Category:1022 Corrugated Metallic-Coated Steel Pipe Underdrain

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This article establishes procedures for inspecting, acceptance and reporting of corrugated metallic-coated steel pipe underdrain. Refer to Sec 1022 for MoDOT’s specifications.

1022.1 Apparatus

(a) Magnetic or electronic gauge, reading range 0-40 mils (0-1000 μm).

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

(d) The Corrugated Metal Pipe (CMP) Inspection Guide.

1022.2 Procedure

1022.2.1 Corrugated Metallic-Coated Steel Pipe Underdrain

Corrugated metallic-coated steel underdrain is to be accepted in accordance with Sec 1022.2.

1022.2.2 Material

The pipe shall be in accordance with Sec 1022 and Sec 1020.

1022.2.3 Identification Markings

Pipe is to be marked as described in 1020.2.3 Identification Markings for Steel Sheet.

1022.2.4 Random Sampling

Random samples are to be taken as described in 1020.2.4 Random Sampling of Steel Sheet.

1022.2.5 Field Inspection

Field inspection shall be performed in accordance with and at the frequency specified in 1020.2.5 Field Inspection.

1022.2.6 Fabrication

Fabrication of corrugated metallic-coated steel pipe underdrain shall be in accordance with Sec 1020 and Sec 1022.

1022.2.7 Repair of Damaged Coating

Units on which the metallic coating has been damaged shall be repaired in as described in 1020.2.7.2 Repair of Damaged Coating.

1022.3 Sample Record

Sample ID’s shall be assigned and sample records shall be created in as described in 1020.3 Sample Record.