[STUDY GUIDE] • HIGH-YIELD PRACTICE & REVIEW EDITION
Pipefitter STAR Exam Questions & Answers
2026/2027 | Latest Verified Exam Edition
Comprehensive Examination Question Bank • Concept Mapping
TOTAL QUESTIONS EXAM TOPICS RATIONALES
798 Questions 11 Modules 100% Verified
DOCUMENT OVERVIEW
This document contains 798 verified questions with correct answers focused on pipefitting and plumbing
technology. Each question is designed to assist in preparation for certification exams and offers a
comprehensive review of essential concepts and safety practices in the field. It is suitable for students and
professionals seeking to enhance their knowledge and skills in pipefitting.
EXAM BLUEPRINT & TOPIC DISTRIBUTION
Systematic breakdown of subject domains and exam coverage.
Topic Module Scope & Core Focus
Understanding the function and importance of ground fault circuit interrupters in electrical
Ground Fault Circuit Interruption safety.
Familiarity with the information contained in Material Safety Data Sheets for safe handling of
Material Safety Data Sheets (MSDS) materials.
Using fitting tables to determine appropriate sizes and types of fittings for various
Fitting Tables and Measurements applications.
Knowledge of local bargaining agreements and their implications for labor practices in the
Local Bargaining Agreements trades.
Techniques and calculations related to the installation and maintenance of parallel pipe
Parallel Pipe Lines systems.
Understanding the operation and troubleshooting of hydraulic and pneumatic systems in
Hydraulic and Pneumatic Systems pipefitting.
Water Pressure and Flow Calculations Calculating water pressure and flow rates for efficient system design and operation.
Knowledge of various welding techniques used in pipefitting and the associated safety
Welding Techniques and Safety protocols.
Confidential • Student Study Edition • Practice & Review Guide Page 1 of 141
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
Refrigeration and HVAC Principles Fundamental principles of refrigeration and HVAC systems relevant to pipefitting.
Engineering Principles in Pipefitting Application of basic engineering principles to solve pipefitting problems.
Plumbing Codes and Standards Familiarity with plumbing codes and standards that govern the pipefitting profession.
Total Exam Coverage 11 Integrated Topic Modules • 798 Examination Questions
Confidential • Student Study Edition • Practice & Review Guide Page 2 of 141
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
QUESTION 1
What causes 90% of all construction injuries and deaths and are used to help OSHA
inspectors improve their effectiveness?
Answer: Focus Hazards.
QUESTION 2
What is the minimum safe working distance for overhead power lines?
Answer: 10 Feet.
QUESTION 3
Which of the following is not true about Material Safety Data Sheets?
Answer: They can be written in any language.
QUESTION 4
Never expose any part of a compressed gas cylinder to temperatures above:
Answer: 125 °F.
QUESTION 5
Add: 5 1/8 + 1 1/4 + 4 ½ =
Answer: 10 7/8.
QUESTION 6
Inhalation, ingestion, absorption and injection are four routes of entry.
Answer: T.
Confidential • Student Study Edition • Practice & Review Guide Page 3 of 141
, STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
QUESTION 7
The welder is at most serious and immediate risk of
Answer: Electrocution.
QUESTION 8
The first two digits on welding rod indicate?
Answer: Tensile strength.
QUESTION 9
A metal which has a high iron content is known as a _______ metal.
Answer: Ferrous.
QUESTION 10
UNIFORM LENGTHS OF STEEL PIPE ARE WHAT LENGTH (±1")
Answer: 21'.
QUESTION 11
WHAT IS THE PRESSURE 1/4 THE WAY UP FROM THE BOTTOM OF A PIPE 100' TALL
FILLED WITH WATER
Answer: 32.47.
QUESTION 12
A machine has a primary pulley of 6 in. and a secondary pulley of 24 in. What is the
gear ratio?
Answer: 4 To 1.
Confidential • Student Study Edition • Practice & Review Guide Page 4 of 141
Pipefitter STAR Exam Questions & Answers
2026/2027 | Latest Verified Exam Edition
Comprehensive Examination Question Bank • Concept Mapping
TOTAL QUESTIONS EXAM TOPICS RATIONALES
798 Questions 11 Modules 100% Verified
DOCUMENT OVERVIEW
This document contains 798 verified questions with correct answers focused on pipefitting and plumbing
technology. Each question is designed to assist in preparation for certification exams and offers a
comprehensive review of essential concepts and safety practices in the field. It is suitable for students and
professionals seeking to enhance their knowledge and skills in pipefitting.
EXAM BLUEPRINT & TOPIC DISTRIBUTION
Systematic breakdown of subject domains and exam coverage.
Topic Module Scope & Core Focus
Understanding the function and importance of ground fault circuit interrupters in electrical
Ground Fault Circuit Interruption safety.
Familiarity with the information contained in Material Safety Data Sheets for safe handling of
Material Safety Data Sheets (MSDS) materials.
Using fitting tables to determine appropriate sizes and types of fittings for various
Fitting Tables and Measurements applications.
Knowledge of local bargaining agreements and their implications for labor practices in the
Local Bargaining Agreements trades.
Techniques and calculations related to the installation and maintenance of parallel pipe
Parallel Pipe Lines systems.
Understanding the operation and troubleshooting of hydraulic and pneumatic systems in
Hydraulic and Pneumatic Systems pipefitting.
Water Pressure and Flow Calculations Calculating water pressure and flow rates for efficient system design and operation.
Knowledge of various welding techniques used in pipefitting and the associated safety
Welding Techniques and Safety protocols.
Confidential • Student Study Edition • Practice & Review Guide Page 1 of 141
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
Refrigeration and HVAC Principles Fundamental principles of refrigeration and HVAC systems relevant to pipefitting.
Engineering Principles in Pipefitting Application of basic engineering principles to solve pipefitting problems.
Plumbing Codes and Standards Familiarity with plumbing codes and standards that govern the pipefitting profession.
Total Exam Coverage 11 Integrated Topic Modules • 798 Examination Questions
Confidential • Student Study Edition • Practice & Review Guide Page 2 of 141
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
QUESTION 1
What causes 90% of all construction injuries and deaths and are used to help OSHA
inspectors improve their effectiveness?
Answer: Focus Hazards.
QUESTION 2
What is the minimum safe working distance for overhead power lines?
Answer: 10 Feet.
QUESTION 3
Which of the following is not true about Material Safety Data Sheets?
Answer: They can be written in any language.
QUESTION 4
Never expose any part of a compressed gas cylinder to temperatures above:
Answer: 125 °F.
QUESTION 5
Add: 5 1/8 + 1 1/4 + 4 ½ =
Answer: 10 7/8.
QUESTION 6
Inhalation, ingestion, absorption and injection are four routes of entry.
Answer: T.
Confidential • Student Study Edition • Practice & Review Guide Page 3 of 141
, STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
QUESTION 7
The welder is at most serious and immediate risk of
Answer: Electrocution.
QUESTION 8
The first two digits on welding rod indicate?
Answer: Tensile strength.
QUESTION 9
A metal which has a high iron content is known as a _______ metal.
Answer: Ferrous.
QUESTION 10
UNIFORM LENGTHS OF STEEL PIPE ARE WHAT LENGTH (±1")
Answer: 21'.
QUESTION 11
WHAT IS THE PRESSURE 1/4 THE WAY UP FROM THE BOTTOM OF A PIPE 100' TALL
FILLED WITH WATER
Answer: 32.47.
QUESTION 12
A machine has a primary pulley of 6 in. and a secondary pulley of 24 in. What is the
gear ratio?
Answer: 4 To 1.
Confidential • Student Study Edition • Practice & Review Guide Page 4 of 141
