Dry Cast Wall Modular Block and Geogrid System Combinations
Last update April 2024
| Dry Cast Wall Modular Block Units* | Approved Geogrid Reinforcement (by Class) | ||||||
|---|---|---|---|---|---|---|---|
| MBW Manufacturer | MBW Unit | Block Height (ft) | Block Depth (ft) | Batter (deg) | MBW 1050 | MBW 1400 | MBW 2100 |
| Allan Block | AB Classic | 0.635 | 1.0 | 6.7 | Miragrid 3XT | Miragrid 5XT | Miragrid 8XT |
| Allan Block | AB Vertical | 0.635 | 1.0 | 3.0 | Miragrid 3XT | Miragrid 5XT | Miragrid 8XT |
| Anchor Block | Diamond Pro | 0.67 | 1.0 | 7.1 | Miragrid 3XT | Miragrid 5XT | Miragrid 8XT |
| Anchor Block | Landmark | 1.25 | 1.0 | 1.0 or 3.8 | Miragrid 3XT | Miragrid 5XT | Miragrid 8XT |
| Anchor Block | Vertica | 0.67 | 0.92 | 2.0 or 4.0 | Miragrid 3XT | Miragrid 5XT | Miragrid 8XT |
| Keystone | Compac II | 1 | 1.0 | 0.0, 4.0 or 8.0 | Miragrid 3XT | Miragrid 5XT | Miragrid 8XT |
| Keystone | Compac III | 1 | 1.0 | 0.0, 4.0 or 8.0 | Miragrid 3XT | Miragrid 5XT | Miragrid 8XT |
| Keystone | Standard | 0.75 | 1.5 or 1.75 | 0.0, 4.0 or 8.0 | Miragrid 3XT | Miragrid 5XT | Miragrid 8XT |
| Rockwood | Classic 8 | 0.67 | 1.0 | 7.1 | Geostar HP 300 | Geostar HP 300 | - |
| Versalok | Nexus | 0.67 | 1.0 | 7.1 | Miragrid 3XT | Miragrid 5XT | Miragrid 8XT |
| Versalok | Nexus | 0.67 | 1.0 | 7.1 | - | Synteen SF 55 | Synteen SF 80 |
| Versalok | Square Foot Unit | 0.67 | 1.0 | 7.1 | Miragrid 3XT | Miragrid 5XT | Miragrid 8XT |
| Versalok | Square Foot Unit | 0.67 | 1.0 | 7.1 | Synteen SF 35 | - | Synteen SF 80 |
| Versalok | Standard | 0.5 | 1.0 | 7.1 | Miragrid 3XT | Miragrid 5XT | Miragrid 8XT |
| Versalok | Standard | 0.5 | 1.0 | 7.1 | - | - | Synteen SF 80 |
New Dry Cast Modular Block Wall product combinations (systems) require a submittal for the Geogrid Reinforcement and for the Modular Block. Geogrid submittals must include current NTPEP test results for ultimate tensile strength, allowable tensile strength and test results that support creep, installation damage and durability factors. Modular Block submittals require physical block characteristics, connection of the geogrid to the modular block strength testing, and documentation according to AASHTO LRFD Bridge Design Manual.