They are generally different. A "ground beam" refers to a "grade beam", a beam that typically spans poor soil conditions to connect two or more other foundation elements to support a slab or walls that would otherwise not be supportable by the soil.
In masonry construction, a "tie beam" is an intermediate beam used at floor levels and roof levels to provide lateral continuity of the masonry and to "tie" the tie columns or end walls to prevent lateral movement. In wood or other framing systems a "tie beam" (also called a collar beam or collar tie) is a beam section that prevents two structural members from spreading apart, such as roof rafters.
In masonry construction, a "tie beam" is an intermediate beam used at floor levels and roof levels to provide lateral continuity of the masonry and to "tie" the tie columns or end walls to prevent lateral movement. In wood or other framing systems a "tie beam" (also called a collar beam or collar tie) is a beam section that prevents two structural members from spreading apart, such as roof rafters.
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