Stair Type 01
These are closed stairs with closed stringers.
Stair Type 02
These are closed stairs with cut outer stringers.
Stair Type 03
These are open stairs with closed stringers.
Stair Type 04
These are open stairs with cut outer stringers.
Stair Type 05
These are open stairs with cut stringers.
Stair Type 06
These are open stairs with inset cut stringers.
Stair Type 07
These are open stairs with a central timber stringer.
Stair Type 08
These are semi cantilevered stairs with timber stringers.
Stair Type 09
These are stairs with a central steel stringer.
Stair Type 10
These are stairs with closed steel plate stringers.
Stair Type 11
These are stairs with steel plate zig-zag stringers.
Stair Type 13
These are stairs with a steel tray substrate.
