Which code corresponds to a 4/12 slope truss?

A truss with a slope of 4/12 indicates a specific rise-to-run ratio, which is significant in understanding its design and application in construction. A 4/12 slope means that for every 12 units of horizontal run, the truss rises 4 units. This corresponds to a relatively moderate incline, commonly used in residential roofing and various structural applications where moderate angles are beneficial.

The code for a 4/12 slope truss is designated as FRM TR4, indicating that it has been categorized for this particular slope in a classification system used for truss descriptions. This designation facilitates clear communication about the design and specifications of the truss among architects, engineers, and builders, ensuring that everyone involved in the construction process understands the intended design based on the slope.

The other codes would refer to trusses with different slope ratios or structural designs. Understanding the slope of a truss is crucial for its performance, load-bearing capacity, and aesthetic integration with the building's overall architecture. Thus, FRM TR4 appropriately describes the truss with a 4/12 slope, making it the correct choice in this context.