If you manage safety on construction sites, the Construction Health and Safety Technician (CHST)® credential from the Board of Certified Safety Professionals (BCSP) is one of the clearest ways to show you know the work. The exam is broad, covering everything from excavations and cranes to emergency plans and toolbox talks, so it can feel like a lot at first. The good news is that BCSP publishes exactly what it tests, and a study plan built on that blueprint gives you a solid shot at passing on your first try.

In this guide, we’ll walk you through the exam format, all four domains of the current blueprint and their weights, the official resources worth downloading, and the questions candidates ask most often.

What Is the BCSP CHST Exam?

The CHST is BCSP’s credential for people who carry safety, health, and environmental (SH&E) responsibilities on construction projects. According to BCSP’s CHST page, those duties may be all or part of your job, and you might work for an owner, general contractor, subcontractor, or a firm that provides SH&E services.

The exam checks whether you can spot hazards on a jobsite, choose sensible controls, respond when something goes wrong, keep a site safety program running, and communicate and train effectively. Expect practical, field-level questions: which protective system fits a trench, what belongs in an emergency action plan, or which training method works best for a crew.

What Is the BCSP CHST Exam Format?

Here is the exam at a glance, based on BCSP’s A Complete Guide to Safety Certification (Eleventh Edition, August 2025) and the BCSP Credentials At-A-Glance page:

  • Questions: 200 multiple-choice items, each with four answer options and one correct answer.
  • Time: 4 hours (240 minutes), or about 72 seconds per question.
  • Delivery: Computer-based at Pearson VUE test centers worldwide, scheduled year-round.
  • Calculator: An on-screen calculator that emulates the TI-30XS scientific calculator. You can’t bring your own.
  • Results: You receive your official result before you leave the testing center.
  • Passing score: BCSP does not publish a fixed passing percentage for the CHST in the guide or on the CHST page.

Subject matter experts write every question and support it with a published reference, according to BCSP’s CHST references list. That is a helpful reminder that the “right” answer is the one backed by recognized standards and texts, not a local jobsite habit.

What Content Outline Does the BCSP CHST Exam Use?

The current exam follows the CHST5 Examination Blueprint, effective April 12, 2022. It organizes the exam into four domains, each broken into knowledge statements (what you need to know) and skill statements (what you need to do).

Here is how the domains break down. The approximate question counts are our own estimates, calculated from BCSP’s percentages and the 200-item exam length.

  • Domain 1, Hazard and Risk Identification and Control: 36.6% (about 73 questions)
  • Domain 2, Emergency Preparedness, Incident Investigation, and Response: 19.9% (about 40 questions)
  • Domain 3, Safety Program Development, Implementation, and Sustainment: 22.5% (about 45 questions)
  • Domain 4, Leadership, Communication, and Training: 21% (about 42 questions)

Domain 1: Hazard and Risk Identification and Control (36.6%)

This is the largest domain by a wide margin, and it reads like a tour of a busy jobsite. The blueprint lists 31 knowledge statements covering specific construction hazards and five skill statements about controlling them.

  • Hazards and controls for hot work, electrical work, excavations, work at heights and fall protection, confined spaces, and struck-by exposures.
  • Mechanized equipment, hoisting and rigging, cranes, material handling and storage, housekeeping, powder-actuated tools, and hand and power tools.
  • Health hazards such as asbestos, lead and other heavy metals, noise, radiation, silica, chemicals, extreme climates, vibration, and biological hazards.
  • The Globally Harmonized System (GHS), safety through design, multi-trade worksites, ergonomics, PPE requirements, testing equipment, and concrete work.
  • Skills: apply the hierarchy of controls, develop job hazard analyses (JHAs), prioritize corrective actions, and select measuring instruments and protective equipment.

What questions look like: A scenario describes a task, such as workers cutting concrete block or entering a trench, and asks for the most effective control. Answers higher on the hierarchy of controls usually beat PPE-only options.

Domain 2: Emergency Preparedness, Incident Investigation, and Response (19.9%)

This domain covers what happens before, during, and right after an emergency. It pairs eight knowledge statements with seven skill statements focused on planning and coordination.

  • Fire protection, emergency action plan components, and emergency equipment.
  • Response to environmental contamination, such as spills.
  • Incident command systems and crisis management.
  • First aid and universal precautions.
  • Skills: prepare a site for emergencies, develop an emergency action plan, coordinate response and the resumption of operations, make required notifications, recognize when outside services are needed, and run response exercises.

Study tip: Know the roles in an incident command structure and the order of priorities in a response: life safety first, then incident stabilization, then property and the environment.

Domain 3: Safety Program Development, Implementation, and Sustainment (22.5%)

Domain 3 covers the systems that keep a site safe day after day, not just fixes for a single hazard. It includes nine knowledge statements and four skill statements.

  • Health and safety standards and how regulations affect the project.
  • Site-specific safety plans and worksite inspections.
  • Equipment use and manufacturer manuals.
  • Risk management, documentation, and recordkeeping.
  • Incident causation techniques and post-incident procedures.
  • Skills: identify which programs apply, apply standards, identify incident trends, and evaluate construction means and methods for safety impact.

What questions look like: You may be given a set of inspection findings or incident data and asked what the trend suggests or which program element needs attention first.

Domain 4: Leadership, Communication, and Training (21%)

The final domain covers the people side of construction safety. It has seven knowledge statements and seven skill statements.

  • Training delivery methods and what motivates human behavior.
  • Communication strategies, including when to consult outside experts.
  • Confidentiality, risk management strategies, and leadership strategies.
  • Skills: develop training requirements, manage documents, identify at-risk conditions and imminent danger, access information, address Total Worker Health, and complete risk reduction activities.

Study tip: Don’t treat this domain as “soft.” It carries about as much weight as Domain 3, and questions often hinge on choosing the most effective training or communication approach for a specific audience, such as a multilingual crew.

How Should You Use the CHST Blueprint to Build a Study Plan?

The blueprint is your master checklist. Turn each knowledge and skill statement into something you can explain or do without notes, and rate yourself strong, developing, or weak on each one.

  1. Take a mixed baseline. Answer a set of questions from all four domains before you start reviewing so you know where you actually stand.
  2. Weight your time. Domain 1 is more than a third of the exam, so it deserves more than a third of your time, especially the hazards you rarely see in your own work.
  3. Map every miss. Tie each missed question to a specific blueprint statement. Patterns like “cranes” or “incident command” tell you what to review.
  4. Protect the smaller domains. Domains 2 through 4 together are about 63% of the exam. A weak spot in emergency response or training can cost as much as a weak spot in fall protection.
  5. Revisit after a delay. Return to weak topics a few days later in mixed practice to confirm the knowledge stuck.

Which Official Resources Should You Use?

  • CHST5 Examination Blueprint: The official list of domains, weights, and knowledge and skill statements.
  • A Complete Guide to Safety Certification: BCSP’s candidate handbook, covering applications, exam rules, testing, and recertification.
  • CHST Exam References: The published texts BCSP uses to support exam questions.
  • examCORE: BCSP’s own self-paced prep course, described on the CHST page as including more than 1,000 practice questions with pre- and post-assessments.
  • OSHA construction standards: 29 CFR 1926 is the backbone of U.S. construction safety requirements.

Commonly used study references:

  • Safety Professional’s Reference and Study Guide, Fourth Edition (ISBN 978-1032836072)
  • Occupational Health and Safety Management: A Practical Approach, 3rd Edition (ISBN 978-1482231335)
  • Accident Prevention Manual for Business & Industry: Engineering & Technology, 14th Edition (ISBN 978-0879123222)
  • Accident Prevention Manual for Business and Industry: Administration & Programs, 14th Edition (ISBN 978-0879123215)

Frequently Asked Questions About the BCSP CHST Exam

How many questions are on the CHST exam, and how long do I have?
The exam has 200 multiple-choice questions, and you have 4 hours to finish.

What score do I need to pass?
BCSP does not publish a fixed passing percentage for the CHST. Focus on consistent, broad competence across all four domains rather than chasing a target number.

How hard is the CHST exam?
The CHST tests how you apply safety knowledge to realistic construction scenarios, so field experience helps but doesn’t replace study. Plan structured preparation across all four domains, with extra practice on hazard and risk control questions.

When will I get my results?
You receive your results before you leave the Pearson VUE test center.

What if I don’t pass?
Once your application is approved, you have one year to take and pass the exam. You can retest while eligible, but each attempt must be at least six weeks after the last one, and each attempt requires a new exam fee.

Has the CHST blueprint changed recently?
The current CHST5 blueprint took effect April 12, 2022, and remains the version in use. Check the CHST page before you test in case BCSP announces an update.

How do I keep the CHST once I earn it?
You pay an annual renewal fee and earn 20 recertification points every five years.

Start Preparing for the BCSP CHST Exam With Pocket Prep

A clear view of the blueprint is the first step, and steady practice does the rest. Pocket Prep’s BCSP CHST exam prep includes 400 practice questions organized by the four CHST5 domains, each with a detailed explanation, so you learn why the best answer is best. Use Weakest Subject and Missed Questions to close gaps, then build stamina with Timed Quiz. You’ve already put in the jobsite hours, so now it’s time to show what you know.