It can be often misunderstood whether a Truss Design Engineer has the responsibility to seal a Truss Placement Diagram (TPD). Certain jurisdictions in the United States are requesting engineering seals on TPDs (also known as a truss placement plan, truss layout, framing plan or framing layout). This guide provides insight into why component manufacturers should seriously consider all the ramifications of providing seals on TPD for projects. 

For additional information regarding TPD applicable to the following, please see: