The Pipeway Builder quickly models pipeway networks with a limited amount of user entry. This section describes the building of external pipeways. Structure pipeways and vertical pipeways are described in Structure Routing Areas ..

Models can contain multiple pipeway networks that need not be connected. An example of a basic interconnected pipeway network, and a multiple network example are shown below.

Generally pipeway networks start with a main pipeway. Secondary pipeways extend orthogonally from the main pipeway or from other secondary pipeways. The initial location of a secondary pipeway can be easily defined in terms of its primary pipeway. Once located, any pipeway (Main or Secondary) can be re-located from the Pipeway Builder or dynamically through CAD.

Pipeways may consist of multiple sections. Each section extends along the axis of the pipeway. A new section is required whenever any of the properties of the pipeway change. Such a change may be a larger bent spacing to bridge a road, a higher Lowest Level Elevation to pass over a high piece of equipment, or a change in width to accommodate more pipe. In PlantWise, each section has a first bent and a last bent. This means that the last bent of a section overlaps the first bent of the next section. In some cases this is required, such as when there is a significant width difference between the sections. The Pipeway Builder will in all cases build both the first and the last bent, but the PlantBuilder Steel MTO will remove the appropriate redundant structural members in its accounting for required steel.