Footboard for indoor staircase

An elongated footboard for an indoor staircase, comprising:

• a substantially horizontal footstep portion having first and second ends, an upright riser integral with and extending upwardly from said first end of said footstep portion so as to define therewith a substantial L-shape, said upright riser having a reversely curved section at an upper end thereof defining a downwardly opening, inverted, substantially U-shaped hook located on an opposite side of said upright riser from said footstep portion;
• a downwardly inclined wall section integral with and extending away from said second end of said footstep portion, an upright nose wall section integral with and extending upwardly from a lower end of said downwardly inclined wall section, said upright nose wall section extending to a location above an upper surface of said horizontal footstep portion so that a hook of another similarly constructed footboard can be hooked over an upper part of said upright nose wall section to couple said footboards together, said downwardly inclined wall section and a portion of said upright nose wall section below the upper surface of said horizontal footstep portion defining an upwardly opening, substantially triangular cavity having a width and a depth;
• substantially triangular fixing pieces fixedly mounted in and substantially filling the width and depth of said triangular cavity;
• a nut affixed to each of said triangular fixing pieces so that said fixing pieces can be bolted to notchboards;
• a horizontal concrete tread on said footstep portion and extending upwardly so as to be substantially flush with the upper part of said upright nose wall section;
• and
• said footboard being free of nuts for connecting said footboard to notchboards except at said triangular fixing pieces.

An elongated footboard for an indoor staircase, comprising:

• a substantially horizontal footstep portion having first and second ends, an upright riser extending upwardly from said first end of said footstep portion so as to define therewith a substantially L-shape, said riser having a downwardly opening hook located on an opposite side of said riser from said footstep portion;
• a downwardly extending wall section at said second end of said footstep portion, an upright nose wall section extending upwardly from a lower end of said downwardly extending wall section, said upright nose wall section extending to a location above an upper surface of said horizontal footstep portion and defining an upstanding rim so that a hook of another similarly constructed footboard can be hooked over said upstanding rim of said upright nose wall section to couple said footboards together, said downwardly extending wall section and a portion of said upright nose wall section below the upper surface of said horizontal footstep portion defining a cavity having a width and a depth;
• fixing pieces fixedly mounted in and substantially filling the width and depth of said cavity;
• and
• releasable fastener means affixed to each of said fixing pieces so that said fixing pieces can be fastened to notchboards, said footboard being free of releasable fastening means for connecting said footboard to notchboards except at said fixing pieces.