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Description / Abstract:
This specification covers polymer precoated, closed rib steel
pipe, intended for use for storm water drainage, underdrains, the
construction of culverts, and similar uses. Pipe covered by this
specification is not normally used for the conveyance of sanitary
or industrial wastes. The steel sheet used in fabrication of the
pipe has a polymer protective coating over a metallic coating of
zinc.
The polymer precoating provides extra protection of the base
metal against corrosion or abrasion, or both, in addition to that
provided by the metallic coating. Severe environments are likely to
cause corrosion problems to accessory items such as coupling band
hardware that does not have a polymer coating unless supplemental
protection is provided. Additional protection for polymer precoated
steel pipe is available by use of coatings applied after
fabrication of the pipe as described in Specification A 849.
This specification does not include requirements for bedding,
backfill, or the relationship between earth cover load and sheet
thickness of the pipe. Experience with drainage products has shown
that successful performance depends upon the proper selection of
rib depth, sheet thickness, type of bedding and backfill,
controlled manufacture in the plant, and care in installation. The
installation procedure is described in Practice A 798/A 798M.
This specification is applicable to orders in either inch-pound
units as A 1019, or in SI units as A 1019M. Inch-pound units and SI
units are not necessarily equivalent. SI units are shown in
brackets in the text for clarity, but they are the applicable
values when the material is ordered toA 1019M.
This standard does not purport to address all of the safety
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.