When there is no deadweight data entered, Ple4Win can calculate the deadweight based on sufficient additional data. The minimum requirements are:

There should be no data in the DEADW table, otherwise this data will be used in the further process.

At least the material weight in table ISTROP (or ANTROP) should be provided.

Warning In case multiple materials are present of which one ore more have no weight assigned, the deadweight will not be calculated and E310/20 will be reported.

Furthermore, there is a COATING table available in which the weight of the medium can be entered, as well as the thicknesses and weights for internal and/or external coatings. There is a maximum of eight coatings per element, otherwise E310/17 will be reported. When table W-LEVEL is present and the weight of water is entered, the buoyancy may be taken into account too.

The cross-section of a pipeline with coatings looks like the picture below:

Coating crosssection

1.The area of the medium is the inner pipe diameter minus (twice) the internal coating thickness(es).

2.The outside diameter of the internal coating is the inner pipe diameter.
The outside diameter of a next internal coating is the inside diameter of the previous internal coating.

3.The outside diameter of the pipeline is defined in table DIAM.
The inside diameter is the outside diameter minus twice the nominal wall thickness from table WALL.

4.The inside diameter of the external coating is the outside diameter of the pipe.
The inside diameter of a next external coating is the outside diameter of the previous external coating.

All coatings are over the entire circumference as is the medium filling the full internal area.

When multiple external or internal coatings are present - which overlap each other - the sequence of input rows in the COATING table is determinative:

Coating sequence

 

Figure 1: the sequence of input rows is irrelevant when coatings do not overlap

Figure 2: the yellow coating is applied first, so the red coating is partially on top of the yellow one.

Figure 3: now the red coating is applied first causing the yellow coating to be on top.
 

For element 22, 23 and 24 in figure 3 above the output table CLAYERS will report the data shown below:

CLAYERS

Mark that for element 23 the external red coating is reported prior to the external yellow coating.

 


H3106 (last modified: June 22, 2021)

 

COATING table

Design function description

Input data table overview

Output data table overview

Design function errors, warnings and messages