Deck 6200 Above Base – 2

Deck 6200 Above Base – Part 2

• Open Drawing
• Turn / Shift Holes
• Create Holes Parallel to Line
• Create Vertical Profiles
• Create Horizontal Profiles
• Create Seams Horizontal
• Create Weld Symbols
• Code Plate

Now you will return to the upper deck "Deck 6200 above base" to add holes, deck beams and seams.

Overview of actions:

1. Open drawing top view "108-6200"
2. Choose Update active block to see the bulkhead "Long. bulkhead 6600"
3. Create holes with diameter 450 mm at 7000 from CL
4. Modify aft most hole by shifting it 50 mm
5. Dimension holes
6. Create two small holes with diameter 50 mm
7. Create holes parallel to hull line with diameter 50 mm
8. Create transverse deck beam at FR28
9. Create two longitudinal deck beams at 1320 off CL
10. Create a series of transverse deck beams from FR23 until FR27
11. Create welded soft seams at 1940, 3910 and 6550 off CL
12. Add weld symbols to the soft seams
13. Code plate "Deck 6200" to check the division of this plate in smaller parts

You will notice that the deck beams at frame 29 and 30 are still missing. You could make these beams with a fixed value here, but it's better to wait a while until you have created the longitudinal bulkhead "Long. bulkhead 3960". Then you can relate the deck beams to this bulkhead.

Additional description of actions:

3. Create holes with diameter 450 mm at 7000 from CL

The creation of these holes is similar to the creation of standard holes 850/450 mm with the following properties:

Name of panel	Option	Value
Create holes	'From frame'	22.5
	'From breadth'	7000
	'To frame'	30.5
	Selected hole type
Hole types	'Diameter'	450

5. Dimension holes

The dimensioning of holes with diameter 450 mm is similar to the dimensioning of standard holes 850/450 mm

6. Create two small holes with diameter 50 mm

The creation of these holes is similar to the creation of standard holes 850/450 mm.

The first hole is positioned just forward of frame 29 and the second hole is just aft of frame 31. Nevertheless these holes can be created in one go with the following properties:

Name of panel	Option	Value
Create holes	'From frame'	29+100
	'From breadth'	6700
	'To frame'	31-100
	'Number of items'	2
	Selected hole type
Hole types	'Diameter'	50

Note: Usually the step size is 1, but between the frame positions "29+100" and "31-100", the actual step size is less than 2. If you enter value "1" for option Step size, the system will modify the value for option To frame from "31-100" into "31+100", which is not what you want.

To force the system to use the given frame positions, you enter a value "2" for option Number of items instead of a value for option Step size. By means of the <TAB> key, you can check later on the value for Step size. The actual value, calculated by the system, is "FR2-200".

10. Create a series of transverse deck beams from FR23 until FR27

Now you will create a series of transverse deck beams from FR23 until FR27 between the longitudinal bulkhead "Long. bulkhead 6600" and the longitudinal girder at 1320 from CL. Because all these deck beams are equal, you can make them in one go. The creation process is similar to the creation of one transverse deck beam at FR28 with the following properties:

Name of panel	Option	Value
Create profile	Selected profile type
	'Body size'	140
	'Thickness'	8
	'From frame'	23
	'To frame'	27
	'Step size'	1 ( this default value can be omitted )
	'Body direction'	Towards Base
	'Thickness direction'	From reversed frame
	'Type of material'	GR-A
	'Molded side placement'	Default
Border value	Limitation	First limitation
		Indicate the longitudinal bulkhead at 6600 from CL
	'Vertical distance'	40
	'1st end shape'
Border value	Limitation	Second limitation
		Indicate the longitudinal deck beam at 1320 from CL
	'Vertical distance'	0
	'2nd end shape'
End type	'Radius'	35

This will result in the generation of five transverse deck beams, positioned at frame 23 until frame 27.

Open Drawing

To open a drawing you have to select the icon Open drawing on the Home tab:

Until now you have selected the next drawing to open from the panel Open drawing. According to the hint Indicate part which has to be visible another possibility to change between drawings is to click on a part in the current drawing. After doing so, the system will open the new drawing of this part.

In this case you will return to the upper deck "Deck 6200 above base". By means of selecting the upper deck, the system will change from side view to top view "108-6200".

Turn / Shift Holes

If you zoom in on the aft most hole, you will see that this hole touches the plate border. Because this situation is not acceptable, you will modify this hole by shifting it 50 mm forward.

Within CADMATIC Hull, every construction item ribbon has both the Insert and the Modify options to modify the earlier created parts.

To shift the aft most hole, select the icon Turn/Shift in the Modify section of the Holes tab:

An alternative method is to click the hole with the right mouse button and selecting Turn/Shift from the popup menu. By means of panel Hole selection menu you select the aft most hole:

On this selection panel, the options above the button Highlight will appear in many selection panels within CADMATIC Hull. Here is a short explanation regarding the options on that part of the panel:

Selection Treatment:	Result:
Select	Item(s) you indicate are selected;
Exclude	Exclude items from the current selection;

Selection Buttons:	Result:
All	Select all items at once;
Reverse	Reverse the current selection;
Highlight	Highlight the current selection;

Selection Methods:	Result:
Crosshair	Only the item (s) you click on is (are) selected;
Clump	Dragging a selection box from left to right, only items that have been boxed entirely are included;
Conflict	Dragging a selection box from right to left, also items that have been only partially boxed are included;

Now select the aft most hole. Enter the value 0+50 for Length which means the hole will be moved over a distance of 50 mm.

Note: If the value 50 is entered instead of 0+50, it would be interpreted as if you would actually be moving the hole over 50 frames!

Click the OK button to shift the hole to the new position.

Create Holes Parallel to Line

Now you will create eighteen holes parallel to the hull line with diameter 50 mm.

To create these holes parallel to the hull line, select the Holes tab again:

Select on the Holes tab the arrow under icon Parallel to Line in the Insert section and choose Hole Parallel to Line Related:

According to the hint Indicate line at side where to position the hole, you do this by clicking a few millimeters above the hull line. Afterwards you enter the position of the holes along the hull line by means of panel Create holes:

Within this panel the value for Parallel distance stands for the distance between the center of the holes and the hull line. Furthermore, the fields From frame and To frame are used to determine the position of the aft most hole and the last hole to be created towards fore ship.

A difficulty for determining the values in question, is the irregularity in frame distance at frame 28 changing from 650 mm into 700 mm. Therefore you will not enter values like 22+325, but you will use decimal values instead. The aft most hole is located at a quarter of the frame distance between frame 22 and frame 23: the value for option From frame is 22.25. The last hole is located at three-quarters of the frame distance between frame 30 and frame 31: the value for To frame is 30.75. Finally the distance between the holes is half a frame distance: the value for Horizontal distance is 0.5. The total number of holes will be calculated by the system.

Choose the type of hole:

Enter a value for diameter of these holes by means of panel Hole types:

By clicking the OK button, eighteen holes with diameter 50 mm will be created parallel to the hull line.

Create Vertical Profiles

Now you will start to make your first deck beam. As you have experienced during the creation of plates, you should always try to refer to other construction parts as much as possible. You will do the same for profiles.

If you take a close look at the sheet, you will see the following deck beams:

• Frame 28 – a continuous transverse deck beam HP 200 x 9;
• 1320 from CL – a longitudinal deck beam HP 200 x 9, starting at frame 22 and stopping at frame 28;
• 1320 from CL – longitudinal deck beam HP 200 x 9, starting at frame 28 and stopping at frame 31;
• Frame 23 to 27 – series of transverse deck beams HP 140 x 8 between the longitudinal bulkhead "Long. bulkhead 6600" and the longitudinal deck beam at 1320 from CL.

To get the optimal result in profile relations, the order in which you create the deck beams plays a significant role. You will start creating the transverse deck beam at frame 28, then you will create the two longitudinal deck beams at 1320 from CL and finally you will create the remaining smaller transverse deck beams from frame 23 to frame 27.

Generally, all deck beams will be created using the available functions for profiles. These functions are accessible by means of the Profiles icon on the Construction tab:

After selecting this icon, the ribbon tab Profiles is opened:

This ribbon contains four different options for creating topological profiles:

Topological profiles are profiles which are defined by the position of other construction parts and/or the hull. This means that any changes in the position of the other construction parts has influence on the concerning profile:

• in View
• Horizontal
• Vertical
• Arbitrary

The Profiles ribbon tab will remain open for the duration of your session, which means until CADMATIC Hull is closed.

Within this training step you will only create vertical and horizontal profiles. The terms Horizontal and Vertical have nothing to do with the actual position of the profile itself, but with the position as it is presented in the drawing! During this tutorial, you will also create profiles in view and arbitrary profiles.

Let's create the transverse deck beam at frame 28. Due to the vertical position of this beam in the drawing, you have to select the icon Vertical Profiles:

You specify the type of profile and its position by means of panel Create Vertical Profile:

Here is a short explanation of the available options within this panel:

• The type of profile is "HP" or "Bulb" and therefore the following option icon is selected:

• To select the size of the profile, you have to select the options Body size and Thickness. Each option generates a list of default values from which you select the appropriate one. In this case you select the values 200 and 9 respectively;
• To determine the position of one profile or a series of profiles, you have to enter a value for From reversed frame and may enter values for To frame, Step size and Number of items. In this case you will create only one profile at frame 28, so you only have to enter value 28 for From frame;
• To determine how one profile or a series of profiles is created, you have to select one of the presented options for Body direction and Thickness direction;
• If the profile should be created below the plate, you accept the default value Towards Base for Body direction, but if the profile should be created on top of the plate, you select From Base;
• The thickness direction of the profile depends on the actual position of the profile with respect to the reversed frame and the chosen value for Thickness direction. For instance, when the profile is located aft from the reversed frame and the thickness direction is From reversed frame, the profile will be created with its thickness direction pointing to the aft of the ship.
• The type of material of the profile will be the presented standard material GR-A.
• The molded side placement will be set as Default.
• Normally the profile will automatically be attached to the right plate. Only in exceptional cases you select the plate to which the profile should be attached. So the Choose plate button is hardly used.

After clicking the OK button, you have to specify the length of the profile by defining its first and second relations. Whenever possible, you should define the first and second relations by referring to other construction parts. Using the reference method results in a so-called topological profile. It's preferable to work from lower end to upper end.

Now you determine the lower end of the profile by means of panel Border value:

The lower end of the deck beam is limited by the longitudinal bulkhead "Long. bulkhead 6600". Instead of entering a value for Breadth value, you will refer to the longitudinal bulkhead by clicking just above this bulkhead. The option Vertical distance stands for the distance between the beam and the longitudinal bulkhead. This distance is 40 mm. You also have to define the concerning end shape of the deck beam for this position.

Generally speaking a profile can be given four end shapes:

• The first and second end shapes are used for the body of the profile;
• The third and fourth end shapes are meant for the flange of the profile;

Looking at the limitations of the profile, the end shape at the first limitation is specified by the first and third end shapes and so the end cut at the second limitation is defined by the second and fourth end shapes.

Note: In this case you will not select the third and fourth end shape, because defining the end shape for the flange of a bulb is not very useful.

Now you specify the end cut of the deck beam by selecting type 'A' as the first end shape:

After specifying the first limitation (lower end) of the profile, you proceed to determine second limitation (the upper end) of the profile as well. The option automatically changes from First limitation to Second limitation:

The upper end of the deck beam is limited by the upper boundary of plate "Deck 6200" which is at a distance of 100 mm from the centerline. Refer to this upper boundary by clicking just below it. The vertical distance between the profile and the plate boundary should be 0 mm. Finally you have to define the end shape of the deck beam again by selecting type 'C' for the second end shape:

This end shape contains a small welding hole in the corner. You can enter the appropriate radius of this welding hole within panel End type:

By clicking the OK button, the transverse deck beam at frame 28 will be created.

Create Horizontal Profiles

After creating the transverse deck beam at frame 28, you will create two longitudinal deck beams at 1320 from CL:

• A longitudinal deck beam HP 200 x 9, starting at frame 22 and stopping at frame 28;
• A longitudinal deck beam HP 200 x 9, starting at frame 28 and stopping at frame 31.

Let's first create the aft most longitudinal deck beam, starting at frame 22 and stopping at frame 28.

Select the Profiles tab:

Select in the 'Insert' section the icon Horizontal Profiles:

Also for this horizontal profile you specify the type of profile and its position by means of panel Create Horizontal Profile. Generally speaking the last used type of profile is used as the default for the new one. In this situation the default type of profile HP 200 x 9 is the right one.

Within this panel the available options are quite similar to the presented options within panel Create Vertical Profile. The differences are listed below:

• To determine the position of one profile or a series of profiles, you will now use the fields From breadth and To breadth instead of To frame and From frame;
• The thickness direction of the profile now depends on the actual position of the profile with respect to the centerline.

In this situation you will create only one profile at 1320 mm from centerline. This profile will be located underneath the deck with a thickness direction From CL.

After clicking the OK button, you have to specify the length of the profile by defining its start and end points. We take as start point the aft end of the profile.

Now you determine the aft end of the profile by means of panel Border value:

The aft end of the longitudinal deck beam is limited by the aft boundary of plate "Deck 6200". Refer to this aft boundary by clicking right next to it, on the inside the plate. At the aft end the horizontal distance is 0 mm; enter value 0 for Horizontal distance. Select the first end shape being end shape type 'C':

Next, enter the radius for the small welding hole in the corner:

By clicking the OK button you have defined the aft relation of the longitudinal deck beam.

Now the forward end of the profile will be defined by means of the same panel:

The forward end of the longitudinal deck beam is limited by frame 28. Instead of entering value 28-9 for frame numbers, you can also click your mouse a few millimeters on the left hand side of the deck beam at frame 28. The value "0" for the Horizontal distance has already been inserted as default. Select the second end shape being end shape type 'N'. This special type is chosen because it contains, besides the welding hole, an additional hole to create room for the bulb of the profile on frame 28:

Finally enter the radius of the upper corner:

By clicking the OK button, the aft most longitudinal deck beam will be created.

Now you will create the forward longitudinal deck beam, starting at frame 28 and stopping at frame 31, in a similar way.

The properties of this second beam are listed in the following table:

Name of panel	Option	Value
Create profile	Selected profile type
	'Body size'	200
	'Thickness'	9
	'From breadth'	1320
	'Body direction'	Towards Base
	'Thickness direction'	From CL
	'Type of material'	GR-A
	'Molded side placement'	Default
Border value	Limitation	First limitation
		Indicate frame 28
	'Horizontal distance'	0
	'1st end shape'
End type	'Radius'	35
Border value	Limitation	Second limitation
		Indicate frame 31
	'Horizontal distance'	40
	'2nd end shape'

Create Seams Horizontal

Now you will create three welding seams in plate "Deck 6200".

The deck plate you have created until now is too big for the cutting machine. It needs to be divided in smaller parts by creating seams in the plate.

Within CADMATIC Hull there are two ways for dividing plates:

• Splitting plates;
• Creating seams.

By splitting a plate, you literally cut the plate into smaller (more) plates. By creating seams on a plate you do not divide the plate into smaller parts itself, until you begin to code this plate. The advantage of using seams during the engineering process is the fact that you are able to change the position of the seams on the plate easily, since the plate in actuality is not split into two or more. Therefore our recommendation is to use seams to take care of the following prerequisite: the plate must have an equal thickness!

Sometimes it is required to make a part of the existing plate thicker or thinner. In such cases you have to split the plate first and then change the thickness of the concerning part.

In this case the upper deck "Deck 6200" contains three seams:

• A horizontal seam at 1940 from CL;
• A horizontal seam at 3910 from CL;
• A horizontal seam at 6550 from CL;

First you will make the two seams at 1940 and 3910 from CL, and then you will make the remaining one at 6550 from CL. These seams can't be made in one step, due to a difference in intermediate distance between them.

Now we are going to create the first two horizontal seams in plate "Deck 6200", which has an equal thickness of 8 mm.

Select the Welds icon on the Construction ribbon tab:

After selecting this icon, the tab Welds/Beveling is opened:

This ribbon contains two options for seams:

• Horizontal

• Vertical

Select the icon Horizontal Seam:

According to the hint Select part in which a welding seam has to be placed you select plate "Deck 6200". Enter the location of the first two welds to be created by means of panel Create Horizontal Seam:

By clicking the OK button, two soft seams are created at 1940 and 3910 from CL.

Now let's create the third horizontal weld in plate "Deck 6200". This weld, positioned at 6550 from CL, is created in a similar way as the previous ones.

Create Weld Symbols

Now you will add weld symbols to the created seams.

Select the Welds/Beveling tab again, or reopen it by clicking the Welds icon on the Construction tab:

Select in the Symbols/Dimensions section the first icon Weld Symbols, followed by the icon Weld Symbol (ncgweld1) on the Insert Weld Symbols toolbar:

The system will display an additional panel Weld symbols, in which you can select a welding code:

This welding code is not used by everyone. If you don't wish to place a welding code, you complete the process clicking the little cross in the upper right corner after you have indicated the positions where the weld symbols should be placed. If you do wish to place a welding code, you complete the process by clicking the OK button on the panel.

Here you will only add weld symbols to the seams without additional welding codes. Please indicate the desired positions of the weld symbol for all three seams and complete the process by closing the window so that no welding codes are placed.

Code Plate

As explained before, a plate containing seams will not be divided into smaller parts, unless you code this plate. You will check the division of plate "Deck 6200" in four individual parts by coding it.

Coding a plate means creating one or more DXF output files for Computer Aided Manufacturing. These output files contain both geometric and production information of the part and will be imported in a nesting program.

Generally speaking the Code plate option is only used for individual geometrically complex plates to verify if the generated production output is correct. In real life the entire block will be coded after the block has been completed.

Select the Code One Part icon on the Production tab:

The system will display panel Code One Part:

Please follow the instruction given by hint Select the part to be coded and select plate "Deck 6200". The graphical screen will be split up in two parts: one part contains the original drawing and the other part contains the coded part. With the Switch windows button from panel Coded part you are able to switch between these windows.

In this situation the first coded part in DXF-format 6116108-1-1.dxf will be displayed within window Coded part. By using the Next button you are able to display and add to this window all the coded parts belonging to this plate one by one as it is illustrated in the figure below displaying the files 6116108-1-1.dxf, 6116108-1-2.dxf, 6116108-1-3.dxf and 6116108-1-4.dxf:

Within window Coded part you see that every plate has its own orientation symbol. The cutting lines are displayed in green and the marking lines are displayed in white. The white marking lines also contain one or more triangles. These triangles indicate the thickness direction of the connected deck beams.

The plate is shown upside down. As part of the coding process the plate is automatically turned upside down because of the marking lines, which must be marked from above on the cutting machine.

Now return to the original plate in 3D-Contek by closing the window or use the hot key <Esc>.

You will see that plate "Deck 6200" is still one plate with the seams: the coding process does not modify the original part but generates an extract from it.