Reducers can be automatically added using Draw or Insert commands. A reducer is automatically created when there is a change in pipe diameter. Using Draw Pipe command property Auto generation options you will need to specify reducer length and specify Object Offset reference start point. In this example we will draw a 20"X14" concentric reducer and then draw a 20"X14" eccentric reducer.

After drawing a 19' long run of 20" diameter piping, we switched the pipe property set from a 20" diameter pipe to a 14" diameter pipe property set and drew the length 16'. This automatically added a 20" long concentric reducer as specified in the Draw properties dialogue, followed by a 14' 4" long (16' minus 20") segment of 14" diameter piping. The 20" length of the reducer began at the 'Start point' of the diameter change as per the default Object offset reference.

In order to draw a 20"X14" eccentric reducer, we will follow a very similar approach, but we'll apply a -1.5" centerline offset in the local 2 direction, and switch off the grids to avoid inadvertently snapping to a grid intersection.

A useful modeling feature with reducers is the ability to move/slide them, in which CSiPlant will not only move the reducer, but also update pipe sizes. See example below where we select the reducer, then do Ctrl+M to move it 72" in the -X direction.

For piping codes which stress intensify reducers, select 1 or more reducers and go to Design menu>Assign Design properties and change Object type to Reducers to assign design parameters to the selected objects.

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