Geosynthetics February/March 2020 - 24

U.S. Bank Stadium geosynthetic reinforced stress relief wall

FIGURE 2 RSS typical section
FIGURE 3 RSS
typical facing

diversion around tower cranes, and
diversion around pedestrian bridge piles
and pile caps.
The RSS was completed during the
later phases of U.S. Bank Stadium construction in the spring of 2015. Shortly
after RSS completion and before precast panel placement, an approximately
30-foot (9.1-m) long portion of the RSS
face was damaged from heat created by
a fire that started as a result of welding
sparks falling from roof construction
and igniting the polystyrene insulation installed along the building CMU
foundation wall. The authors and the
RSS contractor investigated the firedamaged portion of the RSS. The wall
was repaired with percussion driven
anchors, a welded wire mesh and a shotcrete facing.

Initial RSS design
Located in downtown Minneapolis, the
stadium site is in a constrained location
adjacent to Chicago Avenue that required
a minimal excavation width for installation of the RSS geogrid reinforcement.
The stadium plan included a 700-foot
(213.4-m) long RSS stress relief wall
concept-level design. The RSS would
be subjected to relatively large surcharge loads from temporary shoring
and mobile cranes during construction
and from emergency service vehicles
long-term. The RSS was designed to
support a 15-kip (66.7-kN) point load
due to temporary shoring placed during construction, an 800-psf (38.3-kPa)
distributed load from large construction/
maintenance equipment, and a 4,500-lb/
ft (6.1-kN/m) strip load from the voidspanning concrete slab and potential
emergency service vehicles.
From these limiting factors, it was
determined that a granular material with
a friction angle of at least 35˚ would
be required for the RSS reinforced fill,

24

Geosynthetics | February March 2020



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
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