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| Number | Title | Issue Date |
| 5178493 | Counterfort wall A prefabricated concrete facing panel is connected to a prefabricated counterfort by way of a pair of bolted connections. Each connection includes a bolt projecting rearwardly from the panel and passing through a hole provided in a connecting arrangement ... | 01/12/1993 |
| 5156496 | Earth structures An earth structure has a facing formed of a plurality of laterally spaced support members. The top and bottom of each support member is connected to a stabilizing element that extends rearwardly into an earth mass. A mesh cover extends between adjacent su... | 10/20/1992 |
| 5144779 | Joining of a concrete element to a support A concrete facing panel is joined to a counterfort by means of a pair of bolted joints. Each joint comprises a hole in the panel through which a bolt projecting from the counterfort passes, and a nut mounted on the threaded end of the bolt. A resilient pl... | 09/08/1992 |
| 5040928 | Facings for earthworks A facing for an earthwork includes an array of polygonal frames that are connected to the forward ends of stabilizing elements which are embedded in the soil. The polygonal frames are flexibly connected to each other at their corners by joints which allow... | 08/20/1991 |
| 5033912 | Earth stabilization A stabilized earth structure includes a front face and a plurality of layers of reinforcements that extend rearwardly from the front face. Individual layers of compacted earth are disposed between the layers of reinforcements. The frictional force that is... | 07/23/1991 |
