Reducers - CAESAR II - Reference Data

CAESAR II Applications Guide

Reference Data
  1. Define the reducer length as you would any pipe element.

    For eccentric reducers, skew the element so that the To node matches the centerline of the following pipe elements.

  2. Double-click the Reducer check box on the Classic Piping Input dialog box.

    If the elements preceding and following the reducer are already defined (such as if you are inserting this element) then CAESAR II automatically calculates all of the reducer input data. In that case, leave the Reducer Auxiliary Data tab fields blank.

  3. Type the diameter and wall thickness of the pipe that follows the reducer.

    • You can type nominal diameter and wall thickness and CAESAR II will convert these to actual diameter and wall thickness if this option is activated in the units file. (If the Diameter and Wt/Sch boxes on the Classic Piping Input dialog box convert nominal to actual, then the Reducer Auxiliary Data tab boxes will also make this conversion.)

    • Alpha is the slope of the (concentric) reducer transition in degrees. If unspecified, CAESAR II calculates alpha using 60 percent of the entered reducer length.

Alpha = atan[ (D1-D2) / (2*length of the sloped portion of the reducer*0.6) ]

IGE /TD -12 requires entry of the reducer Alpha as well as R1 and R2 (the reducer transition radii of the large and small ends).