1、Designation:D 5484 99Standard Specification forSteel Grid Bridge Flooring1This standard is issued under the fixed designation D 5484;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 in
2、dicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the requirements for steel gridbridge flooring systems,including design and material speci-fications,coatings,fabrication,and installati
3、on practices.Thisspecification includes open(Type I),concrete filled(Type II),and unfilled composite grid(exodermic)(Type III).2.Referenced Documents2.1 ASTM Standards:A 123/A 123M Specification for Zinc(Hot-Dip Galva-nized)Coatings on Iron and Steel Products2A 366/A 366M Specification for Commercia
4、l Steel(CS)sheet,Carbon(0.15 Maximum Percent)Cold Rolled3A 569/A 569M Specification for Steel,Carbon(0.15 Maxi-mum Percent)Hot-Rolled Sheet,and Strip Commercial3A 615/A 615M Specification for Deformed and PlainBillet-Steel Bars for Concrete Reinforcement4A 709/A 709M Specification for Carbon and Hig
5、h-StrengthLow Alloy Structural Steel Shapes,Plates,and Bars andQuenched-and-Tempered Alloy Structural Steel Plates forBridges4A 780 Practice for Repair of Damaged and Uncoated Areasof Hot-Dip Galvanized Coatings2C 94/C 94M Specification for Ready-Mixed Concrete5D 448 Classification for Sizes of Aggr
6、egate for Road andBridge Construction6D 3963/D 3963M Specification for Fabrication and JobsiteHandling of Epoxy-Coated Steel Reinforcing Bars6D 6275 Practice for Laboratory Testing of Bridge Decks62.2Other Standards:Bridge Grid Flooring Manufacturers Association Designand Specification Data7Exodermi
7、c Bridge Deck Inc Design and SpecificationData8ANSI/AASHTO/AWS Bridge Welding Code AWSD1.59AASHTO Standard Specifications for Highway Bridges103.Classification3.1 Type IOpen Steel Grid SystemConsists of an opensteel grid for carrying vehicular traffic with or without aroughened(serrated)surface.Othe
8、r methods of improving skidresistance may be acceptable,but regardless of the method,itis imperative that a maintainable skid resistant surface befurnished for Type I decks.Design options to obtain acceptablefatigue life of this type of grid must be investigated.3.2 Type IIConcrete Filled System3.2.
9、1 Grade 1Consists of a steel grid that will be filledwith concrete to the full depth of the grid.The concrete may befinished flush with the top of the grid and made ready fortraffic,or an additional thickness of concrete or other wearingsurface may be placed at the option of the designer(see Note1 a
10、nd Note 3).NOTE1If an additional surface course is placed,adequate provisionmust be made to obtain dependable bonding at the top of the filled grid.3.2.2 Grade 2Consists of a steel grid that will be partiallyfilled with concrete by constructing the grid in the fabricationplant with a pan form at som
11、e design depth but never more thanmidpoint from the bottom,except that the grid must be filledfull depth over all supporting floor system flanges(see Note 1,Note 2,and Note 3).NOTE2The use of this system by the designer may be more beneficialthan Grade 1 if dead load is a consideration.NOTE3A minimu
12、m 134-in.overlay on all Type II flooring systems is1This specification is under the jurisdiction of ASTM Committee D-4 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.32 onBridges and Structures.Current edition approved Dec.10,1999.Published February 2000.Originallyp
13、ublished as D 5484 94.Last previous edition D 5484 94(98)e1.2Annual Book of ASTM Standards,Vol 01.06.3Annual Book of ASTM Standards,Vol 01.03.4Annual Book of ASTM Standards,Vol 01.04.5Annual Book of ASTM Standards,Vol 04.02.6Annual Book of ASTM Standards,Vol 04.03.7Available from Bridge Grid Floorin
14、g Manufacturers Association,231 SouthChurch St.,Mt.Pleasant,PA 15666.8Available from Exodermic Bridge Deck Inc.,60 Long Pond Road,Lakeville,CT 06039.9Available from American National Standards Institute,11 West 42nd St.,13thFloor,New York,NY 10036.10Available from theAmericanAssociation of State Hig
15、hway and TransportationOfficials,444 N.Capitol St.,NW,Washington,DC 20001.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.required for dependable bonding(Note 1).In the absence of such overlay,options to obtain acceptable design life must be investigated.3.3 Type
16、IIIUnfilled Composite System(Exodermic)113.3.1 Type A consists of an open steel grid fitted withtertiary bars and studs(for shear connection)composite with areinforced concrete slab.Concrete is kept on top of the grid andexcluded from filling it by placing expanded metal lath or sheetmetal strips between the tertiary bars(or filling the grid withlightweight or removable material)before placing the rein-forced concrete.3.3.2 Type B consists of an open steel grid fabricated to becomposite with a r
