ASTM A 760/A 760M zinc coated Type I corrugated steel pipe with [annular]
[helical] 68 by 13 mm 2-2/3 by 1/2 inch corrugations and a concrete lining
in accordance with ASTM A 849.
2.1.3.6
Polymer Precoated
ASTM A 762/A 762M corrugated steel pipe fabricated from ASTM A 742/A 742M
Grade 250/250 10/10 polymer precoated sheet of either:
a.
Type [I] [II] pipe with [annular] [helical] 68 by 13 mm 2-2/3 by
1/2 inch corrugations.
b.
Type [IR] [IIR] pipe with helical 19 by 19 by 190 mm 3/4 by 3/4 by
7-1/2 inch corrugations.
2.1.3.7
Polymer Precoated, Part Paved
ASTM A 762/A 762M Type [I] [II] corrugated steel pipe and AASHTO M 190 Type
B (modified), paved invert only, fabricated from ASTM A 742/A 742M Grade
250/250 10/10 polymer precoated sheet with [annular] [helical] 68 by 13 mm
2-2/3 by 1/2 inch corrugations.
2.1.3.8
Polymer Precoated, Fully Paved
ASTM A 762/A 762M Type [I] [II] corrugated steel pipe and AASHTO M 190
Type D (modified), fully paved only, fabricated from ASTM A 742/A 742M
Grade 250/250 10/10 polymer precoated sheet with [annular] [helical] 68 by
13 mm 2-2/3 by 1/2 inch corrugations.
2.1.4
Corrugated Aluminum Alloy Pipe
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NOTE: Coordinate with paragraph Corrugated Steel
Pipe.
Corrugated aluminum pipe has shown satisfactory
corrosion resistance in clean granular materials
even when seawater is present. However, corrugated
aluminum pipe should not be used in highly acid (pH
below 4) or highly alkaline (pH above 9) soils, or
in organic silts and clays, identified as Types OH
and OL in the Soil Classification Chart, ASTM D
2487. This pipe should also not be used where it
will be in contact with other metals or in metallic
deposits.
The following are requirements for LANTNAVFACENGCOM
projects: Provide ASTM A 849, Type B, C, M, and P
with fully coated, half coated, exterior coated,
interior coated, invert coated, invert paved, and
fully lined. Do not use Type C, concrete lining on
aluminum materials.
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ASTM B 745/B 745M corrugated aluminum alloy pipe of either:
a.
Type [I] [II] pipe with [annular] [helical] corrugations.
SECTION 02630
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