Bend Tables
Piping uses bend tables to accurately calculate the length of straight pipe (developed length) required to make a bend of a specific bend radius and angle.
The developed pipe length for the same bend can differ due to different materials and pipe outside diameters (OD).
Bend tables are normalized for 90–degree bends. The values other than 90 degrees are multiplied by A/90, where A represents the specific bend angle in degrees.
Piping allows you to define new bend tables. You can define bend tables for 90–degree bends. The values other than 90 degrees are multiplied by A/90, where A represents the specific bend angle in degrees.
You do not have to insert a bend allowance value (A) in every cell in a bend allowance table. If you leave a particular cell blank, the system calculates the length value using interpolation.
The following table describes the piping bend table format:
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Column 1
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Column 2
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Column 3
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Column 4
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…
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FORMULA
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equation
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...
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ENDFORMULA
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!
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CONVERSION
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equation
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...
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START MATERIALS
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MATERIAL
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...
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END MATERIALS
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!
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TABLE
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radius
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radius
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radius
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radius
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radius
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outside diameter
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bend allow
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bend allow
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bend allow
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...
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outside diameter
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...
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...
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...
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...
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• Enter the words FORMULA, END FORMULA, CONVERSION, END CONVERSION, START MATERIALS, END MATERIALS and TABLE exactly as shown.
• The following definitions apply for the above bend table format:
◦ FORMULA—An equation for the developed length.
◦ TABLE—A combination of pipe outer diameter (OD) and bend radius table data that will never be encountered in your pipe assembly. For example, 0.25 bend radius with an OD of 0.5 inches.
• Comment lines can appear anywhere in a bend table. Each comment line in the table must start with an exclamation point (!).
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Bend Table Menu
The Bend Table menu allows you to access all the Piping bend tables for creation and modification.
From the BEND TAB menu (Set Up > Bend Table), you can perform the following tasks:
• Define —Creates piping bend tables.
• Edit—Modifies piping bend tables. You can update a bend table at any time.
• Delete—Deletes piping bend tables.
• Show—Displays piping bend tables. You can confirm bend table data.
• Read—Reads a bend table from a file to a part.
• Write—Writes a bend table from a part to a file.
To Define a Bend Table
1. Click Setup > Bend Table > Define.
2. Type a bend table name and click
. A Pro/TABLE window opens containing a table outline.
3. Enter the data in the table.
or
Select File > Read to use an existing bend table as a baseline. The Read File dialog box opens.
Enter the name of the existing bend table file and click OK. The system reads the file data and writes it to the current bend table file. Modify the bend table data, if needed.
4. Click File > Save and Exit to save and close the bend table. You must now assign the new bend table to a pipe segment or line stock to use it.
To Modify a Bend Table
Piping allows you to modify bend tables .You can update a bend table at any time. You can edit only those bend tables created in the current assembly or applied to the current assembly. To modify a bend table within piping, do the following:
1. Click Setup > Bend Table > Edit. The TBL NAMES menu appears.
2. Select the bend table to modify from the TBL NAMES menu. This menu lists all bend tables that were applied to the assembly or were created when the assembly was currently in session.
3. A Pro/TABLE window opens and displays the selected table.
4. Modify the bend table.
5. Click File > Save or Exit. Piping saves the bend table in the current directory.
|  You must assign a bend table to a pipe segment or line stock to use it. |
To Delete a Bend Table
1. Click Setup > Bend Table > Delete.
2. Select the bend table to delete from the TBL NAMES menu. This menu lists all bend tables that were applied to the assembly or were created when the assembly was currently in session. Piping deletes the selected bend table.
To Show a Bend Table
Piping allows you to show or view a bend table. Note that if you select to show a table, you cannot modify it. To show a bend table, follow these steps:
1. Click Setup > Bend Table > Show.
2. Select the bend table to show from the TBL NAMES menu. This menu lists all bend tables that were applied to the assembly or were created when the assembly was currently in session.
3. A Pro/TABLE window opens and displays the selected bend table.
4. After viewing the table, click File > Exit. The Pro/TABLE window closes.
To Read a Bend Table to a Model
You can read a bend table from a bend table (.bnd) file into a model. Piping creates a bend table from the file data and applies it to the current model.
1. Click Setup > Bend Table > Read. The DATA FILES menu appears.
2. Select a bend table name. Piping lists all saved bend tables. If you select Names, the Open dialog box opens in which you select a bend table (.bnd) file to read. A confirmation message appears in the message area.
To Write a Bend Table to a File
Piping saves each bend table that you define to the current model. If you want to save a bend table to a separate file, you can write it to a bend table (.bnd) file.
1. Click Setup > Bend Table > Write. The TBL NAMES menu appears.
2. Select the bend table to modify from the TBL NAMES menu. This menu lists all bend tables that were applied to the assembly or were created when the assembly was currently in session. A confirmation message appears in the message area.