A tower foundation system for supporting a tower includes a base that defines an open receptacle for receiving a ballast material. The system also includes a cross-member that extends within the open receptacle between opposing sides of the base. Additionally, the system includes a tower coupler that is coupled to the cross-member. The tower coupler is configured to couple a tower to the cross-member
* 2002/0017,068 Foundation element, methods for the construction of prefabricated structures including these elements, particularly prefabricated tunnels, and prefabricated structures made by these methods
* 6408581 Foundation element, methods for the construction of prefabricated structures including these elements, particularly prefabricated tunnels, and prefabricated structures made by these methods
* 7823348 Device and method for the support of both steel and precast concrete wall posts for installation
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