Page 1 of 180
CHST® PRACTICE TEST 2026-2027: 250+
PREMIUM MULTIPLE-CHOICE QUESTIONS
WITH DETAILED RATIONALES |
CONSTRUCTION HEALTH AND SAFETY
TECHNICIAN EXAM PREP
itsjereguides
# DOMAIN 1: PROGRAM MANAGEMENT
## 70 Questions
### 1.1 Construction Means, Methods, and Materials (10 Questions)
---
**Question 1**
**Bloom's Level: Remember**
Which of the following is the correct definition of "inerting" as it applies to confined space
safety in construction?
A) The displacement of the atmosphere in a permit-required confined space by a non-
combustible gas to such an extent that the resulting atmosphere is non-combustible
B) The introduction of oxygen into a confined space to support combustion for testing purposes
,Page 2 of 180
C) The process of ventilating a confined space using mechanical means to remove hazardous
gases
D) The isolation of a confined space from all energy sources to prevent accidental activation
**Correct Answer: A**
**Rationale:** Inerting is specifically defined as the displacement of the atmosphere in a permit-
required confined space by a non-combustible gas (such as nitrogen) to render the atmosphere
non-combustible. This is a critical safety procedure when entering spaces that may contain
flammable or combustible atmospheres. Option B is incorrect because introducing oxygen would
create a hazardous condition. Option C describes ventilation, not inerting. Option D describes
energy isolation, which is a different safety procedure .
---
**Question 2**
**Bloom's Level: Understand**
A construction project involves excavation work in an area with Type C soil. According to
OSHA standards, what is the maximum allowable slope angle for the excavation walls without
shoring?
A) 1:1 (45 degrees)
B) 1:1.5 (34 degrees)
C) 1.5:1 (34 degrees)
D) 2:1 (26.5 degrees)
**Correct Answer: D**
,Page 3 of 180
**Rationale:** Type C soil is the least stable and requires the shallowest slope angle. OSHA
requires a 1.5H:1V slope (approximately 34 degrees) for stable rock, 1H:1V for Type A, 1.5H:1V
for Type B, and 2H:1V for Type C soil. Option D correctly identifies the 2:1 ratio for Type C
soil, which provides the necessary stability for worker safety. Options A, B, and C represent
incorrect slope requirements for this soil type .
---
**Question 3**
**Bloom's Level: Apply**
A construction site has a crane with a rated capacity of 20,000 pounds. The load to be lifted
weighs 15,000 pounds, with rigging that weighs 500 pounds. The crane operator is preparing to
lift the load at a 45-degree boom angle. Which of the following actions should the site safety
technician recommend?
A) Proceed with the lift as planned since the load is within the rated capacity
B) Reduce the load weight by removing non-essential components
C) Recalculate the effective capacity at the specific boom angle and radius before proceeding
D) Use a larger crane with a higher rated capacity regardless of calculations
**Correct Answer: C**
**Rationale:** Crane capacity ratings are based on specific boom angles and radii. The rated
capacity of 20,000 pounds is typically the maximum at optimum configuration, not at all
positions. As the boom angle changes, the effective capacity decreases. The safety technician
must verify the load chart for the specific configuration. Option C correctly identifies the need to
recalculate for the actual operating conditions. Option A is dangerous because it assumes
capacity is constant across all configurations. Option B may not be practical or necessary if the
configuration is within safe limits. Option D is unnecessarily conservative and may not address
the immediate situation .
, Page 4 of 180
**Question 4**
**Bloom's Level: Analyze**
A scaffold system on a construction site has been assembled with guardrails on all open sides and
ends. The top rail is installed at 38 inches above the platform, the midrail at 19 inches, and toe
boards are in place. During inspection, you notice that the scaffold is not tied to the building
structure and is freestanding at 28 feet in height. Based on your analysis, which of the following
is the most significant concern?
A) The top rail height is 2 inches below the OSHA requirement
B) The midrail height does not match the standard 21-inch requirement
C) The scaffold exceeds the maximum allowable freestanding height without guying or tying
D) The toe boards are present but may not be properly secured
**Correct Answer: C**
**Rationale:** The most significant concern is that the scaffold exceeds the maximum allowable
freestanding height. OSHA requires scaffolds to be guyed, tied, or braced when the height
exceeds 4 times the minimum base dimension (for supported scaffolds) or when the height
exceeds 26 feet for tube and coupler scaffolds, depending on the type. A 28-foot freestanding
scaffold presents a significant stability hazard that could lead to collapse. While the top rail at 38
inches is 4 inches below the OSHA requirement (42 inches ± 3 inches), this is a less critical issue
compared to the stability concern. The midrail height of 19 inches is acceptable (within the 20-30
inch range), and toe board concerns are secondary .
---
**Question 5**
**Bloom's Level: Evaluate**
CHST® PRACTICE TEST 2026-2027: 250+
PREMIUM MULTIPLE-CHOICE QUESTIONS
WITH DETAILED RATIONALES |
CONSTRUCTION HEALTH AND SAFETY
TECHNICIAN EXAM PREP
itsjereguides
# DOMAIN 1: PROGRAM MANAGEMENT
## 70 Questions
### 1.1 Construction Means, Methods, and Materials (10 Questions)
---
**Question 1**
**Bloom's Level: Remember**
Which of the following is the correct definition of "inerting" as it applies to confined space
safety in construction?
A) The displacement of the atmosphere in a permit-required confined space by a non-
combustible gas to such an extent that the resulting atmosphere is non-combustible
B) The introduction of oxygen into a confined space to support combustion for testing purposes
,Page 2 of 180
C) The process of ventilating a confined space using mechanical means to remove hazardous
gases
D) The isolation of a confined space from all energy sources to prevent accidental activation
**Correct Answer: A**
**Rationale:** Inerting is specifically defined as the displacement of the atmosphere in a permit-
required confined space by a non-combustible gas (such as nitrogen) to render the atmosphere
non-combustible. This is a critical safety procedure when entering spaces that may contain
flammable or combustible atmospheres. Option B is incorrect because introducing oxygen would
create a hazardous condition. Option C describes ventilation, not inerting. Option D describes
energy isolation, which is a different safety procedure .
---
**Question 2**
**Bloom's Level: Understand**
A construction project involves excavation work in an area with Type C soil. According to
OSHA standards, what is the maximum allowable slope angle for the excavation walls without
shoring?
A) 1:1 (45 degrees)
B) 1:1.5 (34 degrees)
C) 1.5:1 (34 degrees)
D) 2:1 (26.5 degrees)
**Correct Answer: D**
,Page 3 of 180
**Rationale:** Type C soil is the least stable and requires the shallowest slope angle. OSHA
requires a 1.5H:1V slope (approximately 34 degrees) for stable rock, 1H:1V for Type A, 1.5H:1V
for Type B, and 2H:1V for Type C soil. Option D correctly identifies the 2:1 ratio for Type C
soil, which provides the necessary stability for worker safety. Options A, B, and C represent
incorrect slope requirements for this soil type .
---
**Question 3**
**Bloom's Level: Apply**
A construction site has a crane with a rated capacity of 20,000 pounds. The load to be lifted
weighs 15,000 pounds, with rigging that weighs 500 pounds. The crane operator is preparing to
lift the load at a 45-degree boom angle. Which of the following actions should the site safety
technician recommend?
A) Proceed with the lift as planned since the load is within the rated capacity
B) Reduce the load weight by removing non-essential components
C) Recalculate the effective capacity at the specific boom angle and radius before proceeding
D) Use a larger crane with a higher rated capacity regardless of calculations
**Correct Answer: C**
**Rationale:** Crane capacity ratings are based on specific boom angles and radii. The rated
capacity of 20,000 pounds is typically the maximum at optimum configuration, not at all
positions. As the boom angle changes, the effective capacity decreases. The safety technician
must verify the load chart for the specific configuration. Option C correctly identifies the need to
recalculate for the actual operating conditions. Option A is dangerous because it assumes
capacity is constant across all configurations. Option B may not be practical or necessary if the
configuration is within safe limits. Option D is unnecessarily conservative and may not address
the immediate situation .
, Page 4 of 180
**Question 4**
**Bloom's Level: Analyze**
A scaffold system on a construction site has been assembled with guardrails on all open sides and
ends. The top rail is installed at 38 inches above the platform, the midrail at 19 inches, and toe
boards are in place. During inspection, you notice that the scaffold is not tied to the building
structure and is freestanding at 28 feet in height. Based on your analysis, which of the following
is the most significant concern?
A) The top rail height is 2 inches below the OSHA requirement
B) The midrail height does not match the standard 21-inch requirement
C) The scaffold exceeds the maximum allowable freestanding height without guying or tying
D) The toe boards are present but may not be properly secured
**Correct Answer: C**
**Rationale:** The most significant concern is that the scaffold exceeds the maximum allowable
freestanding height. OSHA requires scaffolds to be guyed, tied, or braced when the height
exceeds 4 times the minimum base dimension (for supported scaffolds) or when the height
exceeds 26 feet for tube and coupler scaffolds, depending on the type. A 28-foot freestanding
scaffold presents a significant stability hazard that could lead to collapse. While the top rail at 38
inches is 4 inches below the OSHA requirement (42 inches ± 3 inches), this is a less critical issue
compared to the stability concern. The midrail height of 19 inches is acceptable (within the 20-30
inch range), and toe board concerns are secondary .
---
**Question 5**
**Bloom's Level: Evaluate**
