1、Designation: B746/B746M 16Standard Specification forCorrugated Aluminum Alloy Structural Plate for Field-BoltedPipe, Pipe-Arches, and Arches1This standard is issued under the fixed designation B746/B746M; the number immediately following the designation indicates the yearof original adoption or, in
2、the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.
3、1 This specification covers corrugated aluminum alloystructural plate used in the construction of pipe, pipe-arches,arches, underpasses, box culverts, and special shapes for fieldassembly. Appropriate fasteners are also described. The pipe,arches, and other shapes are generally used for drainagepurp
4、oses, pedestrian and vehicular underpasses, and utilitytunnels. Aluminum box culvert shapes are covered in Specifi-cation B864/B864M.1.2 This specification does not include requirements forbedding, backfill, or the relationship between earth cover loadand plate thickness of the pipe. Experience has
5、shown that thesuccessful performance of this product depends upon theproper selection of plate thickness, type of bedding andbackfill, controlled manufacture in the plant, and care in theinstallation. The purchaser must correlate the above factors andalso the corrosion and abrasion requirements of t
6、he fieldinstallation with the plate thickness. The structural design ofcorrugated aluminum structural plate pipe and the properinstallation procedures are given in Practices B790/B790M andB789/B789M, respectively. A procedure for using life-cyclecost analysis techniques to evaluate alternate drainag
7、e systemdesigns using corrugated metal pipe is given in Practice A930.1.3 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. The values stated ineach system are not exact equivalents; therefore, each systemshall be used independently of the other.2. Re
8、ferenced Documents2.1 ASTM Standards:2A153/A153M Specification for Zinc Coating (Hot-Dip) onIron and Steel HardwareA307 Specification for Carbon Steel Bolts, Studs, andThreaded Rod 60 000 PSI Tensile StrengthA449 Specification for Hex Cap Screws, Bolts and Studs,Steel, Heat Treated, 120/105/90 ksi M
9、inimum TensileStrength, General UseA563 Specification for Carbon and Alloy Steel NutsA563M Specification for Carbon and Alloy Steel Nuts (Met-ric)A930 Practice for Life-Cycle Cost Analysis of CorrugatedMetal Pipe Used for Culverts, Storm Sewers, and OtherBuried ConduitsB209 Specification for Aluminu
10、m and Aluminum-AlloySheet and PlateB209M Specification for Aluminum and Aluminum-AlloySheet and Plate (Metric)B221 Specification for Aluminum and Aluminum-Alloy Ex-truded Bars, Rods, Wire, Profiles, and TubesB221M Specification for Aluminum and Aluminum-AlloyExtruded Bars, Rods, Wire, Profiles, and
11、Tubes (Metric)B666/B666M Practice for Identification Marking of Alumi-num and Magnesium ProductsB695 Specification for Coatings of Zinc Mechanically De-posited on Iron and SteelB789/B789M Practice for Installing Corrugated AluminumStructural Plate Pipe for Culverts and SewersB790/B790M Practice for
12、Structural Design of CorrugatedAluminum Pipe, Pipe-Arches, and Arches for Culverts,Storm Sewers, and Other Buried ConduitsB864/B864M Specification for Corrugated Aluminum BoxCulvertsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsF467 Specification f
13、or Nonferrous Nuts for General UseF467M Specification for Nonferrous Nuts for General Use(Metric)F468 Specification for Nonferrous Bolts, Hex Cap Screws,Socket Head Cap Screws, and Studs for General UseF468M Specification for Nonferrous Bolts, Hex Cap Screws,and Studs for General Use (Metric)1This s
14、pecification is under the jurisdiction of ASTM Committee B07 on LightMetals and Alloys and is the direct responsibility of Subcommittee B07.08 onCorrugated Aluminum Pipe and Corrugated Aluminum Structural Plate.Current edition approved Nov. 1, 2016. Published November 2016. Originallyapproved in 198
15、9. Last previous edition approved in 2012 as B746/B746M 02 (2012). DOI: 10.1520/B0746_B0746M-16.2For 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 Docume
16、nt Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1F568M Specification for Carbon and Alloy Steel ExternallyThreaded Metric Fasteners (Metric) (Withdrawn 2012)3F593 Specification for Stainless Steel Bol
17、ts, Hex CapScrews, and StudsF594 Specification for Stainless Steel NutsF738M Specification for Stainless Steel Metric Bolts,Screws, and Studs (Withdrawn 2014)3F836M Specification for Style 1 Stainless Steel Metric Nuts(Metric)2.2 American National Standards:4B18.2.1 Square and Hex Bolts and Screws,
18、Inch SeriesB18.2.2 Square and Hex NutsB18.2.3.6M Bolts, Metric, Heavy HexB18.2.4.6M Hex Nuts, Heavy, Metric3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 arch, na part circle shape spanning an open invertbetween the footings on which it rests.3.1.2 box culvert, na rectangular
19、 box with short-radius inupper corners and a long-radius crown. It can be with fullinvert or with footing pads.3.1.3 fabricator, nthe producer of the components for thefinished product.3.1.4 flat plate, nsheet or plate used to fabricate structuralplate.3.1.5 manufacturer, nthe producer of the flat p
20、late andaccessories.3.1.6 pipe, na conduit having full circular shape; also, ina general context, all structure shapes covered by this specifi-cation.3.1.7 pipe-arch, nan arch shape with an approximatesemicircular crown, small-radius corners, and large-radiusinvert.3.1.8 pipe, horizontal ellipse, na
21、n elliptically shaped pipewith the horizontal diameter approximately 20 % greater thanthe nominal diameter.3.1.9 pipe, vertically elongated, nan elliptically shapedpipe with the vertical diameter up to 10 % greater than thenominal diameter.3.1.10 purchaser, nthe purchaser of the finished product.3.1
22、.11 special shape, na shape, other than describedelsewhere in this section, suitable for fabrication with struc-tural plate.3.1.12 structural plate, na corrugated and curved platewhich is field assembled with other structural plates to form therequired structure.3.1.13 vehicular underpass, na high a
23、rch shape with anapproximate semicircular crown, large-radius sides, small-radius corners between sides and invert, and large-radiusinvert.4. Ordering Information4.1 Orders for material under this specification shall includethe following information as necessary to adequately describethe desired pro
24、duct:4.1.1 Name of material (aluminum alloy structural plate andaccessories),4.1.2 Description of structure (see Section 3),4.1.3 Number of structures,4.1.4 ASTM designation and year of issue, as B746_ forinch-pound units or B746M_ for SI units,4.1.5 Dimensions of structure (diameter or span and ris
25、e,and length, and so forth) (see 7.2),4.1.6 Thickness of plate (see 7.1),4.1.7 Type of bolts; whether aluminum, stainless steel, orsteel bolts are required or permitted. If not specified, steel boltsand nuts shall be furnished (see 5.3 and Note 2),4.1.8 End treatment (bevel, skew, grade or slopecorr
26、ections, or other special provision if required by the projectplans or specifications),4.1.9 Special requirements (including extrusion reinforce-ment locations and shapes), if required, and4.1.10 Certification, if required.NOTE 1Typical ordering descriptions are as follows: (1) Structuralplates and
27、fasteners for two aluminum alloy structural plate pipes, inaccordance with ASTM B746_, 180-in. dia., 0.100-in. plate thickness,each 140-ft nominal centerline length with end treatment as shown onplans. (2) Structural plates and fasteners for one aluminum alloy structuralplate pipe arch, in accordanc
28、e with ASTM B746_, 3860 mm span by2460 mm rise, 3.81 mm plate thickness, 27.0 m nominal centerline lengthwith square ends.5. Materials5.1 Flat PlateInsofar as applicable, flat plate shall con-form to the requirements of Specification B209 or B209M. Theplates shall be fabricated from alloy 5052-H141.
29、 The mechani-cal properties for alloy 5052-H141 shall conform to therequirements of Table 1.5.2 ExtrusionsThe extrusions for circumferential or lon-gitudinal stiffeners, or secondary structural components, shallbe fabricated from aluminum alloys 6061-T6 or 6063-T6conforming to Specification B221 or
30、B221M.5.3 Assembly FastenersExcept as provided elsewhere inthis section, bolts and nuts shall conform to the requirementsspecified in Tables 2 and 3. The bearing surface of both boltsand nuts shall be shaped to a 1-in. (25-mm) radius sphericalsurface, or to a uniform taper of approximately 22 to for
31、m aconical surface. In instead of bolts and nuts with the specialbearing surface, standard type bolts and nuts with specialwashers may be used. The number of nuts and bolts of eachsize and length furnished shall be 2 % in excess of thetheoretical number required to field erect the structure orstruct
32、ures. Bolt lengths shall be such as to result in at least “fullnut” engagement when tightened in place.NOTE 2Aluminum bolts and nuts, due to lower strength propertiesthan steel bolts, have lower allowable design seam strengths in pipe withall plate thicknesses, but especially so for plate thicknesse
33、s greater than0.175 in. (4.44 mm). The purchaser should indicate which bolts and nutsare acceptable or required based on his design calculations. Corrosion3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American National Standards Institute (ANSI),
34、 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.B746/B746M 162should be considered in selecting bolt types for use in corrosive environ-ments.6. Fabrication6.1 Structural plates shall be fabricated from flat sheets orplates, corrugated in accordance with 6.2, punched for boltedlap
35、seams in accordance with 6.3 and curved to the requiredradius.6.2 CorrugationsCorrugations shall form smooth continu-ous curves and tangents. Corrugations shall form annular rings(complete or partial) about the axis of the structure. Thedimensions of the corrugations shall be in accordance withTable
36、 4.6.3 Bolt HolesThe bolt holes shall be punched so that allplates having like dimensions, curvature, and same number ofbolts per foot of seam shall be interchangeable. Longitudinalseams shall have holes for four bolts per corrugation, with twoholes in each valley and two holes in each crest, with t
37、he holesplaced 134 in. (45 mm) apart. Circumferential seams in thefinished product shall provide for a bolt spacing of not morethan 10 in. (250 mm). The diameter of the bolt holes in thelongitudinal seams shall not exceed the bolt diameter by morethan18 in. (3 mm) except those in the plate corners.
38、Bolt holesin circumferential seams, including plate corners, may beslotted with a width equal to the bolt diameter plus14 in.(3 mm) and a length equal to the bolt diameter plus38 in.(10 mm). The minimum distance from the center of a hole tothe edge of a plate shall be 134 times the diameter of the b
39、olt.Holes shall be provided as required for connecting headwallanchors, bearings, and miscellaneous attachments.6.4 Special PlatesPlates for forming skewed ends, bev-eled ends, or curved alignment shall be accurately cut to fit theorder plans. Cut edges of plates shall be free of notches,gouges, or
40、burrs and shall present a workmanlike finish.Legible identification shall be placed on each special plate todesignate its proper position in the finished structure andreferenced to the approved erection drawings.6.5 ExtrusionsExtrusions for longitudinal or circumferen-tial structural reinforcing, if
41、 required, shall be as sized andlocated on the order plans, and fabricated from aluminum alloy6061-T6. Extrusions for receiving angles or receiving channelson arches or other less critical structural members, if required,shall be as sized and located on the order plans, and shall befabricated from a
42、luminum alloy 6061-T6 or 6063-T6.NOTE 3Refer to Specification B864/B864M for circumferential stiff-ening rib profiles, properties, and capacities.TABLE 1 Mechanical Properties of Aluminum Structural Plate, Alloy 5052-H141ASpecified ThicknessTensile Strength,minYield Strength(0.2 % offset), minElonga
43、tion, %min in 2 in. or50 mmin. mm ksi MPa ksi MPa0.1000.1500.1750.2502.543.814.446.3535.534.024523524.024.016516568ATo determine conformance with this specification, each value for tensile strength and for yield strength shall be rounded to the nearest 0.1 ksi (1 MPa) and each valuefor elongation to
44、 the nearest 0.5%, both in accordance with the rounding method of Practice E29.TABLE 2 (B746) Bolt and Nut RequirementsBolts NutsGeneral Dimensions ANSI B18.2.1 Heavy Hex ANSI B18.2.2 Heavy HexSteel Bolts and Nuts A307AA563 Grade AZinc Coating A153/A153M or B695 Class 50 A153/A153M or B695 Class 50S
45、tainless Steel Bolts and Nuts F593 Alloy Group 1, 2, or 3 F594 Alloy Group 1, 2, or 3Aluminum Bolts and Nuts F468 Alloy 6061-T6 F467 Alloy 6061-T6Nominal Diameter, in.3434ABolts conforming to Specification A449 with suitable nuts may be substituted.TABLE 3 (B746M) Bolt and Nut RequirementsBolts Nuts
46、General Dimensions ANSI B18.2.3.6M Heavy Hex ANSI B18.2.4.6M Heavy HexSteel Bolts and Nuts F568M Class 4.6AA563M Class 5Zinc Coating A153/A153M or B695 Class 50 A153/A153M or B695 Class 50Stainless Steel Bolts and Nuts F738M Alloy Group A1, A2, or A4 F836M Alloy Group A1, A2, or A4Aluminum Bolts and
47、 Nuts F468M Alloy 6061-T6 F467M Alloy 6061-T6Nominal Diameter, metric size M 20 M 20ABolts through Class 8.8 with suitable nuts may be substituted.TABLE 4 Corrugation RequirementsNominalSizeMaximumPitchAMinimumDepthBInside RadiusNominal MinimumB746All values in in.9by212 938 238 214 2.0B746MAll valu
48、es in mm230 by 64 238 60 57 51APitch is measured from crest to crest of corrugations, at 90 to the direction of thecorrugations.BDepth is measured as the vertical distance from a straightedge resting on thecorrugation crests parallel to the axis of the pipe, to the bottom of the interveningvalley.B7
49、46/B746M 1637. Dimensions7.1 Plate ThicknessPlate thickness shall be as specified bythe purchaser from the specified plate thickness listed in Table5 (Note 4). For corrugated plate, the thickness shall bemeasured on the tangents of the corrugations.NOTE 4The purchaser should determine the required thicknessaccording to the design criteria in Practice B790/B790M.7.2 Cross-Section DimensionsCross-section dimensions,such as diameter, span and rise, and radius of curvature, shallbe measured to the inside crest of corrugations.
