Final answer:
The framing method where each level of a house is constructed separately is known as platform framing. It involves building each floor on top of the one below, with construction progressing systematically from the foundation to the roof.
Step-by-step explanation:
The kind of framing that involves each level of the house being constructed separately is called platform framing. In platform framing, also known as stick framing, builders construct each floor on top of the one below it, which acts as a platform for constructing the next level. This method contrasts with balloon framing, where the wall studs run the full height of the building from the foundation to the roof.
Platform framing starts with laying a foundation, followed by erecting the ground floor's walls. Once this level is complete, the floor for the next level is constructed, providing a base for the next set of walls. This process repeats until all floors are completed. The roof is then added at the very top. Platform framing provides stability, as each level supports the next, and it has become a standard practice in residential construction due to its efficiency and safety.