Part of Lesson Plan: Reading the Welding Symbol

Activity Overview / Details

Use these supplemental slides as you see fit.  Depending on your students and how in depth you wish to take them these next few slides will help.   I use them to show the progression from the simple weld symbol to the more complex welds that  may be required as the students progress through the welding program

Slide 7 - Weld all the way around  (pipe to plate, or pipe to pipe)

Slide 8 - In the field welding (Galvanized pipe)

Slide 9 - Sides of the reference line ( it is important to teach the students about this.  When holding the blueprint all the information is read from the bottom up.  So all the information written on the bottom side of the reference line refers to exactly where the arrow is pointing.  Since they would read the top of the line second then all the information regarding that weld is to be placed OPPOSITE of where the arrow is pointing.  IT IS VERY IMPORTANT THAT YOU YOURSELF UNDERSTAND THIS CONCEPT BEFORE YOU TEACH IT TO STUDETNS.

Slide 10, 11, and 12 show the students what a fillet weld looks like on the arrow side, other side, and size requirements.

Slide 13  shows difference in slot welds or fillet welds.

Slide 14-15.  Lastly I show these slides to inform the students about intermittent welds.  Slide 14 shows a series of fillet welds that  need to be made along the length of weldment.  I show the students the size of the weld, the length of the welds, and how far the spacing is.  slide 15 illustrates this same concept but because the symbols are staggered, the welds are staggered as well.