Type IV construction, where each floor is built as a separate unit from the floors below and above, is identified as which broader construction approach?

Type IV construction, where each floor is built as a separate unit from the floors below and above, is identified as which broader construction approach?

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

Answer: (C)

Platform construction is built floor by floor, with each level formed as its own horizontal platform on top of the walls below. This per-story assembly means the floors are completed as separate units before the next level goes up, which is exactly what’s described for Type IV construction. Balloon framing places continuous wall studs from the foundation to the roof, so floors aren’t treated as distinct platforms. Post-and-beam relies on a framework of large timbers with floors spanning between the vertical members, rather than stacking separate platforms for each story. Timber frame is a broader framing approach that can include heavy timber practices, but the specific floor-by-floor platform arrangement is the hallmark of platform construction.

Platform construction is built floor by floor, with each level formed as its own horizontal platform on top of the walls below. This per-story assembly means the floors are completed as separate units before the next level goes up, which is exactly what’s described for Type IV construction. Balloon framing places continuous wall studs from the foundation to the roof, so floors aren’t treated as distinct platforms. Post-and-beam relies on a framework of large timbers with floors spanning between the vertical members, rather than stacking separate platforms for each story. Timber frame is a broader framing approach that can include heavy timber practices, but the specific floor-by-floor platform arrangement is the hallmark of platform construction.