What information is NOT required on a truss design drawing?

In a truss design drawing, the primary focus is on structural elements and their performance under various loads. This involves detailing design loads that the truss must support, as well as specific measurements like slope, depth, span, and spacing to ensure the truss is constructed correctly and functions as intended. Additionally, the drawing must indicate reaction forces and their respective directions, as these are critical for structural analysis and load distribution.

The color of roofing materials, however, is not a structural consideration and does not influence the truss's performance. While aesthetic choices, such as roofing material color, may be pertinent to the overall design and visual appeal of a building, they do not impact the load-bearing capacity or the structural integrity of the truss system. Therefore, this detail is not required in a truss design drawing, making it the correct answer in the context of which information is not essential for the truss's structural assessment and design.