polyethylene and polypropylene geosynthetics, 1.15 for coated polyester
geogrids, and 1.6 for polyester geotextiles. The creep reduction factor
must be consistent with the test procedure used for determining the
ultimate strength.
2.2.3.2
Connection Strength
The connection strength between the blocks and reinforcement determined in
accordance with ASTM D 6638 shall have connection strength meeting the
following minimum requirements:
Minimum Peak Connection Strength = [_____] kN/m lbs/ft
Friction Angle for Peak Connection Strength = [_____] degrees
Minimum Service State Connection Strength = [_____] kN/m lbs/ft
Friction Angle for Service State Connection Strength = [_____]
degrees
2.3
GEOTEXTILE FILTER
Geotextiles used as filters shall meet the requirements specified in Table
2. The property values (except for AOS) represent minimum average roll
values (MARV) in the weakest principal direction. For survivability during
installation, the geotextile shall meet the minimum requirements in AASHTO
M 288 Class 2, and shall have a minimum mass per unit area of 270 g/m2 8
oz/sy.
TABLE 2. GEOTEXTILE PHYSICAL PROPERTIES
PROPERTY
TEST REQUIREMENT
TEST METHOD
Grab Tensile, N
[700 nonwoven]
ASTM D 4632
[1100 woven]
Apparent Opening
[150 - 212]
ASTM D 4751
Size (m)
Permittivity,
[0.5]
ASTM D 4491
sec-1
TABLE 2. GEOTEXTILE PHYSICAL PROPERTIES
PROPERTY
TEST REQUIREMENT
TEST METHOD
Grab Tensile, lbs.
[160 nonwoven]
ASTM D 4632
[250 woven]
Apparent Opening
[70 - 100]
ASTM D 4751
Size (U.S. Sieve)
Permittivity,
[0.5]
ASTM D 4491
sec-1
2.4
SOILS AND AGGREGATES
**************************************************************************
NOTE: Drainage Aggregate and Aggregate Base - The
designer may substitute a gradation readily
available in the locality, such as state standard
specifications for road construction.
SECTION 02832
Page 19
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