Block References and Attributes

Transcription

1 CHAPTER 11 Block References and Attributes PROJECT EXERCISE 11A This project exercise provides point-by-point instructions for creating the objects shown in Figure P11A 1. In this exercise, you will apply the skills acquired in Chapters 1 through 11. FIGURE P11A 1 Completed project drawing In this project, you will learn to do the following: Set up the drawing, including Limits, and Layers. Use the LINE, PLINE, CIRCLE, ARC, and SOLID commands to create objects. Use the BLOCK command to save objects for later insertion. 11-1

2 11-2 Use the ATTDEF command to create an attribute and include it in the block definition. This enables you to attach a text string to the block reference when it is inserted. Use the INSERT command to insert the block references created earlier. SET UP THE DRAWING AND DRAW A BORDER Step 1: Step 2: Step 3: Start the AutoCAD program. To create a new drawing, invoke the NEW command from the Quick Access Toolbar. AutoCAD displays the Select Template dialog box. Select acad.dwt as the template file and choose Open. AutoCAD creates a new drawing. Invoke the LIMITS command, and set the limits to the lower left and upper right coordinates as shown in the Settings/Value table. Set the grid and snap values also as shown. Settings Value UNITS Decimal LIMITS Lower left corner: 0,0 Upper right corner: 18,12 GRID 0.5 SNAP 0.25 LAYERS NAME COLOR LINETYPE Blocks Red Continuous Border Cyan Continuous Equipment Green Continuous Instrument Magenta Continuous Pipeline Blue Continuous Text White Continuous Step 4: Step 5: Step 6: Invoke the LAYER command from the Layers panel. AutoCAD displays the Layer Properties Manager dialog box. Create six layers, rename them as shown in the table, and assign the appropriate color and linetype. Set the Border as the current layer and set the Ortho, Grid, and Snap options all to ON. Invoke the ZOOM ALL command to display the entire limits on screen. Invoke the RECTANGLE command from the Draw panel to draw the border ( ), as shown in Figure P11A 2. Specify the first corner point or.5,.75 Specify the other corner point

3 Chapter 11 Block References and Attributes 11-3 FIGURE P11A 2 Border for piping flowsheet Step 7: Step 8: Set Blocks as the current layer. Invoke the ZOOM command and use the Window option to zoom in on a small area of the display, as shown in Figure P11A 3. Specify the corner of window, enter a scale factor (nx or nxp), or window Specify the first corner: 3,3 Specify the opposite corner: #6,6 FIGURE P11A 3 Zoom in on a portion of the display Step 9: Step 10: Open the Drafting Settings dialog box, and set the grid to and the snap to , and set the grid and snap to ON. Draw the gate valve as shown in Figure P11A 4.

4 11-4 FIGURE P11A 4 The gate valve Step 11: Invoke the BLOCK command from the Block panel (see Figure P11A 5) located in the Home tab. FIGURE P11A 5 Invoking the BLOCK command from the Draw panel AutoCAD displays the Block Definition dialog box shown in Figure P11A 6. FIGURE P11A 6 Block Definition dialog box Enter GATE in the Block name: text box. Select Pick Point. AutoCAD prompts: Specify the insertion base point: (specify the insertion point as shown in Figure P11A 4)

5 Chapter 11 Block References and Attributes 11-5 Once you specify the insertion point, AutoCAD redisplays the Block Definition dialog box. Choose Select Objects. AutoCAD prompts: Select the objects: (select all the objects that comprise the gate valve) Step 12: Once you select the objects, AutoCAD redisplays the Block Definition dialog box. Choose Delete in the Objects section of the dialog box. The rest of the settings should be similar to Figure P11A 6. Choose OK to create the block called GATE and close the Block Definition dialog box. Draw the remaining symbols required for the piping flow sheet on the appropriate layers, as shown in Figure P11A 7. FIGURE P11A 7 Required blocks for the piping flowsheet drawing Create individual blocks for all the symbols by providing appropriate insertion points and block names (as shown in uppercase letters in Figure P11A 7). If necessary, refer to step 11 for the step-by-step procedure to create a block.

6 11-6 Before you create a block for the instrument bubble, define an attribute. Invoke the ATTDEF command from the Block panel located in the Home tab. AutoCAD displays the Attribute Definition dialog box. Set appropriate attributes and the required prompts, as shown in Figure P11A 8. Choose Pick Point to place the attribute in the center of the instrument bubble, as shown in Figure P11A 7. Once you have defined the attribute, create the block for the instrument bubble. Make sure to include the attribute tag as part of the block when selecting objects. FIGURE P11A 8 Attribute Definition dialog box Step 13: Step 14: Step 15: Step 16: Invoke the ZOOM ALL command to display the entire drawing. Open the Drafting Settings dialog box and set the Grid to 0.25, the Snap to 0.125, and set the Grid and Snap to ON. Set Equipment as the current layer. Draw the vertical and horizontal vessels and the boxes for the exchangers, as shown in Figure P11A 9. The following are the prompt sequences to draw the vessels and boxes for the exchangers.

7 Chapter 11 Block References and Attributes 11-7 FIGURE P11A 9 Equipment layout Invoke the RECTANGLE command from the Draw panel. AutoCAD prompts: Specify the first corner point or 5.25,3.75 Specify the other corner point 1,5.5 Invoke the ARC command 3-point method from the Draw panel. AutoCAD prompts: Specify the starting point of the arc or 4.25,3.75 Specify the second point of the arc or #4.75,3.625 Specify the end point of the arc: #5.25,3.75 Invoke the ARC command 3-point method again. AutoCAD prompts: Specify the starting point of the arc or 5.25,9.25 Specify the second point of the arc or #4.75,9.375 Specify the end point of the arc: #4.25,9.25 Invoke the RECTANGLE command from the Draw panel. AutoCAD prompts: Specify the first corner point or ,6.5 Specify the other corner point Invoke the ARC command 3-point method from the Draw panel. AutoCAD prompts: Specify the starting point of the arc or ,7 Specify the second point of the arc or #10.25,6.75 Specify the end point of the arc: #10.375,6.5 Invoke the ARC command 3-point method again. AutoCAD prompts: Specify the starting point of the arc or ,6.5 Specify the second point of the arc or #13.25,6.75 Specify the end point of the arc: #13.125,7

8 11-8 To draw the boxes for the exchangers: Invoke the RECTANGLE command from the Draw panel. AutoCAD prompts: Specify the first corner point or 9.25,7.875 Specify the other corner point Invoke the RECTANGLE command again. AutoCAD prompts: Specify the first corner point or 1,4.375 Specify the other corner point Step 17: Insert the exchangers and pump as shown in Figure P11A 10 by invoking the INSERT BLOCK command from the Block panel (see Figure P11A 11) located in the Home tab. FIGURE P11A 10 Layout with exchangers and pump FIGURE P11A 11 Invoking the INSERT BLOCK command from the Draw panel

9 Chapter 11 Block References and Attributes 11-9 AutoCAD displays the Insert dialog box shown in Figure P11A 12. FIGURE P11A 12 Insert dialog box Step 18: Select EXCH block name from the Name: list box. Set the Specify On-screen check box to OFF in the Insertion point section of the dialog box. In the Insertion Point section of the dialog box, enter 2.75 in the X: text box and 4.75 in the Y: text box. In the Scale section of the dialog box, enter 1.00 in the X: text box and 1.00 in the Y: text box. In the Rotation section of the dialog box, enter 0 in the Angle: text box. Choose OK to insert the block reference and close the dialog box. Similarly, insert the EXCH block reference again at the insertion point 11,8.25, with scale set to 1.00 and rotation to 0 degrees. Insert the PUMP block reference at the insertion point 12.25,3.625, with scale set to 1.00 and rotation set to 0 degrees. Insert the NOZ block reference at the appropriate locations, as shown in Figure P11A 13. Draw a horizontal line (representing a tray) in the vessel just below the highest side, and then copy it three times, as shown in Figure P11A 13. FIGURE P11A 13 Layout with nozzles

10 11-10 Step 19: Step 20: Set Pipeline as the current layer. Lay out the pipelines as shown in Figure P11A 14 by invoking the LINE command. FIGURE P11A 14 Layout with pipelines Step 21: Insert the flowsheet symbols at the appropriate places by invoking the INSERT command, as shown in Figure P11A 15. Make sure to provide appropriate attribute values while inserting the instrument bubble block reference. After inserting the block references, use the BREAK command to break out the pipeline passing through the valve symbols. FIGURE P11A 15 Layout with flowsheet symbols Step 22: Step 23: Set Instruments as the current layer. Invoke the PLINE command to draw LINE 1, LINE 2, and LINE 3 instrument air lines as shown in Figure P11A 16.

11 Chapter 11 Block References and Attributes FIGURE P11A 16 Layout with instrument air lines Step 24: Invoke the DIVIDE command to insert the block reference tic on the instrument air lines as shown in Figure P11A 17. AutoCAD prompts: Select the object to divide: (select LINE 1) Enter the number of segments or (choose BLOCK from the shortcut menu) Enter the name of the block to insert: tic Align the block with the object? [Yes/No] <Y>: (choose NO from the shortcut menu) Enter the number of segments: 5 Invoke the DIVIDE command. AutoCAD prompts: Select the object to divide: (select LINE 2) Enter the number of segments or (choose BLOCK from the shortcut menu) Enter the name of the block to insert: tic Align the block with the object? [Yes/No] <Y>: (choose NO from the shortcut menu) Enter the number of segments: 7 Invoke the DIVIDE command. AutoCAD prompts: Select the object to divide: (select LINE 3) Enter the number of segments or (choose BLOCK from the shortcut menu) Enter the name of the block to insert: tic Align the block with the object? [Yes/No] <Y>: (choose NO from the shortcut menu) Enter the number of segments: 8

12 11-12 FIGURE P11A 17 Layout with tic marks on the instrument air lines Step 25: Step 26: Set Text as the current layer. Invoke the TEXT command to add the text, as shown in Figure P11A 18. The larger text height is set to 0.18 and the smaller text height is set to FIGURE P11A 18 Layout with text Step 27: Save the drawing as ch11-proj and exit the AutoCAD program. Congratulations! You have just successfully applied several AutoCAD concepts in creating a simple schematic drawing.

13 Chapter 11 Block References and Attributes PROJECT EXERCISE P11B This project exercise provides point-by-point instructions for creating one dynamic block to represent several symbols for flanges with differing dimensions, as shown in the single-line depiction on the right of Figure P11B 1. In this exercise, you will apply the skills learned regarding creating dynamic blocks, acquired in Chapter 11. FIGURE P11B 1 Pictorial and Single-line drawings of piping arrangement Figure P11B 2 shows the differing dimensions of raised-face weld-neck flanges in two flange ratings (150 and 300 ) for two different pipe sizes (3 00). The four block references can be obtained from a single dynamic block that has been created with varying dimensional parameters driven by a Lookup Table with the different pipesize/flange-rating combinations. 00 and 4 FIGURE P11B 2 One block representing four combinations of dimensions In this project, you will learn to do the following: Start the Block Editor and draw the objects for making a dynamic block. Add parameter sets to the dynamic block. Add a Lookup Table for controlling the dimensions of the block reference after it is inserted.

14 11-14 Step 1: Step 2: Step 3: Start the AutoCAD program. To create a new drawing, invoke the NEW command from the Quick Access toolbar. AutoCAD displays the Select Template dialog box. Select acad.dwt as the template file and choose Open. AutoCAD creates a new drawing. Invoke the LIMITS command, and set the limits to the lower left and upper right coordinates as shown in the Settings/Value table. Settings Value UNITS Architectural LIMITS Lower left corner: -6,-6 Upper right corner: 12,6 LAYERS NAME COLOR LINETYPE Flange Red Continuous Pipeline Blue Continuous Step 4: Step 5: Step 6: Invoke the LAYER command from the Layers panel. AutoCAD displays the Layer Properties Manager dialog box. Create two layers, rename them as shown in the table, and assign the appropriate color and linetype. Set Flange as the current layer. Invoke the ZOOM ALL command to display the entire limits on screen. Invoke the BLOCK command from the Block panel. AutoCAD displays the Block Definition dialog box. Enter the name RFWN-FLG in the Name text box (see Figure P11B 3) and check the Open in block editor check box. After choosing OK, AutoCAD displays the warning No Objects have been selected for the block. What do you want to do. with two options to choose: Select Objects and Continue. Choose Continue and AutoCAD opens the Block Editor (see Figure P11B 4). FIGURE P11B 3 Block Definition dialog box

15 Chapter 11 Block References and Attributes FIGURE P11B 4 Block Editor Step 7: Step 8: Invoke the RECTANGLE command from the Draw panel to draw the Flange (without the weld-neck hub), as shown in Figure P11B 5. AutoCAD prompts: Specify the first corner point or 0, 3.75 Specify the other corner point 9375,7.50 Invoke the PLINE command from the Draw panel to draw the hub (the weldneck), as shown in Figure P11B 5. AutoCAD prompts: Specify the starting point:.9375, Specify the next point or Specify the next point or , Specify the next point or [Arc/Close/Halfwidth/Length/Undo/Width]: (ENTER)

16 11-16 FIGURE P11B 5 Rectangle and Polyline objects that comprise the Geometry for the Flange NOTE The dimensions of the geometry are arbitrarily drawn to comply with those of the flange; flange O.D. ¼ , length ¼ , and thickness ¼ They could just as well be drawn to comply with the dimensions of one of the other three pipe-size/flange-rating combinations, or even rounded off to dimensions that aren t on any of them. Once the action/parameters have been created and the block has been inserted, these action/parameters can be used to change the values to comply with the proper dimensions. Also, for this exercise, the thickness will be ignored (it is for appearances only and does not affect the overall piping makeup dimensions) as will the dimension for the base of the hub where it attaches to the flange. Step 9: From the Parameter Sets tab of the Block Authoring Palettes window, invoke the LINEAR STRETCH parameter set. AutoCAD prompts: Specify the starting point or (select Label from the shortcut menu) Enter distance property label <Distance>: LENGTH (ENTER) Specify the starting point or (select midpoint of the face of the flange, as shown in Figure P11B 6) Specify the endpoint: (select the endpoint of the weld-neck) Specify the label location: (specify the label location, as shown in Figure P11B 7)

17 Chapter 11 Block References and Attributes FIGURE P11B 6 Selecting the points for Linear Stretch parameter set FIGURE P11B 7 Placement of the label for the linear stretch Step 10: At this time, there is no geometry associated with the Stretch parameter as the alert (exclamation point in the yellow square) warns. Double-click on the exclamation point to assign the Stretch action. AutoCAD prompts: Specify the first corner of stretch frame or (specify the first corner of stretch frame as shown in Figure P11B 8) Specify the opposite corner: (specify the opposite corner) Select the objects: (select the polyline that depicts the weld-neck) Select the objects: (press (ENTER) to complete the selection)

18 11-18 FIGURE P11B 8 The gate valve Step 11: This completes the assigning of the stretch action. Similarly assign two additional Linear Stretch parameter/actions from the midpoint of the flange face of the flange to the upper and lower corners of the face (see Figure P11B 8). Name the Linear Stretch parameter set for the top one as Half Flg Dia 1 and bottom one as Half Flg Dia 2. On each end, use the crossing selection to select the rectangle representing the flange and the polyline representing the weld-neck to be the geometry associated with the actions. Be sure to select only the appropriate end and not the whole rectangle representing the flange. FIGURE P11B 9 Adding the flange half diameters Step 12: Select Lookup Parameter from the Parameters tab. AutoCAD prompts: Specify the parameter location or (choose a point near the geometry to place the lookup parameter)

19 Double-click the exclamation mark of the Lookup parameter. AutoCAD invokes the Lookup Action and prompts: Specify the action location: (choose a point to place the lookup action) AutoCAD displays the Property Lookup Table (see Figure P11B 10). Chapter 11 Block References and Attributes FIGURE P11B 10 Property Lookup Table Step 13: Choose Add Properties and AutoCAD displays the Add Parameter Properties dialog box. Select Linear in the Parameter Name listing as Add input properties type (see Figure P11B 11) and choose OK. AutoCAD returns you to the Property Lookup Table dialog box where you can enter the values for the properties under the LENGTH column. FIGURE P11B 11 Add Parameter Properties dialog box

20 11-20 Step 14: Under the LENGTH column, specify the values for the flange lengths for each pipe-size/flange-rating combination. Under the Lookup column in the Lookup Properties section, enter each pipe-size/flange-rating (see Figure P11B 12). Below the Lookup column, change the read-only selection to Allow reverse lookup. Choose Audit, and if there are no duplications or errors, AutoCAD will display the No errors found alert. Choose OK to return to the Property Lookup Table dialog box. FIGURE P11B 12 Property Lookup Table with Length Input Properties Step 15: Repeat steps 13 and 14 for the Half Flg Dia 1 and Half Flg Dia 2 parameters, adding the values for the half diameters of the flanges (see Figure P11B 13). After adding all the values, choose OK to close the Property Lookup Table dialog box. NOTE Whenever you make additions to the data, the text box under Custom changes back to read only. So be sure to repeat the following part of step 14: Below the Lookup column, change the read-only selection to Allow reverse lookup.

21 Chapter 11 Block References and Attributes FIGURE P11B 13 Property Lookup Table with Half Flg Dia 1 and Half Flg Dia 2 Input Properties Step 16: Step 17: Close the Block Editor. AutoCAD displays an alert stating Changes to parameters may update existing block references in ways that are not always obvious. N block reference(s) exist(s) in the drawing. Save block definition and update block references? Choose Yes to finally exit the Block Editor and return to the drawing screen. Insert the newly created dynamic block and then select the lookup grip. AutoCAD displays the Lookup Table shortcut menu (see Figure P11B 14) from which you can choose the pipe-size/flange-rating combination. The dimensions will automatically change to comply with the selection. FIGURE P11B 14 menu Selecting the pipe-size/flange-rating combination from the Lookup Table shortcut Step 18: Using the newly created dynamic block, create the Single-line drawing of the Piping Arrangement, as shown in Figure P11B 1. Save the drawing with the name RFWN-FLG.

22 11-22 EXERCISE 11 1 Create a kitchen cabinet layout, as shown in Figure Ex11 1, according to the settings given in the following table. Create all the required blocks by referring to the architectural symbols in Figure Ex11 2b. Settings Value 1. Units Architectural 2. Limits Lower left corner: 0,0 Upper right corner: 20 0, Layers NAME COLOR LINETYPE Border Red Continuous Counter Green Hidden Sink Blue Hidden Cabinets Yellow Continuous Notes White Continuous Dimensions Yellow Continuous Doorswings White Phantom Notes White Continuous 0 FIGURE EX11 1 Kitchen cabinet layout

23 Chapter 11 Block References and Attributes EXERCISE 11 2 Create the partial ground floor plan drawing shown in Figure Ex11 2a according to the settings given in the following table. Create all the required blocks by referring to the architectural symbols in Figure Ex11 2b. Settings Value 1. Units Architectural 2. Limits Lower left corner: 0 0,0 Upper right corner: 100 0, Layers NAME COLOR LINETYPE Border White Continuous Centerline Blue Center Columns Green Continuous Walls Yellow Continuous Door White Continuous Furniture Red Continuous Notes White Continuous Dimensions White Continuous 0 0 FIGURE EX11 2a Partial ground floor plan

24 11-24 FIGURE EX11 2b Architectural symbols

25 Chapter 11 Block References and Attributes EXERCISE 11 3 Create the elevator lobby drawing shown in Figure Ex11 3 according to the settings given in the following table. Make blocks of all items except the shaft walls and shear walls. Create all the required blocks by referring to the architectural symbols in Figure Ex11 2b. Settings Value 1. Units Architectural 2. Limits Lower left corner: 0,0 Upper right corner: 50 0, Layers NAME COLOR LINETYPE Border White Continuous Shear wall Blue Continuous Elevators White Continuous Partition Blue Continuous Frames Green Continuous Notes Green Hidden Beams Yellow Continuous Centerline White Phantom Dimensions White Continuous 0 FIGURE EX11 3 Low rise elevator lobby

26 11-26 EXERCISE 11 4 Create a layout of a building drawing shown in Figure Ex11 4 according to the settings given in the following table. Create all the required blocks by referring to the architectural symbols in Figure Ex11 2b. Settings Value 1. Units Architectural 2. Limits Lower left corner: 0,0 Upper right corner: 83 0, Layers NAME COLOR LINETYPE Border Red Continuous Holes Green Continuous Center Blue Phantom Ext wall Blue Continuous Ext door White Continuous Partition Yellow Continuous Int doors White Continuous Notes White Continuous 0 HINT For the exterior wall and interior partitions sizes (see the tables below). Use the MULTI- LINE command to create the wall and partitions. Exterior Wall Dimensions Brick Insulation Air Space Concrete Masonry Unit Total Wall Thickness 35/ /8 14 ¼ Interior Wall Dimensions Metal Stud Width Gypsum Board Thickness Total Wall Thickness 35/8 5/8 47/

27 Chapter 11 Block References and Attributes FIGURE EX11 4 Layout of a building

28 11-28 EXERCISE 11 5 Create the drawing shown in Figure Ex11 5a according to the settings given in the following table. Create all the required blocks by referring to the electrical symbols in Figure Ex11 5b. (Set the grid to and the snap to to draw the symbols.) Settings Value 1. Units Decimal 2. Limits Lower left corner: 0,0 Upper right corner: 12,9 3. Grid Snap Layers NAME COLOR LINETYPE Blocks Red Continuous Border Cyan Continuous Lines Magenta Continuous Text White Continuous Construction Red Continuous HINT Note that the insertion points are located on the symbol where they join the objects to which they are connected. Draw the circuits with continuous lines on the Construction layer. Insert the block references by using the Osnap mode Nearest. Then set the Construction layer to OFF and draw the lines between the symbols, connecting to their endpoints. FIGURE EX11 5a Electrical schematic

29 Chapter 11 Block References and Attributes FIGURE EX11 5b Electrical symbols

30 11-30 EXERCISE 11 6 Create the drawing shown in Figure Ex11 6 according to the settings given in the following table. Create all the blocks used in this drawing (define attributes where necessary). Create all required blocks by referring to the electrical symbols in Figure Ex11 5b. (Set the grid to and the snap to to draw the symbols.) Settings Value 1. Units Decimal 2. Limits Lower left corner: 0,0 Upper right corner: 12,9 3. Grid Snap Layers NAME COLOR LINETYPE Blocks Red Continuous Border Cyan Continuous Lines Magenta Continuous Text White Continuous Construction Red Continuous HINT Note that the insertion points are located on the symbol where they join the objects to which they are connected. Draw the circuits with continuous lines on the Construction layer. Insert the block references by using the Osnap mode Nearest. Then set the Construction layer to OFF and draw the lines between the symbols, connecting to their endpoints. FIGURE EX11 6 Electrical schematic

31 Chapter 11 Block References and Attributes EXERCISE 11 7 Create the conductor for alternating current diagram as shown in Figure Ex11 7 according to the settings given in the following table: Settings Value 1. Units Decimal 2. Limits Lower left corner: 0,0 Upper right corner: 20,12 3. Layers NAME COLOR LINETYPE Border White Continuous Transformer Green Center Switches Blue Continuous Wirebundle White Continuous Notes White Continuous Wires White Continuous FIGURE EX11 7 Conductor for alternating current

32 11-32 EXERCISE 11 8 Create a ground-fault protection diagram as shown in Figure Ex11 8 according to the settings given in the following table: Settings Value 1. Units Decimal 2. Limits Lower left corner: 0,0 Upper right corner: 17,11 3. Layers NAME COLOR LINETYPE Border White Continuous Relays Green Continuous Tripcoil Blue Continuous Switches White Continuous Sensor White Continuous Notes White Continuous WiresA White Continuous WiresB White Hidden StoredMech White Continuous FIGURE EX11 8 Ground-fault protection diagram

33 Chapter 11 Block References and Attributes EXERCISE 11 9 Create the drawing shown in Figure Ex11 9 according to the settings given in the following table: Settings Value 1. Units Decimal 2. Limits Lower left corner: 0,0 Upper right corner: 17,11 3. Layers NAME COLOR LINETYPE Border White Continuous Breaker Green Center Receptacles Blue Continuous Wires White Continuous Notes White Hidden FIGURE EX11 9 Double pole breaker circuit

34 11-34 EXERCISE Create the drawing shown in Figure Ex11 10a according to the settings given in the following table. Create all the required blocks by referring to the piping flowsheet symbols in Figure Ex11 10b. (Set the grid to and the snap to to draw the blocks.) Settings Value 1. Units Decimal 2. Limits Lower left corner: 0,0 Upper right corner: 12,9 3. Grid Snap Layers NAME COLOR LINETYPE Blocks Red Continuous Border Cyan Continuous Equipment Green Continuous Lines Magenta Continuous Text White Continuous HINT Note that the insertion points are located on the symbol where they join the objects to which they are connected. In order to attach a nozzle to the curved top of the reactor, one of its legs will have to overlap. Then the block reference will have to be exploded before part of it can be trimmed. FIGURE EX11 10a

35 Chapter 11 Block References and Attributes FIGURE EX11 10b Piping flowsheet symbols

36 11-36 EXERCISE Create the piping drawing with the pump, valves, and strainer and reducing flange as shown in Figure Ex11 11b, according to the settings given in the following table. Create all the required blocks by referring to the piping flowsheet symbols in Figure Ex11 11a. Settings Value 1. Units Architectural 2. Limits Lower left corner: 0,0 Upper right corner: 50 0, Layers NAME COLOR LINETYPE Border White Continuous Column Yellow Continuous Beam Blue Continuous Joist White Continuous Centerline White Center Slab White Continuous ConcPad White Continuous Pump Green Continuous Pipes Blue Continuous Gatevalve Red Continuous ReducingFlange Green Continuous Strainer Red Continuous Dimensions White Continuous Notes White Continuous 0 FIGURE EX11 11a Piping symbols

37 Chapter 11 Block References and Attributes FIGURE EX11 11b Piping drawing with the pump, valves, and strainer and reducing flange

38 11-38 EXERCISE Create the piping drawing with the tank, valves, and reducing flange shown in Figure Ex11 12 according to the settings given in the following table. Create all the required blocks by referring to the piping flowsheet symbols in Figure Ex11 11a. Settings Value 1. Units Architectural 2. Limits Lower left corner: 0,0 Upper right corner: 55 0, Layers NAME COLOR LINETYPE Border White Continuous Column Yellow Continuous Beam Blue Continuous Joist White Continuous Centerline White Center Slab White Continuous ConcPad White Continuous Tank Green Continuous Pipes Blue Continuous Gatevalve Red Continuous Checkvalve Red Continuous ReducingFlange Green Continuous Dimensions White Continuous Notes White Continuous 0

39 Chapter 11 Block References and Attributes FIGURE EX11 12 Piping drawing with the tank, valves, and reducing flange

40 11-40 EXERCISE Create the piping drawing with the vessel, valves, and strainer shown in Figure Ex11 13 according to the settings given in the following table. Create all the required blocks by referring to the piping flowsheet symbols in Figure Ex11 11a. Settings Value 1. Units Architectural 2. Limits Lower left corner: 0,0 Upper right corner: 50 0,40 3. Layers NAME COLOR LINETYPE Border White Continuous Column Yellow Continuous Beam Blue Continuous Joist White Continuous Centerline White Center Slab White Continuous ConcPad White Continuous Vessel Green Continuous Pipes Blue Continuous Gatevalve Red Continuous Checkvalve Red Continuous Pressurevalve Green Continuous Strainer Red Continuous Dimensions White Continuous Pipehanger White Continuous Notes White Continuous 0

41 Chapter 11 Block References and Attributes FIGURE EX11 13 Piping drawing (section and elevation) with the vessel, valves, and strainer

42 11-42 EXERCISE Create the piping drawing (plan view) with the pressure vessel, valves, and pipe support shown in Figure Ex11 14 according to the settings given in the following table. Create all the required blocks by referring to the piping flowsheet symbols in Figure Ex11 11a. Settings Value 1. Units Architectural 2. Limits Lower left corner: 0,0 Upper right corner: 55 0,40 3. Layers NAME COLOR LINETYPE Border White Continuous Column Yellow Continuous Centerline White Center ConcPad White Continuous Vessel Green Continuous Pipes Blue Continuous Gatevalve Red Continuous Dimensions White Continuous Notes White Continuous 0

43 Chapter 11 Block References and Attributes FIGURE EX11 14 Piping drawing (plan view) with the pressure vessel, valves, and pipe support