Presentation is loading. Please wait.

Presentation is loading. Please wait.

1 Blueprint Reading for the Machine Trades, Sixth Edition Unit 16: Weldments Russ Schultz and Larry Smith PowerPoint presentation created by LaVonne Vichlach.

Similar presentations


Presentation on theme: "1 Blueprint Reading for the Machine Trades, Sixth Edition Unit 16: Weldments Russ Schultz and Larry Smith PowerPoint presentation created by LaVonne Vichlach."— Presentation transcript:

1 1 Blueprint Reading for the Machine Trades, Sixth Edition Unit 16: Weldments Russ Schultz and Larry Smith PowerPoint presentation created by LaVonne Vichlach

2 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 2 Weldments Created from individual pieces of metal that have been welded together Almost all metals can be welded-some are easier to work with Low-carbon can be welded easier than high- carbon Thin and very thick material require special considerations Weld drawings have weld symbols

3 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 3 Types of Joints

4 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 4 Types of Welds Four basic types of gas and arc welds Fillet Groove-named for shape-V(both pieces are beveled), J or U (both pieces J-grooved) Plug or slot-used when fastening one piece on top of another-eliminate fasteners Back or backing weld-surface of joints when of groove is used

5 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 5 Types of Welds

6 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 6 Welding Symbols Graphical symbols have been established for use on weldments Symbols are part of ANSI?AWS A sponsored by American Welding Society

7 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 7 Reference Line Reference line forms body of welding symbol All other elements are placed in designated positions with respect to this line Arrow is affixed to one end and a tail, when required, is affixed to the other end

8 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 8 Reference Line

9 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 9 Arrow Connects the reference line to one side of the weld joint Side touched by arrowhead becomes known as the arrow side Opposite side is the other side of the joint Bevel and J-groove symbols may include double bend in arrow Arrow is pointing to the member that is to receive the groove

10 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 10 Basic Weld Symbols Symbols designate the type of weld to be performed Position on the reference line is approximate center-above or below or on both sides of the line

11 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 11 Basic Weld Symbols Symbols below the line designate the weld to be on the arrow side of the joint Symbols above the line designate the other side of the joint Symbols on both sides of line indicates weld on both sides of the joint

12 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 12 Basic Weld Symbols

13 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 13 Standard Location of Elements

14 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 14 Supplementary Symbols Convey additional information relative to the extent of the welding Where the welding is performed and the contour of the weld “Weld all around” and “field weld” symbols appear at the end of the reference line-at junction of arrow

15 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 15 Supplementary Symbols Melt–thru symbol is used where 100% joint or member penetration plus reinforcement is required Contour symbol is placed above or below the weld symbol Finish symbol is placed above or below the contour symbol

16 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 16 Supplementary Symbols C = chipping G = grinding M = machining R = rolling H = hammering

17 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 17 Supplementary Symbols

18 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 18 Dimension Size of weld appears to the left of the basic weld symbol Length of weld appears to the right of the symbol Length followed by dash designates the center-to-center spacing of intermittent welds Angles of grooves and included angles of countersinks for plug weld appears above or below symbol

19 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 19 Tail Appears on the end of the reference line, opposite the arrow end-whenever a specification, process, or other reference is made in welding symbol Tail is omitted when no specification, process or references are needed Specified welding processes will appear in tail of welding symbol as letters Standard letter designations in chart form

20 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 20

21 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 21

22 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 22

23 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 23

24 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 24 Welding Symbol Quiz 1 List the weld name, joint side, and other supplementary information for the symbol to the right. 1. Fillet weld, arrow side

25 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 25 Welding Symbol Quiz 1 List the weld name, joint side, and other supplementary information for the symbol to the right. Square groove weld, both sides of the joint 2.

26 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 26 Welding Symbol Quiz 1 List the weld name, joint side, and other supplementary information for the symbol to the right. Bevel groove weld, opposite side and melt through 3.3.

27 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 27 Welding Symbol Quiz 1 List the weld name, joint side, and other supplementary information for the symbol to the right. V-groove weld, both sides & machine flush contour 4.4.

28 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 28 Welding Symbol Quiz 1 List the weld name, joint side, and other supplementary information for the symbol to the right..50 fillet weld, arrow side, field weld 5.5.

29 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 29 Welding Symbol Quiz 1 List the weld name, joint side, and other supplementary information for the symbol to the right. Fillet weld, all around joint, torch brazing 6.6.

30 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 30 Welding Symbol Quiz 1 List the weld name, joint side, and other supplementary information for the symbol to the right. Plug or slot weld, arrow side, 1” Dia, 30° Angle, 4” pitch 7.7.

31 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 31 Welding Symbol Quiz 1 List the weld name, joint side, and other supplementary information for the symbol to the right. Bevel groove & fillet weld, arrow side, fillet weld opposite side, 2” LG, 5” Pitch 8.8.

32 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 32 Welding Symbol Quiz 1 List the weld name, joint side, and other supplementary information for the symbol to the right. U-groove & fillet weld, arrow side w/convex contour & back or backing weld opposite side 9.9.

33 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 33 Welding Symbol Quiz 1 List the weld name, joint side, and other supplementary information for the symbol to the right. J-groove weld opposite side (groove is in right or bottom PC) & back or backing weld arrow side w/flush contour 10.

34 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 34 For the letter “A.” Fillet weld both sides. Draw the symbol for the letter identified below. Welding Symbol Exercise

35 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 35 For the letter “B.” Fillet weld all around. Draw the symbol for the letter identified below. Welding Symbol Exercise

36 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 36 For the letter “C.” V-groove weld arrow side, grind flush. Fillet weld opposite side. Draw the symbol for the letter identified below. Welding Symbol Exercise

37 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 37 For the letter “D.” J- groove weld both sides, then fillet weld both sides Draw the symbol for the letter identified below. Welding Symbol Exercise

38 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 38 Resistance Welds Spot Projection Seam Flash Upset welds

39 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 39 Spot Welding Used for fusing two or more sheets of metal together Applying pressure by means of electrodes Pass high current at low voltage through sheets from one electrode to another

40 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 40 Projection Welding Projections are embossed into one of the pieces Larger electrodes are used that accommodate several welds simultaneously

41 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 41 Seam Welding An adaptation of spot welding Uses continuously rotating rollers for electrodes Rollers create a series of overlapping spots as electrodes are automatically turned on and off as they revolve

42 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 42 Flash or Upset Welding Used to join the ends of bars, rods, strips, tubing, etc. Clamp tow pieces together in fixtures facing each other Bring ends together and hold them together them under pressure until fusion takes place

43 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 43 Resistance Welding Symbols Spot, seam, flash, and upset weld symbols do not normally have arrow-side or other-side significance-so they are centered on reference line Projection weld abbreviated RPW Designate either arrow-side to indicate which piece receives the projection Standard letter designation for process is included in the tail

44 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 44 Resistance Welding

45 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 45 Welding Symbol Quiz 2 1. Resistance projection weld (opposite side receives projection)

46 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 46 Welding Symbol Quiz 2 2. Flash weld

47 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 47 Welding Symbol Quiz 2 3. Resistance seam weld,.25 size

48 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 48 Welding Symbol Quiz 2 4. Resistance spot weld, 700 LB. strength

49 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 49 Welding Symbol Quiz 2 5. Resistance projection weld, arrow side, 500 LB. Strength, 2.00 pitch, Qty 3

50 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 50 Welding Symbol Quiz 2 6. Resistance spot weld,.50 size, 6.00 pitch

51 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 51 Welding Symbol Quiz 2 7. Resistance seam weld, 1000 LB. Strength, 5” Lg., 10” pitch

52 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 52 Welding Symbol Quiz 2 8. Upset weld, grind convex contour, both sides

53 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 53 Welding Symbol Quiz 2 9. Resistance spot weld,.25 size, 3” pitch, Qty 4

54 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 54 Welding Symbol Quiz Resistance projection weld, opposite side, 3/8 size, 4” pitch, Qty 6

55 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 55 Welding Symbol Quiz 3 1. Weld all around

56 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 56 Welding Symbol Quiz 3 2.Field weld

57 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 57 Welding Symbol Quiz 3 3.Back or backing weld

58 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 58 Welding Symbol Quiz 3 4.Melt-thru

59 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 59 Welding Symbol Quiz 3 5.Weld other side only

60 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 60 Welding Symbol Quiz 3 6.V-groove weld

61 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 61 Welding Symbol Quiz 3 7.J-groove weld

62 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 62 Welding Symbol Quiz 3 8.Bevel groove weld

63 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 63 Welding Symbol Quiz 3 9.Plug or slot weld

64 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 64 Welding Symbol Quiz 3 10.Resistance spot weld

65 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 65 Welding Symbol Quiz 3 11.Surfacing

66 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 66 Welding Symbol Quiz 3 12.Flare-V weld

67 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 67 Welding Symbol Quiz 3 13.Upset weld

68 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 68 Welding Symbol Quiz 3 14.Flush contour

69 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 69 Welding Symbol Quiz 3 15.Resistance seam weld

70 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 70 Welding Symbol Quiz 3 16.Flare-bevel weld

71 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 71 Welding Symbol Quiz 3 17.Concave contour

72 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 72 Welding Symbol Quiz 3 18.Root opening

73 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 73 Welding Symbol Quiz 3 19.Square groove weld

74 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 74 Welding Symbol Quiz 3 20.Edge-flange weld

75 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved Describe the complete specifications from the welding symbol located at “A.” Bevel groove weld.25 DP, then fillet weld.25 x.50, all around joint FLG TUBE WELDMENT

76 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 76 Bevel groove weld, flush contour, both sides of joint 2.Describe the complete specifications from the welding symbol located at “B.” FLG TUBE WELDMENT

77 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 77 J-groove weld, then fillet weld, both sides of joint 3.Describe the complete specifications from the welding symbol located at “C.” FLG TUBE WELDMENT

78 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 78 J-groove weld, arrow side, machine flush. Back or backing weld opposite side. (Groove is in.750 x 1.75 PC 4.Describe the complete specifications from the welding symbol located at “D.” FLG TUBE WELDMENT

79 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved. 79 Field weld,.50 fillet, concave contour, all around joint 5.Describe the complete specifications from the welding symbol located at “E.” FLG TUBE WELDMENT

80 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved What is the MMC of diameter F ? 3.02 FLG TUBE WELDMENT

81 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved What is the MMC of diameter G ? 2.48 FLG TUBE WELDMENT

82 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved What is the MMC of diameter H ? FLG TUBE WELDMENT

83 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved What is the maximum overall height dimension I ? FLG TUBE WELDMENT

84 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved What is the maximum overall width dimension J ? 6.53 FLG TUBE WELDMENT

85 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved How many individual pieces are required to make one complete weldment? 5 FLG TUBE WELDMENT

86 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved What size is the locational tolerance zone if the three reamed holes measure exactly.500?.022 FLG TUBE WELDMENT

87 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved What size is the locational tolerance zone if the three counterbored holes measure exactly.375?.016 FLG TUBE WELDMENT

88 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved What is the geometric tolerance on datum A if the base thickness measures exactly.748?.002 FLG TUBE WELDMENT

89 Schultz and Smith: Blueprint Reading for the Machine Trades, 6 th edition © 2008 Pearson Education, Upper Saddle River, NJ All Rights Reserved Calculate the minimum possible material between the side of a reamed hole and the flange OD. (Consider the geometric tolerance.).479 FLG TUBE WELDMENT


Download ppt "1 Blueprint Reading for the Machine Trades, Sixth Edition Unit 16: Weldments Russ Schultz and Larry Smith PowerPoint presentation created by LaVonne Vichlach."

Similar presentations


Ads by Google