Geosynthetics October/November 2020 - 33

the wrap top (and, thus, on either side of
the inserted geogrid) made up that difference to help stay on grade as additional
lifts were added. The second lift was completed in similar fashion to the first, and
the entire process repeated to build the
wall higher (Figure 1 on pages 26-27).
It is important to note that wall construction was facilitated by beginning
at the lowest elevation portions of the
wall base, then progressing upward as
grade changes dictated. This means that
foundation steps were required along the
base of the wall for each of the bridgeapproach embankments. Care was taken
to make sure these step heights corresponded directly to the height of wrap
lifts; that is, 1 foot (0.3 m).

High-water inundation
Project scheduling called for partial
completion of the embankments prior
to the planned June release of spring
runoff water upstream on the Pend
Oreille River. This temporary high-water
period extended for several weeks and
inundated the lower 4 to 5 feet (1.2 to
1.5 m) of the GWFV walls on the south
faces of the embankments, potentially
saturating portions of the embankment
toes (Figure 7). Due to concerns that
face saturation, followed by receding
waters, could pull soil infill out of the
wrap lifts, the project team decided to
apply an environmentally approved tackifier (binder) to those lower wrap lifts
expected to be submerged.

FIGURE 7 Toe of GWFV wall submerged
temporarily due to rising water levels
of the Pend Oreille River

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Geosynthetics October/November 2020

Table of Contents for the Digital Edition of Geosynthetics October/November 2020

Geosynthetics October/November 2020 - Cover1
Geosynthetics October/November 2020 - Cover2
Geosynthetics October/November 2020 - 1
Geosynthetics October/November 2020 - 2
Geosynthetics October/November 2020 - 3
Geosynthetics October/November 2020 - 4
Geosynthetics October/November 2020 - 5
Geosynthetics October/November 2020 - 6
Geosynthetics October/November 2020 - 7
Geosynthetics October/November 2020 - 8
Geosynthetics October/November 2020 - 9
Geosynthetics October/November 2020 - 10
Geosynthetics October/November 2020 - 11
Geosynthetics October/November 2020 - 12
Geosynthetics October/November 2020 - 13
Geosynthetics October/November 2020 - 14
Geosynthetics October/November 2020 - 15
Geosynthetics October/November 2020 - 16
Geosynthetics October/November 2020 - 17
Geosynthetics October/November 2020 - 18
Geosynthetics October/November 2020 - 19
Geosynthetics October/November 2020 - 20
Geosynthetics October/November 2020 - 21
Geosynthetics October/November 2020 - 22
Geosynthetics October/November 2020 - 23
Geosynthetics October/November 2020 - 24
Geosynthetics October/November 2020 - 25
Geosynthetics October/November 2020 - 26
Geosynthetics October/November 2020 - 27
Geosynthetics October/November 2020 - 28
Geosynthetics October/November 2020 - 29
Geosynthetics October/November 2020 - 30
Geosynthetics October/November 2020 - 31
Geosynthetics October/November 2020 - 32
Geosynthetics October/November 2020 - 33
Geosynthetics October/November 2020 - 34
Geosynthetics October/November 2020 - 35
Geosynthetics October/November 2020 - 36
Geosynthetics October/November 2020 - 37
Geosynthetics October/November 2020 - 38
Geosynthetics October/November 2020 - 39
Geosynthetics October/November 2020 - 40
Geosynthetics October/November 2020 - 41
Geosynthetics October/November 2020 - 42
Geosynthetics October/November 2020 - 43
Geosynthetics October/November 2020 - 44
Geosynthetics October/November 2020 - 45
Geosynthetics October/November 2020 - 46
Geosynthetics October/November 2020 - 47
Geosynthetics October/November 2020 - 48
Geosynthetics October/November 2020 - Cover3
Geosynthetics October/November 2020 - Cover4
Geosynthetics October/November 2020 - Geosynthetics Conf. Brochure 1
Geosynthetics October/November 2020 - Geosynthetics Conf. Brochure 2
Geosynthetics October/November 2020 - Geosynthetics Conf. Brochure 3
Geosynthetics October/November 2020 - Geosynthetics Conf. Brochure 4
Geosynthetics October/November 2020 - Geosynthetics Conf. Brochure 5
Geosynthetics October/November 2020 - Geosynthetics Conf. Brochure 6
Geosynthetics October/November 2020 - Geosynthetics Conf. Brochure 7
Geosynthetics October/November 2020 - Geosynthetics Conf. Brochure 8
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