Platform Frame

Definition

A platform frame is a wooden building frame composed of closely-spaced members nominally 2 inches in thickness, in which the wall members do not run past the floor framing members. It is a typical wood stud wall framing method where the studs are one level in height and the floor framing above rests on the top plates of the wall below.

Purpose

Platform framing is used to construct residential and light commercial buildings. This method allows for efficient and economical construction, providing stability and ease of assembly. Each floor acts as a platform for constructing the next set of walls, which simplifies the building process.

Examples of Use

• Residential Homes: The most common framing method for single-family homes.
• Multi-Family Housing: Used in the construction of townhouses and apartment buildings.
• Light Commercial Buildings: Applied in the construction of small commercial structures such as offices and retail spaces.

Related Terms

• Balloon Frame: An older method of framing where the wall studs run continuously from the foundation to the roof.
• Stud Wall: A wall constructed with vertical members (studs) that support the structure.
• Top Plate: The horizontal member at the top of a wall frame that supports the floor joists or roof structure.

Notes

• Construction: Platform framing allows for easy construction of each floor level, providing a working platform for builders.
• Fire Stopping: The construction method inherently includes fire stops at each floor level, enhancing safety.