For an attic space, there should be an opening to that space , and a clear, unobstructed passageway large enough to allow removal of the mechanical appliance.

at least 22 inches by 30 inches.

Explanation:

For an attic space, there should be an opening to that space at least 22 inches by 30 inches (22' × 30'), and a clear, unobstructed passageway large enough to allow removal of the mechanical appliance such as an air conditioner unit.

An attic can be defined as a space or room which is found just directly below the roof of a house. An attic is a space that is often used by people to store items. It is also generally being referred to as a garret or sky parlor and sometimes it is called a loft.

According to the 2012 International Residential Code, an attic is required to have an opening space of at least 22 inches wide and 30 inches high.

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table

i believe the answer is a hope it and is correct