In masonry structures, a buttress, spur wall, pier, or projecting portion, extending upward from the foundation or from the inner face of a basement, abutment, or retaining wall to provide additional resistance to thrust.
In masonry structures, a buttress, spur wall, pier, or projecting portion, extending upward from the foundation or from the inner face of a basement, abutment, or retaining wall to provide additional resistance to thrust.