About the Pipe To Pipe Match Rule

This rule governs how a pipe elevation is determined in a pipe network that contains only pipes (no structures), and or when a pipe is inserted onto an existing pipe to break the pipe.

This rule applies only during the following conditions:

• Creating a pipe network that has pipes only (no structures)
• Breaking into an existing pipe with another pipe
• Connecting a pipe to a null structure (pipe to pipe connection with no structure)
• Connecting a pipe to an existing pipe end

This rule manages conditions so that only continuous runs of pipe are created as typically expected. In pipe networks where the pipe size is constant, pipes connected to other pipes must to match end to end. In pipe networks where pipe sizes change, the point where pipes match may change, depending on the type of system. For example, in pressure systems, it may be typical to match the pipe centerline. In gravity systems, it may be typical to match the crowns of the pipes.

This rule also incorporates a drop value for cases where a pipe-to-pipe connection requires a drop amount.

Parameters

The following parameters govern the behavior of this rule:

• Match Location. This parameter controls whether the inserted pipe holds to the pipe’s invert, crown, or centerline elevation (location).
• Drop Value. The drop value allows you to specify an additional drop amount at pipe to pipe connections.