1、Designation:C74690(Reapproved 2014)Standard Specification forCorrugated Asbestos-Cement Sheets for Bulkheading1This standard is issued under the fixed designation C746;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the types,physical properties,and dimensions of bulkhead corrugated asbestos-cement sheetsdesigned to
3、provide sheet piling for erosion control alongfresh-water lake shores and inland waterways of fresh or saltwater.1.2 The values stated in SI units are to be regarded asstandard.The values stated in parentheses are provided forinformation only.1.3 WarningBreathing of asbestos dust is hazardous.Asbest
4、os and asbestos products present demonstrated healthrisks for users and for those with whom they come into contact.In addition to other precautions,when working with asbestos-cement products,minimize the dust that results.For informa-tion on the safe use of chrysotile asbestos,refer to“Safe Use ofCh
5、rysotile:A Manual on Preventive and Control Measures.”21.4 The following precautionary caveat pertains only to thetest method portion,Sections 9 12 of this specification.Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the
6、 userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:3C208 Specification for Cellulosic Fiber Insulating BoardC460 Terminology forAsbestos-Cement(Withdrawn 2001)42.2
7、Federal Standard:5Fed.Std.No.123 Marking for Shipment(Civil Agencies)2.3 Military Standard:5MIL-STD-129 Marking for Shipment and Storage2.4 BNQ Standard:6BNQ Standard 3807-098 Vulcanized Rubber-Hardness De-termination3.Terminology3.1 Definitions:3.1.1 flexural strength,nthe transverse breaking load
8、innewtons per meter of width(lbf/ft of width)of saturated sheetswhen loaded on a span of 1.524 m(5 ft)with the load appliedequally and simultaneously at both one-third points of the span.3.1.2 Refer to Terminology C460 for additional terminol-ogy.4.Classification4.1 The corrugated asbestos-cement sh
9、eets covered by thisspecification are classified on the basis of the bending momentcapacity of saturated units.DesignationBending Moment Capacity(Note 1)(Minimum)Type 11270 Nm/m of width(285 lbfft/ft of width)Type 22250 Nm/m of width(505 lbfft/ft of width)Type 33600 Nm/m of width(790 lbfft/ft of wid
10、th)Type 104450 Nm/m of width(1000 lbfft/ft of width)Type 185800 Nm/m of width(1300 lbfft/ft of width)NOTE1The bending moment capacity required for a given installationdepends upon many variables.Its determination is illustrated in the designmanuals of the producing companies.The color coding for the
11、 varioustypes of bulkhead corrugated is painted on one end of the sheet todesignate type:Type 1-brown,Type 2-green,Type 3-red,Type 10-gray,Type 18-yellow.75.Materials and Manufacture5.1 Corrugated asbestos-cement sheets for bulkheadingshall be composed of a combination of asbestos fiber and1This spe
12、cification is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct responsibility of SubcommitteeC17.03 on Asbestos-Cement Sheet Products and Accessories.Current edition approved Dec.1,2014.Published December 2014.Originallypublished in 1973.Last previous
13、 edition approved in 2008 as C746 90(2008).DOI:10.1520/C0746-90R14.2Available from The Asbestos Institute,http:/ 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
14、 Document Summary page onthe ASTM website.4The last approved version of this historical standard is referenced onwww.astm.org.5Available from Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 19111-5094.Attn:NPODS.6Available from Bureau de Normalisation du Qebec.D
15、epartment of Industryand Commerce,50 Saint Joseph Street East,Qebec QC Canada G1K 3A5.7Design Manual for Asbestos-Cement Canal Bulkheads published by theMineral Fiber Products Bureau.Available from the Asbestos Institute,1130Sherbrooke Street W,Suite 410,Montreal,QC Canada H3A 2M8.Copyright ASTM Int
16、ernational,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 portland cement,or portland blast furnace slag cement,and notmore than 1 weight%of organic fiber,with or without theaddition of curing agents,silica,water-repellent substances,mineral fillers,coatings,pigments,or mineral granules,formedunder pressure and cured to meet the physical requirements ofthis specification.6.Physical Properties6.1 StrengthThe corrugated bulkhead product shall con-form to the bendi
