System and method for hydro-demolition of concrete structures

A method for demolishing a concrete structure, comprising the steps of:

• providing a moveable concrete cutting vehicle comprising:
• a moveable and steerable carriage adapted to ride along a top, horizontal wall adjacent an outer edge of a vertical concrete structure during demolition of said vertical concrete structure;
• and
• a cutting assembly carried by said moveable and steerable carriage, wherein said cutting assembly is moveable in at least two directions with respect to said carriage, and wherein said cutting assembly is positioned with respect to said carriage to make horizontal cuts through an outer wall of said concrete structure;
• positioning said moveable concrete cutting vehicle so that said carriage is positioned on a top surface of a wall of said concrete structure and said cutting assembly is positioned on an outside of said concrete structure;
• moving said cutting assembly to perform a plurality of vertical and downwardly angled circumferential cuts through said wall of said concrete structure below said carriage;
• moving said carriage along said top surface of said concrete structure;
• and
• tipping cut blocks of said wall of said concrete structure into an interior of said concrete structure to create a new top surface of said wall of said concrete structure.