How to pass the CHST exam

A plain study plan for the BCSP® CHST, built from BCSP's own pages. Who qualifies, what the exam costs, how the four domains are weighted, and how to split your study time.

Published October 17, 2026. Facts checked against the sources listed below.

In short: the Construction Health and Safety Technician (CHST) exam from the Board of Certified Safety Professionals (BCSP®) is a 4-hour, computer-based exam on the CHST5 blueprint. One domain, Hazard and Risk Identification and Control, is 36.6% of it. Confirm you qualify, give your study hours to each domain in proportion to its weight, learn the construction standards behind the hazards, and practice timed questions until you can explain why each wrong answer is wrong.

Step 1: confirm you qualify

BCSP's CHST requirements are short:

Three years of experience in construction safety, where at least 35% of your job duties require(d) technical skills and knowledge in safety, health and environment (SH&E).
Passing the CHST exam.
Keeping the credential: an annual renewal fee and recertification every five years.

There is no degree requirement and no prior credential needed. You must also disclose any criminal conviction or any professional license or credential that was suspended, revoked or put on probation. BCSP reviews these confidentially but may deny an application based on them.

If you are unsure whether your work counts, the exam eligibility checker walks through it, and BCSP's CHST page has the full wording.

Step 2: know the costs and the clock

These are BCSP's current CHST fees from its Credentials At-A-Glance sheet. BCSP notes fees can change without notice, so check before you pay.

Item	Fee
Application	$140
Exam (one attempt)	$300
Application and exam together	$426
Exam bundle (two attempts plus one self-assessment)	$550
One-time eligibility extension	$100
Annual renewal	$150

The clock matters as much as the money:

Once BCSP approves your application, you have one year to take and pass the exam.
If you are within 60 days of that deadline, you can pay for a one-time extension valid for one year.
You can schedule an exam only if it is at least six weeks after your last attempt.

That six-week gap is why the bundle exists. If a retake is a real possibility, a second attempt has to fit inside your one-year window.

Step 3: study by blueprint weight

The current outline is CHST5 (document version V.2022.04.12). It has four domains:

Domain	Weight	Example: 60 study hours
1. Hazard and Risk Identification and Control	36.6%	22 hours
2. Emergency Preparedness, Incident Investigation, and Response	19.9%	12 hours
3. Safety Program Development, Implementation, and Sustainment	22.5%	13.5 hours
4. Leadership, Communication, and Training	21%	12.5 hours

The hours column is just the weights applied to a 60-hour example, not a BCSP recommendation. Use your own total. The study plan calculator does this split from your exam date and weekly hours.

Two things stand out:

Domain 1 is over a third of the exam. Its knowledge list runs to 31 hazard areas, from hot work, excavations, fall protection, confined spaces, cranes and rigging to asbestos, lead, silica, noise, radiation and concrete work. Its skills include applying the hierarchy of controls and writing job hazard analyses.
Domains 3 and 4 together are 43.5%. That is site-specific safety plans, inspections, recordkeeping, incident causation, training methods, communication and leadership. If most of your experience is field work, give these domains their full share of time.

Each domain has its own page with practice questions: Domain 1, Domain 2, Domain 3 and Domain 4.

Step 4: learn the standards behind the hazards

BCSP says every CHST question is supported by a published reference, and its reference list is mostly safety textbooks and handbooks. The blueprint also lists "applicable health, safety, and environmental standards" and applying "relevant standards to worksite conditions." For US construction, that usually means OSHA's construction standards in 29 CFR 1926.

The trigger heights and depths are worth knowing cold. These come straight from the regulation text:

Rule	What it says	Citation
Fall protection	Unprotected sides and edges 6 feet or more above a lower level need guardrails, safety nets or personal fall arrest	29 CFR 1926.501(b)(1)
Scaffolds	Workers on a scaffold more than 10 feet above a lower level must be protected from falling	29 CFR 1926.451(g)(1)
Trench egress	Trenches 4 feet or more deep need a stairway, ladder, ramp or other safe exit within 25 feet of lateral travel	29 CFR 1926.651(c)(2)
Cave-in protection	A protective system is required unless the excavation is entirely in stable rock, or under 5 feet deep with a competent person finding no sign of a potential cave-in	29 CFR 1926.652(a)(1)
Portable ladders	Side rails must extend at least 3 feet above the upper landing, or the ladder must be secured at the top with a grab rail	29 CFR 1926.1053(b)(1)

Notice how the numbers differ: 6 feet for general fall protection, 10 feet on scaffolds, 4 feet for trench egress, 5 feet for cave-in protection. Mixing these up is an easy way to lose points, so drill them side by side.

Short video lessons cover the big ones: fall protection, scaffolds, excavations and ladders and stairways.

Step 5: practice under exam conditions

BCSP's own description of exam day tells you how to practice:

Each question has four options and only one best answer. Practice picking the best answer, not just a true one.
You get an on-screen calculator that emulates the TI-30XS, plus a whiteboard. You cannot bring your own calculator or a formula sheet.
When a question needs a formula, it is included in the question, unless the question is testing whether you know the formula.
About 12% of questions are unscored beta items mixed in with the rest. You will not know which, so treat every question as if it counts.
You can take breaks, but the exam clock keeps running.

So practice on a scientific calculator like the TI-30XS, and run at least one full 4-hour timed session before test day. The CHST formula sheet and the OSHA incident rate calculator show the common calculations with worked steps.

A few habits that help:

Answer a few questions every day. The question of the day is one free CHST question with a cited answer.
Keep a list of every question you miss and the rule behind it. Re-test those first.
Read the explanation even when you get one right, so a lucky guess doesn't hide a gap.

Step 6: test day

From BCSP's exam-day guidance:

Bring a current government-issued photo ID with a signature. The name must match your BCSP record exactly, or you will not be allowed to test.
No food or drink in the testing room, and no access to your belongings during the exam.
You agree to a confidentiality agreement and the BCSP Code of Ethics before the exam starts, then you can take a short tutorial.
Testing accommodations must be approved before you schedule. Email accommodations@bcsp.org. They cannot be requested at the test center.

The exam is taken by computer at a Pearson VUE test center, and BCSP says official results are available as soon as you submit.

Is the CHST outline changing?

Not yet. CHST5 has been the CHST outline since August 1, 2024. BCSP's Exam Development page lists a CHST job and task analysis panel for December 7 to 9, 2026, which is the first step toward a future outline. BCSP has not announced a new outline or date. If your exam is in the next year, study CHST5. We track this on the CHST job task analysis update.

FAQ

How long is the CHST exam?

BCSP allows 4 hours. It is taken by computer at a Pearson VUE test center.

Do I need a degree for the CHST?

No. BCSP lists no education requirement. You need three years of construction safety experience where at least 35% of your duties involve SH&E technical skills and knowledge.

Can I bring a formula sheet or calculator?

No. You get an on-screen TI-30XS-style calculator and a whiteboard. Formulas a question needs are given in the question, unless the question tests whether you know the formula.

How soon can I retake the CHST?

You can schedule a new attempt no sooner than six weeks after your last one, and it must fall inside the one-year window after your application was approved.

What is the CHST pass rate?

BCSP publishes candidate counts and pass rates in its annual report. We copied the latest figures, with the page number, in ASP, CSP and CHST pass rates. PassCited does not publish a pass rate of its own.

Should I take the CHST or the ASP?

They are different credentials. The CHST is construction-focused and needs three years of construction safety experience. The ASP needs a degree and one year of SH&E experience, and it leads toward the CSP. See ASP vs CSP for that path, and the CHST prep comparison if you are choosing a course.