Control of GSD:s via a Default File
- Last UpdatedDec 02, 2025
- 7 minute read
The default file is a normal ASCII file, created by any standard editor. The complete file name must be assigned to SBH_GSD to be available to the function. The file shall be built up by keywords (as described below) followed by an equal sign and a value. One keyword shall be written per line and all information after the first blank character is interpreted as a comment.
|
Name |
Default |
Description |
|---|---|---|
|
BKT_MIN1 |
300 |
Bracket arms less or equal to the assigned value will get no GSD's at all. |
|
BKT_MIN2 |
2000 |
Bracket arms less or equal to the assigned value will get only one GSD. The GSD to be marked is the one closest to the origin of the bracket. |
|
CL_NAME |
none |
Name of a curve to be used as centerline when adding CL marking to developed plates. If not wanted, then this keyword should not be given (that means, none). |
|
CORNER_DIST |
50 |
Distance of GSD to corner. |
|
BRA_CORNER_DIST |
50 |
Distance from corner of bracket to GSD. |
|
FLA_CORNER_DIST |
50 |
Distance from corner of flange to GSD. |
|
STI_CORNER_DIST |
50 |
Distance from corner of stiffener to GSD. |
|
BUILT_STI_CORNER_DIST |
50 |
Distance from corner of built profile flange to GSD.The default value for the above four keywords is the value of CORNER_DIST. |
|
EDGE_BLOCK |
none |
Name of a single block for the plates of which reference marks should be added along the edges of developed plates. If not wanted, then this keyword should not be given (that means, none). |
|
EDGE_ON |
NO |
Flag controlling if reference marks should be added along the edges of all developed plates or not. Possible values are YES and NO. |
|
EXCL_CORNER_SHELL |
NO |
GSD:s are normally defined in the corners of all shell plates. The definition of these GSD:s can be excluded by setting this parameter to YES. |
|
EXCL_PLANAR_BSEAM |
NO |
GSD:s are normally defined in the corners of planar plates along all boundary seams, unless it is a free side without a bevel definition. The definition of these GSD:s can be excluded by setting this parameter to YES. |
|
EXCL_PLANAR_ISEAM |
NO |
GSD:s are normally defined in the corners of planar plates along all internal seams. The definition of these GSD:s can be excluded by setting this parameter to YES. |
|
GAP |
0 |
Distance between the GSD reference point and the plate edge, see the figure below. |
Figure 2:14. The effect of GAP
|
GSD_AT_FREE |
NO |
GSD:s at free edges on plate are by default not displayed. This can be changed by setting this keyword to YES (see figure above). |
|
GSD_AT_T |
NO |
GSD:s at T-junctions at plate edges are by default not displayed. This can be changed by setting this keyword to YES (see figure above). |
|
FLA_A |
500 |
Flange marking. Length of marking line defining the moulded line of the attached web panel. |
|
FLA_B |
20 |
Flange marking. Length of the marking line defining the material direction of the attached web panel. |
|
FLA_LIM |
1000 |
This limit defines the maximum length of a flange for which only one marking will be necessary. |
|
FLA_SHAPE |
HOOK |
Controls if a flange should be marked as a hook (HOOK) or if the panel thickness should be indicated with two parallel lines (TRUE), or marked with a combination of a hook and a thickness marking (HOOK_THICKNESS). |
|
BUILT_FLA_SHAPE |
THICKNESS |
Controls if the flange of a built profile should be marked with two parallel lines indicating the thickness of the web (THICKNESS) or marked with a hook (HOOK) or marked with a combination of a hook and a thickness marking (HOOK_THICKNESS). |
|
INTERVAL |
1000 |
Interval length between GSD:s for manual insertion along panel boundaries. |
|
MARK_BKT_PROF |
YES |
Parameter controlling if profiles on brackets shall be marked with GSD:s |
|
MARK_BRA_TRACE |
YES |
Parameter controlling GSD:s along bracket traces. YES will cause the GSD:s along bracket traces always to be marked. NO will remove all GSD:s for bracket traces. YES_NOALIGN will mark GSD:s along bracket traces except if the bracket trace in line with (and connected) to a stiffener trace. See the figure below. |
|
MARK_FLA |
YES |
The parameter controls the generation of GSD.s for flanges. Both the face plates of built profiles as well as panel face plates are considered. |
Figure 2:15. The effect of MARK_BRA_TRACE
|
MARK_WHEN_NOTCH |
NO |
Allows the user to decide what to do in cases when a corner GSD and a notch coincide. Options are either to skip the GSD (NO) or to draw the GSD above the notch (YES). See the figure below. |
Figure 2:16. The effect of MARK_WHEN_NOTCH
|
MAX_DIST |
2000 |
Maximum distance between internal GSD:s along a marking trace. |
|
NOMARK_BKT |
none |
The designation of a bracket that should not generate any GSD:s. The keyword can be repeated any number of times. |
|
NOMARK_BKT_ANGLE |
-1.0 |
If the angle between the arms A and B of a bracket is close to the assigned value (+-0.5 degrees), then no GSD marking should be set. |
|
NOMARK_CON |
none |
Connection code of stiffener that should not generate a GSD in the corresponding end of the stiffener. This keyword can be repeated any number of times. |
|
NOMARK_PL_ANGLE |
-1.0 |
If the angle BETWEEN TWO SEAMS IN A PLANAR PLATE CORNER is close to the assigned value (+-0.5 degrees), then no GSD marking should be set. |
|
NOMARK_PR |
0.0 |
If the marking trace of a stiffener is shorter or equal to the parameter value, then no GSD marking should be set. |
|
PERCENT_MTRL |
0 |
Percent of size of the GSD that the GSD shall be moved in the direction of the material on marked traces. If for example SHAPE=LINE, SIZE=100 and PERCENT_MTRL=25 then the GSD line will be moved 25 mm from the trace line into the material of the member welded along the trace. Only valid for marking trace. See the figure below |
Figure 2:17. The effect of PERCENT_MTRL
|
PL_LIM |
0.0 |
This parameter affects all plate edges that cause a marking trace. If the length of such an edge is shorter or equal to the given limit value, then only one GSD will be presented (corner GSD and GSD at marked trace). The GSD that is presented is the one in the end closest to BOTTOM, AFT or shell of SB side. This type of reduction cannot be used together with the REDUCE_DIR keywords (see the figure below). |
Figure 2:18. The effect of PL_LIM
|
PL_LIM2 |
0.0 |
This parameter affects all plate edges that cause a marking trace. If the length of such an edge is shorter or equal to the given limit value, then only one GSD will be presented on the marked trace and no corner GSD's at all on the abutting plate. The GSD that is presented is the one in the end closest to BOTTOM, AFT or shell of SB side. This type of reduction cannot be used together with the REDUCE_DIR keywords. |
|
PR_LIM |
0.0 |
This parameter affects all profiles. If the length of a profile trace line is shorter or equal to the given limit value, then only one GSD will be presented on both the plate and along the profile trace. The GSD that is presented is the one in the end closest to BOTTOM, AFT or shell of SB side. This type of reduction cannot be used together with the REDUCE_DIR keywords. |
|
REDUCE_DIR_X |
BOTH |
Keyword allowing a customer to reduce the number of GSD:s at corners and along marking traces for intersecting panels and profiles in all cases where the main direction of the marking trace is in the x direction of the ship. Default value is BOTH (no reduction) and the other two possibilities are AFT and FWD, instructing the program to add GSD:s only at the end of the trace in the specified direction. |
|
REDUCE_DIR_Y |
BOTH |
Keyword allowing a customer to reduce the number of GSD:s at corners and along marking traces for intersecting panels and profiles in all cases where the main direction is in the y direction of the ship. Default value is BOTH (no reduction) and the other two possibilities are PS and SB, instructing the program to add GSD's only at the end of the trace in the specified direction. |
|
REDUCE_DIR_Z |
BOTH |
Keyword allowing a customer to reduce the number of GSD:s at corners and on marking traces for intersecting panels and profiles in all cases where the main direction is in the z direction of the ship. Default value is BOTH (no reduction) and the other two possibilities are BOT and TOP, instructing the program to add GSD:s only at the end of the trace in the specified direction. |
|
SEAM_DIST |
100 |
Distance from GSD to seam/butt along hull curve as a boundary of a plane panel. |
|
SHAPE |
TRIANGLE |
Shape of GSD, possible values are TRIANGLE and LINE. |
|
SIZE |
50 |
Leg length of triangle or length of line. |
|
TRACE_LIM |
3500 |
Maximum length limit for marking trace to be represented by both trace and GSD:s. Valid for ordinary plate parts (see also TRACE_LIM_PLCM below). |
|
TRACE_LIM_PLCM |
3500 |
Length limit for marking trace to be represented by both the trace and GSD's. Valid for assembly parts - Panel Line Control Modules (see also keyword TRACE_LIM above). |
|
USE_WELD_TRACE |
YES |
Allows the user to select if the weld trace or the moulded trace shall be marked and be used in positioning of GSD's. Possible values are YES and NO (see the figure below). |
Figure 2:19. The effect of USE_WELD_TRACE.