WLD 157 Introduction to Layout and Fabrication

Lecture Hours: 1
Lab Hours: 4
Credits: 3

Studies layout tools and procedures used to fabricate welded metal products. Includes alignment, joint fitting, and tack welding procedures and methods.

Prerequisite: WLD 156 with a grade of C or better; or consent of program chair.
Student Learning Outcomes:

Use basic blueprint reading skills to transfer information from prints to material
Demonstrate the use of basic layout tools such as square, compass, tape measure, and protractor to transfer information from blueprint to material
Understand the math required for calculating material lists for shop projects
Demonstrate basic skills required to calculate angles and radius on material
Demonstrate ability to identify various structural shapes used in industry
Demonstrate weld joint alignment, fitting, and tack welding methods and procedures

Content Outline

Introduction and Discussion of Blueprint Views, Symbols, and Measurement
- Pictorial drawing
- Orthographic views
- Hidden lines and broken lines
- Sectional views
- Methods of drawing lines parallel
- Working from center lines and layout tangents
Needs and Techniques of Making Stretch-outs
- Stretch-outs of circular projects
- Stretch-outs of semicircular projects
- Layout of cylindrically shaped projects
- Stretch-outs of square projects
- Stretch-outs of rectangular projects
- Measurement
  - Angular measure
  - Protraction
  - Swing blade protractor
Line Development
- Parallel lines
- Dividing lines, angles, and circles
  - Diving a line by measurement
  - Bisecting an angle
  - Dividing a circle into equal spaces
Design and Layout of Welded Joints
- Weld design
- Welded pipe fittings
- Preparation for welding
- Angle of intersection