AVEVA E3D 2.1 Volume Modelling -Chapter 8

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8

8

Volume Modelling

Volume Modelling

Volume Models are similar to EQUI elements. They may be used for modelling any item in AVEVA E3D that Volume Models are similar to EQUI elements. They may be used for modelling any item in AVEVA E3D that will be constructed from primitives but is not required to be displayed in the Model Explorer as an EQUI will be constructed from primitives but is not required to be displayed in the Model Explorer as an EQUI element.

element.  A

 A typical typical use use of of volume volume models models may may include include plant plant Civils Civils items items (e.g. (e.g. concrete concrete slabs, slabs, concrete concrete plinths, plinths, sitesite roads) or the modelling of escape routes/access obstruction volumes. Volume models can also be used as a roads) or the modelling of escape routes/access obstruction volumes. Volume models can also be used as a method of reserving space within the plant layout for equipment items not yet ready for modelling.

method of reserving space within the plant layout for equipment items not yet ready for modelling.

8.1

8.1

The

The

Volume

Volume

Model

Model

Hierarchy

Hierarchy

Volume Model

Volume Model ( (VOLMVOLM) elements are owned by) elements are owned by ZONEZONEs.s. VOLM

VOLM  elements have some of the attributes of an EQUI and may own primitives  elements have some of the attributes of an EQUI and may own primitives directly, with the exception of Nozzles.

directly, with the exception of Nozzles. VOLM

VOLM  elements may own one or more optional  elements may own one or more optional Sub-Volume ModelSub-Volume Model ((SVOLMSVOLM)) elements which may own any primitive except Nozzles. The SVOLM elements are used elements which may own any primitive except Nozzles. The SVOLM elements are used to break down Volume Models into sub-parts and are similar, and have some of the to break down Volume Models into sub-parts and are similar, and have some of the same attributes, as SUBE elements.

same attributes, as SUBE elements.

8.2

8.2

Creating

Creating

VOLM

VOLM

and

and

SVOLM

SVOLM

Elements

Elements

On the

On the GENERALGENERAL tab, in the tab, in the VolumesVolumes group, clicking the group, clicking the VolumeVolume buttonbutton displays the

displays the Volume ModelVolume Model form. form. The form is similar to the

The form is similar to the Create EquipmentCreate Equipment form described earlier in theform described earlier in the training guide, except that there is no

training guide, except that there is no Attributes…Attributes…  button as VOLM  button as VOLM elements do not have the attributes that are set by this option.

elements do not have the attributes that are set by this option. VOLM

VOLM  elements may be named and positioned, the option lists and  elements may be named and positioned, the option lists and textboxes enable its origin to be set with respect to any element, as for an textboxes enable its origin to be set with respect to any element, as for an EQUI element.

EQUI element.

With a

With a VOLMVOLM as the CE, on the as the CE, on the GENERALGENERAL  tab, in the  tab, in the VolumesVolumes  group,  group, clicking the

clicking the Sub-VolumeSub-Volume button displays the button displays the Sub Volume ModelSub Volume Model form. form. This form is similar to the

This form is similar to the Create Sub-equipmentCreate Sub-equipment form described earlier form described earlier in this training guide.

in this training guide. SVOLM

SVOLM  elements may be named and positioned, the option lists and  elements may be named and positioned, the option lists and textboxes enable its origin to be set with respect to any element, as for a textboxes enable its origin to be set with respect to any element, as for a SUBE element.

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 All primitives, except NOZZ elements may be owned directly by VOLM or by SVOLM elements. Primitives are created and modified using the functions on the EQUIPMENT tab.

8.4

Creating Volume and Sub Volume Models

 –

 A Worked Example

In the Training project all of the civil works and foundations are modelled using Volume Models and are created in suitable Civils SITEs. Only members of the Civils team have access to these SITEs. In order to carry out the worked examples and exercises it is necessary to switch user.

On the TOOLS  tab, in the Training  group, click the Setup  button to display the Training Setup  form. Navigate to the Setup Tools tab and enter the following details for the new user:

Username: A.CIVILMAN Password: A

Click the Switch User  button and close the form.

In this worked example volume models are added to the Civils works to represent reserved walkway areas which in reality have no physical geometry but need to be used during clash checking to ensure appropriate room and access is available for plant personnel and machinery.

8.4.1

Creating the Walkway UDET

Clear the 3D View and add /ZONE-CIVIL-AREA01 to it.

On the TOOLS tab, in the Display group, click the Commands button to display the Command Window. In the Command Window enter NEW :WALKWAY /AREA01-WALKWAYS. This creates a user defined element with the base type VOLM.

User Defined Element Types can only be created using the Command line.

The User Defined Element Type :WALKWAY has been previously defined in the Lexicon module. Query the attributes and note that the ActType is :WALKWAY and the Type is VOLM.

In the Modify group, of the HOME tab, from the Move button option list, click the Position button to display the Explicit Position form. Enter the Explicit Position

West 318000 North 302500 Up 100000.

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8.4.2

Creating the Walkway Primitives

The walkways will be made with a combination of BOX and Extrusion primitives. Extrusions are 2D shapes that are extruded through a distance. An extrusion is made up of three elements:

 EXTR – the extrusion itself. The Position attribute holds the World position of the extrusion origin and

the Height attribute holds the extrusion distance.

 LOOP –  this is the 2D shape that owns a series of vertices, one at each change in direction of the

shape.

 VERT – these are the vertices. Their position is expressed in local co-ordinates, i.e. with respect to the

EXTR origin.

From the EQUPMENT tab, Defaults  group, change the Representation style to Obstruction  and the Obstruction level to Soft

In the Create group, pick Extrusion from the second row of the Primitives gallery.

Enter E 0 N 0 U 0 into the co-ordinates to define the first point at the origin of the WALKWAY.

Using the Contextual Editor , continue creating the remaining vertices using the data from the following table. All vertices are at ground level, i.e. U 0.

Vertex No. East North

2 13000 0

3 13000 -13490

4 11500 -13490

5 11500 -1100

6 0 -1100

 After creating vertex 6, press the Return  key to advance.

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Right click the extrusion in the Model Explorer  and click Rename. Using the rename element form, name the extrusion WW-01_1.

On the VIEW tab, in the Settings group, click the Graphics button to display the Graphics Settings form. On the Representation tab, select 50% from the Obstruction/Visibility Translucency options list and click the Apply button to display the walkway.

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The next step is to add a second walkway. This will be modelled as a box.

Set the Defaults to Obstruction Volume and the Obstruction Level to Soft.

Enter the box creation function from the button in the primitives gallery, then press the down arrow and choose the Explicit option. Choose the origin at these co-ordinates E  -316250mm N  293880mm U 101300mm.

Then define the following dimensions:

Xlength 1500mm

 Ylength 9600mm

Zlength 2600mm

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Exercise 7 Create Stairway Volumes

The Equipment Support structure in  /ZONE-STRUCTURAL-AREA01 requires access stairs which will be added as a separate design process. Using Volume models create a suitable reserved volume for these stairs which can be also used as an access reservation volume once the stairs are modelled.

Two flights of stairs should be modelled as two extrusions. The top flight is 1130mm wide and the bottom 1260mm wide. The positions, wrt World, for the required vertices are shown below.

Ensure that the extrusions are set as Obstruction Volume and Soft.

Both extrusions should sit under a single VOLM named STWAY-001, each extrusion should be named STWAY-001_1 and STWAY-001_2.

Figure

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References

Related subjects : Cable Tray Modelling IN E3D 2.1