Building Tech Preboard Practice Test

A Howe truss is characterized by its arrangement of diagonal and vertical members, which fundamentally distinguishes it from a Pratt truss. In a Howe truss, the diagonal members slope upwards from the support to the center of the truss and are primarily in tension. This configuration effectively manages forces during loading and helps distribute the weight adequately across the structure.

The use of tension in the diagonal members contributes to the overall structural integrity and stability of the Howe truss, making it suitable for various applications, especially in longer spans. This is contrasted with the Pratt truss, where the diagonal members slope downward towards the center of the truss and are primarily in compression. Therefore, the defining characteristic of how a Howe truss handles forces, particularly the tension in its diagonal members, is key to understanding its structural behavior compared to a Pratt truss.