Geosynthetics February/March 2021 - 28

Comparative analysis of the flow and filtration capabilities of sediment retention devices

Test methodologies
and rationales have
been presented for
the evaluation and
quantification of
SRD performance
in both bench-scale
and large-scale " as
installed " scenarios.

phase " sediment concentration used
in the test method is described in the
standard as follows: " An important
variable in any testing procedure is
the establishment of test 'conditions.'
For a sediment control performance
test this means selecting an appropriate design storm event and associated
runoff along with an expected amount
of sediment to be transported by the
runoff. For this testing, a standard
10-y, 6-h storm event (mid-Atlantic
region of US) was selected. This return
frequency is commonly used for sizing sediment control ponds and, thus,
was deemed appropriate for the testing
of other SRDs. Using this criterion, a

4-inch (100-mm) rainfall was selected.
It was also assumed that approximately
25% of the storm would occur during
the peak 30 minutes, and that 50% of
the rainfall would infiltrate the ground
(Goldman et al. 1986). A theoretical
contributory area of 100 feet (30 m)
slope length by 20 feet (6 m) wide was
selected to limit runoff to sheet flow
conditions (Richardson 1990). Runoff
and associated sediment were calculated using the Modified Universal Soil
Loss Equation (MUSLE). "
As described above, MUSLE was
used in the standard test method to produce test quantities of runoff of 5,000
pounds (2,250 kg) and sediment load

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26

Geosynthetics | February March 2021


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Geosynthetics February/March 2021

Table of Contents for the Digital Edition of Geosynthetics February/March 2021

Geosynthetics February/March 2021 - 1
Geosynthetics February/March 2021 - 2
Geosynthetics February/March 2021 - 3
Geosynthetics February/March 2021 - 4
Geosynthetics February/March 2021 - 5
Geosynthetics February/March 2021 - 6
Geosynthetics February/March 2021 - 7
Geosynthetics February/March 2021 - 8
Geosynthetics February/March 2021 - 9
Geosynthetics February/March 2021 - 10
Geosynthetics February/March 2021 - 11
Geosynthetics February/March 2021 - 12
Geosynthetics February/March 2021 - 13
Geosynthetics February/March 2021 - 14
Geosynthetics February/March 2021 - 15
Geosynthetics February/March 2021 - 16
Geosynthetics February/March 2021 - 17
Geosynthetics February/March 2021 - 18
Geosynthetics February/March 2021 - 19
Geosynthetics February/March 2021 - 20
Geosynthetics February/March 2021 - 21
Geosynthetics February/March 2021 - 22
Geosynthetics February/March 2021 - 23
Geosynthetics February/March 2021 - 24
Geosynthetics February/March 2021 - 25
Geosynthetics February/March 2021 - 26
Geosynthetics February/March 2021 - 27
Geosynthetics February/March 2021 - 28
Geosynthetics February/March 2021 - 29
Geosynthetics February/March 2021 - 30
Geosynthetics February/March 2021 - 31
Geosynthetics February/March 2021 - 32
Geosynthetics February/March 2021 - 33
Geosynthetics February/March 2021 - 34
Geosynthetics February/March 2021 - 35
Geosynthetics February/March 2021 - 36
Geosynthetics February/March 2021 - 37
Geosynthetics February/March 2021 - 38
Geosynthetics February/March 2021 - 39
Geosynthetics February/March 2021 - 40
Geosynthetics February/March 2021 - 41
Geosynthetics February/March 2021 - 42
Geosynthetics February/March 2021 - 43
Geosynthetics February/March 2021 - 44
Geosynthetics February/March 2021 - 45
Geosynthetics February/March 2021 - 46
Geosynthetics February/March 2021 - 47
Geosynthetics February/March 2021 - 48
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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
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