C60 – Welding Contractor

A welding contractor causes metals to become permanently attached, joined and fabricated by the use of gases and electrical energy, which creates temperatures of sufficient heat to perform this work.

The Welding (C-60) Examination is divided into six major sections. These sections are:

1. Job Evaluations and Estimating (10%)

• Plans, Specifications, and Drawings
• Equipment, Materials, and Supplies
• Job Task Scheduling

2. Shop Equipment and Materials (20%)

• Shop Equipment
• Shop Materials, Consumables, and Reports
• Shop Housekeeping and Safety

3. Fabrication (19%)

• Shop Layouts
• Shop Cutting
• Grinding, Forming, and Tack Welding

4. Welding Processes (12%)

• Brazing
• Gas Welding
• Arc Welding

5. Field Work (29%)

• Field Layouts and Installations
• Field Welding and Weld Symbols
• Field Equipment and Transporting
• Field Housekeeping and Safety

6. Repair Processes (10%)

• Repair Evaluations
• Repair Processes

*Percentages are approximate*

The following questions are typical of the types of items that are on the examination. The correct answer is highlighted.

1. Which of the following statements about brazing are FALSE?

a.      When brazing a lap joint, the two surfaces should not be tightly clamped together to assure proper alignment.

b.       The brazing process occurs below 2000 degrees Fahrenheit.

c.       A brazed joint is stronger than a soldered joint.

d.       Brazing filler metal is usually nonferrous.

2. When using DCRP arc welding, about 2/3 of the heat is released at the electrode. Approximately how much heat is released at the electrode for DCSP?

a.       3/4

b.       2/3

c.       1/3

d.       1/4

3. How should a worker be welding a lap joint in a flat position on plate steel?

a.      Use a weaving motion so more heat is distributed to the bottom piece of metal.

b.       Use a weaving motion so more heat is distributed to the top piece of metal.

c.       Both pieces being welded should receive an equal amount of heat.

d.       The piece having its edge welded should receive the most heat.

*All questions are written and reviewed by licensed contractors who are actively working in the field*

Cal/OSHA Construction Safety Orders.

California Code of Regulations, Title 8,
Industrial Relations, Division 1, Chapter 4, Subchapter 4.
Barclays Law Publishers,
P.O. Box 95767,
Chicago, IL 60694.
(800) 888-3600
FAX: (415) 732-8861.
INTERNET: ccr.oal.ca.gov

AWS D1.1 Structural Welding Code – Steel.

American Welding Society.
550 N.W. LeJeune Road,
Miami, FL 33126.
(800) 443-9353 or (305) 443-9353.
INTERNET: www.aws.org

Modern Welding.

The Goodheart-Wilcox Co., Inc.,
123 W. Taft Dr.,
South Holland, IL 60473.
(708) 333-7200
FAX: (888) 409-3900.
INTERNET: www.goodheart-willcox.com

The Welder’s Handbook.

Reston Publishing Co., Inc.
(a Prentice-Hall Co.)
Reston, VA 22090.
(703) 821-5050
FAX: (703) 917-0991.
INTERNET: www.prenticehall.com

The Manager's Guide for Welding.

SMACNA,
4201 Lafayette Center Dr.,
Chantilly, VA 22021-1209.
(703) 803-2980
FAX: (703) 803-3732.
INTERNET: www.smacna.org