How to join two structures of one typology
From Opera Wiki
File:Struttureunite.png Example of a typology formed by 2 joined structures; you can see the continuous perimeter frames and a single common upright. | File:Strutturedivise.png Example of a typology formed by 2 divided structures; you can see the non-continuous perimeter frames, each structure has its own frame, and there is no common upright between the two. |
In Opera, two structures are said to be united when their fixed frames are continuous, uninterrupted, and use only one upright (or transom) in common; while they are said to be divided when each has its own frame and there is no continuity between the two.
N.B: To access this pane in Opera Job Management: from the typology archive, after selecting a typology press the 
File:Unire1.png Click on the first structure | File:Unire2.png Click on the second structure |
- After creating the two structures in the design sheet, to merge them it will be sufficient to first click on the File:Keyunite.png button, and then sequentially select the two interested structures: Opera will perform a quick check on the perimeter profiles of the two structures, precisely on the connection points, to verify if they have equal code. Based on the result of this check, the program can act in several ways explained below.
| Verification Result | Action | Example |
|---|---|---|
| The profiles are all the same | The program will ask if you want to join the structures. If you answer in the affirmative, the structures are joined on all sides.
If the profile in common does not have Upright/Traverse use, the program will notify the operator and propose the Upright/Traverse selection frame. | File:Strutturaunita2.png I telai fissi delle due strutture sono uniti. |
| The profiles are all different | The structures are left separate. | File:Strutturedivise2.png The fixed frames of the two structures are NOT joined. |
| Only one of the three profiles is the same for the two stuctures | The program will ask if you want to merge the structures; if you answer yes, only the side where the profile is equal is merged. | File:Montantedestro.png In this case only the right pillar was joined. |
| Only the profile in common is the same | The program will ask if you want to merge the structures. If you answer yes, two different actions can occur:
a. if the profile has Upright/Traverse use one of the two is eliminated, only one is left in common between the two and the side profiles remain separate. b. if the profile does not have Upright/Traverse use the program notifies the operator and proposes the Upright/Traverse selection frame while the side profiles will remain separate. | File:Profilocomune.png As can be seen from the figure, the profile in common between the structures was joined |
| Equal only the laterals | The program will ask if you want to merge the structures. If you answer yes, only the sides will be joined. | File:Montantilaterali.png Only the side uprights were joined while the common stringers remained divided. |
As for the example seen above, by joining the two structures the type will become like the one on the side. In order to split the merged structures, it will be sufficient to press the File:Keyjoin.png key again and select the structures to be separated.
N.B: After this operation is completed, it may be necessary to reset the frame cut
