Geosynthetics February/March 2020 - 18

An innovative erosion control solution using concrete enhanced synthetic turf

FIGURE 4 CEST used for dam spillway protection

FIGURE 5 CEST installed at Nellis Air Force Base
18

Geosynthetics | February March 2020

The CEST was installed to armor
the primary spillway on a dam in Texas
for the management of peak overflows.
The spillway is approximately 90 feet (27
m) wide and 100 feet (30 m) long on a
4H:1V slope. The system was designed
for a 1.5-foot (0.46-m) overtopping
depth and a velocity of 18 feet/second
(5.5 m/s). Shortly after installation, the
spillway was subjected to an overtopping event. A velocity of 10 feet/second
(3.0 m/s) was estimated on the CEST
during this event. After the overtopping event, an inspection of the CEST
spillway revealed that it performed as
designed. There was no damage or instability of the system, and there was no
erosion of the underlying soil subgrade.
A photograph of the installed CEST is
shown in Figure 4.

The CEST was installed at Nellis Air
Force Base near Las Vegas, Nev., in the
summer of 2018. The application is a
perimeter channel around a closed landfill. The existing channel had been experiencing significant erosion. A photograph
of the channel with CEST is shown in
Figure 5. A tan blend of engineered turf
was used for this application to match the
arid environment of Las Vegas.
The CEST was installed by the South
Florida Water Management District
(SFWMD) on a canal bank in Palm Beach
Gardens, Fla. This canal bank had significant erosion due to boat wakes. The canal
bank was reconstructed out of the highly
erodible, sandy site soils, which were
graded to a 1.5H:1V slope. The CEST was
installed in July 2017 on this project, and
on September 10-11, 2017, Hurricane



Geosynthetics February/March 2020

Table of Contents for the Digital Edition of Geosynthetics February/March 2020

Geosynthetics February/March 2020 - Cover1
Geosynthetics February/March 2020 - Cover2
Geosynthetics February/March 2020 - 1
Geosynthetics February/March 2020 - 2
Geosynthetics February/March 2020 - 3
Geosynthetics February/March 2020 - 4
Geosynthetics February/March 2020 - 5
Geosynthetics February/March 2020 - 6
Geosynthetics February/March 2020 - 7
Geosynthetics February/March 2020 - 8
Geosynthetics February/March 2020 - 9
Geosynthetics February/March 2020 - 10
Geosynthetics February/March 2020 - 11
Geosynthetics February/March 2020 - 12
Geosynthetics February/March 2020 - 13
Geosynthetics February/March 2020 - 14
Geosynthetics February/March 2020 - 15
Geosynthetics February/March 2020 - 16
Geosynthetics February/March 2020 - 17
Geosynthetics February/March 2020 - 18
Geosynthetics February/March 2020 - 19
Geosynthetics February/March 2020 - 20
Geosynthetics February/March 2020 - 21
Geosynthetics February/March 2020 - 22
Geosynthetics February/March 2020 - 23
Geosynthetics February/March 2020 - 24
Geosynthetics February/March 2020 - 25
Geosynthetics February/March 2020 - 26
Geosynthetics February/March 2020 - 27
Geosynthetics February/March 2020 - 28
Geosynthetics February/March 2020 - 29
Geosynthetics February/March 2020 - 30
Geosynthetics February/March 2020 - 31
Geosynthetics February/March 2020 - 32
Geosynthetics February/March 2020 - 33
Geosynthetics February/March 2020 - 34
Geosynthetics February/March 2020 - 35
Geosynthetics February/March 2020 - 36
Geosynthetics February/March 2020 - 37
Geosynthetics February/March 2020 - 38
Geosynthetics February/March 2020 - 39
Geosynthetics February/March 2020 - 40
Geosynthetics February/March 2020 - 41
Geosynthetics February/March 2020 - 42
Geosynthetics February/March 2020 - 43
Geosynthetics February/March 2020 - 44
Geosynthetics February/March 2020 - 45
Geosynthetics February/March 2020 - 46
Geosynthetics February/March 2020 - 47
Geosynthetics February/March 2020 - 48
Geosynthetics February/March 2020 - 49
Geosynthetics February/March 2020 - 50
Geosynthetics February/March 2020 - 51
Geosynthetics February/March 2020 - 52
Geosynthetics February/March 2020 - Cover3
Geosynthetics February/March 2020 - Cover4
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-december-2021-january-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-october-november-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-august-september-2021
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
https://www.nxtbook.com/ifai/geosynthetics/1220GS
https://www.nxtbook.com/ifai/geosynthetics/1020GS
https://www.nxtbook.com/ifai/geosynthetics/0820GS
https://www.nxtbook.com/ifai/geosynthetics/0620GS
https://www.nxtbook.com/ifai/geosynthetics/0420GS
https://www.nxtbook.com/ifai/geosynthetics/0220GS
https://www.nxtbook.com/ifai/geosynthetics/1219GS
https://www.nxtbook.com/ifai/geosynthetics/1019GS
https://www.nxtbook.com/ifai/geosynthetics/0819GS
https://www.nxtbook.com/ifai/geosynthetics/0619GS
https://www.nxtbook.com/ifai/geosynthetics/0419GS
https://www.nxtbook.com/ifai/geosynthetics/0219GS
https://www.nxtbook.com/ifai/geosynthetics/1218GS
https://www.nxtbook.com/ifai/geosynthetics/1018GS
https://www.nxtbook.com/ifai/geosynthetics/0818GS
https://www.nxtbook.com/ifai/geosynthetics/0618GS
https://www.nxtbook.com/ifai/geosynthetics/0418GS
https://www.nxtbook.com/ifai/geosynthetics/0218GS
https://www.nxtbookmedia.com