Underground Construction - August 2021 - 24

CURRENTLY @ CUIRE
Comparison of construction,
environmental cost of SAPL
with CIPP, sliplining
Th e life-cycle cost of a project includes
direct and indirect cost of construction,
social and environmental costs, as well
as planning, design, operation and
maintenance costs. Th e construction and
environmental cost analysis performed
in this task evaluated construction
as well environmental cost of SAPL,
cured-in-place pipe (CIPP) and sliplining
installations. Th is comparison can be
useful during planning and design
phase of a culvert renewal to select a
method with lowest construction and
environmental costs.
Review of the CIPP
design equations
To evaluate all the parameters needed
for development of new design equations,
it was crucial to investigate applicability
of current design methodologies to
SAPLs, mainly CIPP (ASTM F1216
design Appendix X1).
FIGURE 3. Two common SAPL installation methods: (a) following and (b) filling the corrugation pattern.
Additionally, this task included
consideration of WRc Sewerage
Rehabilitation Manual, the German
Static Calculation for the Rehabilitation
of Drains and Sewers Using Lining and
Assembly Procedures (ATV-DVWK-M
127 E, Part 2), and the ASTEE 3R2014
Structural Design for Non-Circular
Linings under Groundwater Pressure,
as well as pending ASCE Manual of
Practice for the Design of Flexible Liners
(currently in press).
SAPL fi eld inspection
and data collection
FIGURE 4. (a) and (b). Some samples of SAPL installation issues.
24 AUGUST 2021 | UCONonline.com
In addition to property of material,
performance of any trenchless renewal
method and specifi cally SAPLs, is
dependent on the quality of installation.
Appropriately designed and properly
installed liner systems will generally
perform well throughout their design life.
Proactive maintenance strategies can
be scheduled based on the structural
condition and performance assessments
of the existing structures through
the fi eld inspection and collected
data. To identify the most common
issues with SAPL installations, a
comprehensive fi eld inspection program
was prepared and conducted.
Th e objective of this task was to
collect data through in-situ inspections
of past SAPL projects. Th is information
was used to prepare performance
specifi cations and to identify and
categorize installation issues. Th e data
collected through this task will improve
design and installation of future SAPL

http://www.UCONonline.com

Underground Construction - August 2021

Table of Contents for the Digital Edition of Underground Construction - August 2021

Contents
Underground Construction - August 2021 - Cover1
Underground Construction - August 2021 - Cover2
Underground Construction - August 2021 - Contents
Underground Construction - August 2021 - 4
Underground Construction - August 2021 - 5
Underground Construction - August 2021 - 6
Underground Construction - August 2021 - 7
Underground Construction - August 2021 - 8
Underground Construction - August 2021 - 9
Underground Construction - August 2021 - 10
Underground Construction - August 2021 - 11
Underground Construction - August 2021 - 12
Underground Construction - August 2021 - 13
Underground Construction - August 2021 - 14
Underground Construction - August 2021 - 15
Underground Construction - August 2021 - 16
Underground Construction - August 2021 - 17
Underground Construction - August 2021 - 18
Underground Construction - August 2021 - 19
Underground Construction - August 2021 - 20
Underground Construction - August 2021 - 21
Underground Construction - August 2021 - 22
Underground Construction - August 2021 - 23
Underground Construction - August 2021 - 24
Underground Construction - August 2021 - 25
Underground Construction - August 2021 - 26
Underground Construction - August 2021 - 27
Underground Construction - August 2021 - 28
Underground Construction - August 2021 - 29
Underground Construction - August 2021 - 30
Underground Construction - August 2021 - 31
Underground Construction - August 2021 - 32
Underground Construction - August 2021 - 33
Underground Construction - August 2021 - 34
Underground Construction - August 2021 - 35
Underground Construction - August 2021 - 36
Underground Construction - August 2021 - 37
Underground Construction - August 2021 - 38
Underground Construction - August 2021 - 39
Underground Construction - August 2021 - 40
Underground Construction - August 2021 - 41
Underground Construction - August 2021 - 42
Underground Construction - August 2021 - 43
Underground Construction - August 2021 - 44
Underground Construction - August 2021 - 45
Underground Construction - August 2021 - 46
Underground Construction - August 2021 - 47
Underground Construction - August 2021 - 48
Underground Construction - August 2021 - 49
Underground Construction - August 2021 - 50
Underground Construction - August 2021 - Cover3
Underground Construction - August 2021 - Cover4
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