1、Designation:F 840 83(Reapproved 2003)An American National StandardStandard Specification forLadders,Fixed,Vertical,Steel,Ships1This standard is issued under the fixed designation F 840;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,
2、the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers fabrication details for fixed,vertical,steel ladders for personnel access on ships.1
3、.2 Nonferrous ladders and special-purpose ladders areexcluded from this specification.1.3 The values stated in inch-pound units are to be regardedas the standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user
4、 of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A 36/A36M Specification for Carbon Structural Steel2.2American Bureau of Shipping,Rules for Building andClassing S
5、teel Vessels:3Section 43.3 Ordinary Strength Hull Structural SteelSection 30 Welding2.3American Welding Society Standard:4AWS D 1.1Structural Welding Code2.4Federal Standard:5TT-P-645 Primer,Paint,Zinc Chromate,Alkyd Type3.Definition of Terms Specific to This Standard3.1 fixed laddera ladder permane
6、ntly attached by weldingor bolting to ships structure or equipment.3.2 pitchthe included angle between the horizontal andthe ladder,measured on the opposite of the ladder from theclimbing side.3.3 vertical laddera ladder which has an installed pitchrange from 75 to 90(vertical).4.Classification4.1 L
7、adders are furnished in three types as follows:4.1.1 Type INormal duty(Fig.1).4.1.2 Type IIPunched stringers(Fig.2)as an alternate toType I.4.1.3 Type IIIHeavy duty(Fig.3).This type may bespecified in cargo holds where the cargo or equipment orvehicles used to handle cargo could be expected to damag
8、e aType I or Type II ladder.5.Ordering Information5.1 Orders for material under this specification shall includethe following:5.1.1 Quantity,5.1.2 Type(4.1),and applicable detail in Fig.2,5.1.3 Material(6.1),5.1.4 Finish(8.2),5.1.5 Dimensions a and b and L(Fig.1,Fig.2,or Fig.3),5.1.6 Number of rungs
9、,5.1.7 Welding specification(6.2),5.1.8 Marking(Section 10),and5.1.9 ASTM designation and date of issue.6.Materials and Manufacture6.1 Unless otherwise specified in ordering documents,steelshall conform to the requirements of Specification A 36/A 36M,ABS Section 43.3,or equal.6.2 Unless otherwise sp
10、ecified in ordering documents,welding shall conform to AWS D 1.1 or ABS Section 30.7.Dimensions7.1 The dimensions shall be in accordance with Figs.1-3.7.2 Dimensions are given in inches with metric conversionin parentheses.8.Workmanship,Finish,and Appearance8.1 Ladders shall be free of splinters,sha
11、rp edges,burrs,andweld spatters.8.2 FinishUnless otherwise specified in ordering docu-ments,ladders shall,after fabrication,be sand or shot blasted toremove rust and scale and given a complete coat of zincchromate primer,Federal Specification TT-P-645.1This specification is under the jurisdiction of
12、 ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.03 onOutfitting and Deck Machinery.Current edition approved Dec.1,2003.Published January 2004.Originallyapproved in 1983.Last previous edition approved in 1998 as F 840 83(1998).2For referenced AST
13、M 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.3Available from American Bureau of Shipping(ABS),ABS Plaza,16855Northchase Dr.,Housto
14、n,TX 77060.4Available from The American Welding Society(AWS),550 NW LeJeune Rd.,Miami,FL 33126.5Available from General Services Administration,Specifications DistributionBranch,Bldg.197,Washington Navy Yard,Washington,DC 20407.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Cons
15、hohocken,PA 19428-2959,United States.9.Inspection9.1 Unless otherwise specified in ordering documents,allladders shall be visually inspected for workmanship,finish,andappearance as defined in Section 8.10.Marking10.1 Unless otherwise specified in ordering documents,each ladder shall be marked with p
16、urchase-order number,itemnumber(from purchase order),ASTM designation number,andmanufacturers name.Marking may be by steel stamp,paintstencil,or weatherproof tag.11.Keywords11.1 fixed ladders;ladders;marine;ship;steel ladders;vertical laddersFIG.1 Vertical Ladder Type I(Normal Duty)F 840 83(2003)2FIG.2 Vertical Ladder Type II(Punched Stringers)as an Alternative to Type IF 840 83(2003)3ASTM International takes no position respecting the validity of any patent rights asserted in connection with an
