1. WELD JOINT GEOMETERY AND WELDING SYMBOLS

2. Terminology & Definitions
A Weld:
A union between materials caused by heat, and or pressure
A Joint:
A configuration of members

3. Joint Terminology
Edge
Open & Closed Corner
Lap
Tee
Butt
Cruciform

4. Welded Joint Terminology
Compound
Fillet
Butt
Spot
Edge
Plug

5. Butt Welds

6. Single sided Butt Preparations
Single sided preparations are normally made on thinner materials, or when access form both sides is restricted
Single
Single
Bevel
Vee
Single
Single J U

7. Double sided Butt Preparations
Double sided preparations are normally made on thicker materials, or when access form both sides is unrestricted
Bevel
Double
Vee
Double J
Double U
Double

8. Weld Zone Terms A B C D A, B, C & D = Weld Toes Weld zone Face
Weld metal
Fusion zone
Heat Affected Zone
Weld Junction
Root
A, B, C & D = Weld Toes

9. Butt Weld Features Weld cap width Excess Cap height
or Weld Reinforcement
Excess Root Penetration
Root bead width

10. Fillet Welds

11. Fillet Weld Leg Lengthsa b
a. = Vertical leg length
b. = Horizontal leg length

12. Fillet Weld Throat Thicknessb
a. = Design Throat Thickness
b. = Actual Throat Thickness

13. Deep Penetration Fillet Weld Featuresb
a. = Design Throat Thickness
b. = Depth of Penetration

14. Fillet Weld Dimensionsa
a = Design / Theoretical throat thickness s
s = Actual throat thickness b
b = Horizontal leg length c
c = Vertical leg length
e.g
Leg length = 6mm
Design Throat = 6mm x 0.7
Design Throat = 4.2mm
The leg length should be approximately equal to the material thickness
The design throat thickness is 0.7 of the leg length

15. Fillet Weld Profiles Mitre fillet Convex fillet
A concave profile is preferred for joints subjected to fatigue loading
Concave fillet

16. Welding Positions

17. Horizontal vertical: PC / 2G: Horizontal vertical: PB / 2F:
Welding Positions
Flat: PA / 1G:
Flat PA / 1F
Horizontal vertical: PC / 2G:
Horizontal vertical: PB / 2F:
Horizontal overhead
PD / 4F
Overhead
PE / 4G
Vertical downwards
PG / 3G
Vertical upwards
PF / 3G

18. Welding Positions PG / 5G PF / 5G PA / 1G 45o PC / 2G H-LO 45 / 6G
Weld: Flat
Pipe: rotated
Axis: Horizontal
PA / 1G
Weld: Vertical upwards
Pipe: Fixed
Axis: Horizontal
PF / 5G
PG / 5G
Weld: Vertical Downwards
Pipe: Fixed
Axis: Horizontal
45o
Weld: Horizontal vertical
Pipe: Fixed
Axis: Vertical
PC / 2G
H-LO 45 / 6G
Weld: Upwards
Pipe: Fixed
Axis: Inclined

19. IWE WELDING DESIGN PRE-COURSE
TYPE OF JOINTS

20. IWE WELDING DESIGN PRE-COURSE
TYPE OF JOINTS

21. IWE WELDING DESIGN PRE-COURSE
TYPE OF JOINTS

22. IWE WELDING DESIGN PRE-COURSE
TYPE OF JOINTS PREPRATION

23. IWE WELDING DESIGN PRE-COURSE
TYPE OF JOINTS PREPRATION

24. IWE WELDING DESIGN PRE-COURSE
TYPE OF JOINTS PREPRATION

25. IWE WELDING DESIGN PRE-COURSE
TYPE OF JOINTS PREPRATION

26. IWE WELDING DESIGN PRE-COURSE
TYPE OF JOINTS PREPRATION

27. IWE WELDING DESIGN PRE-COURSE
TYPE OF JOINTS PREPRATION

28. IWE WELDING DESIGN PRE-COURSE

29. IWE WELDING DESIGN PRE-COURSE

30. IWE WELDING DESIGN PRE-COURSE

31. IWE WELDING DESIGN PRE-COURSE
TYPES OF WELDS

32. IWE WELDING DESIGN PRE-COURSE
TYPE OF WELDS

33. IWE WELDING DESIGN PRE-COURSE

34. IWE WELDING DESIGN PRE-COURSE

35. IWE WELDING DESIGN PRE-COURSE

36. IWE WELDING DESIGN PRE-COURSE

37. IWE WELDING DESIGN PRE-COURSE
BUTT WELDS

38. BUTT WELDS IWE WELDING DESIGN PRE-COURSE FULL PENETRATION
PARTIAL PENETRATION

39. IWE WELDING DESIGN PRE-COURSE

40. IWE WELDING DESIGN PRE-COURSE
FULL PENETRATION

41. IWE WELDING DESIGN PRE-COURSE
PARTIAL PENETRATION

42. IWE WELDING DESIGN PRE-COURSE
FILLET WELDS

43. FILLET WELDS IWE WELDING DESIGN PRE-COURSE FULL PENETRATION
PARTIAL PENETRATION

44. IWE WELDING DESIGN PRE-COURSE

45. IWE WELDING DESIGN PRE-COURSE

46. IWE WELDING DESIGN PRE-COURSE

47. IWE WELDING DESIGN PRE-COURSE

48. IWE WELDING DESIGN PRE-COURSE

49. IWE WELDING DESIGN PRE-COURSE

50. IWE WELDING DESIGN PRE-COURSE

51. IWE WELDING DESIGN PRE-COURSE

52. IWE WELDING DESIGN PRE-COURSE
WELDING SYMBOLS

53. IWE WELDING DESIGN PRE-COURSE

54. IWE WELDING DESIGN PRE-COURSE

55. IWE WELDING DESIGN PRE-COURSE

56. IWE WELDING DESIGN PRE-COURSE

57. IWE WELDING DESIGN PRE-COURSE

58. IWE WELDING DESIGN PRE-COURSE

59. IWE WELDING DESIGN PRE-COURSE

60. IWE WELDING DESIGN PRE-COURSE

61. IWE WELDING DESIGN PRE-COURSE

62. IWE WELDING DESIGN PRE-COURSE

63. IWE WELDING DESIGN PRE-COURSE

64. IWE WELDING DESIGN PRE-COURSE

65. IWE WELDING DESIGN PRE-COURSE

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67. IWE WELDING DESIGN PRE-COURSE

68. IWE WELDING DESIGN PRE-COURSE

69. IWE WELDING DESIGN PRE-COURSE

70. IWE WELDING DESIGN PRE-COURSE

71. GEOMETRICAL CHARACHTRESTICS REVIEW EXCERSICES
IWE WELDING DESIGN PRE-COURSE
GEOMETRICAL CHARACHTRESTICS
REVIEW EXCERSICES

72. Any Questions ?