Category:1028 Corrugated Polyvinyl Chloride Culvert Pipe

This article establishes procedures for inspecting, acceptance and reporting of polyvinyl chloride (PVC) culvert pipe. . Refer to Sec 1028 for MoDOT’s specifications. Field inspection shall be performed using the Corrugated Polyvinyl Chloride (PVC) Pipe Inspection Guide. For Laboratory testing and sample reporting procedures, refer to Laboratory Testing Guidelines for Sec 1028.

1028.1 Apparatus

(a) Rule with suitable gradations to accurately measure the material to be inspected.

(b) Micrometer capable of measuring to 0.0001 in. (0.00254 mm) and accurate to within at least 0.001 in. (0.0254 mm).

(c) The Corrugated Polyvinyl Chloride (PVC) Pipe Inspection Guide.

1028.2 Procedure

1028.2.1 Polyvinyl Chloride Culvert Pipe

Polyvinyl Chloride culvert pipe is to be accepted for use on the basis of the pipe manufacturer having filed the required documents set forth in the specifications, the plant being approved and qualified, certification by the manufacturer, manufacturer quality control documentation, identification marking, random sampling and testing, and field inspection.

1028.2.1.1 Manufacturer Approval

Prior to acceptance of polyvinyl chloride culvert pipe, the manufacturer shall have furnished Construction and Materials a Quality Control Plan as required by Sec 1028 a statement certifying that fabrication will be in accordance with the QC plan, a list of the sources of material used in fabrication, a statement guaranteeing that all material used in fabrication will be in accordance with the applicable specification.

A list of those manufacturers who have filed acceptable documents is shown in 106.1.1028 Sec 1028.

During any visit to the manufacturer, the manufacturer’s records shall be reviewed for test result and inspection documentation. The records shall be specific to each shipment of pipe, and shall indicate the purchase order number or project number, route and county, date of inspection, quantity (ft or m), pipe diameter and number of sockets and fittings.

If a manufacturer is found not to be in compliance with the specifications, notify Construction and Materials so the manufacturer’s approval can be reconsidered.

If the manufacturer is found falsifying documentation, Construction and Materials is to be notified immediately for removal of that manufacturer or plant from the approval list.

1028.2.1.2 Identification Markings

Each pipe and fitting is to be clearly marked, in accordance with ASTM F 949, at not more than 5 ft. (1.5 m) intervals by the manufacturer and the marking is to contain the manufacturer’s name or trademark, nominal size, “ASTM F 949,” the type of plastic “PVC” and minimum cell classification, and the extrusion code.

1028.2.1.3 Random Sampling

Random samples are to be obtained from fabricated culvert sections and submitted to the Laboratory for determination of physical properties. Samples may be taken at the point of manufacture, intermediate distribution point, or at the project. The manufacturer shall provide the definition of a lot. If no definition is provided, a lot will be one day’s production. Or, if at the project, a lot shall be the entire quantity shipped.

Samples are to be submitted to the Laboratory from approximately 10 percent of the lots of pipe presented for inspection. The sample shall consist of 3 specimens each a minimum of one diameter in length. The specimens shall be obtained from different sections in the lot and shall be taken from the end of the pipe.

If the sample fails to meet the physical requirements, the pipe sampled will be rejected and the lot resampled. A resample will be the same number of specimens as the original sample. The resample must comply in all respects or the entire lot will be rejected

1028.2.1.4 Field Inspection

Field inspection shall be performed using the Corrugated Polyvinyl Chloride (PVC) Pipe Inspection Guide.

Frequency of inspection shall be at the discretion of the engineer, but shall be performed on approximately 10 percent of shipments and a minimum of once per month.

The engineer may inspect the fabricated pipe at the manufacturing plant, intermediate distribution point, or project. The engineer shall be furnished by the manufacturer, and itemized statement of the sizes and lengths of pipe in each shipment. The engineer shall have free access to the manufacturing plant or intermediate distribution point for inspection and every facility shall be extended for this purpose. Any pipe, which has been previously rejected and included in a later lot, will be considered sufficient cause for rejection of the entire lot.

The manufacturer shall specify in their application for placement on the qualified list to which standards their pipe is fabricated: English or metric. The standard fabrication units will be designated on the qualified list for each manufacturer. All measurements shall be made using the applicable units when determining compliance with specification.

The specified inside diameter, in accordance with Sec 728, shall be reduced by no more than 7.5 percent by deflection when installed. All pipe installed shall be tested for deflection.

Pipe that has been rejected at the origin shall be marked with a small, filled circle or orange paint on the inside of the barrel, in the downstream end. The pipe is subject to inspection and rejection at destination for any damage that may have occurred in handling. Pipe that is rejected at destination shall be marked in the same manner as pipe rejected at the origin. The inspector may choose to mark inspected pipe to prevent inspection of the same pipe more than once. However, the “MoDOT OK” stamp should not be used.

If pipe is rejected for not being in accordance with specifications and the requirements set forth in the Corrugated Polyvinyl Chloride (PVC) Pipe Inspection Guide, a letter documenting the failure shall be provided to the manufacturer, with a copy to Construction and Materials. The inspection guide used to inspect the rejected pipe shall be included with the letter to the manufacturer and Construction and Materials. The letter should include the location of the plant at which the failure occurred.

1028.3 Sample Record

Field inspection shall be recorded in Site Manager, as described in Automation Section 3510. The sample record shall include the brand name, manufacturer’s name, size and lengths. The sample record is to indicate acceptance or rejection. If the sample record indicates rejection, the reason for rejection shall be stated in the remarks or the test result details.

The manufacturer or shipper is required to notify Construction and Materials of impending shipments using the Shipping Report Form for reporting to the Central Office, (GS-17 Form 1). This information will allow MoDOT to track the materials, obtain samples and perform Quality Assurance inspection as necessary.

A SiteManager sample record shall be created for each size of pipe in each shipment.

Each SiteManager sample record will be created by Construction and Materials.

Polyvinyl Chloride Culvert Pipe. If the sample record indicates acceptance, the basis of acceptance of the pipe shall be that the material is an approved brand and that examination of the material indicates that the material conforms to all of the requirements of the specifications.

Completion of the sample records for materials purchased under a MoDOT purchase order is to be as described in 1101 Materials Purchased by a MoDOT Purchase Order.