1、Designation: C 1089 06Standard Specification forSpun Cast Prestressed Concrete Poles1This standard is issued under the fixed designation C 1089; 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
2、 parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers spun cast prestressed concretepoles
3、for use as structural supports for streetlights; trafficsignals; and transmission, distribution, and communicationlines.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.2. Referenced Documents2.1 ASTM Standards:2A 82
4、/A 82M Specification for Steel Wire, Plain, for Con-crete ReinforcementA 416/A 416M Specification for Steel Strand, UncoatedSeven-Wire for Prestressed ConcreteA 421/A 421M Specification for Uncoated Stress-RelievedSteel Wire for Prestressed ConcreteA 496/A 496M Specification for Steel Wire, Deformed
5、, forConcrete ReinforcementA 615/A 615M Specification for Deformed and PlainCarbon-Steel Bars for Concrete ReinforcementA 617/A 617M Specification for Axle-Steel Deformed andPlain Billet-Steel Bars for Concrete Reinforcement3A 641/A 641M Specification for ZincCoated (Galvanized)Carbon Steel WireA 72
6、2/A 722M Specification for Uncoated High-StrengthSteel Bars for Prestressing ConcreteC 31/C 31M Practice for Making and Curing Concrete TestSpecimens in the FieldC33 Specification for Concrete AggregatesC 39/C 39M Test Method for Compressive Strength of Cy-lindrical Concrete SpecimensC 42/C 42M Test
7、 Method for Obtaining and Testing DrilledCores and Sawed Beams of ConcreteC 150 Specification for Portland CementC 172 Practice for Sampling Freshly Mixed ConcreteC 260 Specification forAir-EntrainingAdmixtures for Con-creteC 330 Specification for Lightweight Aggregates for Struc-tural ConcreteC 494
8、/C 494M Specification for Chemical Admixtures forConcreteC 595 Specification for Blended Hydraulic CementsC 618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in Concrete2.2 AASHTO Standard:Specifications for Structural Supports for Highway Signs,Luminaires and Traffic Si
9、gnals (LTS-2)42.3 ANSI Standard:National Electrical Safety Code52.4 PCI Guides:Guide for Design of Prestressed Concrete Poles6Guide Specification for Prestressed Concrete Poles63. Terminology3.1 Definitions:3.1.1 cracking loada load which creates a bending mo-ment of enough magnitude to produce a te
10、nsile stress greaterthan the sum of induced compression plus the tensile strengthof the concrete resulting in tensile cracks on the tension face ofthe pole.3.1.2 spun polea pole in which the concrete is distributedand compacted through centrifugal force.3.1.3 ultimate loadmaximum load the pole will
11、carry inthe specified direction, before the concrete or steel will reachits limiting state.4. Basis of Acceptance4.1 The acceptability of the poles shall be determined by theresults of full-scale bending and torsional tests. Poles shall be1This specification is under the jurisdiction ofASTM Committe
12、e C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.20 onArchitectural and Structural Products.Current edition approved June 1, 2006. Published June 2006. Originallyapproved in 1988. Discontinued in March 2006 and reinstated as C 1089 06.2For referenced ASTM standa
13、rds, 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.3Withdrawn.4Available from American Association of State Highway and TransportationOffic
14、ials, 444 N. Capitol Street, NW, Washington, DC 20001.5Available from American National Standards Institute, 25 W. 43rd St., 4thFloor, New York, NY 10036.6Available from Prestressed Concrete Institute, 209 West Jackson Blvd.,Chicago, IL 60606.1Copyright ASTM International, 100 Barr Harbor Drive, PO
15、Box C700, West Conshohocken, PA 19428-2959, United States.accepted on the basis of producer certification and historicaltest data of full-scale bending and torsional tests on equal orlarger poles. The purchaser shall specify the number andfrequency of full-scale tests. Poles failing to meet the stre
16、ngthrequirements specified by the purchaser or the tolerancesspecified herein shall be rejected.5. Materials5.1 CementPortland cement shall conform to the require-ments of Specification C 150 or shall be portland blast-furnaceslag cement or portland-pozzolan cement conforming to therequirements of S
17、pecification C 595.5.2 AggregateAggregates shall conform to SpecificationC33except that the requirements for grading shall not apply.If a producer can demonstrate that aggregates conforming toSpecification C 330 could be used to manufacture an accept-able product, those aggregates may be used.5.3 Wa
18、terWater used for mixing concrete shall be free ofoils, organic matter, and other substances in amounts that maybe deleterious to concrete, and it shall not contain concentra-tion of chloride ions in excess of 500 ppm or sulfate ions inexcess of 1000 ppm.5.4 AdmixtureChemical admixtures shall confor
19、m toSpecification C 494. Air-entraining admixtures shall conformto Specification C 260. Fly ash or other pozzolanic admixturesshall conform to the requirements of Specification C 618.Admixtures shall not cause the chloride ion content of theconcrete to exceed 0.06 % by mass of cement.5.5 SteelPrestr
20、essing steel shall conform to SpecificationsA 416/A 416M, A421, or A722/A 722M. Non-tensioned lon-gitudinal reinforcement shall conform to Specifications A 615/A 615M, A617/A 617M, or A496. Circumferential wire rein-forcement shall conform to Specification A 82, A 496, orA 641. Base plates, anchor b
21、olts and top mount couplings shallconform to the ASTM specifications designated on contractdrawings.5.6 All inserts shall be corrosion resistant and used accord-ing to the manufacturers specifications. No aluminum insertsshall be allowed.6. Requirements Requirements6.1 General Requirements:6.1.1 Con
22、crete Cover The minimum concrete cover overall reinforcing steel shall be34 in. (19 mm) unless specifiedotherwise by purchaser. For street lighting poles, cover can bereduced to12 in. (13 mm).6.1.2 Circumferential WireCircumferential wire spacingshall be a maximum of 4 in. (102 mm), except at the en
23、ds(measured from either the top or bottom to a distance of 1 ft(305 mm) where the maximum spacing will be 1 in. (25 mm).6.1.3 GroundingThe purchaser shall specify any ground-ing requirements needed.6.1.4 Exterior Surface TreatmentExterior concrete sur-face finish shall be as specified by the purchas
24、er.6.1.5 Prestressing Initial prestress shall not be applieduntil the concrete strength has reached the greater of 3500 psi(24 MPa) or 1.67 times the maximum expected stress in theconcrete due to the prestressing forces immediately aftertransfer and before losses occur.6.1.6 The minimum 28-day compr
25、essive strength for con-crete used in poles shall be 7000 psi (48 MPa) as determinedusing Test Methods C 39 or C 42. For street lighting poles, thecompressive strength may be reduced to a minimum of 5000psi (35 MPa). The cylinders for compression tests shall bemade in accordance with Practices C 31
26、and C 172.6.2 Load Requirements:6.2.1 Poles shall be designed to withstand ultimate load.Ultimate capacity of the pole shall be determined in accordancewith the PCI Guide for design (2.4). Where local codes sorequire, seismic loads shall be considered in the design ofpoles. Poles shall be proportion
27、ed so that stresses produced bythe manufacturing process, transportation, and installation, aswell as dead and live loads, will not be detrimental to thestrength, serviceability requirements, and aesthetics of thestructure. Under corrosive environments or strain pole appli-cations or both, poles sha
28、ll be designed so that the crackingcapacity exceeds the unfactored loads based on a 10-yearminimum return period.6.2.2 Unless local codes or agency standards require other-wise, the following loading criteria shall apply:6.2.2.1 AASHTO loading criteria shall apply for streetlights and traffic signal
29、s.6.2.2.2 ANSI National Electric Safety Code loading criteria(2.3) shall apply for transmission, distribution, and communi-cation lines. The purchaser will specify the load trees requiredfor design. If deflection is critical, the purchaser shall specifymaximum allowable deflection.7. Load Test Proce
30、dures7.1 The poles shall be tested in either a horizontal or verticalposition.7.2 The number, location, direction, holding time, sequence,and increments of the test loads, and the number, location, anddirection of deflection reading shall be approved by thepurchaser.7.3 The method of attaching the t
31、est loads to producebending and torsional stresses, applying the test loads, andmeasuring and recording the test loads and deflections shall beapproved by the purchaser before testing begins.7.4 The producer shall furnish the purchaser copies of thetest report. This report shall include all recorded
32、 test data aswell as drawings describing the test.8. Tolerances8.1 The following tolerances are based on experience withthe spun pole manufacturing process:8.1.1 Lengthshall vary by no more than 2 in. (50 mm) or1 in. (25 mm) plus14 in. (6 mm) per 10 ft (3 m), whichever isgreater.8.1.2 Cross Section:
33、8.1.2.1 Outside Diameter shall vary by no more than14in. (6 mm).8.1.2.2 Wall Thickness shall be no less than 88 % of thedesign thickness or no more than14 in. (6 mm) less than thedesign thickness, whichever is greater.8.1.3 Deviation from Longitudinal Axis (Sweep)shall varyno more than14 in. (6 mm)
34、per 10 ft (3 m) of length, applicablefor the entire length or any segment thereof.C10890628.1.4 End Squareness shall vary no more than12 in. (13mm) per 1 ft (305 mm) of diameter.8.1.5 Massshall vary no more than 10 % of the designmass.8.1.6 Reinforcement Placement:8.1.6.1 Longitudinal Reinforcements
35、hall vary no morethan14 in. (6 mm) for individual elements and no more than18in. (3 mm) for the centroid of a group.8.1.6.2 Spiral Reinforcementshall be within 6112 in. (38mm) of its specified location, except at the ends (measuredfrom either top or bottom to a distance of 1 ft (305 mm) wherethe spa
36、cing location shall be within 614 in. (6 mm). Thenumber of spirals of cold-drawn circumferential wire along any5 ft (1.5 m) of length shall not be less than required by design.8.1.7 Bolt Holes:8.1.7.1 Bolt Hole Diametershall vary no more than116 in.(1.5 mm).8.1.7.2 Bolt Hole/Insert Spacingshall vary
37、 no more than18 in. (3 mm) for holes within a group and no more than 1 in.(25 mm) for the centerline of the group.8.1.8 Aperture and Blockout Placementshall vary nomore than 2 in. (50 mm) from the designated location.9. Detail Drawings9.1 The producer shall furnish the purchaser sets of fabri-cation
38、 and detail drawings that shall include the followinginformation:9.1.1 Dimension and length,9.1.2 Description and location of the steel reinforcement,9.1.3 Twenty-eight-day strength of the concrete and deten-sioning strength,9.1.4 All the necessary stressing information,9.1.5 Size, description, quan
39、tity, and location of all hard-ware that is a part of the pole.9.1.6 Cracking and ultimate moment at the ground line orthe most critical section along the pole length,9.1.7 Marking of the poles as specified, and9.1.8 Any other special information required by the pur-chaser.10. Inspection10.1 The qua
40、lity of materials, the process of manufacture,and the finished poles shall be subject to inspection andapproval by the purchaser. The producer shall afford thepurchaser reasonable access for making the necessary checksof the production facilities and any required tests. All tests andinspection are t
41、o be conducted so as not to interfere unneces-sarily with the manufacture and delivery of the pole.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 deter
42、mination 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
43、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 consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that
44、 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, 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).C1089063
