Structural Design
User Guide
Sections
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Its cross-section is defined by reference to a Catalogue Profile (SPRF) element (I‑beam, T-section, Channel, and so on).
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All other aspects of its geometry are defined by setting specific design attributes (in most cases these are set automatically by AVEVA E3D™ as the model is manipulated graphically). Two of the most important attributes are the Start Position (POSS) and the End Position (POSE), since the positions of these points effectively determine the length and orientation of the item. These and some other attributes of Sections will be looked at in more detail later.
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To provide a method for referring to individual edges and faces of a Section, each is identified by a named line which runs along the length of the Section. These reference lines (which are derived from the Section’s Profile definition in the catalogue) are called P-lines. As an example, some of the most commonly used p-lines for an I-shaped Profile might be positioned and named as follows:
AVEVA E3D™ uses the concept of Nodes to represent basic analytical points within a structure. Nodes have two main functions:
