Function errors/warnings/messages
Contents
Compose wave/current loading
Function ready condition: Input data tables ENVLOAD and C-DML tested, moreover either table WAVE or table CURRENT tested. All other input data tables are optional.
Function error condition: 19 error conditions, 4 severe warning conditions, 11 warning conditions, no informational messages, no messages.
Wave load reference "WaveRef" not found in table 'WAVE'.
The wave load reference name "WaveRef" provided in input table ENVLOAD, column WAVEREF has not been specified in input table WAVE.
•no output data tables have been produced
Wave load reference found without table 'WAVE'.
In input table ENVLOAD a WAVEREF has been provided and input table WAVE does not exist.
•no output data tables have been produced
Current load reference found without table 'CURRENT'.
In input table ENVLOAD a CURRENT has been provided and input table CURRENT does not exist.
•if waves have been specified, output data table WAPROF has been produced
Profile not found in table 'CURPROF'.
In input table CURRENT a current profile referring to table CURPROF has been specified and the corresponding column in input table CURPROF is undefined.
•if waves have been specified, output data table WAPROF has been produced
If the CURRENT value in table ENVLOAD is Yes and the ORDER value in the CURRENT table is above 6, this error is also reported because there is just room for 6 profiles
Profile reference found without table 'CURPROF'.
In input table CURRENT a current profile referring to table CURPROF has been specified and input table CURPROF does not exist.
•if waves have been specified, output data table WAPROF has been produced
Ground level above water level everywhere, or pipe is buried everywhere.
For each element one of the relations hold: W-LEVEL ≤ G-LEVEL or Z-AXIS ≤ G-LEVEL, or if the average water level does not exceed the average ground level.
•no output data tables have been produced
(No parts of the pipeline are considered to be in open water though some may be above the local ground level but below the average one.)
Unable to calculate wave length according to Stokes 5-wave theory.
For shallow water and intermediate depth the wave-height/sea-depth ratio is too large (but less than 0.78) in case of Stokes 5 waves.
•no output data tables have been produced
(In this case no solution is found for the equations describing the Stokes 5 wave theory. Apply another wave theory.)
Extreme wave-height/sea-depth ratio.
For shallow water and intermediate depth the wave-height/sea-depth ratio exceeds 0.78.
•no output data tables have been produced
(The breaking wave limit has been exceeded and the available wave theories are not suitable to describe the situation.)
Extreme wave steepness.
The wave-height/wave-length ratio exceeds 1/7.
•no output data tables have been produced
(The breaking wave limit has been exceeded. the wave is too high.)
Extreme diameter/wave-length ratio.
The diameter/wave-length ratio exceeds 0.1.
•output data table WAPROF has been produced
(In this case the calculation method is not appropriate anymore because the influence of refraction and diffraction cannot be neglected.)
Distance to disturbing member too small.
The distance from an element (axis) perpendicular to a disturbing member (axis) is smaller than the sum of element radius and member radius.
•output data table WAPROF has been produced
(The element diameter from table COATING is taken, if applicable, else the structural diameter from table PIPEDIM.)
Current profile not starting at (average) water level.
The Z-value in the first row of table CURPROF is not equal to the (average) W-LEVEL.
•if waves have been specified, output data table WAPROF has been produced
(See description table CURPROF.)
Infinite amplification factor.
The wave frequency is equal to the natural frequency of a pipe span and no damping has been specified.
•output data tables WAPROF and VELACC have been produced.
Deadweight of submerged pipeline or weight of pipe in air is not defined.
Input table DYNAMPL exists, but column DEADW in output table PIPEDIM contains no data..
•output data tables WAPROF and VELACC have been produced.
(For calculation of dynamic effects the deadweight is needed.)
No ground and/or water level defined.
Either input data table G-LEVEL or W-LEVEL or both do not exist.
•no output data tables have been produced
(Both G-LEVEL and W-LEVEL are needed in order to define the (average) water level and the (average) sea bed level.)
No elements in water.
The centre of each element lies above the (average) water level or, if not, to each element an ultimate top soil reaction (RVT) has been assigned.
•if waves have been specified, output data table WAPROF has been produced
'C-DML' toggled to X-P not possible.
The coordinates of input table C-DML are toggled to X-P.
•if waves have been specified, output data table WAPROF has been produced
(Use of X-P is not allowed due to possible overlap of data.)
Coinciding disturbing members.
A member falls (approximately) within the circumference of another member.
•if waves have been specified, output data table WAPROF has been produced
(Coinciding disturbing members are not allowed.)
Element 'number' is "title".
In the WAFOR table, hydrodynamic forces have been defined for the indicated element. However, this element is either WEAK or a JOINT.
Data from table OUTDIAM is no longer used.
Input table OUTDIAM is no longer used.
•all applicable output data tables have been produced.
(All external (weight) coatings and possible marine growth should be defined in input table COATING)
Or
Data from table AIRWGHT is no longer used.
Input table AIRWGHT is no longer used.
•all applicable output data tables have been produced.
(The weight of the pipeline in air is calculated in design function 3.1)
Gravity not between 9.3 and 10.3 m/s2
In input table PROPENV a unrealistic value has been specified for the acceleration of gravity.
•all applicable output data tables have been produced
Wave profile is probably irregular.
For shallow water and intermediate depth the wave-height/sea-depth ratio is relatively large and Stokes 5 theory has been applied.
•all applicable output data tables have been produced
(Although a solution has been found for the equations describing the Stokes 5 wave theory, the wave profile may contain bumps or even be triple-crested. You should check this by observing the graph of the wave profile in table WAPROF. The resulting velocities and accelerations may be less accurate or wrong.)
No hydrodyn. coef for el. 'el1' to 'el2'
Zero value hydrodynamic coefficients have been defined for submerged pipeline elements. This will result in zero valued hydrodynamic forces for the given elements. This is likely to be wrong.
With at least one element the ground level is above the water level.
For one or more but not all elements holds: W-LEVEL ≤ G-LEVEL.
•all applicable output data tables have been produced
(This can be a normal situation, but also an input error.)
Irregular still water surface
The difference between W-LEVEL for an element in open water and the average W-LEVEL exceeds 20 % of the calculated average water depth.
•all applicable output data tables have been produced
(Only elements in open water are considered for the calculation of both the average water and ground level. The average water depth is the difference between the average water and the average ground level. The values of these levels are reported in table VELACC.)
Defunct.
Irregular ground surface
The difference between G-LEVEL for an element in open water and the average G-LEVEL exceeds 20 % of the calculated average water depth.
•all applicable output data tables have been produced
(Only elements in open water are considered for the calculation of both the average water and ground level. The average water depth is the difference between the average water and the average ground level. The values of these levels are reported in table VELACC.)
Current profile not ending at ground level
The Z-value in the last row of table CURPROF does not equal the (average) G-LEVEL.
•all applicable output data tables have been produced
(If the last Z-value is above G-LEVEL, the current is kept constant from last Z-value to G-LEVEL, if below G-LEVEL the Z-value at G-Level is determined by linear interpolation.)
No wave data, no dynamic effects calculated.
No wave reference has been specified in table ENVLOAD, but table DYNAMPL exists.
•all applicable output data tables have been produced except table AMPLFAC
(Dynamic amplification is caused by the wave frequency.)
Dynamic amplification. factor < 1, changed to 1
The dynamic amplification factor for a free span is less than 1.
•all applicable output data tables have been produced
(This may occur if the wave frequency is greater than the natural frequency of the pipe span.)
Soil defined at element(s) above ground level and below water level.
For one or more elements above ground and below water level soil properties have been specified in Design Function 3.2.
•all applicable output data tables have been produced
(The elements in question have not been added to the list of elements for which wave/current forces are calculated.)
Element(s) in water below mean ground level
There are elements in water but below the calculated mean G-LEVEL.
•all applicable output data tables have been produced
(For the calculation of wave/current forces these pipe elements are considered to be at mean G-LEVEL.)
Hydrodynamic amplification factors for span between nodes 'num' - 'num' are not calculated because the actual length differs 'value'%.
A span should be more or less straight, i.e. the actual length should not differ more than 10% from the straight length between start and end.
•all applicable output data tables have been produced
(See input table DYNAMPL for conditions to be met.)
Hydrodynamic amplification factors for span between nodes 'num' - 'num' are not calculated because only 'value'% is submerged.
A span should be submerged for over 50%.
•all applicable output data tables have been produced
(See input table DYNAMPL for conditions to be met.)
H4104 (last modified: Feb 26, 2026)
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