Patent ID: 8863455

Claim:
A unitized precast grillage foundation for supporting an electronical transmission tower comprising: a plurality of anchoring elements defining a grid for resting on an underlying surface; a base connected on the grid, the base comprising at least a first footing and a second footing spaced apart and at least one connecting member between and connected to the at least first footing and the second footing; and a beam-column projecting upwardly from the base, wherein the at least one connecting member and beam-column form an inverted T-shape cross-section connected between the at least first footing and the second footing, wherein the beam-column further comprises a telescopic system located at the top of the beam-column connectable to the structure to be supported, and wherein the telescopic system comprises a plate embedded to the top of the beam-column with a central hole, and an adjustable steel section being received within the central hole and connected to the plate, wherein the adjustable steel section includes a top steel plate connection connectable to the structure to be supported.