Graph paper is provided at the end of this review for your use
27 октября, 2014 
Oleg Maloletnikov |
1. Explain the significance of the following symbols: a. 0 ____________________________________ b. [_____________________________ ] c. |
7.
Show the variations for dual dimensioning by means of the bracket method. Use 5.750" and its millimeter equivalent (146.05) to illustrate these variations. Include dimension lines in showing the variations.
8. Fill in the missing dimensions on the following table. Round answers to two decimal places for millimeter conversions and to three decimal places for inch conversion.
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Table of Inch/Millimeter Equivalents |
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inch |
3 16 |
.375 |
1 2 |
1.250 |
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mm |
7.94 |
11.11 |
15.88 |
2.75 |
2. On dual-dimensioned drawings, is it standard practice to apply dual dimensions to (answer “yes” or “no”):
a. Welding symbols?
b. Thread sizes?________
c. Pipe sizes?__________
d. Diameters?__________
e. Hole sizes?__________
f. Cylinders?___________
g. Location dimensions?
3. Describe an alternative to dual dimensioning, other than by the positioning or bracket method.
4. Give an advantage of dual-dimensioned drawings.
5. Give a disadvantage of a dual-dimensioned drawing.
6. Show the variations for dual dimensioning by means of the positioning method. Use 6" and its millimeter equivalent (152.40 mm) to illustrate these variations.
9. Explain the significance of the following note: mm
mm/inch;
10. Add the missing dimensions (in millimeters) to the following dual-dimensioning symbols.
11. Show how the following dimensions would be expressed on a dual-dimensioned drawing by means of the positioning method. Use slash lines with U. S. Customary dimensions shown to the left of the slash line, where
it is appropriate to do so. Use millimeter equivalent or decimal fraction values where it is appropriate to do so.
a. 60 - 15'________________
b. 12.72"_________________
c. 1%" pipe_______________
d. 254.23 mm_____________
e. %_____________________
f. 34" - 12 UNC-2A
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UNIT 24: REVIEW B |
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Refer to the drawing, Portable Test Tank, page 293. |
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1. What information is listed regarding the type of dished heads required? |
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The total combined length of 2" X 2" X % angle required will be: inches |
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2. What is the type, size, and approximate length of weld (g? |
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The total combined length of 11/2" X 11/2" X % angle required will be: inches m |
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10. |
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type |
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inches |
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The dimension for radius is: inches The dimension for distance is: inches |
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11. |
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approx. length |
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inches |
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3. What type and size welds are used to join the two heads to the skin of the tank? |
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12. |
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type |
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With reference to the bolt circle, the chordal distance between any two of the 3/8" drilled holes is: inches m |
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13. 14. 15. |
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inches |
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4. The total length of 10" (10.750"0D) (273 mm OD) pipe required is: inches mm |
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The approximate total combined length of welds (g , (g, and (g is: inches _____ The overall length of the completed tank, including the flanged connection, will be: inches _____ |
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5. What type and size of weld is used to join the fittings at the top and bottom to the skin of the tank? |
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type |
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inch |
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What is the dimension for distance ® inches_ |
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6. The total combined length of /4 X 3 flat bar required for completion of the tank is: inches r |
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16. 17. |
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What is the dimension for distance ? inches ___ |
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7. If the flange that is welded to the 10" pipe were cut from a square plate, the minimum outside dimensions of this plate must be: |
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18. What views make up the drawing? |
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length width |
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_ inches. inches inch |
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19. What is the spacing of holes in the flange? |
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thickness |
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20. Convert 80" of weld to a mm equivalent. |
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8. The dimensions of the sheet used to form the skin of the tank are: |
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length width |
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_ inches _ inches ___ inch |
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mm 21. Convert 450 mm of weld to an inch equivalent. |
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thickness |
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UNIT 24: REVIEW C
Refer to the drawing, Pipe Hanger, page 295
1. What is the name of the part?
17. a. What type and size of weld is used to join plate ^ to plate ®
2. What is the order number?
b. Give size of weld in mm.
3. How many are required?
4. How much extra length is allowed for bending the part?
inch
5. What are the tolerances on angular dimensions?
6. What is the maximum possible overall length? inches mm
7. What is the minimum possible overall length? inches mm
8. Point © is represented by line in the
top view.
9. Line is represented by line in the top
view.
10. Surface N is represented by line in the
front view.
11. Line M is represented by line in the
auxiliary view.
12. Line represents surface in the top view.
13. What is the dimension of distance ®
inches mm
14. What is the dimension of distance ^ ?
inches mm
15. What is the dimension of distance © inches ____
16. a. What type and size of weld is used to join plate ^ to plate ^ ?
b. Give size of weld in inches.
18. a. What type and size of weld is required at
corner
b. Give size of weld in inches and mm.
inches mm
19. Where are the welds that join plates ® and a to the plate ® to be made?
20. a. How many mm of fillet welds will be required
for completion of the order?
b. How many inches?
21. a. Explain why it was desirable to include an auxiliary view on this drawing.
b. At what angle is it drawn?
22. How many angular dimensions are shown?
23. Make a complete bill of materials required for completion of the order. NOTE: Allow enough material for the cutting of all irregular-shaped plates. List the dimensions in inches and in mm.
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Bill of Materials
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24. Apply dual dimensioning to the following welding symbol.
3
8 N
l
EDITOR’S NOTE: REDUCED PRINT, FOLLOW STATED DIMENSIONS ONLY. NOT TO BE SCALED.
A LARGER DRAWING IS PROVIDED AT THE BACK OF THE TEXT.
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UNIT 24: REVIEW D |
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Refer to the drawing, Engine Mount Rear, page 297 1. What is the name of the part? |
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17. How many 0 .375 drilled holes will there be in the completed order? |
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2. How many are required to complete the order? |
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18. How many 0 .500 drilled holes will there be in the completed order? |
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3. What is the order number? |
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19. a. At what angle will the ends of the pipe be cut where it joins the I beam? |
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4. What scale is used for the drawing? 5. What is the dimension of distance ® inches mm 6. What is the dimension of distance ^^? |
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b. What is the size of this pipe? |
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20. What type and size is weld © ? ® ?____________________________________ |
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7. What is the dimension of distance © |
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21. How many welding symbols are shown? |
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8. What is the dimension of distance ® inches 9. What is the dimension of distance © |
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22. How many fillet welding symbols are shown? |
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23. How many 3/8" fillet welding symbols are shown? |
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10. What is the dimension of distance J |
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24. What types of welds are used to join the angle to the S beam? |
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11. What is the dimension of distance © inches ___ 12. What is the dimension of distance © |
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25. a. What information is given regarding welds that are not dimensioned? |
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13. What is the dimension of distance (B? inches ___ |
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b. Make a complete bill of materials that will be required for completion of the order (omit plates A, B, and C). Give dimensions in inches and millimeters. |
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14. What is the dimension of distance © |
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Bill of Materials
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26. Sketch the weld symbol that is dual dimensioned. |
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15. How many flame-cut holes will there be in the completed order? |
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16. Identify the member that will be inserted in the flame-cut hole. |
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