ASTM A 998/A 998M Standard Practice for Structural Design of Reinforcements for Fittings in Factory-Made Corrugated Steel Pipe for Sewers and Other Applications
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ASTM A 998/A 998M Document Information:
Title
Standard Practice for Structural Design of Reinforcements for Fittings in Factory-Made Corrugated Steel Pipe for Sewers and Other Applications
ASTM International
Publication Date:
May 1, 2008
Scope:
This practice covers the structural design of reinforcement for
fittings in factory-made, round corrugated steel pipe, conforming
to Specifications A 760/A 760M or A 762/ A 762M, for use as storm
and sanitary sewers and other buried applications. This practice is
for fittings on pipe installed in a trench or embankment and
subjected to earth loads and live loads. It must be recognized that
a buried corrugated pipe is a composite structure made up of the
steel ring and the soil envelope, and both elements play a vital
part. Both main and branch pipe shall be designed in accordance
with Practice A 796/A 796M and installed in accordance with
Practice A 798/A 798M.
This practice covers the structural design of reinforcement for
fittings such as those for branch pipes. Refer to Section 5 for
design limitations.
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.
The values stated in either inch-pound units or SI units shall
be regarded separately as standard. The values stated in each
system are not exact equivalents; therefore, each system must be
used independently of the other, without combining values in any
way. SI units are shown in brackets in the text for clarity, but
they are the applicable values when the design is to be performed
using SI units.
Keywords:
- buried applications
- corrugated steel pipe
- pipe fittings
- reinforcement
- steel pipe structural design
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