The commands in the straking seams category provide the method to place one or more straking seams in the model. By using straking seams, you can split detailed plate parts into sizes that can be manufactured, as determined by what can be purchased from a mill and what can be built in a work center. Creating a straking seam immediately splits the part and creates the associated assembly and physical connections. Plate parts split by straking seams have the original part of their parent.
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Straking seams can only be placed on detailed parts. Therefore, you must run Execute Detailing Command before you can place straking seams.
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When an object is split, or a split is deleted, the software places the resulting parts in the same permission group as the original parts. In ambiguous cases where you do not have permission to update parts or connections, the software places the original parts on the To Do List in a To Be Deleted state and assigns the new parts to the active permission group. A user with write access to the permission group assigned to the original parts must update the To Do List to delete the original parts. See Splitting Objects and Permission Groups.
Straking Seam by Intersection Command
Creates a straking seam and splits the selected detailed plate part by defining the landing curve as the intersection of the selected plate part and a grid plane.
Straking Seam by Offset Command
Creates a straking seam and splits the selected plate part by defining the landing curve as being offset from an existing curve (such as another seam, plate boundary, or reference plane).
Straking Seam by Projection Command
Creates a straking seam and splits the selected detailed plate part by projecting a 2D landing curve that you have sketched onto the plate part.
Straking Seam by Table Command
Creates a straking seam and splits the selected detailed plate part by defining the landing curve as coordinates in a table.
Identifying Seams in Workspace Explorer
You can identify the type of seam in the Workspace Explorer by the icon.
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Design seams
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Planning seams
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Straking seams
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Intersection seams
Intended Use of Seams
Intersection Seams
Created in the Molded Forms task at the intersection of two parts, such as where a deck and a bulkhead intersect. Intersection seams are automatically created by the Execute Split command in Molded Forms.
Design Seams
Created in the Molded Forms task using a seam command. A design seam is used where a design property of a system is changing, such as where the thickness of a plate changes. Leaf systems under a single parent system are created.
Planning Seams
Create in the Planning task using Manage Block Intersections or in the Molded Forms task using a seam command. A planning seam designates the limits of blocks (large segments of a ship assembled in a single location) or smaller assemblies when the limits do not coincide with design seams.
Straking Seams
Created in the Structural Detailing task to designate separate physical plates, usually due to restrictions in plate sizes that can be ordered from the mill. Plate parts under a single leaf system are created.