11/09/2025
This shows how the walls were built in the Nicholson home. Also explains why these historic homes burn so quickly. It creates a wind tunnel effect that provides one of the primary things needed for fire to spread.
The image depicts a section of a balloon-framed wall under construction. Balloon framing is a historical method where wall studs run continuously from the sill plate to the roof. The image is a diagram or illustration, likely for educational purposes.
Key Features and Components:
* Sill Plate: The horizontal timber at the bottom of the frame, resting on what appears to be a concrete foundation. It provides a base for the wall framing.
* Studs: These are the vertical wooden members that make up the wall's framing. They run continuously from the sill plate to the top plate. Note that they're spaced at regular intervals (likely 16" or 24" on center, but this cannot be confirmed by the image alone).
* Let-in Ledger: A horizontal piece of lumber that is inset into the studs. It serves as a support for the second-floor joists in balloon framing. This replaces the need for headers and jack studs. The arrow on the image is pointed toward it.
* Opening Framing: The image shows a framed opening (presumably for a window). The horizontal members above and below the opening are called the header and the sill, respectively. Shortened studs, called cripple studs, are used above and below the opening to fill in the space between the header/sill and the top/sole plates.
* Top Plate: The horizontal framing member that sits atop the studs. It provides a surface for attaching the roof framing.
* Roof Framing: The image also shows the rafters that make up the roof structure. Note how the rafters bear directly on the top plate.
Characteristics of Balloon Framing:
The image highlights the key characteristics of balloon framing:
* Continuous Studs: The defining feature. This can create a fire hazard as it allows flames to spread quickly up the wall cavity.
* Let-in Ledgers: Used for second-floor support instead of a traditional platform framing system.
Text Overlay:
The text explains the purpose of the let-in ledger and mentions that conventional headers, jacks, and kings may be needed when enlarging existing openings.
In Summary:
This image is a good illustration of balloon framing. It provides a visual understanding of the structure. The let-in ledgers, as opposed to the common headers and jack studs in platform framing, make this type of framing unique and relatively historical.
