Test Method4.1 This test method describes procedures and equipmentrequired to measure the hydraulic characteristics of filtrationelements(as defined in 3.1).4.2 Other standards that may
12、 be useful to reference include:Test Methods D3858,D4409,D5089,D5242,D5389,D5413,Guide D5460,and ASME MFC-3M(see Section 2).1This test method is under the jurisdiction of ASTM Committee C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.70 onPrecast Concrete Product
13、s for Stormwater Management.Current edition approved April 1,2016.Published April 2016.DOI:10.1520/C1814_C1814M-162For 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 sta
14、ndards Document Summary page onthe ASTM website.3Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Two Park Ave.,New York,NY 10016-5990,http:/www.asme.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United
15、States1 5.Significance and Use5.1 Each element has unique flow patterns and each elementhas unique hydraulic characteristics(that is,flow and headloss).In addition,each element may exhibit variable hydrauliccapacity as the element filters become occluded,the filtermedia swells or shrinks,and water v
16、iscosity(that is,watertemperature)changes.In some cases filters experience hyster-esis with respect to filling and emptying.The testing procedurein Section 7 will help develop the parameters necessary todetermine the hydraulic capacity of an element at one instancein time.The test can be repeated at desired time increments todetermine how the hydraulic capacity varies over time.6.Apparatus6.1 The test element shall be set up in the same configura-tion as a commercially available element.Pipe typ
