ASTM C478M-2011 Standard Specification for Precast Reinforced Concrete Manhole Sections (Metric)《预制钢筋混凝土人孔部分(公制)的标准规范》.pdf
《ASTM C478M-2011 Standard Specification for Precast Reinforced Concrete Manhole Sections (Metric)《预制钢筋混凝土人孔部分(公制)的标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM C478M-2011 Standard Specification for Precast Reinforced Concrete Manhole Sections (Metric)《预制钢筋混凝土人孔部分(公制)的标准规范》.pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C478M 11Standard Specification forPrecast Reinforced Concrete Manhole Sections (Metric)1This standard is issued under the fixed designation C478M; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisi
2、on. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.PART IGENERAL1. Scope1.1 This specification covers the manuf
3、acture and purchaserequirements of products used for the assembly and construc-tion of circular vertical precast reinforced concrete manholesand structures used in sewer, drainage, and water works.1.2 Part I, Sections 1-11, of this specification presentsgeneral requirements and requirements which ar
4、e common toeach precast concrete product covered by this specification.1.3 Part II of this specification presents specific require-ments for each manhole product in the following sections:Product SectionGrade Rings 12Flat Slab Tops 13Risers and Conical Tops 14Base Sections 15Steps and Ladders 16NOTE
5、 1Future products will be included in Part II in a future revisionof this specification.1.4 This specification is the SI companion to C478.NOTE 2This specification is a manufacturing and purchase specifica-tion only, and does not include requirements for backfill, or the relation-ship between field
6、load conditions and the strength requirements of themanhole products and appurtenances. Experience has shown, however,that the successful performance of this product depends upon the properselection of the product strength, type of foundation and backfill, and carein the field installation of the ma
7、nhole products and connecting pipes. Theowner of the project for which these products are specified herein iscautioned to require inspection at the construction site.2. Referenced Documents2.1 ASTM Standards:2A82/A82M Specification for Steel Wire, Plain, for ConcreteReinforcementA185/A185M Specifica
8、tion for Steel Welded Wire Rein-forcement, Plain, for ConcreteA496/A496M Specification for Steel Wire, Deformed, forConcrete ReinforcementA497/A497M Specification for Steel Welded Wire Rein-forcement, Deformed, for ConcreteA615/A615M Specification for Deformed and PlainCarbon-Steel Bars for Concrete
9、 ReinforcementA706/A706M Specification for Low-Alloy Steel Deformedand Plain Bars for Concrete ReinforcementC33 Specification for Concrete AggregatesC39/C39M Test Method for Compressive Strength of Cy-lindrical Concrete SpecimensC150 Specification for Portland CementC260 Specification for Air-Entrai
10、ning Admixtures for Con-creteC309 Specification for Liquid Membrane-Forming Com-pounds for Curing ConcreteC494/C494M Specification for Chemical Admixtures forConcreteC497 Test Methods for Concrete Pipe, Manhole Sections, orTileC595 Specification for Blended Hydraulic CementsC618 Specification for Co
11、al Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC822 Terminology Relating to Concrete Pipe and RelatedProductsC989 Specification for Slag Cement for Use in Concreteand MortarsC1017/C1017M Specification for Chemical Admixtures forUse in Producing Flowing Concrete1This specification
12、is under the jurisdiction of ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.06 on Manholesand Specials.Current edition approved Nov. 1, 2011. Published November 2011. Originallyapproved in 1980. Last previous edition approved in 2009 as C478M 09. DOI:10.1520/
13、C0478M-11.2For 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.1Copyright ASTM International, 100 Barr Harbor Driv
14、e, PO Box C700, West Conshohocken, PA 19428-2959, United States.2.2 ACI Standard:ACI 318 Building Code, Requirements for Reinforced Con-crete33. Terminology3.1 DefinitionsFor definitions of terms relating to con-crete pipe, see Terminology C822.4. Materials and Manufacture4.1 General material requir
15、ements for precast reinforcedconcrete manhole products are presented in 4.1.1-4.1.8. Othermaterials or additional requirements for a product, if any, arecovered in the Part II section for that specific product.4.1.1 Reinforced ConcreteReinforced concrete shall con-sist of cementitious materials, min
16、eral aggregates, and water, inwhich steel reinforcement has been embedded in such amanner so that the steel reinforcement and concrete acttogether.4.1.2 Cementitious Materials:4.1.2.1 CementCement shall conform to the requirementsfor portland cement of Specification C150, or shall be portlandblast-f
17、urnace slag cement or portland-pozzolan cement con-forming to Specification C595, except that the pozzolanconstituent of the Type IP portland-pozzolan cement shall befly ash.4.1.2.2 Fly AshFly ash shall conform to the requirementsof Class F or Class C of Specification C618.4.1.2.3 Ground Granulated
18、Blast-Furnace Slag (GGBFS)GGBFS shall conform to the requirements of Grade 100 or 120of Specification C989.4.1.3 Allowable Combinations of Cementitious MaterialsThe combination of cementitious materials used in the concreteshall be one of the following:4.1.3.1 Portland cement only,4.1.3.2 Portland b
19、last-furnace slag cement only,4.1.3.3 Slag modified Portland cement only,4.1.3.4 Portland pozzolan cement only,4.1.3.5 A combination of Portland cement and groundgranulated blast-furnace slag,4.1.3.6 A combination of Portland cement and fly ash, or4.1.3.7 A combination of Portland cement, ground gra
20、nu-lated blast-furnace slag (not to exceed 25 % of the totalcementitious weight) and fly ash (not to exceed 25 % of thetotal cementitious weight).4.1.4 AggregatesAggregates shall conform to Specifica-tion C33, except that the requirements for gradation shall notapply.4.1.5 Admixtures and BlendsThe f
21、ollowing admixturesand blends are allowable:4.1.5.1 Air-entraining admixture conforming to Specifica-tion C260;4.1.5.2 Chemical admixture conforming to SpecificationC494/C494M;4.1.5.3 Chemical admixture for use in producing flowingconcrete conforming to Specification C1017/C1017M;4.1.5.4 Chemical ad
22、mixture or blend approved by theowner.4.1.6 Steel ReinforcementReinforcement shall consist ofwire conforming to Specification A82/A82M or SpecificationA496/A496M, of wire fabric conforming to SpecificationA185/A185M or Specification A497/A497M, or of bars ofGrade 40 steel conforming to Specification
23、 A615/A615M or ofbars conforming to Specification A706/A706M.4.1.7 Secondary Synthetic FiberCollated fibrillated poly-propylene virgin fibers shall not be prohibited when used insteel reinforced concrete manholes as a non-structural manu-facturing enhancement. Only fibers designed and manufacturedsp
24、ecifically for use in concrete and so certified by the manu-facturer shall be accepted.4.1.8 Other MaterialsOther materials required for a prod-uct and not covered in Section 4 will be covered in the Part IIsection for that specific product.5. Design5.1 Design requirements for a product are prescrib
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