SECTION 709 - METAL PIPE
709.01 Cast Iron Culvert Pipe. Cast iron culvert pipe shall conform to ASTM A 716,
for the wall thicknesses set out in the Tables, or as specified on the plans.
709.02 Corrugated Metal Culvert Pipe and Pipe Arches . All corrugated metal pipe
and arches covered in these specifications shall conform to AASHTO M 36, except the minimum gauge thickness shall be as shown on the plans or in the contract; however, corrugated metal pipe manufactured from sheets thicker than that specified will be acceptable when approved by the Engineer. The internal diameter of corrugated metal pipe will be determined by inside measurement between the crests of the corrugations. Corrugations greater than 3" x 1" will not be allowed in arch pipe.
709.02.1 Aluminized Corrugated Metal Culvert Pipe and Pipe Arches. All
aluminized metal pipe and arches shall be manufactured from Type 2 corrugated metal pipe and arches in accordance with the requirements of Subsection 709.02.
709.03 Bituminous Coated Corrugated Metal Pipe and Pipe Arches.
709.03.1 Materials. Bituminous coated corrugated metal pipe and arches shall conform
to the requirements of AASHTO M 190 and be completely coated inside and out with an asphalt cement that meets the performance requirements hereinafter. The pipe shall be coated uniformly to a minimum thickness of 0.05 inch, measured on the crest of the corrugations. The asphalt cement used shall be at least 99.5% soluble in carbon disulfide.
709.03.2 Performance Requirements. The asphalt cement shall adhere to the metal
tenaciously, shall not chip off in handling, and shall protect the pipe from deterioration as evidenced by successfully withstanding the following tests:
709.03.2 1--Stability Test . Parallel lines shall be drawn along the valleys of the
corrugations of a representative sample of coated pipe and the specimen placed on end in a constant-temperature oven with the parallel lines in a horizontal position. The temperature of the specimen shall be main tained at a temperature of l50±2°F for a period of four hours. At the end of this time, no part of any line shall have dropped more than 1/4 inch.
709.03.2 2--Imperviousness Test. The asphalt cement shall be impervious to liquids as
indicated by the following tests: 25 to 50 milliliters of a 25% water solution of sulfuric acid and of a 25% water solution of sodium hydroxide shall be placed in separate corrugations for a period of 48 hours, during which time no loosening or separation of the bituminous material from the metal shall have taken place.
709.04 Bituminous Coated Paved Invert Corrugated Metal Pipe and Arches .
Bituminous coated corrugated metal pipe and arches with paved invert shall conform to the requirements of Subsection 709.03. In addition, bituminous material shall be applied in such a manner that a smooth pavement will result in the invert (bottom of pipe when installed) for 1/4 of the circumference of circular pipe and 40% of the circumference of pipe arches. The pavement, except where the upper edges intersect the corrugations, shall have a minimum thickness of 1/8 inch above the crest of the corrugations.
709.05 Polymer Coated Corrugate d Metal Pipe and Pipe Arches . Polymer coated
corrugated metal pipe and arches shall conf orm to the requirements of AASHTO M 245, except the minimum gauge thickness shall be as shown on the plans or in the contract; however, corrugated metal pipe manufactured from sheets thicker than that specified will be acceptable when approved by the Engineer. The internal diameter of corrugated metal pipe will be determined by inside measurem ent between the crests of the corrugations. Corrugations greater than 3" x 1" will not be allowed in arch pipe. The polymer precoated sheet shall be Type B with a minimum coating thickness of 0.010 inches or 0.25 millimeters on both surfaces.
709.06 Corrugated Metal Pipe for Underdrains. Corrugated metal pipe shall conform
to AASHTO M 36, Type III. Type I pipe that has been perforated to permit the in-flow or out-flow of water may be used in lieu of Type III pipe.
709.06.1 Aluminized Corrugated Me tal Culvert Pipe for Underdrains. A l l
aluminized corrugated metal pipe for underdrains shall be manufactured from Type 2 corrugated metal pipe and arches in accordance with the requirements of AASHTO M 36, Type III. Manufacturer must repair any damaged coating caused from perforating the pipe.
709.07 Bituminous Coated Corrug ated Metal Pipe for Underdrains . Bituminous
coated corrugated metal pipe shall conform to the requirements of AASHTO M 190, Type A with a bituminous coating applied in accordance with the requirements of Subsection
709.03 Manufacturer must repair any damaged coating caused from perforating the pipe.
709.08 Polymer Coated Corrugated Metal Pipe for Underdrains. The metal pipe for
underdrains shall conform to the requirements of AASHTO M 245, Type III and the polymer coating shall conform to the requirements of Subsection 709.05. Type I pipe that has been perforated to permit the in-flow or out-flow of water may be used in lieu of Type III pipe. Manufacturer must repair any damaged coating caused from perforating the pipe.
709.09 Corrugated Aluminum Alloy Culvert Pipe and Arches. Corrugated aluminum
culvert pipe and arches shall conform to the requirements of AASHTO M l96, Type IA. Minimum thickness of sheets shall be as indicated on the plans or in the special provisions.
709.10 Corrugated Aluminum Alloy Pipe for Underdrains . Corrugated aluminum
pipe underdrains shall conform to the requirements of AASHTO M 196, Type III. Type I pipe that has been perforated to permit the in-flow or out-flow of water may be used in lieu of Type III pipe.
709.11 Bituminous Coated Corrugated Aluminum Alloy Culvert Pipe and Arches .
Bituminous coated aluminum culvert pipe and arches shall conform to AASHTO M 196, Type IA, and in addition shall be coated inside and out as specified in Subsection 709.03. Manufacturer must repair any damaged coating caused from perforating the pipe.
709.12 Bituminous Coated Paved Invert Corrugated Aluminum Alloy Culvert Pipe
and Arches. Bituminous coated corrugated aluminum culvert pipe and arches with paved invert shall conform in every respect to the requirements of Subsection 709.09 and, in addition, to the requirements of Subsection 709.04 for paved invert.
709.13 Bituminous Coated Corrugated Aluminum Alloy Pipe for Underdrains. This
pipe shall conform to AASHTO M 196, Type III, and shall be coated with bituminous material conforming to AASHTO M 190, type co ating as specified. Manufacturer must repair any damaged coating caused from perforating the pipe.
709.14 Structural Plate for Pipe, Pipe Arches, and Arches. These conduits and bolts
and nuts for connecting plates shall conform to AASHTO M 167.
709.15 Full Bituminous Coated Structural Plate Pipe, Pipe Arches, and Arches .
These conduits shall conform to AASHTO M 167 and shall be coated with bituminous material conforming to AASHTO M 190, type coating as specified.
709.16 Aluminum Alloy Structural Plate for Pipe, Pipe Arches, and Arches . These
conduits and the bolts and nuts for connecting plates shall conform to AASHTO M 219.
709.17 Full Bituminous Coated Aluminum Alloy Structural Plate Pipe, Pipe Arches
and Arches. These conduits shall conform to AA SHTO M 219 and shall be coated with bituminous material conforming to AASHTO M 190, type coating as specified.
709.18 Special Sections . Any special sections, such as elbows, flared end sections,
branch connections, or other specified appurtenances shall be of the same base metal, size, type, fabrication, coating, invert, and other ap plicable requirements as for the particular type of pipe to which it is joined. Each elbow shall be not less than the following length: Angle - Up to Minimum Diameter and Including Overall Length 6-inch to 48-inch 22½ 24 inches 54-inch to 84-inch 22½ 48 inches 6-inch to 36-inch 45 24 inches 42-inch to 84-inch 45 48 inches 6-inch to 24-inch 60 24 inches 30-inch to 60-inch 60 48 inches 66-inch to 84-inch 60 72 inches 6-inch to 15-inch 90 24 inches 18-inch to 36-inch 90 48 inches 42-inch to 60-inch 90 72 inches 66-inch to 84-inch 90 96 inches Other details shall be as shown on the plans. All three-piece corrugated metal end sections shall have 12 gauge minimum thickness sides and 10 gauge minimum thickness center panels. Width of center panels shall be greater than 20 percent of the pipe periphery. Multiple panel bodies shall have lap seams tightly joined by three-eighths inch diameter galvanized rivets or bolts. For 60-inch thru 84-inch sizes, reinforced edges shall be supplemented with galvanized stiffener angles. The angles shall be two inches by two inches by one-quarter inch for 60-inch thru 72-inch diameters and two and one-half inches by two and one-half inches by one-quarter inch for 78-inch and 84-inch diameters. The angles shall be attached by three-ei ghths inch diameter galvanized nuts and bolts. For the 79-inch by 49-inch and 85-inch by 54-inch sizes, reinforced edges shall be supplemented by galvanized stiffener angles that are two inches by two inches by one-quarter inch. Angle reinforcement shall be placed under the center panel seams on the 79-inch by 49-inch and 85-inch by 54-inch sizes. A toe plate of the same materials as the end section shall be fu rnished and installed on each end section, unless deemed by the Engineer to be unnecessary for the particular location.
709.19 Steel Pipe and Steel Pipe Encasements . Steel pipe shall conform to the design
and dimensions shown on the plans, and materials shall meet the requirements hereinafter specified. Steel pipe with a nominal diameter of less than six inches shall meet the requirements of ASTM A 53, Type E or F, Grade A, Black, Schedule 40. Steel pipe with nominal diameter of six inches or more shall meet the requirements of ASTM A 139, Grade A unless otherwise specified, Welded, Black, for the wall thicknesses set out in the Tables, or as specified on the plans. Steel pipe with a nominal diameter greater than 24 inches shall be as specified on the plans. Unless otherwise indicated on the plans, steel pipe ends shall be factory beveled for welding. The Contractor shall furnish the St ate Materials Engineer the original and three copies of the Mill Certificate of Compliance for all materials furnished.
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