Stackable staircase

A method for assembling a staircase, comprising:

• pre-assembling at least a first and a second staircase module, each of the first and second staircase module comprising:
• a first frame member having first and second elongate vertical columns and multiple spaced-apart rungs connecting the first and second elongate vertical columns,
• a second frame member having third and fourth elongate vertical columns and multiple spaced apart rungs connecting the third and fourth elongate vertical columns,
• a first stair assembly attached to one of the multiple spaced-apart rungs on the first frame member and to one of the multiple spaced-apart rungs on the second frame member,
• a second stair assembly attached to one of the multiple spaced-apart rungs on the second frame member and to one of the multiple spaced-apart rungs on the first frame member,
• a first side brace secured between the first and second frame members such that the first side brace is disposed adjacent the first stair assembly, the first side brace including a first vertical member secured to the first elongate vertical column of the first frame member, a second vertical member secured to the third elongate column of the second frame member, and one or more diagonal members positioned between the first vertical member and the second vertical member such that the one or more diagonal members are positioned and configured to provide a handrail for the first stair assembly, and
• a second side brace secured between the first and second frame members, wherein the second side brace further comprises an access gate,
• attaching a connector post to at least a first end of each of the first, second, third, and fourth elongate vertical columns of the first staircase module;
• aligning a second end of each of the first, second, third, and fourth elongate vertical columns of the second staircase module to the first end of the first, second, third and fourth elongate vertical columns of the first staircase module, and
• attaching the second staircase module and first staircase module to one another by attaching the second end of the first, second, third, and fourth elongate vertical columns of the second staircase module to the corresponding connector posts attached to the first end of the first, second, third, and fourth elongate vertical columns of the first stair case module.

A staircase module comprising:

• a first frame member having first and second elongate vertical columns and a plurality of spaced-apart rungs connecting the first and second elongate vertical columns;
• a second frame member having third and fourth elongate vertical columns and at least one spaced apart rung connecting the third and fourth elongate vertical columns;
• a first stair assembly attached to one of the plurality of spaced-apart rungs the first frame member and to the at least one spaced apart rung of the second frame member such that the first stair assembly is disposed within the first frame member and the second frame member;
• a second stair assembly attached to the at least one spaced-apart rung of the second frame member and to one of the plurality of multiple spaced-apart rungs of the first frame member such that the second stair assembly is disposed within the first frame member and the second frame member adjacent to the first stair assembly;
• a first side brace secured between the first and second frame members such that the first side brace is disposed adjacent the first stair assembly, the first side brace including a first vertical member secured to the first elongate vertical column of the first frame member and a second vertical member secured to the third elongate column of the second frame member;
• and
• a second side brace secured between the first and second frame members opposite the first side brace such that the second side brace is disposed adjacent the second stair assembly, the second side brace including a first vertical member secured to the second elongate vertical column of the first frame member, a second vertical member secured to the fourth elongate vertical column of the second frame member, and a first access gate and a second access gate each disposed between the first vertical member and the second vertical member of the second side brace, wherein the first access gate is offset from the second access gate in both a vertical and horizontal direction within the second side brace.