Geosynthetics April/May 2021 - 12

Modular geosynthetics construction

with the deployment of a single roll of geomembrane, and cutting, sizing and seaming these rolls in the field under variable
and sometimes harsh conditions (Figure
2). The use of factory-fabricated geomembrane panels allows rapid deployment
and installation of geomembrane panels
ranging in size from 0.25 to 200 acres (0.1
to 80.9 ha). The fabricated panels greatly
reduce installation time, labor and per
diem costs; worker injuries; destructive
testing and patching of the final geomembrane; and field quality control and assurance observations and testing. The geosynthetics industry has proven over the last 30
years that modular construction can yield
excellent finished containment systems.

FIGURE 2 Cleaning seam area for field fabrication and seaming of two field-deployed rolls
of geomembrane
12

Geosynthetics | April May 2021

Cost comparison
Because the cost of installation and thirdparty CQA of a geomembrane for a containment system can be comparable to the
cost of the geomembrane itself, field installation and CQA must be optimized/minimized to obtain the most benefit for the
owner and not slow overall construction.
The Fabricated Geomembrane Institute
(FGI) created a cost comparison calculator/
spreadsheet that can be used to estimate
the installation and CQA cost difference
between factory- and field-fabricated geomembranes in addition to the quality benefits of factory-fabricated geomembranes
highlighted by Stark et al. (2020). The
cost comparison calculator/spreadsheet can be downloaded free at https://
www.fabricatedgeomembrane.com/
protected/pond-liner-calculator. The cost
comparison does not include the cost of the
geomembrane or other required materials.
This calculator is " For estimating purposes
only, " and a formal cost estimate should be
conducted for each project. The calculator
can be used for other geosynthetics, such
as factory-fabricated geotextiles.
The cost comparison between factory- and field-fabricated geomembranes
includes factors such as the shorter onsite time; less field seaming, sampling
and testing; reduced installation crew
expenses, such as per diem and lodging; and quicker installation using factory-fabricated geomembranes. The
cost comparison for a 2.3-acre (0.9-ha)
pond is presented below to illustrate the
reduced costs with a factory-fabricated
geomembrane, which also results in a
higher-quality installation because most
of the seams are completed in a climatecontrolled and clean factory setting (Stark
et al. 2020). For the hypothetical 23-acre
(9.3-ha) pond used herein, the installation and CQA cost of a factory-fabricated
geomembrane is 65% less than for a fieldfabricated geomembrane, i.e., $33,513
versus $97,034.


http://https:// http://www.fabricatedgeomembrane.com/

Geosynthetics April/May 2021

Table of Contents for the Digital Edition of Geosynthetics April/May 2021

Geosynthetics April/May 2021 - Cover1
Geosynthetics April/May 2021 - Cover2
Geosynthetics April/May 2021 - 1
Geosynthetics April/May 2021 - 2
Geosynthetics April/May 2021 - 3
Geosynthetics April/May 2021 - 4
Geosynthetics April/May 2021 - 5
Geosynthetics April/May 2021 - 6
Geosynthetics April/May 2021 - 7
Geosynthetics April/May 2021 - 8
Geosynthetics April/May 2021 - 9
Geosynthetics April/May 2021 - 10
Geosynthetics April/May 2021 - 11
Geosynthetics April/May 2021 - 12
Geosynthetics April/May 2021 - 13
Geosynthetics April/May 2021 - 14
Geosynthetics April/May 2021 - 15
Geosynthetics April/May 2021 - 16
Geosynthetics April/May 2021 - 17
Geosynthetics April/May 2021 - 18
Geosynthetics April/May 2021 - 19
Geosynthetics April/May 2021 - 20
Geosynthetics April/May 2021 - 21
Geosynthetics April/May 2021 - 22
Geosynthetics April/May 2021 - 23
Geosynthetics April/May 2021 - 24
Geosynthetics April/May 2021 - 25
Geosynthetics April/May 2021 - 26
Geosynthetics April/May 2021 - 27
Geosynthetics April/May 2021 - 28
Geosynthetics April/May 2021 - 29
Geosynthetics April/May 2021 - 30
Geosynthetics April/May 2021 - 31
Geosynthetics April/May 2021 - 32
Geosynthetics April/May 2021 - 33
Geosynthetics April/May 2021 - 34
Geosynthetics April/May 2021 - 35
Geosynthetics April/May 2021 - 36
Geosynthetics April/May 2021 - 37
Geosynthetics April/May 2021 - 38
Geosynthetics April/May 2021 - 39
Geosynthetics April/May 2021 - 40
Geosynthetics April/May 2021 - 41
Geosynthetics April/May 2021 - 42
Geosynthetics April/May 2021 - 43
Geosynthetics April/May 2021 - 44
Geosynthetics April/May 2021 - Cover3
Geosynthetics April/May 2021 - Cover4
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-december-2021-january-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-october-november-2021
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https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-june-july-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-april-may-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-february-march-2021
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