The (C-60) Welding Exam, Sample Questions and Source Documents


CSLB exam centers are located in:

  • Fresno
  • Norwalk
  • Oakland
  • Oxnard
  • Sacramento
  • San Bernardino
  • San Diego
  • San Jose.

Exams are given Monday through Friday, excluding holidays.

You will be required to present picture the test center. (Drivers License, California I.D., Military I.D or Passport)

Each exam is a closed book four choice (A, B, C, or D) multiple-choice test. There is no writing required. Each exam is taken on a computer however no computer experiance is required.

The Law exam consists of 115 questions and The Trade exams range between 100 and 120 questions each. If you are taking both the trade and the law exams they will be administered to you back to back on the same day. You are allowed approximately 2.5 hours for each exam, but typically the State gives you ample time to complete the tests. You need approximately 70% correct answers to pass. You can retake the exam multiple times if you are unsuccessful.

Exam Content - The (C-60) Welding Exam has six major sections, these are.

1. Planning and Estimating (22% of Exam)

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

2. Welding Preparation (17% of Exam)

  • Material preparation
  • Job preparation

3. Welding Processes (25% of Exam)

  • Processes
  • Techniques
  • Post-welding Procedures

4. Brazing and Soldering Procedures (5% of Exam)

5. Cutting Processes (7% of Exam)

6. Safety (24% of Exam)

  • Job site safety
  • Personnel safety

*Percentages are approximate*

Exam Sample Questions  - The following questions are typical of the types of items that are on the examination.

2. Approximately how much heat is released at the electrode for DCSP welding?

a. 3/4
b. 2/3
c. 1/3 
d. 1/4

1. If a welder is welding at 300 amps and the combined length of the electrode and work leads is 150 feet, what is the recommended size of the lead or cable?

a. 1
b. 1/0
c. 2
d. 2/0

3. Alternating current would most likely be used in GTAW to weld which of the following metals?

a. Low carbon steel
b. Deoxidized copper
c. Stainless steel
d. Aluminum

*All questions are written and reviewed by licensed contractors*

Exam References – The following publications were utilized in the creation of the (C-60) trade exam. Additional sources for purchasing materials may be available online.

Cal/OSHA State of California Construction Safety Orders. California Code of Regulations, Title 8, Industrial Relations, Division 1, Chapter 4, Subchapter 4. BNI Publications, Inc.
PHONE: (888) 264-2665.

Cal/OSHA State of California General Industry Safety Orders with Selected Electrical Safety Orders. California Code of Regulations, Title 8, Industrial Relations, Division 1, Chapter 4, Subchapter 7. Mangan Communications.
PHONE: (888) 626-2666

AWS D1.1 Structural Welding Code –Steel. American Welding Society.
PHONE: (305) 826-6193

Modern Welding. The Goodheart-Wilcox Co., Inc.
PHONE: (800) 323-0440

The Managers’ Guide for Welding. Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA).
PHONE: (703) 803-2980

*Publisher information is current as of 8/09*

Test Strategy - The contractor exam is a four choice multiple-choice test. You will have four choices per question. Some questions may require mathematical computation. All exam questions are written to provide only one BEST answer and are NOT written as trick questions.

All correct answers have the same point value. It is better to try to answer a question with the chance to possibly get it correct (and earn points) than it is to leave that question blank and definitely get it wrong (and lose points).

Ample time is provided to answer all exam questions, so be sure to read all questions and answers completely and carefully before selecting the BEST possible answer to the question.