1、Standard Specification for Perforated Concrete Pipe AASHTO Designation: M 175M/M 175-05 (2013) ASTM Designation: C444M-03 and C444-03 American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001TS-4a M 175M/M 175-1 AASHTO Standard
2、 Specification for Perforated Concrete Pipe AASHTO Designation: M 175M/M 175-05 (2013) ASTM Designation: C444M-03 and C444-03 1. SCOPE 1.1. This specification covers perforated concrete pipe intended to be used for underdrainage. 1.2. This specification is applicable for orders in either SI units (M
3、 175M) or in inch-pound units (M 175). SI units and inch-pound units are not necessarily equivalent. Inch-pound units are shown in brackets in the text for clarity, but they are the applicable values when the material is ordered to M 175. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: M 86M/M 86, No
4、nreinforced Concrete Sewer, Storm Drain, and Culvert Pipe M 262, Concrete Pipe and Related Products 3. TERMINOLOGY 3.1. DefinitionsFor definitions of terms relating to concrete pipe, see M 262. 4. CLASSIFICATION 4.1. Pipe manufactured according to this specification shall be of two classes known as
5、Type 1 and Type 2, which cover two arrangements of perforations to be used with pipe manufactured according to any of the standard specifications for plain or reinforced concrete pipe, and any of the classifications within those standard specifications. 4.1.1. Type 1 perforated pipe shall have circu
6、lar perforations conforming to Section 6.1 and Table 1. 4.1.2. Type 2 perforated pipe shall have slotted perforations conforming to Section 6.2 and Table 2. 4.1.3. It is intended that perforated pipe shall be specified by reference to this specification and the specification for the type and class o
7、f pipe desired. Note 1Example“Perforated concrete pipe shall conform to the requirements of M 175M/M 175, Type 2, and all applicable requirements of M 86M/M 86, Class 2.” 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of
8、 applicable law.TS-4a M 175M/M 175-2 AASHTO 5. BASIS OF ACCEPTANCE 5.1. The acceptability of the pipe shall be determined by the results of all applicable tests (Note 2) prescribed for the type and class of pipe specified, and by inspection to determine whether the pipe conforms to this specificatio
9、n as to design and freedom from defects. Note 2It is intended that all tests will be applicable except those having to do with permeability and the hydrostatic test. 6. PERFORATIONS 6.1. Type 1Perforations shall be circular, not more than 8 mm 5/16in. or less than 5 mm 3/16in. in diameter, and arran
10、ged in rows parallel to the axis of the pipe. Perforations shall be 75 mm 3 in. center-to-center, along rows. The spigot or tongue end shall not be perforated for a length equal to the depth of the socket, or depth of the groove plus 19 mm 3/4in., and perforations shall continue at uniform spacing a
11、long the entire length of the barrel. The total number of rows shall be as shown in Table 1. The rows shall be spaced over not more than 165 degrees of circumference. Rows shall be symmetrically arranged with respect to the intended top or bottom of the pipe. Table 1Number of Rows of Perforations Re
12、quired Internal Designation Diameter Rows of Perforations mm in. 100 4 4 150 6 4 200 8 4 250 10 6 300 12 6 350 14 6 375 15 6 400 16 6 450 18 8 500 20 8 525 21 8 600 24 8 675 and larger 27 and larger space rows approximately 150 mm 6 in. 6.2. Type 2Slots shall be circumferential in direction, not mor
13、e than 5 mm 3/16in. or less than 3 mm 1/8in. in width, and of the lengths shown in Table 2. There shall be two rows of slots, spaced 165 degrees apart and centered, in the case of elliptically reinforced pipe, about the minor axis of the reinforcing. Slots shall be spaced as shown in Table 2, except
14、 as modified herein for plain-end pipe. The distance from the spigot end, or from the shoulder of the tongue end, to the first pair of slots shall be not more than 25 mm 1 in. greater than the specified slot spacing, or less than 25 mm 1 in. less than the specified slot spacing. Slots shall continue
15、 at uniform spacing along the entire length of the barrel. 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-4a M 175M/M 175-3 AASHTO Table 2Requirements for Length and Spacing of Slots Internal Designa
16、tion Diameter Slot Length Slot Spacingamm in. mm in. mm in. 100 4 25 1 75 3 150 6 38 11/275 3 200 8 50 2 100 4 250 10 50 2 100 4 300 12 75 3 150 6 350 14 75 3 150 6 375 15 75 3 150 6 400 16 75 3 150 6 450 18 75 3 150 6 500 20 75 3 150 6 525 21 75 3 150 6 600 24 75 3 150 6 675 and larger 27 and large
17、r 100 4 150 6 aSee Section 6.2 for exceptions for plain-end pipe. 6.2.1. Slots in plain-end pipe shall be spaced as shown in Table 2 except that smaller spacing shall be used where necessary to provide not less than three equally spaced slots in each row. Slots shall be centered with respect to the
18、ends of the pipe and there shall be not more than the specified slot spacing from the pipe end to the first pair of slots, or less than one half of the slot spacing employed. 6.3. The manufacturer shall submit to the owner for approval, prior to manufacture, sizes and arrangements of perforations ot
19、her than specified herein. 7. JOINTS 7.1. The joints shall be of such design and the ends of the concrete pipe sections so formed that the pipe can be laid together to make a continuous line of pipe compatible with the permissible variations given in Section 8. 8. PERMISSIBLE VARIATION IN DIMENSIONS
20、 8.1. The permissible variation in circular perforation size or slot width shall be as specified in Section 6. Slot length tolerance is +6 mm +1/4in. or 3 mm 1/8in. Variation in row spacing, or in the spacing of holes or slots in any row, shall be 13 mm 1/2in. except as required to provide specified
21、 cover for reinforcing steel. 9. REPAIRS 9.1. Pipe repaired because of imperfections in manufacture or damage during handling will be acceptable if, in the opinion of the owner, the repairs are sound and properly finished and cured and the pipe conforms to the requirements of this specification. 201
22、5 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-4a M 175M/M 175-4 AASHTO 10. MARKING OF REJECTED SPECIMENS 10.1. All rejected pipe shall be marked clearly by the owner and shall be replaced by the manufa
23、cturer with pipe that will meet the requirements of this specification, without additional cost to the owner. 11. INSPECTION 11.1. The quality of all materials and the finished pipe shall be subject to inspection and approval by the owner. Such inspection shall be performed at the point of manufactu
24、re or delivery. The method of marking as to acceptance or rejection of the pipe shall be agreed upon, prior to inspection, between the owner and manufacturer. Rejected pipe shall be replaced by the manufacturer with pipe that meets the requirements of this specification. 12. REJECTION 12.1. Pipe sha
25、ll be subject to rejection on account of any of the applicable causes for rejection listed for the type and class of pipe specified, or on account of any of the following: 12.1.1. Variations in dimensions exceeding those specified in Sections 6 and 8, or 12.1.2. Any spall more than 19 mm 3/4in. in d
26、iameter or 5 mm 3/16in. in depth caused by making perforations or slots. 13. KEYWORDS 13.1. Concrete pipe; perforated; subsurface drainage; underdrainage. 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.
