Patent ID: 6931797

Claim:
A first voussoir for use in an arched structure between second and third voussoirs, said structure having a defined horizontal span, said first voussoir comprising: a) an intrados surface and an extrados surface, each of said surfaces extending between first and second end hearing surfaces; wherein: (i) said first end bearing surface includes a protrusion extending from the surface, said protrusion being mateable with a corresponding recess in an abutting end bearing surface of said second voussoir, and (ii) said second end bearing surface includes a recess in said surface, said recess being mateable with a corresponding protrusion in an abutting end bearing surface of said third voussoir; b) a first connector secured to said first voussoir in or at said extrados surface of said first voussoir for connecting one end of a first flexible tension member to said first voussoir; and, c) a second connector secured to said first voussoir in or at said first end bearing surface of said first voussoir for connecting one end of a second flexible tension member to said first voussoir.