Patent ID: 7631463

Claim:
A stair structure comprising: a stair stringer comprising: a sloping bottom surface; a stepped top surface including a plurality of alternating and consecutive treads with a length and risers with a height, the treads horizontally oriented and the risers vertically oriented orthogonal to the treads, the tread length and riser height together defining a stringer slope; and a first end near a bottom landing and a second end near a top landing, the second end comprising a last tread intersecting with a substantially vertical abutment face, the abutment face intersecting with the sloping bottom surface, the intersection of the abutment face and the sloping bottom surface defining a work point; a structural member forming an edge of the top landing, the structural member having a top edge and a bottom edge defining a depth there between and further having a front face; and a connector connecting the stair stringer to the structural member, the connector being structurally rated for conditions where, at a connection point between the stringer and the structural member, the bottom surface of the stringer is below the bottom edge of the structural member, the connector including: a base with a first end and a base flange connecting side edge, the base having a plurality of connecting member receiving openings, the connecting member receiving openings including at least one positioning opening for positioning the connector vertically relative to the structural member; a seat having a seat flange connecting side edge, the seat bendably connected to the base along the first end; a base flange orthogonally connected to the base along the base flange connecting side edge; and a seat flange orthogonally connected to the seat along the seat flange connecting side edge; wherein: the stair stringer is positioned such that the last tread is positioned relative to the top edge of the structural member a vertical distance equal to the riser height and the abutment face is positioned adjacent to the front face of the structural member; and the first end of the base is positioned at the work point and the at least one positioning opening is located in alignment with the bottom edge of the structural member.