TM-1102 AVEVA Plant (12 Series) Cable Tray Modelling Rev 1.0

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AVEVA Plant

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Cable Tray Modelling

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AVEVA Plant (12 Series) Cable Tray Modelling TM-1102

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Revision Log

Date Revision Description of Revision Author Reviewed Approved

05/01/2008 0.1 Issued for Review KM

25/01/2008 0.2 Reviewed KM BG

04/04/2008 1.0 Approved for Training 12.0.0.3 KM BG RP

Updates

All headings containing updated or new material will be highlighted.

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Disclaimer

Information of a technical nature, and particulars of the product and its use, is given by AVEVA Solutions Ltd and its subsidiaries without warranty. AVEVA Solutions Ltd. and its subsidiaries disclaim any and all

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Copyright

Copyright and all other intellectual property rights in this manual and the associated software, and every part of it (including source code, object code, any data contained in it, the manual and any other documentation supplied with it) belongs to AVEVA Solutions Ltd. or its subsidiaries.

All other rights are reserved to AVEVA Solutions Ltd and its subsidiaries. The information contained in this document is commercially sensitive, and shall not be copied, reproduced, stored in a retrieval system, or transmitted without the prior written permission of AVEVA Solutions Limited. Where such permission is granted, it expressly requires that this Disclaimer and Copyright notice is prominently displayed at the beginning of every copy that is made.

The manual and associated documentation may not be adapted, reproduced, or copied in any material or electronic form without the prior written permission of AVEVA Solutions Ltd. The user may also not reverse engineer, decompile, copy or adapt the associated software. Neither the whole nor part of the product described in this publication may be incorporated into any third-party software, product, machine or system without the prior written permission of AVEVA Solutions Limited or save as permitted by law. Any such unauthorised action is strictly prohibited and may give rise to civil liabilities and criminal prosecution.

The AVEVA products described in this guide are to be installed and operated strictly in accordance with the terms and conditions of the respective licence agreements, and in accordance with the relevant User Documentation. Unauthorised or unlicensed use of the product is strictly prohibited.

Printed by AVEVA Solutions on 16 May 2008

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1 Introduction ... 8

1.1 Aim... 8

1.2 Objectives ... 8

1.3 Prerequisites ... 8

1.4 Course Structure... 8

1.5 Using this guide ... 8

2 Cable Tray Design – Basic Concepts ... 10

2.1 Entering a Design Session... 10

2.2 Cable Tray Specifications ... 11

2.3 Setting the Appropriate Specification... 11

2.4 Cable Tray Creation Form ... 12

2.5 Cable Tray Branches ... 12

2.6 Cable Tray Branch Heads and Tails... 13

2.7 Cable Tray Branch Head / Tail Positioned Explicitly... 14

2.8 World Co-ordinates... 15

2.9 Cable Tray Branch Components (Fittings)... 15

2.9.1 Creating Branch Components (Cable Tray Fittings) ... 15

2.9.2 Selecting the Component from the Specification ... 16

2.9.3 Branch Component List Order ... 18

2.9.4 Automatic Positioning and Orientation of New Components ... 18

2.9.5 Positioning and Setting the Orientation of Components ... 18

2.9.6 Arrive and Leave Points ... 19

2.10 Save Work ... 19

2.11 Get Work ... 20

Exercise 1 Create a Cable Tray ... 21

3 Positioning and Connecting Cable Tray Components ... 22

3.1 Connecting the Branch Head or Tail... 22

3.1.1 Connecting to the Head / Tail of another Branch... 23

3.2 Connecting a Component ... 25

3.2.1 Connecting a Component to Previous / to Next ... 26

3.3 Displaying Cable Tray Fill Level ... 27

3.4 Positioning Cable Tray Items... 27

3.5 Positioning Components ... 28 3.5.1 Distance ... 28 3.5.2 Through ... 31 3.5.3 Clearance ... 32 3.5.4 Plane Through... 33 3.5.5 Plane Clearance... 34

Exercise 2 Adding and Positioning Components ... 35

4 Branch Re-routing and Connection References ... 36

4.1 Swap Branch ... 36

4.2 Change Exit ... 37

4.3 Changing Branch Routing at a Tee ... 38

4.4 Changing a Component Connection Reference Explicitly ... 38

5 Positioning Commands for Branch Head/Tail ... 40

5.1 General ... 40 5.2 Distance ... 41 5.3 Through... 43 5.4 Move ... 45 5.4.1 Distance ... 45 5.4.2 Through ... 45 5.4.3 Clearance ... 46 5.5 Drag ... 47 5.5.1 Distance ... 47 5.5.2 Through ... 49

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6.2 Replacing Fixed-Length Trays with Implied Straights ... 52

Exercise 3 Create Branch and Add Fixed Length Tray... 53

7 Quick Cable Tray Routing using the Model Editor... 54

7.1 Extend Handle Pop-ups... 55

7.2 Rotation Handle Pop-ups ... 56

7.3 Setting Increment Values ... 57

8 Copying and Deleting Branches/Components ... 58

8.1 Copy an Inline component ... 58

8.2 Copy a Branch... 59

8.3 Deleting a Cable Tray / Branch ... 60

8.4 Deleting individual components... 60

8.5 Delete a Range of Cable Tray Components ... 61

Exercise 4 Cable Tray Routing – A Worked Example ... 62

Exercise 5 ... 72

Exercise 6 ... 72

Exercise 7 ... 72

9 Data Consistency, Isodraft and Reporting ... 74

9.1 Data Consistency ... 74

9.2 Isodraft ... 75

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CHAPTER 1

1 Introduction

Cable tray routing is an important activity on any large project. It uses the same principles and concepts as pipe routing, one of the major strengths of PDMS.

1.1 Aim

The aim of the course is to provide the skills required to use the Cable Tray Design application in the most productive way and to introduce some of the techniques that are used in the other outfitting applications, have a understanding of Cable Tray isometrics and to have a good basic understanding of the Cable Tray Reports.

1.2 Objectives

At the end of this session, you will able to:

Understand with the basic concepts of cable trays and branches.

Understand the use of cable tray specifications

Understand the concept of branch heads and tails and the importance of component list order and flow direction within a branch.

Create, position and orientate cable tray components.

Apply obstruction level to the cable tray

Use the various positioning options to place cable trays

Run data consistency checks

Produce a simple Isometric from standard option files.

Generate Reports

1.3 Prerequisites

The participants must have completed the Basics and Functions course

1.4 Course Structure

Training will consist of oral and visual presentations, demonstrations and set exercises. Each workstation will have a training project, populated with model objects. This will be used by the trainees to practice their methods, and complete the set exercises.

1.5 Using this guide

Certain text styles are used to indicate special situations throughout this document, here is a summary; Menu pull downs and button press actions are indicated by bold dark turquoise text.

Information the user has to Key-in 'will be red and in inverted commas.'

Annotation for trainees benefit:

Additional information

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System prompts should be bold and italic in inverted commas i.e. 'Choose function' Example files or inputs will be in the courier new font, colours and styles used as before.

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CHAPTER 7

2 Cable Tray Design – Basic Concepts

There is a separate design hierarchy for cable tray routing which follows the same principles as for pipe routing; each cable element may own a number of branches. In turn, branches may own a number of cabling components like bends, risers and reducers.

The difference between cable tray and branches is that a branch is only considered to have two ends, while a cable tray may have any number of ends, depending on the number of branches it owns.

The diagram below shows a cable tray with three ends and two branches. The second branch is connected to the first at the tee. This brings in another rule that says that although a branch only has two ends, it may own components (in this case a tee), which connects to other branches.

These simple concepts enable any number of cable tray configurations to be developed, and form the basis of all the AVEVA Plant cable trays you will encounter.

2.1 Entering a Design Session

To enter PDMS, select: Aveva> PDMS12.0>Run PDMS from the programs menu. The following Login form appears:

Your trainer will advice you of your User Name and Password but typically it is as shown below. BRANCH

TEE

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Enter the ProjectSAM, UsernameUSERA, PasswordA, MDBTRAINA, ModuleParagon and then press

OK

Note: If you cannot get into AVEVA Plant using the training MDB your Trainer may need to run the !!trareset macro from Admin.

Select Design > Cable Trays from the main menu barto enter the Cable Tray application.

2.2 Cable Tray Specifications

In the same way that design offices have standard cable tray specifications for different materials, AVEVA has a set of specifications from which you can choose. In fact all the components you use must be defined in the Catalogue and be placed in a Specification before you can select them. In the Training Project there are three such specifications:

SCTG STANDARD DUTY CABLE TRAY

MDCLG MEDIUM DUTY CABLE TRAY

HDCTG HEAVY DUTY CABLE TRAY

These specifications contain all the fittings you will require for the course exercises.

2.3 Setting the Appropriate Specification

The first task when building a cable tray is to decide which specification you are going to use. Having decided on the appropriate specification, this is then set as an attribute of the cable tray. Any subsequent branches will automatically be assigned with the same specification (although this can be re-specified if required).

When you enter the Cable Tray Application the Default Specification Form is displayed

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If the default specification is required to be changed then select Settings > Default Specification, and select the new specification

If the specification need to be changed for the Main or the Branch select Modify > Main / Branch > Specification from the pull down menu and select the new specification required

The Cable Tray Toolbar is used to manipulate the cable tray specification.

SCTG is the default cable tray specification. Clicking on the Icon to the left displays the Default Specifcation form.

2.4 Cable Tray Creation Form

To Display the Create Cable Tray Main form, select

Create > Main from the pull down menu.

The Create Cable Tray Main form is now displayed Before creating the cable tray we must first navigate to the correct position in the hierarchy using the Design Explorer, then in the Create Cable Tray form key in the Cable Tray name, CTRAY_YY3, select the required Cable Tray specification SCTG, then press OK

The Create Cable Tray Branch form is then displayed.

2.5 Cable Tray Branches

Branches serve two purposes:

They define the start and finish points of a cable tray route (known as the Head and Tail in AVEVA Plant). They own the cable tray components, which define the route.

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The position and order of the cable tray components below branch level determine the physical route. In AVEVA Plant you only ever need to consider the fittings, because the cable tray that appears between fittings is automatically set according to the specifications of the fittings.

2.6 Cable Tray Branch Heads and Tails

All branches need to have a start and end point. These can be a position in space (3D co-ordinates), the flange face of an equipment nozzle or pipe, a tee or various other points in your design. Heads and tails are set up via a series of attributes that belong to the branch element.

The attributes for heads of branches are: -

HPOS The position in the zone where the branch starts. HCON The connection type of the branch end (BOXI or OPEN).

HDIR The direction in which the start of the branch is pointing (as if you were looking down the tray / ladder).

HBOR The width of the cable tray (this can be metric or imperial).

HREF The name of the item to which the branch head is connected (e.g. Href TEE 1 of BRANCH /CTRAY_YY2/B1). If this is not set, then the branch is open.

HSTU This is a reference to the catalogue, which determines the material of the first piece of cable tray, between the start of the branch and the first fitting (this still needs to be set, even if there is a fitting connected directly to the head).

The attributes for tails of branches are: -

TPOS The position in the zone where the branch ends.

TCON The connection type of the branch end (BOXI or OPEN).

TDIR The direction in which the end of the branch is pointing (as if you were looking back down the tray / ladder).

TBOR The width of the cable tray (this can be metric or imperial).

TREF The name of the item to which the branch tail is connected (e.g. Tref TEE 1 of BRANCH /CTRAY_YY2/B1). If this is not set, then the branch is open.

You do not need to specify each of these attributes every time you create a branch. On most occasions when you connect a branch to a tee, the attributes for the head or tail are set automatically.

Direction of Flow Riser Riser Head Tail

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2.7 Cable Tray Branch Head / Tail Positioned Explicitly

Each new branch must have its two ends (its Head and its Tail) positioned in the design model. When you press OK to confirm the creation of the branch, you will see the Branch at Explicit Position form which lets you specify these positions. The Branch at Explicit Position form may also be shown by selecting Modify > Branch > Explicit. This form lets you position and orientate the branch head and tail explicitly and define the connection type for each.

Set the Head / Tail option button to show the end of the branch which you want to position and orientate. Define the Position by entering the required coordinates in the North / South, East / West and Up / Down text boxes, using the option buttons to set the appropriate direction in each case.

Use the Width option button to change the tray width at the Head / Tail if required. Enter the Direction in which the head / tail is to be orientated.

Use the Connection option button to select how the tray is to be terminated at the Head / Tail. The options are Open the end will be left open for connection to another tray length (in another branch) or Boxing the end will be closed to terminate the tray length.

Change the Head / Tail option and repeat for the other end of the current branch if required.

If you use this form to change the width of an existing branch, you must reselect all components owned by the branch so that they are compatible with the new width. To do so, navigate to the branch and select Modify > Branch > Reselect. You will see a Reselect Branch form. When you click Apply, all branch components will be reselected automatically in members list order. Depending on the current Choose options for the cable tray, you may need to choose from the available types for some components. (Note that the Choose form applies to the component next to the one highlighted in the Members List, not to the current element which you have just chosen).

Selecting components with different sizes in a preconfigured pipeline or cable tray network can lead to incorrect geometry. Check the effects by studying the 3D View and, if necessary, running a Data Consistency Check.

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2.8 World Co-ordinates

Position wrt World - the position with respect to the world i.e. absolute co-ordinates.

Within AVEVA Plant each element has a default orientation and lie in a particular orientation with respect to an axis system labelled X, Y and Z. These axes relate to the World co-ordinates as follows:

X = EAST -X = WEST

Y = NORTH -Y = SOUTH

Z = UP -Z = DOWN

The default setting is E, N, U but this can be changed by entering COORDINATES XYZ or COORDINATES ENU In the Command Window

2.9 Cable Tray Branch Components (Fittings)

When you first define a head and tail for a branch, your branch will consist of one piece of cable tray running in a straight line between the head and tail positions. This will appear as a dotted line between the two points unless the head and tail are aligned along a common axis. (The dotted line indicates that the branch route is geometrically incorrect.)

The next step in designing a cable tray is to create and position a series of fittings, which define the cable tray route you require. Just as on a drawing board, you need to decide which cable tray components are needed in order to satisfy the requirements of the process. The components must be arranged so that the cable tray meets its design needs. However, unlike on the drawing board, you do not need to know any fitting dimensions, as PDMS derives these automatically from the catalogue.

To create cable tray fittings, you need to select an item from the list of fittings available to you from the associated cable tray specification. The main types of fitting available are Bends, Elbows (Risers), Tees, Reducers, Crosses, and Fixed Tray (FTUB).

For all cable tray components, you will need to carry out the following steps: Select the component from the cable tray specification

Position the component and set the orientation. Head

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From the pull down menus select Create > Component

The Cable Tray Component form now appears. This form shows all the component types that are available in the current cable tray specification. It is possible to select components from an alternative specification by reselecting from the Cable Tray pull down list:

Normally you will define the Branch Members in Forward mode, that is, one after the other, starting at the Head. Sometimes it is more convenient to build your branch from the Tail first. Then you will need to work in Backwards mode.

If the Auto Conn button is ticked, then this will ensure that components are automatically connected to the previous component.

Components are created by selecting the required fitting from the scrollable list and then using the Create

button. The Choose form displays all available components for the bore size and specification.

2.9.2 Selecting the Component from the Specification

When you select a component, e.g. a Tee, from the catalogue, there are often a number of choices you can make. The description of the item can be presented to you in one of three ways

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Basic the least amount of information is displayed

Text description and material displayed;

All all available data is shown.

This can be set by selecting Settings > Choose Options; the Choose Options form is displayed

This selection criteria setting will determine the amount of information displayed. Auto Connect can also be set from this form.

Selection Criteria: All

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2.9.3 Branch Component List Order

With equipment and structures, the order in which you create items is of no importance to the final outcome. With cable tray components, the order in which they are laid out, as well as their individual positions and orientations, determines the final cable tray route.

Below is a Design Explorer window showing the components of a typical cable tray. The current element is highlighted.

Any new item in the branch will appear after the item you were at when you select Create. The new item then becomes the current element. The only slight deviation from this is when you are at a new branch, in which case the new item will be the first item in the branch.

List order will become second nature to you after you have created a number of branches, but for the time being you should be aware of it and should consider carefully where your next item is going to be inserted.

2.9.4 Automatic Positioning and Orientation of New Components

When you select a component, you will notice that in many cases you do not need to go through the stages of positioning and orientation. This is because the component is automatically connected to the previous one.

2.9.5 Positioning and Setting the Orientation of Components

Having created and chosen a component, the next stage is to position it. If it is the first component in the Branch you will be asked to specify the Open Tray Direction.

On component creation, there is an option ‘Auto Conn’ which automatically connects the component to the previous component (or to the Branch Head if it is the first component).

Components can be positioned using the lower button on the Cable Tray Components form, or by using any selection from the Modify, Position or Orientate options from the Cable Tray Application menu.

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2.9.6 Arrive and Leave Points

Cable tray components have P–points (similar to those for equipment primitives). The significance of P– points is two–fold. First, they define the connection points, and second, they determine the branch flow through the component by means of Arrive and Leave attributes.

For the reducer shown below, you will see that the large end is at P1 and the small end is at P2. If you use this component to increase the width of the branch, the flow in the direction of the branch will be from P2 to P1. In order to tell PDMS the flow direction you want, you set two numeric attributes, Arrive and Leave, to the p–point numbers you want. In this case, Arrive would be set to 2 and Leave would be set to 1. (The default is Arrive 1 Leave 2).

Reducer Bends

Tees Elbows or Risers

2.10 Save Work

Save Work saves any changes you have made to the model, this should be done at regular intervals to suit the design, the Model Editor Undo and Redo function buttons can be used up to the point that the design is saved.

To save the Design, select Design > Save Work from the pull down menu or use the Save Work icon from the Toolbar.

A Confirm form now appears, asking if it is ok to ‘Savework! Are You Sure’. Press Yes

to confirm and No to Cancel.

P1 Z P2 P3 Y X P1 P0 P2 X Z Y P1 P2 P0 X Y Z P3 P0 Y X Z P1 P2

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2.11 Get Work

Get Work updates your current view of the AVEVA Plant databases with work saved by other users. To Get Work, select Design > Get Work

from the pull down menu or by pressing the Get Work icon from the Default Toolbar.

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Exercise 1 Create a Cable Tray

Create a new ZONE 101C-CABLEWAYS, Create the Cable Tray Main CTRAY_YY010 and set the specification to SCTG.

Position the Head N 2000, E 45500, U15500 and the Tail N 2000, E 40000, U 14250.

Set the width as 600 for the Head and 450 for the Tail and the direction to W for the Head and E for the Tail. Set the connection to open for both Head and Tail.

Add two Elbows as shown:

Head

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CHAPTER 7

3 Positioning and Connecting Cable Tray Components

At the end of this session you will be able to:

Connect branch Head / Tail to the Tail / Head of another branch, or to a multiway component, and to the First / Last component within the branch.

Connect adjacent components within a branch sequence.

Understand the various menu options for positioning components.

A Connect command both Orientates and Positions the current component so that its p-arrive is directed towards, and is aligned with, the p-leave of the previous component (in forwards mode). Unless overridden, Connect also checks that the components to be connected have compatible connection types (as defined by the Connection Compatibility Tables in the Catalogue database).

3.1 Connecting the Branch Head or Tail

Using the Design Explorer window navigate to Branch level or below.

Select Connect > Branch, the Connect Cable Tray Branch form appears. Select Head to First Member and then press Apply. The Head position is moved to the first member (component) in the Cable Tray.

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3.1.1 Connecting to the Head / Tail of another Branch

Using Design Explorer, navigate to Cable tray level and from the pull down menu select Create > Branch. The Create Cable Tray Branch form will be displayed, press OK

The Branch at Explicit Position form appears, press the Dismiss button

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From the main bar menu select Connect >

Branch, the Connect Cable Tray Branch form appears set the Head to Tee and press Apply

The additional options on the pull down menu under Tee are as follows: Multiway Branch Head Branch Tail First Member Last Member Name

You will see a prompt in the bottom left corner asking you to Identify TEE. Use the cursor to pick the item in the graphical view to be connected to and then press Dismiss

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3.2 Connecting a Component

Using Design Explorer, check that you are at the correct level for the components to be created, in this case at the branch level

From the pull down menu select Create > Component, the Cable Tray Component form appears. In this case we are going to add a bend to the newly created branch, select Bend and then press Create.

The Choose form appears, select the RH 90 bend and press OK

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The Bend is added to the Branch, select the Model Editor icon from the Model Editor Toolbar

The Cable Tray modification Handle now appears, using the left hand mouse button drag Y directional handle and move the bend 1000mm

Release the left hand mouse button and press the Model Editor icon once again to deactivate the Cable Tray Modification Handle.

3.2.1 Connecting a Component to Previous / to Next

Using either the Design Explorer or the graphical view select the required component to connect to previous or to next. From the pull down menu select Connect> Component > To Previous/ To Next

By default, arrive of the current component will be connected to leave of the previous component or p-leave of the current component will be connected to p-arrive of the next component (in Forwards mode).

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To Previous

With the tray Head being the previous connection the elbow is connected to the tee component which was at the Head

To Next

With the tray Tail being the Next connection and Open a Open Tray Direction form appears, Key in the Open Tray Direction required and press OK

3.3 Displaying Cable Tray Fill Level

While the cable tray route is being designed, it may be necessary to show the fill level of the cable tray, this is done by changing the obstruction % against the component.

From the pull down menu select Settings > Graphics, the Graphics Settings form appears. Select the Representation Tab, then from the Obstruction pull down select 50% and press the Apply button

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The majority of positioning of cable tray items can be performed from the Cable Tray Components form.

The positioning pull down menu has the following options: Thro Cursor Thro ID Cursor Thro Point Thro Next Thro Tail Thro Previous Thro Head Connect A cursor-identified 3D position Cursor-identified item An identified p-point

The next item in the Branch The tail of the Branch Theprevious item in the Branch

The head of the Branch Connects to the previous component

There are many other ways to position cable tray components and these are explained in the following pages.

3.5 Positioning Components

The Position Component options enable you to move a component without specifying a direction. The direction of movement is the direction of the component. The options are as follows:

Distance Through

Clearance

Plane Through

Plane Clearance

Moves the component by a given distance.

Moves the component along a given point.

Moves the component to within a given clearance of a give item or point.

Moves the component along the line of the branches so that the component moves until it intersects a plane through a given point.

Extends the arrive tube so that the component moves until it is within a given clearance of a plane through a given point

3.5.1 Distance

Allows you to position the component at a given distance from a specified point. The direction of movement and the distance are along the current component’s arrive / leave axis

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From the pull down menu select Position > Component > Distance, a positional axis appears on the component in the graphical view.

On the Distance form key in the Distance you need to move the component.

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Positioning options on the pull down menus are as follows:

Only Spool Only

Infront / Behind

Onto / Under

From/ To

Position is relative to previous item.

Positions component at given distance from next to achieve required tube length between them.

Can be used for any direction in a plan view. Distance is

measured along direction of movement, relative to a specified point

Can be used for any N, S, E or W view direction. Distance is measured along direction of movement, relative to a specified point.

Can be used with any direction in an elevation view. Distance is measured along direction of movement, relative to a specified point

The second pull down specifies the reference point from which the distance is measured. The choices are:

Cursor ID Cursor ID P-Point Coordinate Name Pin Next / Previous Head / Tail Current A cursor-identified 3D position

A cursor-identified item whose origin is at the required position. A cursor-identified p-point at the required position

An explicit position whose coordinates you will enter A named item whose origin is at the required position

A numbered construction pin at the required position

Adjacent component in branch members list.

Head or tail of owning branch. Current item (used to reposition component when previous item in branch members list has been moved).

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In this example we have selected Distance 1500mm From Previous, press Apply. Other combinations will require the user to either pick with the cursor or enter data on the resulting form, depending on how you chose to specify the position

Use the CE button if you want to move another component before dismissing the form

3.5.2 Through

Allows you to align the component with a specified point. The direction of movement is along the current component’s arrive / leave axis

From the pull down menu select Position > Component > Through, the Through form appears.

On the pull down set the Through option to specify the point with which the component is to be aligned.

In this example we have selected Through Tail, press Apply. Other combinations will require the user to either pick with the cursor or enter data on the resulting form, depending on how you chose to specify the position

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3.5.3 Clearance

Allows you to move the component until it has a given clearance from a specified point. The direction of movement is along the current component’s arrive / leave axis

From the pull down menu select Position > Component > Clearance, the Distance form appears.

On the Distance form key in the Clearance required.

Select Clearance 100mm Behind ID P-Point, press Apply. And then pick the P-Point with the cursor.

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3.5.4 Plane Through

Allows you to move the component until it intersects a plane through a given point. The direction of movement is along the current component’s arrive / leave axis

From the pull down menu select Position > Component > Plane Through, the Plane Through form appears.

You define the plane by specifying its direction (defined as the direction normal to the plane’s surface) and a point through which it passes.

On the Plane Through form In the Plane text-box, enter the direction of the plane and use the Through option to show how you will specify the reference point through which the plane passes.

In this example we have selected Plane S and Through Cursor, press Apply. And then indicate with the cursor the position.

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3.5.5 Plane Clearance

Allows you to move the component until it has a given clearance distance from a plane through a given point. The direction of movement is along the current components’ arrive / leave axis.

From the pull down menu select Position > Component > Plane Clearance, the Plane Clearance form appears and an axis in the graphical view on the component to move.

You define the plane by specifying its direction (defined as the direction normal to the plane’s surface) and a point through which it passes.

On the Plane Clearance form In the Plane text-box, enter the direction of the plane, Enter the Clearance distance relative to the plane.

Using the two pull down menus to define how the clearance is related to the plane.

In this example we have selected Plane S with a Clearance of 1000mm From the Previous component. press Apply.

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Exercise 2 Adding and Positioning Components

Add a Tee and a 450mm Reducer to the previously created Cable Tray CTRAY_YY010

Position the components as shown using the Position >Component and Connect > Component pull downs.

1000

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CHAPTER 7

4 Branch Re-routing and Connection References

At the end of this session you will be able to:

Modify the offline leg direction of a TEE

Change branch direction and routing

Understand how to set/modify connection references for a multiway component.

This session describes how to modify the off-leg direction of a TEE component and how to change branch direction/routing at a TEE.

4.1 Swap Branch

Swap Branch allows the user to change the Offline leg Direction of a TEE.

To rotate a TEE through 180 degrees, so that the direction of its offline leg (P3) is reversed, navigate to the component and select Orientate > Component > Swap Branch.

To check the orientation of P3, select Query > General from the pull down menu. On the Query form, select P3 from the second pull down. This shows the direction of P3 i.e. S

Now select Orientate > Component > Swap Branch.

The Branch P3 position is swapped, if the P3 point is queried again its direction will be North.

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In order to retain the correct orientation for the open side of the tray, this operation results in the p-arrive (P1) and p-leave (P2) directions being reversed. To maintain connectivity, p-p-arrive is reset to P2 and p-leave is reset to P1 automatically.

4.2 Change Exit

Change Exit allows the user to change the Branch Direction at a Tee / Bend

By default, p-arrive for a tee is set to P1, p-leave is set to P2, and the off-leg (for connection to, say, another branch) is set to P3.

To change the p-leave from P2 to P3, navigate to the tee and select Orientate > Component > Change Exit. Repeated use of this operation toggles p-leave between P2 and P3.

This can also be used at a Bend to change the direction the p-leave is. It Swaps the p-arrive and p-leave, so that P1 is p-leave, and P2 is p-arrive.

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4.3 Changing Branch Routing at a Tee

By default, the p-arrive of a tee is set to P1 and the p-leave is set to P2, so that the branch route continues straight through. To change the p-leave so that the branch route enters or leaves the tee via P3, select

Modify > Component > Route.

Click the radio button which corresponds to the required branch routing configuration. The options are:

Route Through Branch Off Split Route

When you Apply the change, the tee will be orientated automatically to suit the new configuration. You can use the CE button to change the branch routing at other tees before dismissing the form.

4.4 Changing a Component Connection Reference Explicitly

When you connect a multiway component within a branch to another item (such as a nozzle, or the head or tail of another branch), the Connection Reference (CREF) attribute of the component identifies the

connected item.

To unset the component reference, or connect it to a different item, use Modify > Component > Connection Ref.

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For a tee, the Connection Reference form shows the item connected to the off-line leg (usually P3).

For a 4-way (or more) component, use the No. pull down to see each connection reference in turn. Components with more than one off-line leg have a CRFA attribute which is used to store the

connection reference at each p-point.

To disconnect the current connection, click the Unset button.

To change the current connection to point to a different item, edit the identifier in the text-box.

Changing the connection reference does not change the position or orientation of any components, so you must ensure that the resulting geometry makes sense.

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CHAPTER 7

5 Positioning Commands for Branch Head/Tail

This session covers the explicit and relative positioning of Branch Heads and Tails. Use Position> Branch from the main bar menu.

The sub options are as follows:

General Distance

Through

Move

Drag

Positions the Head / Tail at a given point

Moves the Head / Tail along the current branch direction until it is a given distance from a given reference point

Moves the Head / Tail along the current branch direction until it is aligned through a specified point

Moves the Head / Tail in a given direction by a given Distance, Through a given point, or to within a given Clearance of another item

Allows you to move a constrained network in a given direction by a given Distance, Through a given point, or to within a given Clearance of another item

5.1 General

From the main bar menu select:

Position > Branch > General.

The Branch at General Position form appears together with an axis in the graphical view,

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On the Branch at General Position form, select Head or Tail, as required. Then set the At pull down menu to define how you will specify the required position.

In the example below, we have selected the Head At ID P-Point, press Apply.

Use the CE button if you want to move the Head / Tail of another branch before dismissing the form.

5.2 Distance

From the pull down menu select Position > Branch > Distance, the Position form appears together with an axis in the graphical view.

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On the Position form, select Head or Tail, as

required. Then key in the Distance required. The positioning options are shown on the two pull down menus.

On the second pull down, the options are as follows: Cursor ID Cursor ID P-Point PH of ID Branch PT of ID Branch Coordinate Name Pin A cursor-identified 3D position A cursor-identified item whose origin is at the required position A cursor-identified p-point at the required position

The head of another branch (which you will pick with the cursor) The tail of another branch (which you will pick with the cursor) An explicit position whose coordinates you will enter

A named item whose origin is at the required position

A numbered construction pin at the required position

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In this example we have selected Distance 500mm Behind ID P-Point, press Apply.

Use the CE button if you want to move the head/tail of another branch before dismissing the form.

5.3 Through

From the pull down menu select Position > Branch > Through

On the Position form, select Head or Tail, as required. Then set the Through option to the point with which the Head / Tail is to be aligned. In this example we have selected Head Through ID P-Point, press Apply.

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5.4 Move

Move allows you to move the Head / Tail in a given direction by a given Distance, Through a given point, or to within a given Clearance of another item.

5.4.1 Distance

From the pull down menu select Position > Branch > Move > Distance

On the Position form, select Head or Tail, as required, enter the Required Direction and Distance of the move, then press Apply.

In this example we have selected Head, Direction S, Distance 750mm.

Use the CE button if you want to move the head/tail of another branch before dismissing the form.

5.4.2 Through

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On the Move Branch Through form, select Head or Tail, as required. Then set the Direction and finally set the Through pull down to show how you will specify the point with which the Head / Tail is to be aligned.

In this example we have selected Head, Direction N, Through ID P-Point, press Apply.

Use the CE button if you want to move the Head / Tail of another branch before dismissing the form.

5.4.3 Clearance

From the pull down menu select Position > Branch > Move > Clearance

On the Move Branch Clearance form, select Head or Tail, enter the Direction and Clearance distance required. Pull down menu options are similar to those used in the previous examples.

Select Head, Direction S, Clearance 250 Behind ID P-Point, press Apply.

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5.5 Drag

Drag allows you to move a constrained network in a given direction by a given Distance, Through a given point, or to within a given Clearance of another item

A constrained network is a collection of cable tray components, equipment and nozzles formed automatically during a Drag operation. The Drag action moves all items in the constrained network as a group, retaining their relative positions and connectivity.

The network comprises all items connected to the current element in all directions up to a legal end point. A legal end may be any of the following:

FTUBE which can be extended or shortened parallel to the move direction A nozzle

A point between misaligned components

A point between incompatibly-connected components A component which has not been positioned and orientated An element which you do not have access rights to move

5.5.1 Distance

Distance drags the branch Head / Tail, together with other connected components, equipment and nozzles within a constrained network, by a given distance in a given direction.

From the pull down menu select Position > Branch > Drag > Distance

On the Drag,Move Branch Distance form, select Head or Tail, as required, and enter the Direction and Distance for the drag. Press Apply

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A confirm form now appears, asking if the branch should Return to Original Position, press No

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5.5.2 Through

Allows you to drag a constrained network, along a specified direction until it is aligned with a specified point From the pull down menu select Position > Branch > Drag > Through.

On the Drag Move Branch Through form, select Head or Tail. Specify the Direction and select the Through pull down menu as appropriate.

In this example we have selected Head, Direction N, Through ID P-Point, press Apply. The confirm form appears as before, press No

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5.5.3 Clearance

Allows you to drag a constrained network along a specified direction until it is a given clearance from a specified point.

From the pull down menu select Position > Branch > Drag > Clearance.

On the Drag Move Branch Clearance form, select Head or Tail, enter the Direction and Clearance distance required.

Pull down options are similar to those used previously.

Select Head, Direction S, Clearance 250mm Behind ID P-Point, press Apply.

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6 Fixed Length Trays and Implied Straights

Implied straights in Cabletrays can be compared with implied tubing for piping. Implied straights occur where there is a physical distance between consecutive list order components. Implied straights can be replaced by fixed length tray (FTUB) elements.

6.1 Replacing Implied Straights with Fixed-Length Trays

To add fixed-length tray (FTUB) elements to all or part of the current branch so as to replace implied straights, select Modify > Fill.

The Fill Cable Tray Branch form appears. Set the Fill pull down to specify which part of the branch is to have fixed-length trays inserted. The options are:

Branch .

Components

Head to Component

Component to Tail

replaces all implied straights with fixed-length trays for the entire branch.

inserts fixed-length trays between two specified components.

inserts fixed-length trays between a specified component and the branch head.

inserts fixed-length trays between a specified component and the branch tail.

The fixed-length trays used are derived from the current branch specification. The number of trays used in each location is calculated from the length of the implied straight which they replace.

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In this example we have selected Fill Branch, press OK.

6.2 Replacing Fixed-Length Trays with Implied Straights

To remove fixed-length tray (FTUB) elements from all or part of the current branch, select Modify > Unfill.

The Unfill Cable Tray Branch form appears. Set the Unfill option button to specify which part of the branch is to have fixed-length trays deleted. The options are as for Modify>Fill. In this example we have selected Unfill Branch, press OK.

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Exercise 3 Create Branch and Add Fixed Length Tray

Using the example form the previous exercise, Create the branch from the Tee, add the 600mm bend and 600x450mm reducer to the branch.

Position the bend and the reducer as shown. Position the tail 500mm away from the leave of the reducer. Fill the cable tray branches with fixed length tray.

1000

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CHAPTER 7

7 Quick Cable Tray Routing using the Model Editor

The Model editor allows the user to select and drag components along a specified direction and to rotate components around their origin point. The editor uses three handles:

Extend Route Handle This is used to extend the route in the direction indicated by the handle.

Cardinal Direction Handles These are used to move components in a cardinal direction

Rotational Handles These are used to rotate components about their origin.

For cable tray components the model editor should only be used to move components within the route direction.

The model editor can be used to quickly correct geometrical inconsistencies within the cable route.

The handle can be dragged by using either the LHS or RHS mouse buttons. By default the handle will move in multiples of the currently defined linear increments.

If the RHS mouse button is pressed when the cursor is over the cable tray routing handle, the user will be presented with a context sensitive menu. The menu will display the available options which relate to the drag. Cardinal Direction Handles Extend Route Handle Rotational Handles

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7.1 Extend Handle Pop-ups

The following options are available on the Extend Handle before a drag.

Enter Offset This gives the Constrained Move form which lets you enter an offset from the current handle’s position in the current routing direction.

Enter Leg Length This gives the Leg Length form which lets you enter an absolute distance of the handle from the last previous change in the direction’s position.

Distance From Origin This displays the Explicit Distance form which allows you to enter an absolute distance of the handle from the previous component’s origin position.

Extend Through Feature This allows you to identify features with which to align, along the current route direction.

Orient to Point This directs the handle either directly to a point feature or rotates about the vertical axis, maintaining horizontal offset, when a linear feature is identified.

Align with Direction This allows you to identify features with which the handle is to be aligned.

Explicit Direction This gives the Enter Direction for <direction> Axis form which lets you enter an explicit direction for the handle.

Component Choice This allows you to select the type of Component that is created by the Routing Handle when a change in direction occurs. The Component can be set to either

Elbows or Bends.

Distance Feedback This allows you to select how the Routing Handle displays distance feedback. This can be set to either Offset (offset from the previous handle’s position), Leg Length

(distance of the handle from the last previous change in direction’s position), or

From Origin (distance of the handle from the previous Component’s origin position). Use the D 'hotkey' to cycle through the options.

Show Rotation Handles This toggles the display of the Rotation Handles (selected by default).

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The following options are available on the Extend Handle on completion of a drag, i.e. when the mouse

button has been used to drag the handle and no special actions are active:

Extend Leaves the handle at the shown position.

Cancel Returns the handle and selection to its original state before the drag.

7.2 Rotation Handle Pop-ups

The following options are available on the Rotation Handle before a drag

Enter Value This gives the Rotate Selection About form, enabling you to enter a value to rotate the graphical selection about the selected rotational axis

Orient to Point This allows you to pick a p-line through a point with which to orient the Rotation Handle.

Align with Direction This allows you to identify features with which the handle is to be aligned. Planes will be displayed to indicate a p-point direction (pointer symbol) or a p-line direction (symbol). Pressing and releasing the SHIFT key will reverse the direction of the handle.

Align With Thisdisplays the Enter Direction For <direction> Axis form which allows you to align the handle with a specified direction, or as close as possible to the given direction, about the axis of the cable tray.

Rotate Handle Allows you to rotate the Locator Handle, using the same movement options as the main Rotation Handle menu. These options move the Locator Handle only; they do not move the Graphical Selection. Alternatively a 'freehand' movement of the Rotate Handle can be accomplished by pressing the H key with the handle selected and the left mouse button held down.

The Locator Handle may be rotated independently of the Graphical Selection in order to change the frame of reference for the next operation on the Graphical Selection.

Rotate Handle > To World This option aligns the Locator Handle with the World co-ordinate system, without rotating the Graphical Selection. The Locator Handle Y axis points North and the Z axis points Up.

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7.3 Setting Increment Values

Select Selection > Set Increments from the main menu.

The Set Increments form is displayed, the Linear increment will change the value of the handle when dragged, the Fine linear increment will change the value when the keyboard arrows are used, and the Angular increment will change the value of the handle when rotated.

The Linear increment is specified in the currently active units. The Linear increment controls the step size used when dragging a Graphical Selection using a linear or planar handle. The default step size in 50mm or 2 inches.

The Fine linear increment has the same function as the linear increment, but with a default step size in 5mm. Fine 'nudges' are achieved but using the '2' and '8' numeric keypad keys or the arrow keys with the mouse button held down

The Angular increment controls the angular step size used when dragging a Graphical Selection using a rotation handle. The default step size is 5 degrees

In the Fine linear increment change the default value 5 to 1 and press the OK button

Now select the pipe modification handle, press the arrows on the keyboard and the increments now should just move 1mm at a time.

Linear increment Fine linear increment Angular increment

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8 Copying and Deleting Branches/Components

8.1 Copy an Inline component

From the Design Explorer or the graphical view select the inline component to copy, now from the pull down menu select Create > Copy > Offset

or

The Copy with Offset form appears and in the graphical view an axis is displayed on the component. Key in number of copies and the offset against the required direction, then press Apply

A Confirm form appears, asking if the user wants to Retain created copies? Press Yes

The inline component is now copied, if no more copies are to be made the Copy with Offset form can be closed, press the Dismiss button.

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8.2 Copy a Branch

If you have a branch of the cable tray that contains similar components, the complete branch may be copied and moved into another position.

To create the copy, select the branch that you require to be copied from the Design Explorer or by selecting the items from the graphical view, select Create > Copy > Offset from the pull down menu.

As for the inline component, the Copy with Offset form appears. Key in number of copies and the offset required, press Apply

A Confirm form appears, asking if the user wants to Retain created copies? Press Yes. The branch is now copied, if no more copies are to be made the Copy with Offset form can be closed, press the Dismiss

button.

The Head and Tail positions for the branch will now need to be reconnected and the branch can be renamed using Modify>Name

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8.3 Deleting a Cable Tray / Branch

Using the Design Explorer indicate the Cable Tray / Branch to be deleted, press the right mouse button and from the pop up menu select Delete.

Items can also be deleted by selecting Delete > CE from the pull down menu.

A confirm form appears, asking if it is Ok to delete the Branch? Press Yes. The branch is deleted and the graphical view is updated as shown below.

If a cable tray / branch has been deleted by mistake and the changes have not yet been saved then by pressing the Undo icon from the Model Editor Toolbar, the cable tray / branch will brought back and visible in the Design Explorer and the graphical view once again.

8.4 Deleting individual components

Using the Design Explorer or the graphical view highlight the component to be deleted, press the right mouse button and from the pop up menu select Delete.

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A confirm form appears, asking if it is Ok to delete the component? Press Yes. The component is deleted and the graphical view updated.

8.5 Delete a Range of Cable Tray Components

It is possible to delete a number of components in the same cable tray or branch by picking the components in the graphical view whilst holding down the Ctrl key.

Select Edit > Delete Selection. The components are deleted and the graphical view updated. Note that a dotted line is drawn between the remaining TEE and BEND.

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Exercise 4 Cable Tray Routing – A Worked Example

The first thing to consider when using the Cable Tray application is the specification you are currently using as default.

The following exercises will illustrate different means of cable tray routing by giving examples of many of the situations you will encounter.

The following worked example demonstrates how to build up the cable tray component sequence illustrated below. It assumes that you have already set your default specification to SCTG.

1 PH

PT

N

2

3 4,5

6

7

8

9

11

10

12

13

14

15

BRANCH /TRAY-1/B1 showing input sequence Figure 1

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Create> Zone

Create the hierarchy in which the Cable tray is to be routed.

Press OK

Create> Main

Press OK,

A Create Cable Tray Branch form is shown automatically

When you select OK, a Branch at Explicit Position

form is shown.

Connect>Branch

Position each end of Branch to its termination point (HEAD & TAIL)

Input these values to start the branch at the upper penetration of the east wall at the south corner named

/EASTHOLE1. Select Apply and then Dismiss the form.

This form allows the HEAD and TAIL connections to be specified.

On dismissal, a “dotted” line appears in the graphical view joining the HEAD and TAIL

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Create>Component

We will now choose a Tee that will be connected to the HEAD automatically and then repositioned.

Press the Create button

Fig 1 (Tray Ref. 1) Because the Default button on the Cable Tray

Components form is not set, you will be shown a form giving the available tee options. Pick one and press

OK.

If your Choose form does not have the component description set, modify the choose options.

To do this use:

Settings>Choose Options then select ALL

Set the open tray direction to U.

The Tee will be positioned at the start of the branch (head) because the Auto Connect button is ticked.

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Position the Tee using Through ID Cursor from the

Create Cable Tray Components form and select the penetration in the floor near the centre of the south wall named /FLOORHOLE1.

Create another Tee in the same way as above and position it through the next penetration named

/FLOORHOLE2.

Fig 1 (Tray Ref 2) Create a Bend from the Cable Tray Components List.

The Bend will be connected to the previous Tee because Auto Conn has been switched ON.

The Cable Tray Components form will now be left on display until the entire Cable Tray has been routed.

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Position the Bend through the penetration in the wall

named /INTHOLE1.

The leave side of the Bend should point “North”. If it doesn't use

Orientate>Component>Change Exit

The Bend’s direction should be facing North, as shown in Fig 1

Create a Riser and select the OR 90 type (90 deg. elbow outside radius), and position it a Distance 5000

and the leave should automatically point down.

Create another Riser and select the IR 90 type (90 deg. elbow inside radius), and use Through ID Cursor

to position it through the penetration named /INTHOLE2. The leave should automatically point North

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Create a Bend using the Cable Tray Components

form and select the RH 45 deg. ANGLE type. Position it a Distance 5000 from the previous component.

Create another Bend and select the LH 45 deg. ANGLE type.

Position this using the Position>Component>Plane Through.

Select a Plane E and Through ID Cursor and pick the penetration in the wall named /INTHOLE3.

Dismiss this form.

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Next, Create a Bend and select the RH 90 deg.

ANGLE type.

Use Through ID Cursor to position it through the penetration named /INTHOLE4

Fig 1 (Tray ref. 8) Create a Tee and select the type with PBOR3 600.

Position the Tee using Through ID Cursor from the

Create Cable Tray Components form and select the penetration in the floor near the centre of the north wall named /FLOORHOLE3.

Fig 1 (Tray ref. 9)

Create a Reducer and select the type PBOR1 450 CONC. Position it a distance 2500 from the previous component.

The tray we are now creating is 450mm wide.

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Create a Bend from the Cable Tray Components form and select the LH 45 deg. ANGLE type. Leave it connected to the previous component.

Fig 1 (Tray ref. 11) Create another Bend from the Cable Tray Components

List and select the RH 45 deg. ANGLE type.

Position this using the Position>Component>Plane Through.

Select a plane N and Through ID Cursor and pick the penetration in the wall named /INTHOLE5. Dismiss

this form.

Create a Tee and select the type with PBOR3 450. Position the Tee using Through ID Cursor from the

Create Cable Tray Components form and select the penetration in the floor near the centre of the north wall named /FLOORHOLE4.

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Create another Tee as above. Position the Tee

using Through ID Cursor from the Create Cable Tray Components form and select the

penetration in the floor near the centre of the north wall named /FLOORHOLE5.

The connection point of the tee should point south but if it points north, change this using

Orientate>Component>Swap Branch.

Fig 1 (Tray ref. 14) Create another Riser and select the OR 90 type

(90 deg. elbow outside radius).

Use Through ID Cursor to position it through the penetration named /FLOORHOLE6. The leave should automatically point Down.

Fig 1 (Tray ref. 15) To complete the Cable Tray the Tail needs to be

positioned at the penetration named

/FLOORHOLE6.

Select Connect>Branch. This will position the Tail at the P-leave of the last member.

This will set Tail attributes TBOR, TPOS, TCON and TDIR.

To position the Tail at the penetration named

/FLOORHOLE6 select Position>Branch>Move Through.

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The Branch is almost finished apart from it has not been filled.

To fill the Branch select Modify>Fill.. and select

OK.

You cannot fill a Pipe, only a Branch.

If you have made a mistake during your design, it is best to Unfill, do the modification and then Fill

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Exercise 5

Navigate to the site named /CABLESITE that you should see in the members window. Add this to the drawlist and select Limits>CE.

Build the Main Branch of the first cable tray.

Select Design>Cable Trays… to load the Cable Tray application. Refer to the drawing on the next page for positions and components required. The worked example should give enough information to allow you to build it. (This explains how to build the upper tray of the 3. Refer to fig 1 on page 64 whilst following the worked example as each component has an associated reference number ).

Exercise 6

Create all the branches that attach to the tees in the Main.

Hint: Select Create>Branch and OK the Create Branch form. Dismiss the Branch at ExplicitPosition

form that appears as you are going to connect the Branch to one of the tees in the Main Branch. Select Connect>Branch>Head>To Tee and pick the tee. Create and position a riser (OR 90 type) and complete the branch by positioning the tail at the hole in the floor as you did in the previous exercise.

Exercise 7

Create the lower two cable tray Main's. You can use create Copy Offset and modify the design to suit. You will need to rename the Pipes and Branches.

If you have branches of a pipe that contain similar components you may copy a complete branch then move it in position. To create a copy, select the pipe/branch to be copied then choose Create >Copy >Offset . . .

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