Layout 120203b

Question 1

1. Provide the correct terms for the following abbreviations and/or symbols.
   a) BC
   b) BCD
   c) BDC
   d) C to C

Answer 1

a) BC - bolt centre or bolt circle
b) BCD - bolt circle diameter
c) BDC - bottom dead centre
d) C to C - centre to centre

Question 2

1. Provide the correct terms for the following abbreviations
   e)

Answer 2

e) centreline

Question 3

1. Provide the correct terms for the following abbreviations and/or symbols.
   f) C/W
   g) D, Dia, or ø
   h) DEG or °
   i) FT or ‘
   j) ID

Answer 3

f) C/W - complete with or comes with
g) D, Dia, or o - diameter
h) DEG or° - degree or degrees
i) FT or ‘ - foot or feet
j) ID - inside diameter

Question 4

1. Provide the correct terms for the following abbreviations and/or symbols.
   k) IN or “
   l) LG
   m) LH

Answer 4

k) IN or” - inch or inches
l) LG - long
m) LH - left hand

Question 5

1. Provide the correct terms for the following abbreviations and/or symbols.
   n) O/C
   o) O/O
   p) OD

Answer 5

n) O/C - on centre
0) 0/0 - outside to outside
P) OD - outside diameter

Question 6

1. Provide the correct terms for the following abbreviations and/or symbols.

Answer 6

Question 7

1. Provide the correct terms for the following abbreviations and/or symbols.
   r) R
   s) REQ or REQD

Answer 7

г) R - radius
s) REQ OR REQD - required

Question 8

1. Provide the correct terms for the following abbreviations and/or symbols.
   t) RH
   u) TDC
   v) TYP

Answer 8

t) RH - right hand
u) TDC - top dead centre
v) TYP - typical

Question 9

2. List two (2) common uses for dividers.
   a)
   b)

Answer 9

a) scribe smaller circles and arcs
b) to accurately transfer repeated measurements.

Question 10

3. List 2 uses for trammels
   a)
   b)

Answer 10

a) scribe larger diameter circles and arcs
b) check for square (corner to corner)

Question 11

4. What layout tool is specially designed for developing cut lines at any given angle on pipe and structural shapes?
   a) a wraparound
   b) a contour marker
   c) an angle square
   d) a beam board

Answer 11

b) a contour marker

Question 12

5. The divisions marked on a protractor head measure:
   a) degrees.
   b) angles.
   c) sectors.
   d) sections.

Answer 12

a) degrees.

Question 13

6. The most accurate method of placing repeated measurements on a piece of steel plate is to use a:
   a) set of dividers.
   b) micrometer.
   c) steel rule.
   d) centre finder.

Answer 13

a) set of dividers.

Question 14

7. List two (2) markers that are preferred for accuracy when marking steel.
   a)
   b)

Answer 14

a) scribers
b) sharp soapstone

Question 15

8. Explain the preferred layout procedure when a high degree of accuracy is required.

Answer 15

Polish the surface of the material, apply layout dye and use a scriber and dividers for all layout work.

Question 16

9. A coloured grease pencil or paint is used in layout work to:
   a) provide a contrasting colour for layout lines.
   b) make the layout lines permanent.
   c) protect the material.
   d) highlight the layout marks.

Answer 16

d) highlight the layout marks.

Question 17

10. Permanent layout marks are made using:
    a) soapstone
    b) a centre punch.
    c) a scriber.
    d) paint.

Answer 17

b) a centre punch.

Question 18

11. Centre punch marks on a cut line are used to:
    a) check the accuracy of the layout.
    b) provide for better cutting efficiency.
    c) make the cut line stand out when working in dark shop
    d) act as a guide for improved cutting accuracy.

Answer 18

d) act as a guide for improved cutting accuracy.

Question 19

12. List three (3) advantages of using templates.
    a)
    b)
    c)

Answer 19

a) better efficiency
b) accuracy
c) better use of material and can be a labour saver

Question 20

13. List the three (3) general template categories.
    a)
    b)
    c)

Answer 20

a) layout templates
b) checking templates
c) guiding templates

Question 21

14. List two (2) materials considered suitable for temporary templates.
    a)
    b)

Answer 21

a) heavy paper
b) cardboard

Question 22

15. List three (3) materials that may be used for permanent templates.
    a)
    b)
    c)

Answer 22

a) metal
b) wood
c) plastic

Question 23

16. Templates marked with quadrant lines are most likely used when working with:
    a) plate
    b) structural steel.
    c) pipe
    d) circles.

Answer 23

c) pipe

Question 24

17. Define the term nominal pipe size.

Answer 24

Nominal pipe size describes piping by name only.
Nominal pipe size is NOT equal to outside diameter for pipe 12” and smaller,
but is equal to the OD for pipe 14” and larger.

Question 25

18. What factor determines the nominal pipe size for: a) 12" and smaller pipe? b) 14" and larger pipe?

Answer 25

a) the inside diameter of standard pipe b) the outside diameter

Question 26

19. What significant factor remains the same for any size pipe?

Answer 26

the outside diameter

Question 27

20. Explain the difference between schedule 40 pipe and standard wall pipe.

Answer 27

Each size of schedule 40 pipe has a different wall thickness whereas standard pipe 10" and over has a wall thickness of ⅜".

Question 28

21. When dealing with pipe, what does the term schedule number mean? a) the percentage of carbon in the pipe b) the maximum recommended service temperature for the pipe c) the length of pipe with reference to its wall thickness d) the strength of pipe with reference to its wall thickness

Answer 28

d) the strength of pipe with reference to its wall thickness

Question 29

22. In the metric system, what unit of measure is used for pipe wall thickness? a) schedule numbers in multiples of 10 b) millimetres c) centimetres d) kilojoules

Answer 29

b) millimetres

Question 30

23. Write the applicable sizes for the following. a) OD of a 4" schedule 80 pipe b) OD of a 24" standard wall pipe c) wall thickness of a 2" schedule 160 pipe d) wall thickness of a 6" schedule 80 pipe

Answer 30

a) 4.5" b) 24" c) 0.344" d) 0.432"

Question 31

24. Briefly explain how a straight line may be drawn along the length of a pipe.

Answer 31

Use a straight length of L shape or C shape set on the pipe to act as a straight edge.

Question 32

25. Two tools that are handy for custom layout of mitre lines on pipe are a ___________ ___________ and a ___________.

Answer 32

Two tools that are handy for custom layout of mitre lines on pipe are a contour marker and a wraparound