Window and Door Penetrations

The application for Room Design is assumed to be able to modify doors and windows in Room Design elements, but it is not expected to directly modify the hull. To create holes in hull panels requires approval in the hole management system and a penetration will only be made after approval. The shape of wall and hull penetrations is defined by extra primitives identified by their purpose attribute as described below:

For catalogue items, these need to be a SLOOP element belonging to an NSEX element in a negative geometry set. In order to differentiate penetration SLOOPS from conventional hole definitions, SLOOPS used for penetrating walls and other design items are identified by their purpose attribute as follows:

1. Items which penetrate a CTWALL have a purpose of OPGE (Outfitting Penetrating Geometry Element).

2. Items which do not penetrate CTWALLS but do penetrate hull plates or panels have a purpose of HPGE (Hull Penetrating Geometry Element).

This designation allows for differently shaped holes where hull steel cut out may be a different shaped hole to a hole in the wall paneling either side.

Where a penetrating element is the same shape whatever it is penetrating, there still needs to be two penetrating loops with different purposes even though they are identical.