You combine layout lines by first selecting the layout line that you want to combine and then by dragging its Elbow/End control until the control snaps to an adjacent layout line. The layout line that was modified is automatically removed and additional layout lines are added to represent a physical connection to the component that is associated with the modified layout line. All components that are associated with modified layout lines maintain their original placement. Combining layout lines allows you to redefine your layout so that it corresponds to your design intent.
When using Modify, one custom solution is remembered for the current (modified) layout. If you later use Modify to select a different solution, a message is displayed, asking if you want to overwrite your previous solution.
Parallel Movement Control: Lets you move an entire layout line along an axis that is perpendicular to the layout line. Additional lines are automatically added when needed to maintain connections in the system. Note that you cannot use this control to overlap layout segments. You must use the Elbow/End Control.
Junction Controls:—Represents a tee. —Represents a cross. These junction controls let you move a tee or cross connection between a main and branch segment, left or right, up or down. Movement is limited to the end associated with the Junction Control symbol (see note above).
Elbow/End Control: Lets you move the intersection between 2 layout lines or the end of a layout line. This control also allows you to combine layout lines. Additional layout lines are automatically added when needed to maintain connections in the system.
Network: This solution creates a bounding box around the components selected for the duct system, then bases up to 6 solutions on a main segment along the center line for the bounding box, with branches at 90 degree angles from the main segment.
Perimeter: This solution creates a bounding box around the components selected for the system, and proposes 5 potential routing solutions. Four solutions are based on 3 of the 4 sides of the bounding box. The fifth solution is based on all 4 sides.
Intersections: This solution bases the potential routing on a pair of imaginary lines extending from each connector for the components in the system. Perpendicular lines extend from the connectors. Where the lines from the components intersect are potential junctions in the proposed solution. Up to 8 solutions can be proposed along the shortest paths.
Inset: Specifies the distance between the bounding box and the components in the system. You can specify a positive or negative value to place the perimeter within or outside of the bounding box, respectively.
To use the base control, place the base control where the open duct connection will be located for the layout. You can also place a base control to connect the layout sub-assemblies. If the base is on the same elevation as the open connections, a horizontal pipe or duct will connect to the open sub-assembly connections. If the base control is placed on a different elevation from the open connections, a pipe or duct riser will be created to connect the layouts.
Rotate Perpendicular to Connection Direction: Rotates the base control around and perpendicular to the base control connection direction axis (the connection direction is indicated by an arrow in the 3D view).