M 41-10 Page 7-3 Culvert Pipe 7-027-02 Culvert Pipe
7-02.1 Description
This Work consists of constructing culvert pipes of the various types and classes in accordance with the Plans, these Specifications, and the Standard Plans , at the locations staked. Culvert pipes may be used for transverse drains under the Roadway or as conduits for water pipe or other utilities passing under the Roadway.
7-02.2 Materials
Materials shall meet the requirements of the following sections: Cement 9-01 Aggregates for Concrete 9-03.1 Gravel Backfill for Pipe Zone Bedding 9-03.12(3) Butyl Rubber Sealant 9-04.11 External Sealing Band 9-04.12 Plain Concrete Culvert Pipe 9-05.3(1 ) Reinforced Concrete Culvert Pipe 9-05.3(2) Mitered Concrete End Sections 9-05.3(3) Steel Culvert Pipe and Pipe Arch 9-05.4 Steel Nestable Pipe and Pipe Arch 9-05.4(8) Steel End Sections 9-05.4(9) Aluminum Culvert Pipe 9-05.5 Aluminum End Sections 9-05.5(6) Solid Wall PVC Culvert Pipe 9-05.12(1) Profile Wall PVC Culvert Pipe 9-05.12(2) Corrugated Polyethylene Culvert Pipe 9-05.19 Steel Rib Reinforced Polyethylene Culvert Pipe 9-05.21 High-Density Polyethylene (HDPE) Pipe 9-05.23 Polypropylene Culvert Pipe 9-05.24 Steel Reinforcing Bar 9-07.2 Epoxy-Coated Steel Reinforcing Bar 9-07.3 Welded Wire Reinforcement 9-07.7 Deformed Wire 9-07.8 Cold Drawn Wire 9-07.9 Grout 9-20.3(2) Mortar 9-20.4 Concrete Curing Materials and Admixtures 9-23 Where steel or aluminum are referred to in this section in regard to a kind of culvert pipe, pipe arch, or end sections, it shall be understood that steel is zinc coated (galvanized) or aluminum coated (aluminized) corrugated iron or steel, and aluminum is corrugated aluminum alloy as specified in Sections 9-05.4 and 9-05.5 . Thermoplastic culvert pipe includes solid wall PVC culvert pipe, profile wall PVC culvert pipe, corrugated polyethylene culvert pipe, steel rib reinforced polyethylene culvert pipe, high-density polyethylene (HDPE) pipe, and polypropylene culvert pipe. It is not necessary that all culvert pipe on any one project be of the same kind of material. However, all contiguous pipe shall be of the same size, material, thickness, class, and treatment and shall be that required for the maximum height of cover. Measurement for payment of the Bid items associated with the drainage installation will be based on the diameter of the culvert pipe described by the Bid item in the Proposal. Page 7-4 M 41-10
7-02 Culvert PipeWhen schedule A, B, C, or D culvert pipe is specified in the Plans, the Contractor shall
provide the specified schedule and diameter but has the option of furnishing any of the acceptable materials shown in the Culvert Pipe Schedules Table. The use of tongue and groove concrete pipe shall only be allowed under side road connections. All tongue and groove pipe shall be joined with cement mortar or butyl rubber sealant. Culvert Pipe Schedules Schedule (Fill Height)Diameter in inches ConcreteSteel 2⅔″ × ½″Aluminum 2⅔″ × ½″Thermoplastic PE1, PVC2, or PP3 A 2′ - 15′12, 18, 24 Class III .064″ (16 Ga.) .060″ (16 Ga.) PE, PVC, or PP 30, 36 Class III .064″ (16 Ga.) .075″ (14 Ga.) PE, PVC, or PP 42, 48 Class III .064″ (16 Ga.) .105″ (12 Ga.) PE, PVC, or PP B 15′ - 25′12, 18, 24 Class V .064″ (16 Ga.) .060″ (16 Ga.) PE, PVC, or PP 30, 36 Class IV .064″ (16 Ga.) .075″ (14 Ga.) PE, PVC, or PP 42, 48 Class IV .064″ (16 Ga.) .105″ (12 Ga.) PE, PVC, or PP C 25′ - 40′12, 18, 24 Class V .064″ (16 Ga.) .060″ (16 Ga.) None 30, 36 Class V .064″ (16 Ga.) .075″ (14 Ga.) None 42, 48 Class V .064″ (16 Ga.) .105″ (12 Ga.) None D 40′ - 60′12, 18 None .064″ (16 Ga.) .060″ (16 Ga.) None 24 None .064″ (16 Ga.) .075″ (14 Ga.) None 30, 36 None .064″ (16 Ga.) .105″ (12 Ga.) None 42, 48 None .079″ (14 Ga.) .135″ (10 Ga.) None 1Corrugated polyethylene pipe. 2Polyvinyl chloride pipe. Solid wall or profile wall for diameters through 27 inches Profile wall for diameters larger than 27 inches. 3Polypropylene pipe, 12 inch to 30 inch diameters approved for Schedule A and Schedule B, and 36 inch to 60 inch diameters approved for Schedule A only.
7-02.3 Construction Requirements
Culvert pipes shall be constructed in accordance with Section 7-08.3 .
7-02.3(1) Placing Culvert Pipe – General
A dike or plug of impervious material shall be placed near the intake end of the culvert pipe to prevent piping. The dike shall be 2 feet long and adequately surround the pipe to form an impervious barrier. When suitable impervious materials are not available at the site, suitable backfill shall be obtained as provided in Section 2-09.3(1)E . The ends of the pipe or pipe arch shall be rigidly supported to prevent movement before and during the construction of end walls or headers. Culvert pipes shall not be left extending beyond the staked limits unless approved by the Engineer. For pipes 30-inches and less in diameter, the ends shall be mitered in accordance with the Standard Plans . M 41-10 Page 7-5 Culvert Pipe 7-027-02.3(2) Installation of Metal End Sections Metal end sections shall be installed in accordance with the requirements of the Standard Plans , the Plans, and applicable portions of these Specifications. When flared metal end sections are installed on concrete pipe, Design B end sections will be used on the inlet end only. Design C end sections will be used on the outlet ends only according to the following schedule: Concrete Pipe Nominal Dia. in inchesEnd Section Nominal Dia. in inches 12 15 18 24 24 30 30 36 36 42 42 48 48 60 54 66 60 72 66 78 72 84
7-02.3(3) Headwalls
If headwalls are specified in the Plans, they shall be constructed as soon as the embankment has been completed to a sufficient height over the Structure to allow the required Work. Headwalls shall be constructed in accordance with applicable portions of Section 6-02 .
7-02.3(4) Removing and Relaying Culvert Pipes
Where shown in the Plans or where designated by the Engineer, existing culvert pipes shall be removed and relaid in accordance with these Specifications. All culvert pipe damaged by the Contractor’s operations shall be replaced by the Contractor at no expense to the Contracting Agency. In the case of concrete pipe, all joints of the pipe before being relaid shall be cleaned so as to be free from all adhering material, including old mortar placed as a collar or seal in the original construction. All culvert pipe sections removed and not relaid shall become the property of the Contractor.
7-02.3(5) Safety Bars for Culvert Pipe
When shown in the Plans, safety bars for culvert pipe shall be constructed in accordance with the Standard Plans and shall meet the requirements of Section 9-05.18 .
7-02.4 Measurement
The length of culvert pipe or pipe arch will be the number of linear feet of completed installation measured along the invert. Mitered end sections will be considered as part of the culvert pipe and shall be measured as culvert pipes. Flared end sections will be measured by each completed end section. The pipe connector section of end section Design A shall be fabricated as a part of the integral unit of the end section but will be measured as linear feet of pipe or pipe arch of the treatment, thickness and dimensions of pipe to which it is attached. If there is no Bid Page 7-6 M 41-10
7-02 Culvert Pipeitem for pipe of the proper dimensions for the end sections, the pipe connector sections
will be considered as part of the integral unit and will not be measured as pipe. The length of safety bars for culvert pipe will be the number of linear feet of each safety bar installed. Tapered end section with safety bars will be measured by the unit per each.
7-02.5 Payment
Payment will be made for each of the following Bid items that are included in the Proposal: “Schedule ____ Culv. Pipe ____ In. Diam.”, per linear foot. “Plain Conc. Culv. Pipe ____ In. Diam.”, per linear feet. “Cl. ____ Reinf. Conc. Culv. Pipe ____ In. Diam.”, per linear foot. “Plain St. Culv. Pipe ____ In. Th. ____ In. Diam.”, per linear foot. “Tr. ____ St. Culv. Pipe ____ In. Th. ____ In. Diam.”, per linear foot. “Plain St. Culv. Pipe Arch ____ In. Th. ____ In. Span”, per linear foot. “Tr. ____ St. Culv. Pipe Arch ____ In. Th. ____ In. Span”, per linear foot. “Plain Nestable St. Pipe ____ In. Th. ____ In. Diam.”, per linear foot. “Tr. ____ Nestable St. Pipe ____ In. Th. ____ In. Diam.”, per linear foot. “Plain Al. Culv. Pipe ____ In. Th. ____ In. Diam.”, per linear foot. “Plain Al. Culv. Pipe Arch ____ In. Th. ____ In. Span”, per linear foot. “Relaying (type of Pipe and Size)”, per linear foot. “Solid Wall PVC Culv. Pipe ____ In. Diam.”, per linear foot. “Profile Wall PVC Culv. Pipe ____ In. Diam.”, per linear foot. “Corrugated Polyethylene Culv. Pipe ____ In. Diam.”, per linear foot. “St. Rib Reinf Polyethylene Culv. Pipe ____ In. Diam.”, per linear foot. “High-Density Polyethylene (HDPE) Pipe ____ In. Diam.”, per linear foot. “Polypropylene Culvert Pipe ____ In. Diam.”, per linear foot. Where culvert pipes are to be removed but are not to be relaid, all costs in connection with the removal shall be included in the unit Contract price per cubic yard for “Structure Excavation Class B” or “Structure Excavation Class B Incl. Haul”. “Flared End Section ____ In. Diam.”, per each. “Flared End Section ____ In. Span”, per each. “Safety Bars for Culvert Pipe Type ____”, per linear foot. “Tapered End Sect. with Type ____ Safety Bars ____ In. Diam.”, per each.