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PIAS Manual
2023
Program for the Integral Approach of Shipdesign
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XX, YY and ZZ are the names of the compartments, as defined in module Layout. The definition method has to comply to a number or requirements, which are listed in paragraph Definition of compartments
Void space | Half breadth | Height | Subcompartment |
0.100 | -4.500 | 9.000 | PS part |
0.500 | 4.500 | 9.000 | mid part |
1.000 | - | - | SB part |
The function of this input screen is to define one or more longitudinal girders per subcompartment. Only the girders at the topside of the subcompartment have to be defined. If no girders are present, this is marked by a dash (-).
When defining a longitudinal girder the [Girder] option can be used to toggle the presence of a longitudinal girder.
The tables are calculated at the volume interval defined here.
This option calculates the table of volumes and centres of gravity, without heeling angles (see figure underneath).
If the compartment for the grain calculation has been defined including a curved sounding pipe (see Layout), then the output table will also contain a column with the ullage. The ullage is calculated from the top of the defined curved sounding pipe. The top of the sounding pipe will normally be the top of the coaming in case of a grain compartment.
This option calculates the table of grain heeling moments at the prescribed heeling angle (see figure underneath). There is a special option if the calculations are submitted to the Dutch Shipping Inspectorate.
At the next 2 options a cross-section is drawn on paper. The position of the cross-section to be drawn is defined at this option.
Draws the grain level including void spaces, at zero angle, see the figure below.
Draws the grain level with the heeling angle as prescribed by the regulations, see the example below.
A compartment which is going to be used to compute grain heeling moments will be defined by one or more subcompartments, which have to comply to the following definition requirements: