Functional Volumes and Planning Breaks

This section discusses creation and modification of functional volumes and planning breaks. Functional volumes divide a design into smaller units, which are more manageable for design and manufacturing purposes, and are necessary for the transition between functional and detailed design. They also allow you to estimate weight, center of gravity and footprint of the design assembly during the functional design phase. Planning breaks are incorporated into functional volumes for engineering purposes, and add offsets to the boundaries of functional volumes.

It is important to integrate shipyard specifications, such as planning restrictions and lifting capabilities, early in the functional design phase.

The following gives the suggested workflow:

• Create a functional volume set.
• Prepare planning breaks.
• Create planning breaks. All the above steps require you to be in the Structure Functional System Design workbench.
• Edit or modify planning breaks using the Structure Functional Object Design workbench.
• Prepare your detailed design using the Structure Detail Design application.

Creating a Functional Volume Set
Creating a Functional Volume
Preparing for Planning Breaks
Editing a Planning Break
Using the Planning Break Manager
Rules for Computation
Estimating Weight and COG