The engineering constraints that has to be taken care of while splitting the parts are specified as the Joint Rules. There are some rules/ norms that each part has to satisfy to be able to be considered for splitting. Also you can split one large part once. For Flange and Web some different rules are applied, These are as follows:
Joints Rule/ Splicing Norms for flange abd web
| Sr. No. | Rules | Purpose | Default values |
| 1 | Minimum part length consider for splitting | It specifies the smallest part that can be considered for splitting. | 2.5 meters (2500 mm) |
| 2 | Minimum length of smaller piece of a part on splitting | This rule specifies that the split made should be greater than this length | 0.5 meter (500 mm) |
Joints range for flange
| Sr. No. | Rules | Purpose | Default values |
| 3 | Minimum joint position (Ref pic. below) | It says the minimum split piece should not be less than this length.. | Part Length/5 = 0.2 * Part Length |
| 4 | Maximum joint position | It says that joint is not allowed after this position. | Part Length/3 = 0.3333 * Part Length |
Joint range for web
| Sr. No. | Rules | Purpose |
Default values |
| 1 | Joint distance | It says web can split at this position. | Part Length/2 = 0.5 * Part Length |
| 2 | Tolerance for Web joint | It gives the range in which the a web part can be split. |
+/- 500mm |
The rules can be viewed and modified as per your preferences from the Tools->Joint Rules... menu. On clicking this menu item the following Joint Rules... dialog will appear.
Note: The rules need not be set with each and every job. They should be set only once as far as possible.