The second day of framing sees the “rim board” for the second floor installed.   The second floor is constructed by a series of “joists” or long I-beams made from Engineered wood and OSB, connected to the outside walls and load bearing members that carry the weight of the house.  The entire floor is between the ceiling of the first floor and second is quite thick and will contain the pipes, ducts and wiring for the first floor ceiling and the second floor.  These joists are then covered in sub-flooring made of OSB to make a stable platform for the second floor of the house.  Temporary steps are installed so that the work crews can easily access the new second floor.