841.05 Handling and Storage.
841.05 Handling 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
846.01 Rigid Pipes.
a.General . 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 insure 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.
b.Bituminous Plastic Cement. Bituminous Plastic Cement meeting the Specifications noted in this Sectio n 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 cu lvert 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 caulking compound gun without pulling or drawing. W hen applied to the joint surfaces, it shall exhibit good adhesive and cohesive properties. The material shall meet the following requirements:
1.When applied in a layer 1/16 to 1/8 inch {1.5 mm to 3 mm} thick on a tinned metal panel and cured at room temp erature for 24 hours, the Bituminous Plastic Cement shall set to a tough, plastic coating, free from blisters. Minimum Maximum
2.Grease Cone Penetration 175 250
3.Unit Weight {Unit Mass}, pounds per gallon {kilograms per liter} 9.75 {1.17} -
4.Non-Volatile 70 -
5.Ash, by ignition, by weights {masses} 15 45 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
c.Preformed Flexible Joint Sealant 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.
850.01 Concrete Pipe.
d.Rubber Gaskets . 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.
e.Other Types of Jo int Sealers . 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 satisfactor y performance records may be considered by the Department for use on individual contracts on a trial basis.
846.02 Flexible Pipe Sealers.
a.General . 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.
b.Special Joints . If special joints or sealers are required, such will be designated by plan details. SECTION 850 ROADWAY PIPE
850.01 Concrete Pipe.
a.General . Concrete pipe shall be reinforced circular or reinf orced arch concrete pipe. 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. Concret e arch pipe shall comply with the requirements of AASHTO M 206.
b.Special Design . 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 a nd test requirements specified in AASHTO M 170 and shall be installed under the same specifications as circular pipe.
c.Classes of 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
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 767–767 of 934.