Define the first pipe element - CAESAR II - Reference Data

CAESAR II Applications Guide

Reference Data

Periodically click Save or File > Save as you create elements. CAESAR II also interrupts your session and prompts you to save your work 30 minutes after the last save.

Node 5-10 Pipe Element

The first pipe element runs from the pump discharge nozzle (node 5) to the centerline intersection of the 8-inch main line with the 6-inch bypass (node 10). The length of this element is 2 ft. in the Y direction.

  1. In the main window ribbon, click Home > Input > Piping Input .

    Because this is a new job, the Review Current Units dialog box again displays. Click OK to close it. A new window with command toolbars, the Classic Piping Input dialog box, and a graphic view displays.

    CAESAR II automatically generates the From and To nodes when you start a new piping element. The From box displays 5 and the To box displays 10 because you set the node increment to 5 in the CAESAR II Configuration Editor dialog box. The default -Mill Tol % value for the piping code also displays.

    The graphics view displays and updates your piping system as you define element properties.

  2. In the DY box, type 2- to specify the element length of 2 ft.

    The dash ( - ) symbol indicates feet. If you type a length without the dash, the units are inches.

  3. In the Diameter box, type 8 to specify the nominal pipe size of 8 in.

    The software replaces the nominal value with the actual outer diameter (OD) of 8.6250 in. The pipe element updates in the graphic view.

  4. In the Wt/Sch box, type S to specify standard wall thickness in inches.

    The software replaces S with the actual wall thickness of 0.3220 in.

  5. Type the following values:


    0.0313 (the corrosion allowance in inches)

    Temp 1

    600 (the maximum operating temperature in degrees F)

    Pressure 1

    30 (the maximum incidental pressure in lb./

  6. In the Fluid Density box, type 0.8SG to specify the specific gravity of 80 percent of the deadweight of water.

    The software replaces the specific gravity with the fluid density of 0.02889 lb./

  7. In the Material list, select (1)LOW CARBON as the pipe material.

    The software queries the material database and adds values for Elastic Modulus, Poisson’s Ratio, and Pipe Den. The software also references the material number to add the coefficient of expansion for the specified temperatures.

  8. In the Insul Thk box, type 3 to specify the insulation thickness in inches. In the Insulation Density list, select Calcium Silicate.

    The software replaces the insulation material type with the insulation density of 0.00666 lb./

    Optionally, type 11.5/1728 in the Insulation Density box. 11.5 is the density in lb./cu.ft. 1728 is the factor (123) to convert the density to lb./ Numeric fields allow simple math.

  9. Double-click the Displacements check box to display the Displacement tab on the right.

    5 displays as the value for Node 1.

  10. Define displacements for the thermal growth of the pump discharge nozzle from the base support (anchor) point. For anchor displacement DY in the Vector 1 column, type 0.077. For anchor displacement DZ in the Vector 1 column, type 0.046.

    The displacement vector displays in the graphic view.

  11. Type 0 for the other four degrees of freedom (DX, RX, RY, and RZ).

    If you do not assign values for DX, RX, RY, and RZ, then node 5 is free to move in these directions.

  12. Double-click the Allowable Stress check box to display the Allowable Stress tab on the right.

  13. In the Code list, select B31.3 if it is not the default selection.

  14. Type the following values:


    20000 (the cold allowable stress in psi)


    17300 (the hot allowable stress in psi)

    (1)LOW CARBON is a generic material without associated allowable stress values in the material database. You must manually define allowable stresses.

    Do not use commas when typing allowable stress values. You can use an exponential format, such as 20e3.

    You now have the following material property and allowable stress values defined:

  • If a job is new, CAESAR II first opens the Review Current Units dialog box. For an existing job, the Classic Piping Input dialog box opens directly with the first piping element active.

  • If the Units File Label box on the Review Current Units dialog box does not show Imperial units, click Cancel, and then select Tools > Configure Setup. Click the Database Definitions category and select English in the Units File Name list.