Exercise 16 (Optional) Labelling the Drawing (Structural Arrangement)
11.5 Construct
The following sections outline the 2D Primitives available to the User.
11.5.1 Construct Group
The Group form is displayed by selecting Construct > Group from the main menu.
This selection links all the selected elements together in such a way that Draft can track all the items owned by a group. Using groups allows the user to carry out the same operation on a number of elements simultaneously.
The selection of primitives to be included in the group may be carried out by any one of three methods:
Identified allows the selection of individual elements
Crossing allows the user to define a region selecting all elements that are either totally or partially within a defined area
Window allows the user to define a region selecting all elements that are totally within a
defined area.
After choosing the required method of element selection, click the Add button. A prompt will be displayed informing the user to identify the element to be added to the group. After completion of the selection, all group members will change colour.
The Clear button will remove all elements from the group and return them back to their original colour.
The Remove button allows individual elements to be removed from the group and returned to the original colour.
AVEVA Plant (12.1) Drawing Production (Basic) TM-1002
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The Perform Action On Group button displays the Perform Actions on Group form, which is used to enter the syntax required for the operation to be actioned.
Examples of typical syntax are:
nlpn 6 this will change the note line pen to 6.
by y20 moves all group elements 20 units in the +Y direction.
The Filter button allows the setting up of selection criteria to help select the required elements more efficiently. The User may not wish to select any arcs that are green from a particular NOTE/VNOT so by setting the Filter these items can be excluded.
11.5.2 2D Copy
The function is acessed by selecting Construct > 2D Copy from the main menu.
After choosing this option the User is prompted to identify the 2D primitives. To finish the selection the User must click the Cancel button before being prompted to identify an origin point to then position the copy.
11.5.3 Repeat
The function is acessed by selecting Construct > Repeat from the main menu. The following options are available:
Offset: the User will be prompted to identify the 2D primitives. The Point Construction Option form will be displayed and the user will be prompted to identify the base point for number of rows and columns required.
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Polar: the User will be prompted to identify the 2D primitives before identifying the centre point of rotation.
The Polar Copy form is then displayed.
Mirror: the User will be prompted to identify the 2D primitives. The Mirror form will then be displayed.
To define the Mirror Axis the user may use one of three methods:
- Cursor: defines two points to generate a temporary line to be used as the axis - Identified Line: select a 2D primitive
line that will be used as the axis - X & Y co-ordinates: explicit values
11.5.4 Fillet Arc
Acessed by selecting Construct > Fillet Arc from the main menu. The User will be prompted to identify the two joined lines to which the fillet is to be applied. The Fillet form will then be displayed. Enter the Radius then select whether the fillet is to be convex or concave and whether the lines are to be trimmed.
11.5.5 Chamfers
Acessed by selecting Construct > Chamfer Line from the main menu. The User will be prompted to identify the two joined lines to which the chamfer is to be applied. The Chamfer form will then be displayed. Enter the chamfer offsets and select whether the lines are to be trimmed.
11.5.6 Parallel Lines
Acessed by selecting Construct > Parallel Line from the main menu.
The User will be prompted to identify the line to be parallel copied. The Parallel Line form will then be displayed. Enter the value of the offset.
Clicking the Invert button will change the direction of the copy.
11.5.7 Tangent Line
Acessed by selecting Construct > Tangent Line from the main menu. The User will be prompted to identify the arcs or circles for the tangent line.
This will draw a line tangent with two circles or arcs. The tangent will be drawn depending on where you select the circle. A form will be displayed that will allow you to reselect either points on the circles to define a different tangent. When the tangent line is between arcs the user will also have the option to trim the arc to the connection point of the tangent line.
AVEVA Plant (12.1) Drawing Production (Basic) TM-1002
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11.5.8 Ray Line
A Ray Line is a form of construction line.
By selecting Construct > Ray Line from the main menu, the Point Construction Option form will be displayed. The user will be prompted for two points, the first will be the start point and the second will be the through point. The line will continue to the edge of the sheet.
The Ray Line form will then be displayed which allows the User to change the X and Y values of the through point and the angle of the line. The Edit > Line Trim can be used to cut the line back from the sheet edge.
11.5.9 Constructed Line
Acessed by selecting Construct > Constructed Line from the main menu. The Point Construction Option form will be displayed. This option allows the User to draw an infinite line through two given points. It is also possible to use the Edit > Line Trim option to cut the line back from the sheet edge.
11.5.10 Bisector Line
This option will construct a line that bisects the angle formed by two selected lines. The bisector will start at the intersection of the two selected lines and continue to the sheet edge.
Acessed by selecting Construct > Bisector Line from the main menu. The User will be prompted to identify two bisected lines. The Bisector Line form will be displayed. The User can modify the Length of the line, the X and Y values of the through point.
A Bisector may also be trimmed by using the Edit > Line Trim option.
11.5.11 Local Symbols
Acessed by selecting Construct > Local Symbol from the main menu.
The User will be prompted to Select the 2D primitives for the local symbol. The Point Construction Option form will be displayed. The User will be prompted to identify the origin for the local symbol.
The Create SYTM form will then be displayed. Click on OK and the Local Symbols form is displayed.