ASTM D6765-2002(2008) 895 Standard Practice for Live Staking《现场打桩的标准方法》.pdf

1、Designation: D 6765 02 (Reapproved 2008)Standard Practice forLive Staking1This standard is issued under the fixed designation D 6765; 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 parenthese

2、s indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers the material, preparation and instal-lation work required for live stake construction.1.2 The values in this standard are in SI units

3、and are to beregarded as the standard. The inch-pound units given inparentheses are for information only.1.3 This practice offers a set of instructions for performingone or more specific operations. This document cannot replaceeducation or experience and should be used in conjunctionwith professiona

4、l judgment. Not all aspects of this practice maybe applicable in all circumstances. This ASTM standard is notintended to represent or replace standard of care by whichadequacy of a given professional service must be judged, norshould this document be applied without considerations of aprojects many

5、unique aspects. The word “standard” in thetitle of this document means only that the document has beenapproved through the ASTM consensus process.1.4 This standard may involve hazardous materials, opera-tions, and equipment. This standard does not purport toaddress all of the safety concerns, if any

6、, associated with itsuse. It is the responsibility of the user of this standard toestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2. Terminology2.1 Definitions:2.1.1 live stake, nan individual live woody plant materialcutting

7、used in live staking.2.1.2 live staking, vthe act of tamping live woody plantmaterial cuttings into the ground.2.1.3 live woody plant material, nstem and branch cut-tings of vegetatively self-propagating woody plant species.3. Summary of Practice3.1 Live stakes are stem or branch cuttings of vegetat

8、ivelyself-propagating woody plant species that are tamped into theground. If correctly prepared and installed, the live stake willroot and grow. Once the live stakes become established, theycreate top growth and a living root system. The root systemstabilizes the shallow subsoil by reinforcing and b

9、indingtogether soil particles, and by extracting excess soil moisture.The vegetative top growth from the living live stakes providescover for the soil surface against erosive forces. See Fig. 1, Fig.2, and Fig. 3.4. Significance and Use4.1 Live staking is a soil bioengineering technique used toprovi

10、de erosion and sedimentation control after plants havebecome fully established by increasing infiltration, slowing orredirecting runoff, and trapping seed and sediments. A success-ful live staking application provides mechanical surface slopestabilization, aesthetics, water quality and habitat enhan

11、ce-ment. The ability of live staking to function properly dependson the quality and correctness of the materials utilized, themeans and methods of installation, and proper consideration ofsite characteristics. It is imperative that the live stakingdevelops root and top growth.5. Materials5.1 Fresh o

12、r well-preserved viable cuttings are used. Thestems or branches are straight. Side branches are cleanlyremoved. Bark remains intact. The basal ends are cut at anangle for easy insertion into the soil. The top is cut square.Typically, plants are harvested near the project site within thesame climate

13、zone. Typical lengths for live stakes are from 600to 900 mm (2 to 3 ft). The caliper (diameter) of cuttingsgenerally ranges from 15 to 40 mm (12 to 112 in.). Cut andinstall the live stakes in the dormant season.5.2 Brush Cutting ImplementsCut live vegetation withsuch tools as pruning shears, loppers

14、, clearing saws, chainsaws,and bush axes. The cuts must be made in a manner that allowsthe bark to remain intact and the stems or branches are not splitor shredded.6. Installation6.1 Harvest live woody plant material using a sharp, cleanbrush-cutting implement. The cuttings may be temporarilystored

15、outdoors in water or in a moist environment for amaximum of 2 days when the outdoor temperature remainsbelow 10C (50F), or refrigerated storage at 1 to 3C (33 to1This practice is under the jurisdiction of ASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.25 on E

16、rosion andSediment Control Technology.Current edition approved June 1, 2008. Published July 2008. Originally approvedin 2002. Last previous edition approved in 2002 as D 6765 02.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.39F) ca

17、n be used for up to two (2) months, provided humiditylevels are maintained above 90 %.6.2 Tamp each live stake into the ground perpendicular tothe soil surface with the buds oriented up. An iron bar orsimilar device can be used to make a pilot hole in firm soil. Theoutside diameter of the iron bar m

18、ay be no larger than thesmallest live stake. Buds are oriented up.6.3 Tamp live stake into the ground with a dead blowhammer until four-fifths of the live stake is buried.6.4 Firmly pack soil around the live stake after it has beentamped into the ground.6.5 Live stakes that split or are otherwise da

19、maged duringinstallation are removed and replaced.6.6 The spacing and density of live stakes depend uponspecies selection and site conditions. Live stakes are com-monly installed 600 to 900 mm (2 to 3 ft) on center using atriangular layout. The density of this configuration will rangefrom 2 to 4 liv

20、e stakes per square meter.FIG. 1 Individual Live Stake Prior to InstallationFIG. 2 Cross-Section of Live Stakes (Installed)FIG. 3 Photograph of Growing Live StakesD 6765 02 (2008)26.7 Live staking is frequently used in association with rollederosion control products, riprap, or other technologies.7.

21、 Keywords7.1 erosion control; live stake; live staking; slope stabiliza-tion; soil bioengineeringASTM 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 determi

22、nation 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 responsible technical committee and must be reviewed every five years andif not revised, either reapproved or wi

23、thdrawn. 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 consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that y

24、our 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, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard 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).D 6765 02 (2008)3