Profile Cutout Standards in AVEVA Marine

In shipbuilding it is most common that the stiffening of the main structural members penetrate the plating of subordinate elements, for example, so that longitudinal frames in the shell or in the decks/bulkheads pass through webs and double floor bottoms. Such penetrations are in AVEVA Marine called cutouts. (Cutouts need often be reinforced by small plate pieces, in AVEVA Marine called clips or collars. The clips are defined in association with the cutouts but they are described in separate documents.)

The cutouts are normally standardized regarding general shape, radii, clearances, and have well defined dependencies on profile types and sizes. Therefore they lend themselves well to be generated by different types of parameterized macros.

The first part of this document describes the three options for generation of cutouts that currently are available in the system. These options are:

1. AVEVA Marine contains a large number of cutouts which have been hard coded into the programs. These cutouts with their design rules are specified in the Hull Standards.

2. The majority of cutouts used by a certain yard are common to all other yards in their general principles. They may vary in details regarding for example, clearances, radii, but the pattern is common. For this category of cutouts, AVEVA Marine has an "External Cutout Definition Facility" which allows a customer easily to set up his own standards.

3. Very special and yard specific cutouts with an arbitrary geometry can be built up in AVEVA Marine geometry macros which allows a customer to develop cutouts with any shape.

These three options are described on an overall level in this specification. Details about them can be found in separate documents.

Independently of the way they have been created all cutout types can be used both in plates and profiles.

Cutouts are in AVEVA Marine normally identified and picked by a number that can be selected quite arbitrarily by the customer when setting up the cutout standard. However, an option to use "named" cutout is described in a separate document Named Cutouts.