1、Standard Specification for Corrugated Steel Pipe, Metallic-Coated, for Sewers and Drains AASHTO Designation: M 36-161 Release: Group 2 (June 2016) ASTM Designation: A760/A760M-01a American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington,
2、D.C. 20001 TS-4b M 36-1 AASHTO Standard Specification for Corrugated Steel Pipe, Metallic- Coated, for Sewers and Drains AASHTO Designation: M 36-161Release: Group 2 (June 2016) ASTM Designation: A760/A760M-01a 1. SCOPE 1.1. This specification covers corrugated steel pipe (CSP) intended for use for
3、storm water drainage, underdrains, the construction of culverts, and similar uses. Pipe covered by this specification is not normally used for the conveyance of sanitary or industrial wastes. The steel sheet used in fabrication of the pipe has a protective metallic coating of zinc (galvanizing), alu
4、minum Type 2, 55 percent aluminum-zinc alloy, zinc-5 percent aluminum-mischmetal alloy, or aluminum Type 1. 1.2. The several different metallic coatings may not provide equal protection of the base metal against corrosion or abrasion, or both, in all environments. Some environments may be so severe
5、that none of the metallic coatings included in this specification will provide adequate protection. Additional protection for CSP can be provided by use of coatings applied after fabrication of the pipe as described in M 190, or by use of polymer-precoated CSP as described in M 245. 1.3. This specif
6、ication does not include requirements for bedding, backfill, or the relationship between earth cover load and sheet thickness of the pipe. Experience has shown that the successful performance of this product depends upon the proper selection of sheet thickness, type of bedding and backfill, controll
7、ed manufacture in the plant, and care in the installation. The installation procedure is described in AASHTO LRFD Bridge Construction Specifications, Section 26. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: M 190, Bituminous-Coated Corrugated Metal Culvert Pipe and Pipe-Arches M 218, Steel Sheet,
8、Zinc-Coated (Galvanized), for Corrugated Steel Pipe M 232M/M 232, Zinc Coating (Hot-Dip) on Iron and Steel Hardware M 245, Corrugated Steel Pipe, Polymer-Precoated, for Sewers and Drains M 274, Steel Sheet, Aluminum-Coated (Type 2), for Corrugated Steel Pipe M 289, Aluminum-Zinc Alloy Coated Sheet S
9、teel for Corrugated Steel Pipe T 65M/T 65, Mass Weight of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings T 213M/T 213, Mass Weight of Coating on Aluminum-Coated Iron or Steel Articles T 241, Helical Continuously Welded Seam Corrugated Steel Pipe T 249, Helical Lock Seam Corrugat
10、ed Pipe AASHTO LRFD Bridge Construction Specifications AASHTO LRFD Bridge Design Specifications 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-4b M 36-2 AASHTO 2.2. ASTM Standards: A563M, Standard S
11、pecification for Carbon and Alloy Steel Nuts (Metric) A780/A780M, Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings A796/A796M, Standard Practice for Structural Design of Corrugated Steel Pipe, Pipe-Arches, and Arches for Storm and Sanitary Sewers and Other Bu
12、ried Applications A929/A929M, Standard Specification for Steel Sheet, Metallic-Coated by the Hot-Dip Process for Corrugated Steel Pipe B633, Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel B695, Standard Specification for Coatings of Zinc Mechanically Deposited on Iron
13、 and Steel C443M, Standard Specification for Joints for Concrete Pipe and Manholes, Using Rubber Gaskets (Metric) D1056, Standard Specification for Flexible Cellular MaterialsSponge or Expanded Rubber F568M, Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners (with
14、drawn 2012) 2.3. AISI Standard: S100, North American Specification for the Design of Cold-Formed Steel Structural Members 3. TERMINOLOGY 3.1. Description of Terms Specific to This Standard: 3.1.1. fabricatorthe producer of the pipe. 3.1.2. manufacturerthe producer of the sheet. 3.1.3. minimized coat
15、ing structurea coating characterized by a finer metallurgical coating structure obtained by a treatment designed to restrict the formation of the normal coarse-grain structure formed during solidification of the Zn-5 Al-MM alloy coating. 3.1.4. purchaserthe purchaser of the finished product. 3.1.5.
16、regular coating structurethe normal coating structure resulting from unrestricted grain growth during normal solidification of the Zn-5 A1-MM alloy coating. 3.2. Abbreviations: 3.2.1. 55 Al-Zn55 percent aluminum-zinc, 3.2.2. MMmischmetal, 3.2.3. Zn-5 Al-MMzinc-5 percent aluminum-mischmetal, 3.2.4. A
17、lT2aluminum-coated Type 2, and 3.2.5. AlT1aluminum-coated Type 1. 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-4b M 36-3 AASHTO 4. PIPE CLASSIFICATION 4.1. The CSP covered by this specification is
18、 classified as follows: 4.1.1. Type IThis pipe shall have a full circular cross section, with a single thickness of corrugated sheet, fabricated with annular (circumferential) or helical corrugations. 4.1.2. Type IAThis pipe shall have a full circular cross section, with an outer shell of corrugated
19、 sheet and an inner liner of smooth (uncorrugated) sheet, fabricated with helical corrugations and lock seams. 4.1.3. Type IRThis pipe shall have a full circular cross section with a single thickness of smooth sheet, fabricated with helical ribs projecting outwardly. 4.1.4. Type IIThis pipe shall be
20、 a Type I pipe that has been reformed into a pipe-arch having an approximately flat bottom. 4.1.5. Type IIAThis pipe shall be a Type IA pipe that has been reformed into a pipe-arch having an approximately flat bottom. 4.1.6. Type IIRThis pipe shall be a Type IR pipe that has been reformed into a pip
21、e-arch having an approximately flat bottom. 4.1.7. Type IIIThis pipe, intended for use as underdrains or for underground disposal of water, shall be a Type I pipe that has been perforated to permit the inflow or outflow of water. 4.1.8. Type IIIAThis pipe, intended for use as underdrains, shall cons
22、ist of a semicircular cross section having a smooth (uncorrugated) bottom with a corrugated top shield. 4.2. Perforations in Type III pipe are included in three classes as described in Section 8.3.2. 4.3. Zn-5 Al-MM alloy-coated material is available in two coating classes, or structures, as follows
23、: 4.3.1. Class AMinimized coating structure. 4.3.2. Class BRegular coating structure. 5. ORDERING INFORMATION 5.1. Orders for material to this specification shall include the following information, as necessary, to adequately describe the desired product: 5.1.1. Name of material (corrugated steel pi
24、pe); 5.1.2. Type of metallic coating (zinc, aluminum-coated Type 2, aluminum-coated Type 1, 55 Al-Zn alloy or Zn-5 Al-MM alloy) (Section 6.1); 5.1.2.1. For Zn-5 Al-MM alloy, class of coating structure (Class A, minimized, etc.) (Section 4.3); 5.1.3. AASHTO designation and date of issue (M 36-_); 5.1
25、.4. Type of pipe (Section 4.1); 5.1.5. Diameter of circular pipe (Table 6), or span and rise of pipe-arch section (Tables 8, 9, 10, or 11); 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-4b M 36-4 A
26、ASHTO 5.1.6. Length, either total length or length of each piece and number of pieces; 5.1.7. Description of corrugations (Section 7.2); 5.1.8. Sheet thickness (Section 8.1.2); 5.1.9. For Type I and Type II pipe, the pipe fabrication method, whether with annular corrugations or helical corrugations
27、(Section 7.1.1) (Note 1); Note 1Pipe with annular corrugations with spot welded or riveted seams is designed by different criteria than pipe with helical corrugations. Pipe with annular corrugations must consider seam strength. Therefore, consideration of the method of fabrication is important when
28、pipe is installed under certain conditions of loading. 5.1.10. Joining systems, including the type of joint from Section 9.1 and gasket, if required (If no joining system is specified, the fabricator shall select the system.); 5.1.11. For Type III pipe, class of perforations, if other than Class 1 (
29、Section 8.3.2); 5.1.12. Certification, if required (Section 14.1); and 5.1.13. Special requirements. 6. MATERIALS 6.1. Steel Sheet for PipeAll pipe fabricated under this specification shall be formed from zinc-coated sheet conforming to M 218, or aluminum-coated Type 2 sheet conforming to M 274, 55
30、percent aluminum-zinc alloy-coated sheet conforming to M 289, or zinc-5 percent aluminum-mischmetal alloy-coated sheet conforming to ASTM A929/A929M, or aluminum-coated Type 1 conforming to ASTM A929/A929M. If the type of metallic coating is not stated in the order, zinc-coated sheet conforming to M
31、 218 shall be used. All pipe furnished on the order shall have the same metallic coating, unless otherwise specified. 6.2. Steel Sheet for Coupling BandsThe sheet used in fabricating coupling bands shall have the same coating and shall conform to the same specification listed in Section 6.1 as that
32、used for fabrication of the pipe furnished under the order. 6.3. RivetsThe rivets used in riveted pipe shall be of the same material as the base metal specified for the corrugated sheets. They shall be thoroughly galvanized or sherardized. If bolts and nuts are substituted for rivets (Section 7.3.1)
33、, they shall meet the following requirements: Bolts Nuts F568M A563M Class 8.8 Class 12 6.4. The bolts and nuts shall be hot-dip galvanized in conformance with M 232M/M 232 mechanically galvanized in conformance with ASTM B695, Class 40. 6.5. Hardware for Joining SystemsBolts and nuts for coupling b
34、ands shall conform to the following requirements: Bolts Nuts F568M A563M Class 4.6 Class 5 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-4b M 36-5 AASHTO 6.6. Bolts, nuts, and other threaded items
35、used with joining systems shall be zinc coated by one of the following processes: hot-dip process as provided in M 232M/M 232; electroplating process as provided in ASTM B633, Class Fe/Zn 8; or mechanical process as provided in ASTM B695, Class 8. Other hardware items used with coupling bands shall
36、be zinc coated by one of the following processes: hot-dip process as provided in M 232M/M 232; electroplating process as provided in ASTM B633, Class Fe/Zn 25; or mechanical process as provided in ASTM B695, Class 25. 6.7. GasketsIf gaskets are used in joining systems, they shall be a band of expand
37、ed rubber meeting the requirements of ASTM D1056 for the “RE” closed cell grades, or O-rings meeting the requirements of ASTM C443M. 7. FABRICATION 7.1. General RequirementsPipe shall be fabricated in full circular cross section except for Type IIIA, which is described in Section 8.4. 7.1.1. Type I
38、pipe shall have annular corrugations with lap joints fastened with rivets or resistance spot welds, or shall have helical corrugations with a continuous lock seam or welded seam extending from end to end of each length of pipe. The type of fabrication used shall be the option of the fabricator unles
39、s otherwise specified. 7.1.2. Type IA pipe shall be fabricated with a smooth liner and helically corrugated shell integrally attached at helical lock seams extending from end to end of each length of pipe. The shell shall have corrugations of nominal 68- or 75-mm pitch. 7.1.3. Type IR pipe shall be
40、fabricated with helical ribs projecting outward with a continuous lock seam extending from end to end of each length of pipe. 7.2. CorrugationsThe corrugations shall be either annular or helical as provided in Section 7.1. The direction of the crests and valleys of helical corrugations shall not be
41、less than 60 degrees from the axis of the pipe for pipe diameters larger than 525 mm, and not less than 45 degrees from the axis for pipe diameters of 525 mm and smaller. 7.2.1. For Type I and IA pipe, corrugations shall form smooth continuous curves and tangents. The dimensions of the corrugations
42、shall be in accordance with Table 1 for the size indicated in the order, except if the depth measurement of one or more corrugations is less than the minimum depth in Table 1, the depth of all corrugations between adjacent seams shall be measured and the values of Table 2 for minimum average depth a
43、nd minimum corrugation depth shall apply. Table 1Corrugation Requirements for Type I, IA, II, IIA, and III Pipe Inside RadiuscNominal Size, mm Maximum Pitch,amm Minimum Depth,bmm Nominal, mm Minimum, mm 38 by 6.5d48 6.0 7 6.5 68 by 13 73 12 17 12 75 by 25 83 24 14 12 125 by 25 135 24 40 36 aPitch is
44、 measured from crest to crest of corrugation, at 90 degrees to the direction of corrugation. bDepth is measured as the vertical distance from a straightedge resting on the corrugation crests parallel to the axis of the pipe to the bottom of the intervening valley. If the depth measurement of one or
45、more corrugations is less than the value indicated herein, the depth of all corrugations between seams shall be measured, and the requirements of Table 2 shall be applied. (See Section 7.2.1.) cMinimum inside radius requirement does not apply to a corrugation containing a helical lock seam. dThe cor
46、rugation size of 38 by 6.5 mm is available only in helically corrugated pipe. 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-4b M 36-6 AASHTO Table 2Referee Requirements for Corrugation Deptha Nomin
47、al Size, mm Diameter, mm Minimum Average Depth, mm Minimum Corrugation Depth, mm 38 by 6.5 All 6.1 5 68 by 13 300 through 525 12.1 10 68 by 13 Greater than 525 12.4 11 75 by 25 All 24.9 23 125 by 25 All 24.9 23 aSee Section 7.2.1 for application of Table 2. Note 2Inspection frequently consists of me
48、asurement of the depth of one or a few corrugations. If such measurement indicates insufficient depth, application of the requirements in Table 2 provides for acceptance in cases in which greater depth of some corrugations compensates for lack of depth of others. These measurements would normally be
49、 made at one location between seams on a length of pipe. 7.2.2. For Type IR pipe, the corrugations shall be essentially rectangular ribs projecting outward from the pipe wall. The dimensions and spacing of the ribs shall be in accordance with Table 3 for the size indicated on the order. For the 292-mm rib spacing, if the sheet between the ribs does not include a lock seam, a stiffener shall be included midway between the ribs. This stiffener shall have a nominal radius of 6.4 mm and a minimum height
