Excess and Compensation

AVEVA Marine supports two main types of explicitly added compensation for bad fitting, excess and compensation.

Excess means the addition of a strip of constant width along edges of panels and plates.

Compensation means addition in a triangular shape along boundaries of panels, either in the shape of a symmetric "roof" along a complete boundary or as a wedge, starting at a corner of a panel.

The added excess material may be removed for fitting in different steps of assembly, for example, either in part fabrication, in putting together parts and/or assemblies up to main section mounting.

Accordingly, Hull allows the user to specify the excess and its type/level in the modelling process (see Hull Planar Modelling, Default File and Design Language, Excess Statement).

The levels of excess may be illustrated in drawing by individual symbols, contained in a special symbol font.

Moreover, the excess type will be stored also in the plate parts so that appropriate actions can be taken in later assembly stages.

A special symbol font should exist containing the symbols to be used for indication of the excess types. Its number is 92.

It is the customer's responsibility to see to it that this font exists (if the Hull Modelling default parameter DRAW_EXCESS>=2) and that it contains the symbols corresponding to the symbol numbers referred to in the default file of Hull Modelling.

A customer may add new symbols to this font with arbitrary numbers, but these numbers should be given in the default file of Hull Modelling.

Normally, each symbol should have one connection point which will "snap" to the closest indicated contour.

If DRAW_EXCESS=3 then the symbol should have a text point as well. Its position is outside the tail of the symbol.

If no text point has been defined, the text will be located to the right of the actual symbol.