Additional Modification Options

• To make additional modifications click on the icon on the Hanger form.

  The Modify Hanger form is displayed.

  

  Note: Some of the buttons shown are deactivated because they are not applicable to the current hanger configuration. The action of all buttons is described later in the section.

Changing rod lengths

The hanger type associated with the hanger form is a fixed single hanger with a turnbuckle and two rods.

You can:

• Change the rod lengths.

• Make the rod lengths equal.

• Change the hanger’s configuration (still leaving it as a fixed hanger).

• Transform the fixed hanger to a variable hanger.

Each of these options is discussed in detail. As you proceed, additional buttons become activated and are explained.

1. To change the rod length, enter the required length in the appropriate input field. The rod length is modified accordingly.

   Each rod has a minimum and maximum allowed length. These values depend on the limits set by the MDS Administrator. Refer to the MDS Administrator Guide for further information.

   Changing the length of one rod automatically updates the length of the other rod, such that the total hanger height does not change.

2. To make the rods lengths equal, click on the icon.

Modifying the hanger configuration

You can change the hanger configuration with the following restrictions:

• The new and existing configurations must have the same basic connection types. A configuration in which the hanger is connected to the pipe using a pipe clamp can have its configuration changed to a similar configuration with a different type of pipe clamp. However this configuration cannot be changed to a hanger with a connection to a pipe lug or an elbow trunnion. The converse situations are also true.

• If the type of connection to the steelwork of the new configuration is different from that of the existing configuration, the application prompts you to identify the steelwork section(s) accordingly.

To modify the hanger configuration:

3. Click on the icon.

   The fixed hanger configurations form opens with the appropriate filter is activated. In this case it is the first filter ().

4. Select a new configuration from the displayed filtered list, or click on another filter button and select another type of configuration.

5. For the purpose of this particular explanation, select the T3 M2 B6 configuration from the filtered list.

   The activated filter is not being changed. The application therefore tries to replace the current hanger configuration with the new configuration based on the current pipe and beam connections.

   If the new configuration has a different beam connection (for instance a double channel connection two beam connection for a double hanger), then the application prompts you to identify the beam(s) for the new connection type.

6. Click on the T3 M2 B6 hanger configuration.

7. Click OK.

   The fixed hanger configurations form closes and the hanger form is re-displayed.

   Note: The title of the form changes to reflect the new configuration.

8. Click on the icon.

   The Modify Hanger form is displayed.

   The rod lengths are deactivated and cannot be changed because the T3 M2 B6 configuration has a fixed length welded eye rod. The bottom rod length cannot be changed either because to do so would change the total height of the hanger.

Changing the hanger type from Fixed to Variable

To change the hanger type from Fixed to Variable:

9. Click on the icon.

   The hangers configuration form is displayed.

   The form lists only variable hanger configurations. The active filter is the single-hanger filter () because this is a single-hanger and the application assumes that in most cases you will modify the configuration within the same hanger category. You can change the category by clicking on a different filter icon. For the purposes of this explanation, the default filtered list is used.

10. Select the T10 M2 B6 configuration.

11. Click on OK.

    The hanger configurations form closes and the hanger form opens. The hanger configuration changes and now contains a variable spring and a turnbuckle.

12. Click on the Modify icon .

    The Modify Hanger form is displayed and a new icon has been activated.

13. Click on the new icon.

    A selection form opens, listing spring sizes that are available for this specific spring type (see the Spring Sizes selection form below).

    

14. Select the line for spring size 20.

15. Click OK.

    The current spring is replaced with the new spring size. The rod lengths are updated automatically to allow appropriate space for the new spring size.

16. (Optional) Experiment with the other icons available in the hanger form. For instance, try to rotate the spring and notice that the application also rotates the beam-welding lug attached to it and the pin.

Viewing and hiding standard sheets

17. Click on the icon.

    The standard sheets for hangers are displayed.

18. Click on the same icon again.

19. The standard sheets for hangers are hidden.

Viewing and hiding hanger dimensions

20. Click on the icon.

    The hanger dimensions are displayed.

21. Click the same icon again.

    The hanger dimensions are hidden.

ADP Drawlist control

You can modify the ADP Drawlist in the Design module.

The hanger steelwork and all its associated members are added by default. You can add up to ten extra elements to associate additional steelwork that does not belong to the hanger.

Center on hanger

• Click on the icon.

  The graphical view of the support being created or modified is refreshed. The view scale is not modified.

Re-connecting a hanger to a new steelwork beam

• Click on the icon.

  The hanger is connected to a new steelwork beam.

  If necessary, the application moves the hanger to a new position, in order to satisfy the new connection point. The old fitting is deleted and a new fitting is created below the new steelwork section.

  If necessary, and if the hanger contains rods, they are adjusted to maintain the correct hanger height.

  If the new connection is not valid (for instance, the hanger is not vertical because the rods are too long or too short), an error message is displayed and the application restores the original hanger state.

Adding a note

• Click on the icon.

  You can now add a note to be displayed on the hanger drawing.

Quick reference notes about modifying hangers

• For a steelwork section that is parallel to the pipe, use the Distance or Through buttons. This is not considered as a reconnection action since the fitting only moves to the new position. It is not replaced with a new fitting.

• For double-hangers, there is one connection for each hanger. The application prompts twice for the two beams. If only one connection needs to be modified, then for the connection that you do not want to modify, identify the first beam again. The hanger is re-connected to the same beam.

• For hangers that are connected to a double-channel beam, the application prompt twice to identify each of the channels. A check is made that the two identified channel sections form a valid double-channel beam (that is: the same top level, facing each other back to back).