Underground Construction - December 2019 - 30
Longitudinal bending demonstration test on a lining system
REHABTECHNOLOGY
Lessons Learned on Pressure Pipe
Rehabilitation Projects
David Kozman, HammerHead Trenchless; Joanne Carroll, Subtegic Group; Matthew Coleman, Toronto Water;
NASSCO Pressure Pipe Committee
EDITOR'S NOTE: This is the final installment of
a three-part series on pressure pipe presented
by members of the National Association of
Sewer Service Companies (NASSCO) Pressure
Pipe Committee. There will be an in-depth
program track on these topics and more
at UCT, Jan. 28-30, 2020, in Fort Worth, Texas.
Pressure pipeline rehabilitation technologies have been utilized successfully for
over 100 years, with hand-troweled cement
mortar lining (CML) first applied in aged
cast iron pipelines in the early 1900s to
improve hydraulics and water quality. This
was followed by spincast application of
30
DECEMBER 2019 | UConOnline.com
CML in the 1930s and the development of
spray-applied polymer linings in the 1970s,
providing some structural enhancements
to the existing pipeline. Sliplining introduced fully structural repair in the 1940s
and 1950s. Close-fit technologies such as
cured-in-place pipe (CIPP) brought fully
structural repair through applications
in non-pressure sewer applications in
the 1970s, while launching CIPP in the
pressure pipe market in the 1980s. Today,
a vast array of pressure pipe renewal solutions are available, contributing to rapid
market growth and acceptance worldwide.
Industry successes, failures and challenges
have put increased emphasis on standards
development, particularly as it relates to
design, installation, testing and ongoing
maintenance
Intuitively, many aspects of the approach to the trenchless renewal of gravity
flow sewer pipelines have been reciprocated onto pressure pipe projects. The first industry standard for trenchless applications,
ASTM F1216, initially released in 1989, focused on CIPP installed using the inversion
method. This included a non-mandatory
design appendix with several design checks
http://www.UConOnline.com
Underground Construction - December 2019
Table of Contents for the Digital Edition of Underground Construction - December 2019
Contents
Underground Construction - December 2019 - FC
Underground Construction - December 2019 - IFC
Underground Construction - December 2019 - Contents
Underground Construction - December 2019 - 4
Underground Construction - December 2019 - 5
Underground Construction - December 2019 - 6
Underground Construction - December 2019 - 7
Underground Construction - December 2019 - 8
Underground Construction - December 2019 - 9
Underground Construction - December 2019 - 10
Underground Construction - December 2019 - 11
Underground Construction - December 2019 - 12
Underground Construction - December 2019 - 13
Underground Construction - December 2019 - 14
Underground Construction - December 2019 - 15
Underground Construction - December 2019 - 16
Underground Construction - December 2019 - 17
Underground Construction - December 2019 - 18
Underground Construction - December 2019 - 19
Underground Construction - December 2019 - 20
Underground Construction - December 2019 - 21
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Underground Construction - December 2019 - 28
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Underground Construction - December 2019 - 30
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Underground Construction - December 2019 - 40
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Underground Construction - December 2019 - 58
Underground Construction - December 2019 - IBC
Underground Construction - December 2019 - BC
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