Woodworking how to calculate the square

There are two types of square footage in carpentry, the occupied area and the unfolded square of the wooden mold.

The square footage is the area of the ground that the building occupies (almost the same for each floor of a high-rise)

The square footage of a wooden mold is calculated according to the concrete contact area of the formwork. Simply put, it is length X width width X height

However, only a little bit of the square footage you do can be measured in the field (the total number of columns, beams, roof slabs - go to the mouth of the beams is it)

If you count a building, you have to know how to read the drawings. The columns, floor plans, beams, construction drawings ~ in short, the end of the construction is to understand all the drawings to be able to do.