Tire Chips: The tire chips will be stockpiled and trucked to the test sites. A
bulldozer will be used to spread the tire chips.
Tire Chips with a geotextile separator: The tire chips will be stockpiled and
trucked to the test sites. Prior to dumping the tire chips, a geotextile will be
placed on the subgrade by hand (also see section on Construction Guidance--
geosynthetics). A bulldozer will be used to spread the tire chips.
Debris/Slash: The debris/slash will be stockpiled and trucked to the test section
by dump truck or another means chosen by the National Guard. The debris/
slash will be placed and matted down by construction equipment to form a
compact and uniform layer. The maximum log size allowed is 8 in. diameter.
Debris/Slash with geotextile separator: Prior to placing the debris/slash as
directed above, a geotextile separator will be placed on the subgrade by hand
(also see section on Construction Guidance--geosynthetics).
Terra Mat CM 420: These are truck tire sidewalls that are fastened together to
form a tire mat 20 ft long and 5 ft, 3 in. wide. A mat is placed in each wheel
track. The mats weigh approximately 1,100 lb each. The mats will be placed by
a SEE (loader/backhoe).
Terra Mat TMC 410: These are truck tire sidewalls and tread that fastened to-
gether to form a tire mat 10 ft long and 5 ft wide. The mats weigh approxi-
mately 1100 lb each. A mat is placed in each wheel track. The mats will be
placed by a SEE (loader/back hoe).
Wooden mats: The wooden mats will be constructed by the National Guard on 17
March. Materials will be stock piled at Ft. McCoy. Approximately 200 feet of
mats are required. Detailed construction procedures will be provided at the
briefing on 16 March.
Double-sided geonet: This is a three-dimensional geonet (an HDPE mesh) sand-
wiched between two needle-punched geotextiles. The material comes in rolls
12 ft wide and between 150 and 300 ft long.
Geosynthetic geogrid: A planar synthetic, such as HDPE, with relatively large
apertures (e.g., 13 in. square), made to reinforce weak soils. The material
comes in rolls 12 ft wide and between 150 and 300 ft long.
PVC Pipe Fascine: The PVC pipe fascine will be constructed by the National
Guard on 17 March. The fascine is constructed by connecting 3 and 4 in. PVC
pipe together using 3/16 in. steel cable. One section is approximately 8 ft long.
Detailed construction procedures will be provided at the briefing on 16 March.
Materials will be stockpiled at Ft. McCoy.
CONSTRUCTION GUIDANCE--GEOSYNTHETICS
Storage
The geosynthetics should be kept in protective plastic, indoors, until they are
transported to the test site.
Handling and transport
The geosynthetics should be handled carefully, so as not to damage the prod-
ucts prior to testing. The use of forklifts for loading and unloading the products is
recommended.
Construction
All sections
1. Woody vegetation should be cleared as square as possible at the ground
surface. Roots and stumps do not need to be removed.
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