Modify Penetration

The options available from the Modify menu allow you to modifying penetration holes and items in the following ways:

Name

Selecting this option displays the Name form for the currently selected type of penetration item.

Either set the option to Name and enter the required name into the text box, or set the option to Autoname to derive the name automatically from the element’s position in the database hierarchy.

Clicking Attribute displays a listing of all current attribute settings for the element.

Penetration Hole

When this option is selected, the resulting Modify Penetration Hole form has the same functionality as the Create Penetration Hole form. (For further details of the functionality see Create Penetration).

Penetrations

When this option is selected, the Penetration List form is displayed.

The functionality of the Penetration Item List form has been covered previously (see ). The Penetration List form is very similar in appearance and functionality except that the lists are now based on the CMPF and SBFI data rather than the FITT data.

The middle list shows Hole Information ready for modification, while the lower list shows, Penetrating Item data for the referenced FITT.

To change any of the settings in the middle list, click on the corresponding line prefixed by the > character to display an appropriate form.

Merge Penetrations

Penetration holes created by the Pipework or Beams & Columns applications are each represented by a CMPF or CMFI which owns a single SBFI. If you have several of these close together, you may want to combine them so that all of the penetrating items pass though a common hole, represented by a single CMPF/CMFI which owns several SBFIs. To do so, select the CMPF/CMFI which is to represent the multiple penetration and then select Modify > Merge Penetrations on the Penetration subapplication menu.

You will be prompted to identify the penetrations to be merged. Pick them using the cursor in the 3D View and click Cancel on the Status form when you have finished. The Merge Penetrations form displays listing details of the picked penetrations.

To add other penetrations to the list, click Add and pick as required. To remove penetrations from the list, select them in the list and click Remove. When the list contains all penetrations required for the merge, click Merge.

The geometry of the hole through which the multiple penetrations pass is determined by the specification of the owning CMPF/CMFI; modify its specification reference if necessary, or use the Penetration Shape facility to configure the hole to suit the design data for the penetrating items.

Note:
Merging penetrations may leave some CMPF/CMFIs with no components. To delete these, use the Delete > Tidy Multi Penetrations option.

Undo Merge

Selecting this option cancels the effect of a proceeding Merge Penetrations operation.

Penetration Shape

For a multiple penetration involving pipes (but not structural sections), you can shape the hole to suit the diameters of the penetrating pipes rather than by referencing a catalogue specification to define the geometry of the CMPF/CMFI. (This requires that each pipe's ATTA geometry has a dataset defining its required clearance diameter and that each referenced SBFI is owned by the same CMPF/CMFI).

To use this facility, select the CMPF/CMFI which represents the penetration hole and then select Modify > Penetration Shape on the Penetration subapplication menu. The Select Items for Hole Geometry form displays and you will be put automatically into event-driven graphics mode.

Move the cursor into the 3D View and follow the status line prompts there to pick all of the pipes whose diameters are to be used to calculate the penetration hole shape. Each valid ATTA picked will have its referenced SBFI added to the Items to Link list.

To increase the calculated dimensions of the hole to achieve additional clearance around the pipes, enter the required distance in the Clearance text-box.

To add a kicker plate around the calculated hole shape, set the Add Kicker plate option to On. The Kicker Plate Details form displays:

The form allows you to set the design parameters which specify the detailed geometry of the kicker plate. The diagram on the form shows what each parameter represents; enter the required dimensions and click Apply.

Note:
The Kicker Plate Clearance dimension on this form is set to be the same as the Clearance dimension on the Select Items for Hole Geometry form. If you change the setting on either form, the other is changed automatically. When you add a kicker plate, this clearance is interpreted as the clearance between the outside face of the kicker plate and the edge of the hole. The clearance between the inner face of the kicker plate and each pipe is determined by the ATTA dataset for that pipe.

Back in the Select Items for Hole Geometry form, click Preview1 to see an outline view of the overall hole shape calculated from your current selection. If you picked the pipes in the wrong order (for example, anticlockwise instead of clockwise), the shape will not be as you intended; in this case click Preview2. If you have added a pipe to the list which is causing the wrong geometry, select its entry in the list and click Remove. To clear the list and start again, click Re-Pick and pick the pipes more carefully. When the representation shows the correct version, click Apply to create the hole.

Copy like ref.

To update the geometry of a penetrating item to match that of the corresponding penetration hole (or vice versa, depending on which application you are using), navigate to the required reference item and select Modify > Copy like ref. on the Penetration subapplication menu.

The relevant data will be derived from the reference item's specification. For example, assuming that the catalogue data has been set up correctly, the design parameters for a penetration hole (SBFI) can be derived from the corresponding data for the penetrating item (ATTA or FITT) which is referenced by that hole.