CHST Domain 1: Hazard and Risk Identification and Control
Domain 1 is 36.6% of the CHST, the heaviest of 4 domains by weight. PassCited has 276 questions for it.
BCSP's CHST5 Examination Blueprint, V.2022.04.12 weights Hazard and Risk Identification and Control at 36.6% of the CHST, a 4-hour exam. It is one of the two heaviest domains, so it deserves a large share of your study time.
Blueprint tasks we cover in this domain
Task numbers follow the BCSP blueprint. Tasks with no public-domain source (for example ISO standards or management theory) are thin or missing in our bank, and we say so rather than invent content.
- K1.1 Hot work
- K1.2 Electrical hazards and controls
- K1.3 Excavations
- K1.4 Working at heights
- K1.5 Fall protection, arrest and restraint
- K1.5 Fall protection, arrest, and restraint
- K1.6 Confined spaces
- K1.7 Struck-by
- K1.8 Mechanized equipment
- K1.9 Hoisting and rigging
- K1.10 Crane operations
- K1.11–K1.13 Material handling, storage, housekeeping
- K1.14 Powder-actuated tools
- K1.15 Hand and power tools
- K1.16 Asbestos exposure
- K1.17 Lead and heavy metals
- K1.18 Noise
- K1.18 Noise exposure
- K1.19 Radiation
- K1.20 Silica exposure
- K1.21 Chemical exposure
- K1.22 Environmental and weather conditions
- K1.24 GHS
- K1.28 PPE requirements, usage and limitations
- K1.31 Concrete work
- S1.1 Assess risk (severity x probability)
- S1.5 Select protective equipment
Topics
- Construction Fall Protection19 questions
- Scaffolds12 questions
- Ladders and Stairways8 questions
- Excavations and Trenching13 questions
- Construction Electrical Safety10 questions
- Hot Work, Welding and Cutting8 questions
- Confined Spaces in Construction12 questions
- Cranes, Hoisting and Rigging14 questions
- Heavy Equipment and Struck-By Hazards11 questions
- Material Handling, Storage and Housekeeping5 questions
- Hand, Power and Powder-Actuated Tools8 questions
- Respirable Crystalline Silica in Construction10 questions
- Asbestos in Construction12 questions
- Lead in Construction9 questions
- Noise, Hearing Protection, Radiation and Lasers8 questions
- Construction PPE8 questions
- Concrete and Masonry Construction8 questions
- Hazard Communication and GHS11 questions
- Construction Safety Math: Noise and Excavation Slopes32 questions
- Fall Distance and Clearance Calculations16 questions
- Rigging and Sling Calculations18 questions
- Heat Index, WBGT and Wind Chill12 questions
- Risk Assessment Matrix (MIL-STD-882E)12 questions
Regulations this domain's questions cite most
- 29 CFR 1926.502: Fall protection systems criteria and practices 16 questions
- 29 CFR 1926.1101: Asbestos 12 questions
- 29 CFR 1926.451: General requirements 12 questions
- 29 CFR 1910.1200: Hazard communication 11 questions
- 29 CFR 1926.1153: Respirable crystalline silica 10 questions
- 29 CFR 1926.62: Lead 9 questions
- 29 CFR 1926.404: Wiring design and protection 9 questions
- 29 CFR 1926.652: Requirements for protective systems 7 questions
- 29 CFR 1926.602: Material handling equipment 7 questions
- 29 CFR 1926.1053: Ladders 6 questions
Free Domain 1 practice questions
Question 1
A concrete crew is tying rebar mats on the face of a vertical wall form. The workers will be about 9 feet above the lower level. The competent person must select protection that complies with the standard. Which choice is compliant?
Show answer and source
Answer: B. Personal fall arrest systems, safety net systems, or positioning device systems
For employees on the face of formwork or reinforcing steel who could fall 6 feet or more, the standard lists personal fall arrest, safety net, or positioning device systems. Guardrails, warning lines, and controlled access zones are not the methods the standard lists for this work.
Answer B rests on
29 CFR 1926.501(b)(5)(opens ecfr.gov in a new tab)“Each employee on the face of formwork or reinforcing steel shall be protected from falling 6 feet (1.8 m) or more to lower levels by personal fall arrest systems, safety net systems, or positioning device systems.”
Question 2
A crew sets up a 24-foot non-self-supporting extension ladder against a wall so the distance along the ladder between the foot and the top support is 20 feet. To meet the standard's angle requirement, approximately how far from the wall should the foot of the ladder be placed?
Show answer and source
Answer: A. 5 feet
The standard sets the horizontal distance at approximately one-quarter of the working length, which is 20 ft ÷ 4 = 5 ft. The 2.5-foot figure uses one-eighth, which applies only to wood job-made ladders with spliced side rails.
Answer A rests on
29 CFR 1926.1053(b)(5)(i)(opens ecfr.gov in a new tab)“Non-self-supporting ladders shall be used at an angle such that the horizontal distance from the top support to the foot of the ladder is approximately one-quarter of the working length of the ladder (the distance along the ladder between the foot and the top support).”
Question 3
A crew is excavating a 6-foot-deep utility trench on a site that was previously a landfill. The competent person asks when the atmosphere in the trench must be tested. According to the standard, when is testing required?
Show answer and source
Answer: A. Before employees enter the excavation, because a hazardous atmosphere could reasonably be expected and the depth is greater than 4 feet
The standard requires testing before employees enter excavations deeper than 4 feet where a hazardous atmosphere could reasonably be expected, such as in landfill areas. Waiting for symptoms or using a 12-foot threshold would not protect workers, and neither appears in the standard.
Answer A rests on
29 CFR 1926.651(g)(1)(i)(opens ecfr.gov in a new tab)“Where oxygen deficiency (atmospheres containing less than 19.5 percent oxygen) or a hazardous atmosphere exists or could reasonably be expected to exist, such as in excavations in landfill areas or excavations in areas where hazardous substances are stored nearby, the atmospheres in the excavation shall be tested before employees enter excavations greater than 4 feet (1.22 m) in depth.”
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Domain names and weights from BCSP's public blueprint. Original practice questions, not real exam items. PassCited is not affiliated with or endorsed by BCSP.