1、Designation: A807/A807M 13A807/A807M 17Standard Practice forInstalling Corrugated Steel Structural Plate Pipe for Sewersand Other Applications1This standard is issued under the fixed designation A807/A807M; the number immediately following the designation indicates the yearof original adoption or, i
2、n 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.1. Scope1.1 This practice primarily covers procedures, soils, and soil placement for the prope
3、r installation of corrugated steel structuralplate pipe, pipe-arches, arches, and underpasses produced to Specification A761/A761M, in either trench or embankmentinstallations. This practice also covers installation of structural plate for alternative uses that do not involve backfilling orsoil-stru
4、cture interaction.1.2 This practice covers procedures, soils, and soil placement for the proper installation of corrugated steel structural plate pipe,pipe-arches, arches, and underpasses produced to Specification A761/A761M, in either trench or embankment installations. Atypical trench installation
5、 and a typical embankment (projection) installation are shown in Figs. 1 and 2, respectively. Structuralplate structures as described herein are those structures factory fabricated in plate form and bolted together on site to provide therequired shape, size, and length of structure. This practice ap
6、plies to structures designed in accordance with Practice A796/A796M.1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the a
7、pplicability of regulatorylimitations prior to use.1.3 The values stated in either inch-pound units or SI units shall be regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system must be used independently of the other, without combining va
8、luesin any way. SI units are shown in brackets in the text for clarity, but they are the applicable values when the installation is to beperformed using SI units.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the
9、user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability ofregulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the
10、 Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A761/A761M Specification for Corrugated Steel Structural Plate, Zinc-Coated,
11、 for Field-Bolted Pipe, Pipe-Arches, and ArchesA796/A796M Practice for Structural Design of Corrugated Steel Pipe, Pipe-Arches, and Arches for Storm and Sanitary Sewersand Other Buried ApplicationsA902 Terminology Relating to Metallic Coated Steel ProductsD698 Test Methods for Laboratory Compaction
12、Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3)D1556 Test Method for Density and Unit Weight of Soil in Place by Sand-Cone MethodD1557 Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3 (2,700kN-m/m3)D2167 Test Metho
13、d for Density and Unit Weight of Soil in Place by the Rubber Balloon MethodD2487 Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)1 This practice is under the jurisdiction of ASTM Committee A05 on Metallic-Coated Iron and Steel Products and is the dir
14、ect responsibility of Subcommittee A05.17on Corrugated Steel Pipe Specifications.Current edition approved Nov. 1, 2013Dec. 1, 2017. Published November 2013December 2017. Originally approved in 1982. Last previous edition approved in 20082013as A807/A807M - 02A807/A807M - 13.(2008). DOI: 10.1520/A080
15、7_A0807M-13.10.1520/A0807_A0807M-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an A
16、STM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In
17、all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1D6938 Test Methods for In-Place Density and Water Content of Soil and Soi
18、l-Aggregate by Nuclear Methods (Shallow Depth)D2937 Test Method for Density of Soil in Place by the Drive-Cylinder Method2.2 AASHTO Standards3AASHTO LRFD Construction Specifications3. Terminology3.1 DefinitionsFor definitions of general terms used in this practice, refer to Terminology A902.3.2 Defi
19、nitions of Terms Specific to This Standard:3.2.1 archa part circle shape spanning an open invert between the footings on which it rests.3.2.2 beddingthe earth or other material on which a pipe is supported.3.2.3 haunchthe portion of the pipe cross section between the maximum horizontal dimension and
20、 the top of the bedding.3.2.4 invertthe lowest point on the pipe cross section; also, the bottom portion of a pipe.3 Available from American Association of State Highway and Transportation Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,http:/www.transportation.org.FIG. 1
21、 Typical Trench InstallationFIG. 2 Typical Embankment (Projection) InstallationA807/A807M 1723.2.5 pipea conduit having full circular shape; also, in a general context, all structure shapes covered by this practice.3.2.6 pipe-archan arch shape with an approximate semicircular crown, small-radius cor
22、ners, and large-radius invert.3.2.7 underpassa high arch shape with an approximate semicircular crown, large-radius sides, small-radius corners betweensides and invert, and large-radius invert.4. Significance and Use4.1 Structural plate structures function structurally as a flexible ring that is sup
23、ported by and interacts with the compactedsurrounding soil. The soil placed around the structure is thus an integral part of the structural system. It is therefore important toensure that the soil structure is made up of acceptable material and is well constructed. Field verification of soil structu
24、reacceptability using Test Methods D1556, D2167, D6938, or D2937, as applicable, and comparing the results with either TestMethods D698 or D1557, in accordance with the specifications for each project, is the most common basis for installation of anacceptable structure. Depending on the backfill use
25、d, other qualitative or performance-based methods acceptable to the engineermay also be used. The required density and method of measurement are not specified by this practice, but must be established inthe specifications for each project.4.2 Structural plate structures are also occasionally used in
26、 alternative applications not requiring soil-structure interaction forsupport. Depending on the application the structure may provide temporary or permanent support, confinement, concealment,shielding, or other functions not related to soil-structure interaction. The nature of support required, desi
27、gn requirements, andproper sizing of the structure will be determined by a project design engineer and is not part of the scope of this standard.5. Trench Excavation5.1 To obtain the anticipated structural performance of structural plate structures, it is not necessary to control trench widthbeyond
28、the minimum necessary for proper assembly of the structure and placement of the structural backfill. However, the soil oneach side beyond the excavated trench must be able to support anticipated loads. Any sloughed material shall be removed fromthe trench or compacted to provide the necessary suppor
29、t. When a construction situation calls for a relatively wide trench, it maybe made as wide as required, for its full depth if so desired. However, trench excavation must be in compliance with any local,state, and federal codes and safety regulations.6. Foundation6.1 The supporting soil beneath the s
30、tructure must provide a reasonably uniform resistance to the imposed load, bothlongitudinally and laterally. Sharp variations in the foundation must be avoided. When rock is encountered, it must be excavatedand replaced with soil. If the structure is to be placed on a continuous rock foundation, it
31、will be necessary to provide a beddingof soil between rock and structure. See Fig. 3.6.2 Lateral changes in foundation should never be such that the structure is firmly supported while the backfill on either sideis not. When soft material is encountered in the structure excavation and must be remove
32、d to maintain the grade (limit settlement)of the structure, then it must be removed, usually for a minimum of three structure widths (see Fig. 4).Asmaller width of removalcan sometimes be used if established by the engineer.6.3 Performance of buried structures is enhanced by allowing the structure t
33、o settle slightly relative to the columns of earthalongside. Therefore, when significant settlement of the overall foundation is expected, it is beneficial to provide a yieldingfoundation under structural plate structures. A yielding foundation is one that allows the structure to settle vertically b
34、y a greateramount than the vertical settlement of the columns of earth alongside. It can usually be obtained by placing a layer of compressiblesoil of suitable thickness beneath the structure that is less densely compacted than the soil alongside. This is particularly importanton structures with rel
35、atively large-radius invert plates.6.4 For all structures with relatively small-radius corner plates adjacent to large-radius invert plates (such as pipe-arches orunderpass structures), excellent soil support must be provided adjacent to the small-radius corner plates by both the in situfoundation a
36、nd the structural backfill. See Figs. 4 and 5.Ayielding foundation must be provided beneath the invert plates for suchstructures when soft foundation conditions are encountered.6.5 The engineer is encouraged to develop details specific to the site based on the general principles for foundation condi
37、tionsgiven in 6.1 through 6.4.7. Bedding7.1 In most cases, structural plate structures may be assembled directly on in-situ material fine-graded to proper alignment andgrade. Take care to compact the material beneath the haunches before placing structural backfill. Material in contact with the pipem
38、ust not contain rock retained on a 3 in. 75 mm diameter ring, frozen lumps, chunks of highly plastic clay, organic matter,corrosive material, or other deleterious material. For structures with relatively small-radius corner plates adjacent to large-radiusinvert plates, it is recommended to either sh
39、ape the bedding to the invert plate radius or fine-grade the foundation to a slightV-shape. The soil adjacent to the corners shall be of an excellent quality and highly compacted to accommodate the high reactionpressures that can develop at that location. See Fig. 5.A807/A807M 1737.2 Structures havi
40、ng a span greater than 15 ft 4.5 m or a depth of cover greater than 20 ft 6 m should be provided with ashaped bedding on a yielding foundation. The bedding should be shaped to facilitate the required compaction of the structuralbackfill under the haunches. A shaped bedding on a yielding foundation i
41、s always required under structures with small-radiuscorner plates adjacent to large-radius invert plates.8. Assembly8.1 Structural plate structures are furnished in components of plates and fasteners for field assembly. These components arefurnished in accordance with Specification A761/A761M. Plate
42、s are furnished in various widths and multiple lengths, preformedNOTE 1Section B-B is applicable to all continuous rock foundations.FIG. 3 Foundation Transition Zones and Rock FoundationsFIG. 4 Soft Foundation TreatmentA807/A807M 174and punched for assembling into the required structure shape, size,
43、 and length. The plate widths form the periphery of the structure.The various widths and the multiple lengths can be arranged to allow for staggered seams (longitudinal or transverse, or both) toavoid four-plate laps. The fabricator of the structural plate shall furnish an assembly drawing showing t
44、he location of each plateby width, length, thickness, and curvature. The plates must be assembled in accordance with the fabricators drawing.8.2 For structures with inverts, assembly shall begin with the invert plates at the downstream end. As assembly proceedsupstream, plates that fall fully or par
45、tly below the maximum width of the structure are lapped over the preceding plates to constructthe transverse seams.8.3 Arches have no integral invert and usually rest in special channels cast into, or connected to, footings. Channels must beaccurately set to span, line, and grade as shown on the fab
46、ricators drawing. When the arch is other than a half circle, the channelmust be rotated in the footing to allow for entrance of the plates. For arches with ends cut on a skew, the base channels will alsobe skewed, but properly aligned across the structure.All pertinent dimensions must be shown on th
47、e fabricators drawing. For archstructures, assembly begins at the upstream end and proceeds downstream, with each succeeding plate lapping on the outside ofthe previous plate. Plates attached to the footing channel are not self-supporting and will require temporary support. Assemble asfew plates as
48、practical, from the channels toward the top center of the structure, and complete the periphery to maintain thestructure shape.8.4 Generally, structural plate should be assembled with as few bolts as practical. These bolts should be placed loose and remainloose until the periphery has been completed
49、 for several plate lengths. However, on large structures, it is practical to align bolt holesduring assembly and tighten the bolts to maintain structure shape.After the periphery of the structure is completed for several platelengths, all bolts may be placed and tightened. Correct any significant deviation in structure shape before tightening bolts (seeSection 10). It is advisable not to tighten bolts on the loosely assembled structure within a distance of 30 ft 9 m of where plateassembly is ongoing. All bolts shall be tightened using an applied torque of
