Geosynthetics August/September 2020 - 32

PVC sheet piling for cutoff and containment barriers

PVC sheet pile effectiveness
in cutoff applications

4a

FIGURES 4a and 4b
Bolsa Chica PVC sheet
pile cutoff wall alignment

4b

The U.S. Army Corps of Engineers
( U S AC E ) re c e nt ly publ ishe d t he
Interim Poly Vinyl Chloride (PVC)
Sheet Pile Guidance document, which
provides guidance on the applications of PVC sheet piling as well as the
important specification requirements.
This document lists hydraulic cutoff
barriers as an application for PVC sheet
pile. In addition, the USACE recommends that all virgin PVC used shall
have a minimum cell classification of
1-42443-33, in accordance with ASTM
D4216, and that the manufacturer provide a certificate of analysis attesting to
this along with the product warranty
(USACE 2017).
The effectiveness of PVC sheet piling as a barrier can best be demonstrated by reviewing the real-world
results from case studies. The following case studies were chosen primarily because of their age, postconstruction monitoring of the effectiveness
and proven continued performance.
Many other case studies are available.
However, in many cases postconstruction monitoring data is not always
readily available. Anecdotal evidence
would suggest that the effectiveness of
PVC sheet piles for cutoff applications
is becoming more widely accepted by
the engineering community as usage
continues to increase.

Bolsa Chica
The Bolsa Chica Lowlands Restoration
Project is the largest wetland restoration
in Southern California history. The project created or restored more than 600
acres (243 ha) of marine and wetland
habitat and was built as required mitigation for the expansion of the Ports of
Long Beach and Los Angeles. Restoring
the wetlands involved reconnecting the
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Geosynthetics August/September 2020

Table of Contents for the Digital Edition of Geosynthetics August/September 2020

Geosynthetics August/September 2020 - Cover1
Geosynthetics August/September 2020 - Cover2
Geosynthetics August/September 2020 - 1
Geosynthetics August/September 2020 - 2
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Geosynthetics August/September 2020 - Cover3
Geosynthetics August/September 2020 - Cover4
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