This architectural drawing is Typical longitudinal section of warehouse in detailing. A truss is a structure that consists of a collection of structural elements connected at pin joints or nodes. In theory, the pin joints provide no rotational resistance and behave as hinges. A roof truss is considered the most important key component in engineering system in a building. They serve a critical function and design depends on various factors. Without roof, buildings would be exposed to all kinds of elements, rendering them completely useless. For more information and details download the drawing file.