Drawings and Weld Symbols
Reading the drawings and welding symbols that welders build from, followed through an apprentice's first fit-up job at a fabrication shop in Nisku, near Edmonton: drawing packages and revision control, views, sections and details, dimensions, tolerances and general notes, joint types and groove preparation, the AWS A2.4 welding symbol used on CSA W59 work, fillet, groove, plug, stud and surfacing symbols, supplementary, contour and examination symbols, CWB-accepted procedures and data sheets, and a capstone taking a skid base frame from drawings to an inspected fit-up.
WLD-220 12 lessons · 3 h 23 min ▶ Video lessons coming soon
Offered by HSM University · Welding
This is the Canadian version of this course. See the American version.
What you'll learn
- Describe how design drawings, shop drawings, assembly and single-part drawings, bills of materials, weld maps and erection drawings fit together, and work only from controlled copies of the current revision
- Read orthographic views, section views, details and reference marks on weld drawings, identify the projection system, locate members from work points, and explain why drawings are not scaled
- Interpret dimensions, units, tolerances and general notes, and calculate worst-case and root-sum-of-squares tolerance stack-ups
- Identify the five basic joint types, the parts of a groove and the common groove shapes, explain CJP and PJP welds, backing and back gouging, and use prequalified joint details
- Explain the elements of the welding symbol and the arrow side and other side rule, read broken arrows, tails, field weld and weld-all-around symbols, and recognize ISO 2553 differences
- Read fillet weld symbols for size, length, pitch and unequal legs, calculate throat, weld metal and intermittent weld layouts, and distinguish chain from staggered welds
- Read groove weld symbols for depth of bevel, groove weld size, root opening and groove angle, recognize how CJP is shown, and calculate effective throats
- Read plug, slot, spot, seam, stud, surfacing and edge weld symbols, and estimate the weld metal and filler they require
- Apply supplementary, contour and finish symbols, including the 2020 flat and flush rules, and read multiple reference lines and combined symbols
- Read examination symbols, identify where inspection requirements are specified, keep weld maps and logs, and work correctly with hold points
- Read welding procedure specifications and data sheets, identify essential variables, check actual values and heat input against procedure ranges, and confirm welder qualification
- Take a welded assembly from a drawing package to an inspected fit-up, checking pieces, symbols, tolerances and joint dimensions and recording the results
Course content
12 lessons · 3 h 23 min total · final exam
- 1 Drawings in a fabrication shop 19 min · quiz
- 2 Views, sections and details on weld drawings 17 min · quiz
- 3 Dimensions, tolerances and general notes 17 min · quiz
- 4 Joint types and edge preparation 16 min · quiz
- 5 The welding symbol: reference line, arrow and tail 17 min · quiz
- 6 Fillet weld symbols 17 min · quiz
- 7 Groove weld symbols 16 min · quiz
- 8 Plug, slot, spot, seam, stud and surfacing symbols 17 min · quiz
- 9 Supplementary symbols, contours and finishes 17 min · quiz
- 10 NDE symbols and inspection information 17 min · quiz
- 11 Welding procedure specifications and how to read them 16 min · quiz
- 12 Capstone: from drawing to fit-up on a skid base frame 17 min · quiz
- E Final exam 20 questions
Requirements
Recommended background. You can start any course at any time.
Description
Reading the drawings and welding symbols that welders build from, followed through an apprentice's first fit-up job at a fabrication shop in Nisku, near Edmonton: drawing packages and revision control, views, sections and details, dimensions, tolerances and general notes, joint types and groove preparation, the AWS A2.4 welding symbol used on CSA W59 work, fillet, groove, plug, stud and surfacing symbols, supplementary, contour and examination symbols, CWB-accepted procedures and data sheets, and a capstone taking a skid base frame from drawings to an inspected fit-up.