846PIPE CULVERT JOINT SEALERS

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degrees nor less than 155 degrees. The bottom shall be an arc of not more than 50 degrees nor less than 10 degrees. The top shall be joined at each end to the bottom by an arc having a radius between 16 and 32 inches {400 and 800 mm} and of not more than 87½ degrees nor less than 75 degrees.

841.02Corrugated Steel

Corrugated steel structural plates, fasteners, etc. shall conform to the requirements of AASHTO M 167, with plates hot-dipped galvanized after fabrication, punching, and cutting.

841.03Corrugated Aluminum

Corrugated aluminum structural plates, fasteners, etc. shall conform to the requirements of AASHTO M 219 modified to include the following: Bolt holes along those edges of the plates that will form longitudinal seams in the finished structure shall be on a double row with center to center dimension 1.75 inches {45 mm}. In all structures the longitudinal joint shall be composed of two bolts in the valley and crest of each corrugation. Bolt holes along those edges of the plates that will form circumferential seams in the finished structure shall provide for a bolt spacing of not more than 9.625 inches {245 mm}. The minimum distance from center of hole to edge of plate shall be not less than 1.75 times the diameter of the bolt.

841.04Bituminous Coatings and Paved Inverts

Bituminous coatings shall be in accordance with the provisions of Subarticle 850.02(c); however, field coatings may be applied in accordance with the provisions of AASHTO M 243. Paved inverts shall be in accordance with the provisions of Subarticle 850.02(c); however, field application may be accomplished using the asphalt mastic noted in AASHTO M 243, applied as noted therein to the depth and width required by Subarticle 850.02(c).

841.05Handling and Storage

Handling and storage of plates shall be as specified in Subarticle 850.02(f) for pipe. Any spelter damaged in handling shall be painted with two coats of approved galvanizing repair paint, Section 855, or an approved zinc spelter paint. PIPE CULVERT JOINT SEALERS

846.01Rigid Pipes

Allowable joint materials will be determined based on the shape of the pipe culvert as given in the table below. Pipe Culvert Shape Allowable Joint Materials Round Rubber Gasket Arch, Horizontal Elliptical, and Precast Culverts Rubber Gasket, Bituminous Plastic Cement, or Preformed Flexible Joint Sealant Note: The joint sealing material requirements of this specification are provided to ensure the installed pipe joints provide a soil tight performance. If a more stringent joint performance requirement is deemed necessary during the design phase, the Engineer may specify other materials or a different combination of materials specified above.

Bituminous Plastic Cement meeting the Specifications noted in this Section may be used on joints for Arch and or Horizontal Elliptical Pipe and Precast box culverts. This Specification covers a bituminous joint sealing compound which may be applied cold for sealing the joints of bell and spigot or tongue and groove storm or culvert pipe. Material furnished shall be composed of a steam-refined petroleum asphalt dissolved in a suitable solvent and stiffened with a mineral filler. Properties: The Bituminous Plastic Cement shall be a smooth uniform mixture, not thickened or livered, and it shall show no separation which cannot be easily overcome by stirring. The material shall be of such consistency and properties that it can be readily applied with a trowel, putty knife, or ROADWAY PIPE 724

caulking compound gun without pulling or drawing. When applied to the joint surfaces, it shall exhibit good adhesive and cohesive properties. The material shall meet the following requirements:

and cured at room temperature for 24 hours, the Bituminous Plastic Cement shall set to a tough, plastic coating, free from blisters. Minimum Maximum

Tests: Methods of tests shall be in accordance with the following: Grease Cone Penetration AASHTO T 187 Non-Volatile ASTM D 2939 Ash ASTM D 128

Preformed Flexible joint sealant meeting the requirements of this Section may be used on joints for Arch and or Horizontal Elliptical Pipe and Precast box culverts. This material shall meet the latest requirements of ASTM C990 “Standard Specification for Joints for Concrete Pipe, Manholes, and Precast Box Sections Using Preformed Flexible Joint Sealants”. The material shall be installed per the manufacturer’s recommendations.

Rubber gaskets shall be used on all round pipe joints. This material shall meet the latest requirements of ASTM C443 “Standard Specification for Joints for Concrete Pipe and Manholes Using Rubber Gaskets”. The material shall be installed per the manufacturer’s recommendations including gasket equalization and application of lubricant.

External wrap joint sealant meeting the Specifications noted in this Section may be used in addition to and combination with joint material as specified in Subarticle (a) above. This material if or when used shall meet the latest requirements of ASTM C877 “Standard Specification for External Sealing Bands for Concrete Pipe, Manholes, and Precast Box Sections”. The material shall be installed per the manufacturer’s recommendations. Other types of joint sealers or gaskets with proven satisfactory performance records may be considered by the Department for use on individual contracts on a trial basis.

846.02Flexible Pipe Sealers

Connecting bands complying with the appropriate provisions of the type pipe being used may be considered as a satisfactory sealer provided the installation method provides a water tight joint for the full circumference of the joint, unless otherwise directed. Where a satisfactory joint seal cannot be obtained using only the connecting band, the joint shall be sealed by the use of gaskets designed for this purpose, mastic or other approved material. The producer of the sealant used in the joints shall furnish the Engineer with a certification showing the physical properties of the material and hydrostatic tests of joints sealed with his material.

If special joints or sealers are required, such will be designated by plan details. ROADWAY PIPE

850.01Concrete Pipe

Concrete pipe shall be reinforced circular or reinforced arch concrete pipe. ROADWAY PIPE 725

Circular concrete pipe shall comply with the requirements of AASHTO M 170, except that elliptical steel reinforcement will not be permitted unless such is permitted for special design pipe by details provided in the plans. Concrete arch pipe shall comply with the requirements of AASHTO M 206.

When so permitted by the plans or in the proposal, pipe of designs other than those shown in the standard plans may be permitted; however, such pipe must meet performance and test requirements specified in AASHTO M 170 and shall be installed under the same specifications as circular pipe.

Circular pipe and arch pipe shall be of the following classes, corresponding to AASHTO M 170 or AASHTO M 206 classes as tabulated herein. AASHTO CLASS ALDOT CLASS ABBREVIATION Class II Class 2 Reinf. Conc. Pipe Cl. 2 R.C. Pipe Class III Class 3 Reinf. Conc. Pipe Cl. 3 R.C. Pipe Class IV Class 4 Reinf. Conc. Pipe Cl. 4 R.C. Pipe Class V Class 5 Reinf. Conc. Pipe Cl. 5 R.C. Pipe Class II Class 2 Reinf. Conc. Arch Pipe Cl. 2 R.C. Arch Pipe Class III Class 3 Reinf. Conc. Arch Pipe Cl. 3 R.C. Arch Pipe Class IV Class 4 Reinf. Conc. Arch Pipe Cl. 4 R.C. Arch Pipe

Coarse aggregate, fine aggregate, cement, steel reinforcement, and water shall meet the requirements of AASHTO M 170 or M 206, whichever is applicable, except as modified in applicable Sections of Division 800, Materials.

All precast products furnished shall meet the requirements of Section 831.

Pipe shall be handled, transported, delivered, and stored in a manner that will not injure or damage the pipe. Pipe shall not be shipped before it has been inspected and approved. Pipe that is damaged during shipment or handling will be rejected even though satisfactory before shipment. Pipe dropped from platforms or vehicles or in the pipe trench will be rejected. Pipe will be evaluated at delivery and any time prior to installation according to the criteria in AASHTO R 73.

850.02Corrugated Steel Pipe

Corrugated steel pipe used in the construction of roadway culverts shall be either circular or arch pipe meeting the requirements of AASHTO M 36, for Type I, IR, or II culverts, the requirements noted in this Section, and the details shown in the plans. The pitch and depth of corrugations allowed by the AASHTO Specifications but not covered by plan details must be approved by the Department before use. Acceptance of pipe will be based on job site inspection for workmanship and compliance with fabrication requirements. A certificate of compliance for each shipment as per AASHTO M 36 will not be required; however, a copy of the manufacturer's analysis of the sheets used in the manufacture of the pipe will be furnished. Corrugated steel roadway pipe shall have a protective coating and in most cases requires a paved invert. Certain secondary roads may use plain galvanized steel pipe. A paved invert will not be required in a Type IR pipe unless needed for abrasion resistance. When such is the case, the requirement for a paved invert in a Type IR pipe will be shown on the plans.

All pipes furnished under this Section shall be fabricated with circumferential corrugations and a riveted lap joint, or with helical corrugations and a continuous lock seam or welded seam, or helical ribs projecting outwardly with a continuous lock seam extending from end to end of each length of pipe. In addition, helical corrugated or helical ribbed pipe shall comply with the following: ROADWAY PIPE 726

corrugations or ribs and as near as practical to the neutral axis of the corrugations or mid-point between ribs, for all sizes without perforations. The seam shall be so designed and fabricated as to develop strength and serviceability equal to that of riveted pipe of the same wall thickness.

and as near as practical to the neutral axis of the corrugations. The welding process shall be so controlled that the combined width of the weld and the adjacent spelter coat burned by the welding operation shall not exceed three times the thickness of the metal being joined. If the spelter is damaged outside the above specified width, the weld and the damaged area adjacent to the weld shall be cleaned and treated as required by the appropriate Article of AASHTO M 36. A coating of rust on the base metal portions of the weld is not considered a defect. The welding process shall be such that the welded seam strength shall not be less than 70 percent of the base metal. The manufacturer of welded seam pipe shall submit a certified test report of his production testing that shows the production will meet the above noted weld strength requirements. One test will be reported for each day's production run with the test performed on the final joint produced for that day.

with coupling bands shall be reformed to provide a minimum of two standard size circumferential corrugations.

Protective coating for corrugated metal round and arch pipe shall meet one of the requirements noted in this Article. Concrete linings for corrugated steel round pipe shall meet the requirements specified in Subarticle (d) of this Article. Paved inverts shall be formed by the addition of a smooth pavement in the invert of the pipe filling the corrugations for at least 25% of the circumference for a round pipe and 40% for an arch pipe. The pavement shall have a minimum thickness of 1/8 of an inch {3 mm} above the crest of the corrugations, except where the upper edges intersect the corrugations. In addition the following will be required for the manufacturer of each length of coated pipe shipped to a project:

with duct tape for identification. This covered section shall include the heat number and metal thickness.

personnel.

and tested by the Central Laboratory.

Bituminous coating shall meet the requirements of AASHTO M 190 for Type "A" Pipe. Polymeric coatings on precoated metal sheets meeting the requirements of AASHTO M 246 for Type "B" sheets may be used provided the pipe is fabricated so that the heavier coating is located on the inside of the pipe.

Paved inverts for bituminous coated pipe shall conform to the requirements of AASHTO M 190 for Type "C" Pipe. Paved inverts for pipe formed from precoated metal sheets shall be compatible with the coating material, capable of providing an acceptable bond with coating material and otherwise meeting the same basic test requirements of Section 5 of AASHTO M 190.

Concrete lined pipe shall be bituminous coated on the outside as outlined in Item 2 above. Although not required, bituminous coating of the inside of the pipe will be permitted. Concrete for the lining shall be composed of cement, fine aggregate, and water that are well mixed and of such consistency as to produce a dense, homogeneous, non-segregated lining. The cement shall be Portland cement, Type II, conforming to AASHTO M 85. Aggregate shall conform to the requirements of AASHTO M 6 except the sections on gradation and uniformity of gradation.