STRATAGRID is geogrid reinforcement for soil. These high performance geogrids are constructed of high molecular weight and high tenacity polyester yarns utilizing a complex knitting process and low temperature coating technology to provide superior engineering properties. Yarns are precision knitted into a dimensionally stable, uniform network of apertures providing significant tensile reinforcement capacity. STRATAGRID is engineered to be mechanically and chemically durable, in both the harsh construction installation phase and in aggressive soil environments (pH range from 2-10). A proprietary UV stabilized coating provides further chemical & mechanical benefits.
| PROPERTY |
TEST METHOD |
ENGLISH |
METRIC |
| Ultimate Strength |
ASTM D-6637 Method A |
9,100 lbs/ft |
132.8 kN/m |
| Creep Limited Strength |
ASTM D-5262/D-6992 |
5871 lbs/ft |
85.7 kN/m |
| Long Term Allowable Design Strength |
Sand, Silty Sand, Silt & Clay |
5,083 lbs/ft |
74.2 kN/m |
| Long Term Allowable Design Strength |
1" minus graded aggregate (Well graded gravel/sandy gravel) |
4,852 lbs/ft |
70.8 kN/m |
| Long Term Allowable Design Strength |
1.5” minus angular aggregate (Poorly graded gravel) |
4,641 lbs/ft |
67.7 kN/m |
| Molecular Weight (min.) |
GRI GG8 |
|
25,000 g/mol |
| Carboxyl End Group Count (max.) |
GRI GG7 |
|
30 Meg/kg |
| ROLL SIZE |
AREA |
WEIGHT |
| 6' x 300' |
200 sys |
190 lbs |
| 12' x 225' |
300 sys |
285 lbs |
| REDUCTION FACTOR |
VALUE |
| installation damage (Sand, Silt & Clay, D50 <1.0mm) |
1.05 |
| installation damage (1” minus graded aggregate, D50 < 6mm) |
1.10 |
| installation damage (1.5” minus angular aggregate, D50 < 20mm) |
1.15 |
| durability |
1.10 |
| SOIL INTERACTION COEFFICIENT |
VALUE |
| Gravel, Sand Gravel Mix, Well-Graded Sand (SW, GW) |
0.6 - 0.7 |
| Sandy Silts & Clay (SC,GC) |
0.7 - 0.8 |
| Uniformly-Graded Sands, Silty Sand (GP, SP, SM) |
0.8 - 0.9 |
| Gravel, Sand Gravel Mix, Well-Graded Sand (SW, GW) |
0.9 - 1.0 |
Spec Interpretation