[54] MODULAR WALL BLOCK SYSTEM AND GRID CONNECTION DEVICE FOR USE THEREWITH
[75] Inventor: Philip D. Egan, Atlanta, Ga.
[73] Assignee: The Tensar Corporation, Morrow, Ga.
[21] Appl. No.: 204,941
[22] Filed: Mar. 2, 1994
[51] Int. CI.6 E02D 29/02
[52] U.S. CI 405/262; 405/284; 405/258
[58] Field of Search 405/258, 262,
405/273, 284, 285, 286; 52/605, 606
[56] References Cited
U.S. PATENT DOCUMENTS
A modular wall block is formed with recesses or troughs in a rearward end of its top and/or bottom surface configured to receive forward portions of a rigid grid connection device. Rearward end portions of the grid connection device extend beyond the rear face of the modular wall blocks. Extended lengths of a polygrid material are then secured to the rearward portions of the grid connection device for reinforcing the fill behind a retaining wall formed from a plurality of courses of said wall blocks. The grid-to-block connection does not rely on the weight or friction of superimposed wall blocks and is particularly effective in sites subject to seismic activity.
33 Claims, 7 Drawing Sheets
