1007.01 CORRUGATED STEEL PIPE AND PIPE ARCH. Metal
pipe shall be qualified products as determined by the Construction Fabrication Unit. Comply with the requirements of Type I (culvert pipes, circular section) and Type II (culvert pipes, other than circular section) of AASHTO M 36 amended as follows:
1.Pipe and pipe arch shall be galvanized in accordance with AASHTO M 218.
2.Elbows, tees, and other in-line fittings shall be fabricated from sheets of the same thickness and coating material as the pipe or pipe arch to which they are joined. Flared end sections shall be as specified.
3.Shop-formed elliptical pipe and shop-strutted pipe shall be furnished when specified.
4.For helical pipe, no coil splices at pipe manufacturing plants will be allowed for pipe 30 inches in diameter or less.
5.Helical pipe shall have annular ends and shall have the ends of seams welded a min imum of 2 inches. Helical pipe ends shall be rerolled a minimum of two full standard corrugations to the same corrugation depth as the pipe when used with the appropriate jointing system.
6.Pipe arch dimensions shall comply with AASHTO M 245 and Table 1007-1 of this section.
7.A minimum of two approved lifting lugs shall be provided on pipe larger than 30 inches in diameter, pipe arch larger than 30 inches in equivalent diameter, and any diameter of pipe or pipe arch longer than 30 feet.
8.Damaged metallic coating shall either be recoated or shall be repaired with a cold galvanizing repair compound from the Approved Materials List.
1007.02 Bituminous Coated Corrugated Steel Pipe
AND PIPE ARCH. These conduits shall be coated in accordance with AASHTO M 190 amended as follows:
1.AASHTO M 36 is amended in accordance with 1007.01
2.Coating shall be Type A, fully bituminous coated.
1007.03 Bituminous Coated Corrugated Steel
UNDERDRAIN PIPE. Pipe and coupling bands shall comply with the requirements of Type III (underdrain pipes) of AASHTO M 36. The pipe shall be coated with a bituminous material in accordance with AASHTO M 190, Type A coating, except the minimum coating thickness shall be 0.03 inch The specified minimum diameter of perforations shall apply after coating. Minimum sheet thickness shall be 0.064 inch (16 gage).
1007.04 Structural Plate for Pipe, Pipe Arch and
ARCH. Comply with AASHTO M 167 for steel, and AASHTO M 219 for aluminum.
1007.05 Corrugated Aluminum Pipe and Pipe Arch.
Comply with AASHTO M 196 with the following exceptions:
1.Helical pipe shall have annular ends and shall have the ends of seams welded a minimum of 2 inches. Helical pipe ends s hall be rerolled a minimum of two full standard corrugations to the same corrugation depth as the pipe when used with the appropriate jointing system.
2.Pipe arch dimensions shall comply with Table 1007-1.
3.A minimum of two approved lifting lugs shall be provided on pipe larger than 30 inches diameter, pipe arch larger than 30 inches equivalent diameter, and any diameter of pipe or pipe arch longer than 30 feet.
4.Aluminum alloy sheet used in fabricating pipe shall conform to the applicable requirements of AASHTO M 197 for Alclad Alloy 3004-H34 for annular pipe, and Alclad Alloy 3004-H32 for helical pipe.
1007.06 CORRUGATED ALUMINUM UNDERDRAIN PIPE. Pipe
and coupling bands shall comply with the requirements of Type III (underdrain pipes) of AASHTO M 196. Minimum sheet thickness shall be 0.060 inch (16 gage).
1007.07 PIPE ARCH DIMENSIONS. Pipe arch dimensions shall
comply with Table 1007-1. Pipe arch tolerances shall comply with the plans. Table 1007-1 Metal Pipe Arch Dimensions (Inches) Steel & Aluminum Steel Round Equivalent (Inches) 2 2/3 in. by 1/2 in. Corrugation 3 in. by 1 in. or 5 in. by 1 in. Corrugation 17 x 13 21 x 15 24 x 18 28 x 20 35 x 24 42 x 29 49 x 33 57 x 38 64 x 43 71 x 47 77 x 52 83 x 57 — — — — — — — — — — — — — 40 x 31 46 x 36 53 x 41 60 x 46 66 x 51 73 x 55 81 x 59 87 x 63 95 x 67 103 x 71 112 x 75 117 x 79 128 x 83 137 x 87 142 x 91
1007.08 PIPE JOINT SYSTEMS. Metal pipe joint systems shall
comply with 1018.03 and shall be as shown on the plans. A Type 2 or 3 joint system may be substituted for a Type 1 joint system; a Type 3 joint system may be substituted for a Type 2 joint system. For Type 1 joints, provide at least one line of approved gasket material under the band on each pipe end.
1007.08.1 Coupling Bands: Coupling bands for joining metal
conduit shall be approved by the DOTD Materials Engineer Administrator and shall comply with AASHTO M 36 for steel conduit and AASHTO M 196 for aluminum conduit with the following modifications: Bands shall be of an approved design and shall be fabricated from metal sheets of the same material as the conduit. The band thickness shall be the same as the conduit thickness with a maximum of 12 gage. Coating shall be the same as used on the conduit. Minimum band width shall be 12 inches.
1007.08.2 Steel Banding Rods: Comply with AASHTO M 270,
Grade 36 (M 270M, Grade 250). Welding of rods will not be permitted. No more than two splices will be allowed.
1007.08.3 Hardware: Hardware shall be galvanized in accordance
with ASTM A153 or B633, Class Fe/Zn 25 or an approved mechanical galvanizing process complying with ASTM B695 that provides the same coating thickness.
1007.08.4 Gaskets: Gaskets for pipe joint systems shall be from the
Approved Materials List.
1007.08.4 1 Rubber Gaskets: Comply with ASTM
C443. Each rubber gasket shall be identified with a batch or lot number. Gasket cross section shall be the following: For pipe 36 inches in diameter or less, gasket cross section shall be 13/16-inch. For pipe greater than 36 inches in diameter, with 1/2 -inch deep corrugations, gasket cross section shall be 7/8-inch. For pipe greater than 36 inches in diameter with 1-inch deep corrugations, gasket cross section shall be 1 3/8-inches.
1007.08.4 2 Preformed Flexible Gaskets: Comply with
ASTM C990. Gasket material shall be a minimum of 1 inch for 1/2-inch corrugation depth, and a minimum of 1 1/2 inches for 1-inch corrugation depth.
1007.09 CAST IRON SOIL PIPE AND FITTINGS. Comply with
ASTM A74. Joints shall be made with rubber gaskets complying with ASTM C564.
1007.10 DUCTILE IRON PIPE. Comply with ANSI A 21.51.
1007.11 Black and Galvanized Welded and Seamless
STEEL PIPE. Steel pipe for ordinary uses shall comply with ASTM A53.
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Source: Standard Specifications for Roads and Bridges, 2016 Edition. Pages 1042–1045 of 1,145. View official source ↗