If wall framing is built one floor at a time, what framing method is being used?

If wall framing is built one floor at a time, what framing method is being used?

• A. Platform
• B. Balloon
• C. Post-and-beam
• D. Timber frame

Answer: (A)

Platform framing is used when wall framing is built one floor at a time. Each level is constructed as its own platform, with the wall studs erected on top of the previous floor’s platform and sheathing, then the next floor built above it. This creates modular, sequential construction and is the standard method for modern wood-frame buildings. Balloon framing would have studs running continuously from the foundation to the roof across multiple stories, so it doesn’t fit the one-floor-at-a-time description. Post-and-beam and timber frame rely on large timber members rather than the lightweight stud walls built floor by floor.

Platform framing is used when wall framing is built one floor at a time. Each level is constructed as its own platform, with the wall studs erected on top of the previous floor’s platform and sheathing, then the next floor built above it. This creates modular, sequential construction and is the standard method for modern wood-frame buildings. Balloon framing would have studs running continuously from the foundation to the roof across multiple stories, so it doesn’t fit the one-floor-at-a-time description. Post-and-beam and timber frame rely on large timber members rather than the lightweight stud walls built floor by floor.