ASTM_C_1804_-_14e1.pdf

Designation:C1804141Standard Specification forSpun Cast Prestressed Concrete Bases for Tapered SteelLighting Poles1This standard is issued under the fixed designation C1804;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 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEEditorial changes were made throughout in April 2015.1.Scope1.1 This specification covers spun cast prestressed concretebases used in lighting structures.1.2 UnitsThe values stated in SI units are to be regardedas standard.2.Referenced Documents2.1 ASTM Standards:2A416/A416M Specification for Steel Strand,UncoatedSeven-Wire for Prestressed ConcreteA421/A421M Specification for Uncoated Stress-RelievedSteel Wire for Prestressed ConcreteA496/A496M Specification for Steel Wire,Deformed,forConcrete Reinforcement(Withdrawn 2013)3A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete ReinforcementA617/A617M Specification for Axle-Steel Deformed andPlain Bars for Concrete Reinforcement(Withdrawn1999)3A641/A641M Specification for ZincCoated(Galvanized)Carbon Steel WireA722/A722M Specification for Uncoated High-StrengthSteel Bars for Prestressing ConcreteA1064/A1064M Specification for Carbon-Steel Wire andWelded Wire Reinforcement,Plain and Deformed,forConcreteB86 Specification for Zinc and Zinc-Aluminum(ZA)AlloyFoundry and Die CastingsC31/C31M Practice for Making and Curing Concrete TestSpecimens in the FieldC33/C33M Specification for Concrete AggregatesC39/C39M Test Method for Compressive Strength of Cylin-drical Concrete SpecimensC42/C42M Test Method for Obtaining and Testing DrilledCores and Sawed Beams of ConcreteC150/C150M Specification for Portland CementC172/C172M Practice for Sampling Freshly Mixed Con-creteC260/C260M Specification for Air-Entraining Admixturesfor ConcreteC330/C330M Specification for Lightweight Aggregates forStructural ConcreteC494/C494M Specification for Chemical Admixtures forConcreteC595/C595M Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC989/C989M Specification for Slag Cement for Use inConcrete and MortarsC1157/C1157M Performance Specification for HydraulicCementC1240 Specification for Silica Fume Used in CementitiousMixturesF593 Specification for Stainless Steel Bolts,Hex CapScrews,and Studs2.2 AASHTO Standard:Specification for Structural Supports for Highway Signs,Luminaries and Traffic Signals(LTS-6)42.3 ACI Standard:5ACI 301 Specifications for Structural Concrete2.4 ASCE7 Standard:6Minimum Design Loads for Buildings and Other Structures1This test method is under the jurisdiction of ASTM Committee C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.20 onArchitectural and Structural Products.Current edition approved Nov.1,2014.Published November 2014.DOI:10.1520/C1804-14.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American Association of State Highway and TransportationOfficials(AASHTO),444 N.Capitol St.,NW,Suite 249,Washington,DC 20001,http:/www.transportation.org.5Available from American Concrete Institute(ACI),P.O.Box 9094,FarmingtonHills,MI 48333-9094,http:/www.concrete.org.6Available from American Society of Civil Engineers(ASCE),1801 AlexanderBell Dr.,Reston,VA 20191,http:/www.asce.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.5 PCI Guides:Guide for Design of Prestressed Concrete PolesGuide Specification for Prestressed Concrete Poles3.Terminology3.1 Definitions:3.1.1 cracking loada load which creates a bending mo-ment of enough magnitude to produce a tensile stress greaterthan the sum of induced compression plus the tensile strengthof the concrete resulting in tensile cracks on the tension face ofthe base.3.1.2 cylindrical sectionlower portion of base designed tobe buried in concrete backfill below ground line.3.1.3 spun basea base in which the concrete is distributedand compacted through centrifugal force.3.1.4 tapered sectionupper portion of base,which has ataper designed to match overlapping steel pole taper.3.1.5 ultimate loadmaximum load the base will carry inthe specified direction,before the concrete or steel will reachits limiting state.4.Basis of Acceptance4.1 Acceptability of spun prestressed concrete bases pro-duced in accordance with this specification shall be determinedby the test results of compressive strength tests of concretecylinders and mill certificates for the reinforcing steel.Themanufacturer sha