Geogrid Pullout Box GRI GG5 AR-S-GG5-250

- Carbon steel test box 48" X 36" 48" (91 X 120 X 120 cm) adjustable opening in the
front to allow for test geogrid positioning. Box is painted with corrosion resistant
paint. A HDPE liner is secured to the inside of the box to reduce friction. (silk or
nylon fabric is recommended to further reduce friction. Box has drainage ports to
relieve water extracted from the soil)
- Pneumatic loading bladder with a 48" X 48" X 9" (120 X 120 X 23cm)
max pressure 45 psi (310kPa ) Over 100,000 pound(444,800N) load
- Pressure controlled via a precision "constant bleed" regulator
- Loading pressure measured & displayed with a pressure transducer and scaleable
display meter featuring an RS232 output
- Sample grip consists of bolted clamp bars with adjustable linkage to secure to the
drive system
- Electric pull out drive with 20,000 pound (88,900N) cap X 6"(150mm) travel. Variable
speed (1 mm/minute)
- Pull out force measured & displayed with a 20,000 pound (88900 N) capacity load
cell and scaleable display meter featuring an RS232 output
- Digital travel of the pull out drive

Pull out Box Options:

- Software and hardware to connect the pull out load cell, normal load, and pull out
travel
AP-C-DA-200

- Analog indicators and mounts to monitor additional positions on the sample (2" X
0.001")
AR-C-GG5-100

- Digital indicators and mounts to monitor additional positions on the sample (2" X
0.001")
AR-C-GG5-125

- Software and hardware to accept up to 4 additional indicator inputs
AP-C-DA-200A

Additional Pull Out Box Custom Considerations

- Lower Loading Bladder -Additional Pull out Force -Additional Loading
Pressure
- Alternate loading methods lbs/in/min (N/mm/min), incremental stress
constant stress
- Alternate Box/ Sample Size

GRI GG5 Geo Grid Pull out

Box Size (W X H X L) (30" X 24" X 48") ( 30 X 60 X 120 cm) minumum

48" X 36" 48" (91 X 120 X 120 cm)

Sample Size

Up to 1 meter wide and 1 meter long

Loading Method
Bladder(s) (top or top & bottom) (air or air over water)

Max confining Pressure
30 psi (200kPa) use precision constant bleed regulator

Max pull out load 20,000 pounds (88,900N)

Displacement Length 12" ( 300mm )

Displacement System (electric/ hydraulic drive)
1mm / min Minimum speed
Alternate loading methods
lbs/in/min (N/mm/min)
incremental stress
constant stress

Displacement Measurement + length
Digital Indicator
LVDT

Data Acquisition
Merersoft plus multi-plexer for the displacement and load

Pull out load measurement
20,000 load cell and display

Bolted Clamp Bar with swivel connection to the loading ram

320 N. Railroad St.

P.O. BOX 49

320 North Railroad Street

RUSHVILLE, IL. 62681

Telephone: (217) 322-3768

Fax: (217) 322-3767

E-Mail: bttech@frontiernet.net