Which form of Type V construction has become the most common wood construction?

• A. Balloon Framing
• B. Post and Beam
• C. Platform Construction
• D. Timber Frame

Answer: (C)

Type V wood-frame construction is defined by light, combustible framing, and the method that has become the standard is platform framing. This approach builds each floor as a separate platform, using short studs and standard plywood or OSB sheathing. It’s economical and fast because it relies on readily available lumber and simple connections, and it easily accommodates insulation, wiring, and plumbing between floors. The method also provides practical fire separation between levels, which aligns well with modern codes.

Balloon framing, with continuous vertical studs from ground to roof, was common in the past but is less practical today due to insulation challenges and longer pieces of lumber. Timber frame and post-and-beam use large, traditional timber members and skilled joinery, making them more specialized and costly for typical homes. Platform framing became the go-to because it combines speed, cost-effectiveness, and compatibility with contemporary construction practices.