1、Designation: D8107 17D8107 18Standard Practice forDetermining Sediment Pond Skimmer Flow Rate1This standard is issued under the fixed designation D8107; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A n
2、umber in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 This practice covers the setting up and running of a test to determine the clear water flow rate at various depths of a floatings
3、ediment pond skimmer.1.2 This practice is limited to large-scale test conditions, and does not address hydraulic modeling or pipe-flow basedcalculations.1.3 The values stated in SI units are to be regarded as the standard.1.4 All observed and calculated values shall conform to the guidelines for sig
4、nificant digits and rounding established in PracticeD6026, unless superseded by this standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health
5、, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of Internat
6、ional Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil, Rock, and Contained FluidsD3740 Practice for Minimum Requirements for Agencies Engaged in Testin
7、g and/or Inspection of Soil and Rock as Used inEngineering Design and ConstructionD6026 Practice for Using Significant Digits in Geotechnical Data3. Terminology3.1 DefinitionsFor definitions of other terms used in this practice, refer to Terminology D653.3.2 Definitions of Terms Specific to This Sta
8、ndard:3.2.1 floating sediment pond skimmer, na buoyant device that releases/drains water from the surface of sediment ponds, trapsor basins at a controlled rate of flow.4. Summary of Practice4.1 This practice is for evaluating the clear water flow rate of a floating sediment pond skimmer versus pond
9、 depth, includingdetails for setting up a performance test that can be used for design characterization as well as quality assurance to determineproduct conformance to project specifications.5. Significance and Use5.1 This practice covers the guidelines, requirements and procedures for evaluating th
10、e flow rate of a floating sediment pondskimmer versus pond depth. This practice refers to large-scale testing procedures, and is patterned after conditions typically found1 This test method is under the jurisdiction of ASTM Committee D18 on Soil and Rock and is the direct responsibility of Subcommit
11、tee D18.25 on Erosion and SedimentControl Technology.Current edition approved Feb. 1, 2017Jan. 1, 2018. Published February 2017February 2018. DOI: 10.1520/D8107-17Originally approved in 2017. Last previous editionapproved in 2017 as D2517 17. DOI: 10.1520/D8107-182 For referencedASTM standards, visi
12、t theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standar
13、d an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM i
14、s to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1on construction sites within a sediment basin. This practice outlines test prepa
15、ration, test execution, data collection, data analysisand reporting procedures for any size calibrated basin.6. Apparatus6.1 Apparatus/Facility:6.1.1 Testing is performed in a calibrated basin (that is, it has a known surface area at any known depth) of sufficient size tofacilitate multiple, accurat
16、e depth readings under the expected flow rates, but not less than 0.9 m deep 1.2 m wide 6.1 m long.A typical basin is shown in Fig. 16.1.2 The basin shall be outfitted with a skimmer discharge pipe having a diameter no smaller than that of the pipe joining itto the floating skimmer head. The dischar
17、ge pipe shall have a valve or stopper that can be controlled or removed/replaced fromthe outside of the basin to initiate and stop flow through the skimmer. It is also recommended to also have a valved drainage pipeto enable lowering of the water surface within the basin if desired to take flow rate
18、 measurements at various depths without waitingfor discharge exclusively through the skimmer.6.1.3 A water supply connected to the basin either via a gravity flow system or a pump and associated piping is needed to fillthe calibrated basin. A depth measuring system, such as a calibrated ruler mounte
19、d on the side of the basin shall be provide forthe measurement of water depth during the test. test to the nearest 1 mm. The depth measuring system must not be moved,repositioned, jarred, and tampered with once the first reading of each replicate has been taken. The depth measuring system maybe pair
20、ed with volume calculations or an automated flow gauge.6.2 Test Set-Up:6.2.1 The skimmer is attached to the discharge pipe prior to pond filling using reducers/connectors as directed by the client. Theconnection must be watertight so that all discharge is through the floating skimmer headworks/inlet
21、. (See Fig. 2.)6.3 Pre-Test DocumentationMaintain a test folder for each test, including the following information:6.3.1 Calibrated basin dimensions and pictures of the test setup.6.3.2 Product manufacturer; product name; description; specifications; size; and a picture of the material, if practical
22、.6.3.3 Technician identification and date/time of testing.6.4 Test Operation and Data Collection:6.4.1 With the valve on the discharge pipe closed, and the skimmer to be tested in place, fill the test basin with water to themaximum desired depth. Filling should proceed slowly enough to allow all air
23、 within the skimmer assembly to bleed completelyduring filling.6.4.2 Once the basin is filled to the desired depth, allow the water surface to become still and record the depth on the rulermounted to the sidewall.sidewall and the temperature of the water.6.4.3 Open the discharge pipe valve and start
24、 timing when water begins exiting the discharge pipe.6.4.4 Record depth and associated time at least every minute until the flow stops or the skimmer is resting on the bottom of thebasin. stops.6.4.5 Record and tabulate water surface elevation as a function of time.6.4.6 From the change in surface e
25、levation with time, calculate flow rate between each data point in accordance with Eq 1.Depth1 2 Depth2!*Basin Area /Time2 2 Time1! (1)FIG. 1 Typical Testing Basin (in background)D8107 1826.4.7 Repeat the test two more times on each skimmer style (size).6.4.8 Plot flow rate versus depth and fit a tr
26、endline to the data to establish the flow rate versus depth relationship for the testeddevice.7. Report7.1 Report at a minimum the following information:7.1.1 General information, including test facility location, date, time and operator(s),7.1.2 Test basin configuration and preparation,7.1.3 Calibr
27、ation data,7.1.4 Materials documentation including skimmer material and installation description,7.1.5 Test operation, data collected, and data analysis.8. Precision and Bias8.1 No statement is made about either the precision or bias of this practice.9. Keywords9.1 floating pond skimmer; sediment po
28、nd outletSUMMARY OF CHANGESCommittee D18 has identified the location of selected changes to this standard since the last issue (D810717)that may impact the use of this standard. (January 1, 2018)(1) Added measuring accuracy to 6.1.3.(2) Added requirement to record water temperature to 6.4.2.(3) Clar
29、ified that measurements continue until flow stops in 6.4.4.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such pat
30、ent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.Your comments are invited eith
31、er for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair h
32、earing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standa
33、rd may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 2 Schematic of SetupD8107 183
