Specification of deadweight of pipeline along pipeline axis (Input Table)
Through the input data table DEADW the deadweight of the pipeline together with its content along the pipeline axis is provided to the loading model.
The deadweight is provided as a polygon data line attached to the pipeline axis by means of data reference points. The value of the deadweight parameter is calculated at each pipeline node by relating the location of the node to the developed length of the pipeline axis and interpolating the parameter value between parameter values at adjacent data reference points.
Deadweight is interpreted as gravity forces acting in the negative Z-direction. In case the pipeline is submerged the buoyant forces may be taken into account as gravity forces acting in the positive Z-direction and shall be subtracted from the air weight possibly resulting in negative deadweight.
If table W-LEVEL exists and column WLEVEL is set to YES, the program determines which part(s) of the pipeline is (are) under water and assigns the first deadweight value to the submerged part(s) and the second to the other parts.
Deadweight at a specified half infinite long pipeline end condition is interpreted in such a way, that such end points are loaded by a load system causing a displacement at the end node equal to the case in which no pipeline was connected. This displacement does not cause stressing of the connected pipeline.
H310162, last changed: 2009-07-16