NWSA TTT-1 Exam – Comprehensive
Practice Test (2026 Update) 140+
Questions with Answers and Rationales
1. What is the primary purpose of the NWSA TTT-1 certification?
A. To authorize a technician to design tower foundations.
B. To verify a technician's ability to perform basic tower work safely.
C. To qualify a technician to supervise a large crew.
D. To certify a technician in RF engineering.
Answer: B
Rationale: The TTT-1 (Tower Technician Level 1) certification is an entry-level
credential that validates a technician's knowledge and ability to perform
fundamental tower climbing and work activities safely under the direction of a
more qualified person.
2. According to OSHA, what is the minimum height at which fall protection is
required in the construction industry?
A. 4 feet
B. 6 feet
C. 10 feet
D. 15 feet
Answer: B
Rationale: OSHA standard 29 CFR 1926.501 specifies that fall protection is
required for employees working at heights of six feet or more above a lower level
in the construction industry.
3. A "competent person" on a tower site is defined as someone who:
A. Has the most seniority on the crew.
B. Is capable of identifying existing and predictable hazards and has the authority
to take corrective action.
pg. 1
,C. Has passed the TTT-1 exam.
D. Is a licensed professional engineer.
Answer: B
Rationale: This is the OSHA definition of a competent person. It is based on the
ability to recognize hazards and the authority to fix them, not just on experience or
certifications.
4. Which of the following is required on all active tower sites to protect against
falling objects?
A. Safety glasses
B. Hard hat
C. Ear plugs
D. High-visibility vest
Answer: B
Rationale: Hard hats are a fundamental piece of Personal Protective Equipment
(PPE) on any jobsite with overhead hazards, such as tools or materials being
hoisted on a tower site.
5. The dorsal D-ring on a full-body harness is located:
A. On the chest
B. On the waist (side)
C. Between the shoulder blades (on the back)
D. At the sternum
Answer: C
Rationale: The dorsal D-ring is the primary fall-attachment point located on the
back of the harness between the shoulder blades, designed to keep a worker
upright after a fall.
6. What is the primary function of a shock-absorbing lanyard?
A. To allow for more freedom of movement while climbing.
B. To limit the arresting forces on the body during a fall.
C. To increase the total free-fall distance.
D. To serve as a positioning device.
pg. 2
,Answer: B
Rationale: The shock absorber (or energy absorber) deploys during a fall to
dissipate kinetic energy, thereby reducing the maximum arresting force exerted on
the worker's body to below 1,800 pounds.
7. What is the maximum free-fall distance allowed by OSHA for a personal fall
arrest system?
A. 2 feet
B. 4 feet
C. 6 feet
D. 10 feet
Answer: C
Rationale: OSHA regulations (29 CFR 1926.502) state that personal fall arrest
systems must limit the maximum free fall distance to 6 feet.
8. What is the minimum breaking strength required for a non-engineered fall arrest
anchor point?
A. 1,800 pounds
B. 3,600 pounds
C. 5,000 pounds per attached employee
D. 10,000 pounds
Answer: C
Rationale: OSHA requires that anchorages for personal fall arrest systems be
capable of supporting at least 5,000 pounds per employee attached, or be designed
by a qualified person with a safety factor of at least two.
9. What is the maximum arresting force a personal fall arrest system may exert on
a worker?
A. 900 pounds
B. 1,800 pounds
C. 2,500 pounds
D. 5,000 pounds
pg. 3
, Answer: B
Rationale: OSHA mandates that a personal fall arrest system must limit the
maximum arresting force on an employee to 1,800 pounds when using a full-body
harness.
10. When should damaged or defective safety equipment, like a lanyard, be
handled?
A. It can be used for light duty work only.
B. It should be repaired by the technician in the field.
C. It must be immediately tagged "out of service" and removed from the
jobsite.
D. It can be used until the end of the shift.
Answer: C
Rationale: Any damaged or defective equipment must be immediately removed
from service to prevent accidental use, in accordance with all manufacturer's
instructions and safety policies.
11. What is the correct sequence for attaching a ladder hook or climbing device?
A. Attach the device to the tower first, then to your harness.
B. Attach to your harness first, then to the tower.
C. It does not matter as long as both are attached.
D. Never use a ladder hook; always use a separate lanyard.
Answer: B
Rationale: Attach the climbing device to your harness first; then, while still tied off
with your fall arrest lanyard, attach the device to the tower. This prevents
dropping the device and ensures you never have both hands free without
protection.
12. Which of the following is a critical component of a pre-climb safety check?
A. Checking the weather forecast for the week.
B. Inspecting all PPE (harness, lanyard, carabiners) for wear or damage.
C. Reviewing the company's vacation policy.
D. Counting the number of bolts on the tower.
pg. 4
Practice Test (2026 Update) 140+
Questions with Answers and Rationales
1. What is the primary purpose of the NWSA TTT-1 certification?
A. To authorize a technician to design tower foundations.
B. To verify a technician's ability to perform basic tower work safely.
C. To qualify a technician to supervise a large crew.
D. To certify a technician in RF engineering.
Answer: B
Rationale: The TTT-1 (Tower Technician Level 1) certification is an entry-level
credential that validates a technician's knowledge and ability to perform
fundamental tower climbing and work activities safely under the direction of a
more qualified person.
2. According to OSHA, what is the minimum height at which fall protection is
required in the construction industry?
A. 4 feet
B. 6 feet
C. 10 feet
D. 15 feet
Answer: B
Rationale: OSHA standard 29 CFR 1926.501 specifies that fall protection is
required for employees working at heights of six feet or more above a lower level
in the construction industry.
3. A "competent person" on a tower site is defined as someone who:
A. Has the most seniority on the crew.
B. Is capable of identifying existing and predictable hazards and has the authority
to take corrective action.
pg. 1
,C. Has passed the TTT-1 exam.
D. Is a licensed professional engineer.
Answer: B
Rationale: This is the OSHA definition of a competent person. It is based on the
ability to recognize hazards and the authority to fix them, not just on experience or
certifications.
4. Which of the following is required on all active tower sites to protect against
falling objects?
A. Safety glasses
B. Hard hat
C. Ear plugs
D. High-visibility vest
Answer: B
Rationale: Hard hats are a fundamental piece of Personal Protective Equipment
(PPE) on any jobsite with overhead hazards, such as tools or materials being
hoisted on a tower site.
5. The dorsal D-ring on a full-body harness is located:
A. On the chest
B. On the waist (side)
C. Between the shoulder blades (on the back)
D. At the sternum
Answer: C
Rationale: The dorsal D-ring is the primary fall-attachment point located on the
back of the harness between the shoulder blades, designed to keep a worker
upright after a fall.
6. What is the primary function of a shock-absorbing lanyard?
A. To allow for more freedom of movement while climbing.
B. To limit the arresting forces on the body during a fall.
C. To increase the total free-fall distance.
D. To serve as a positioning device.
pg. 2
,Answer: B
Rationale: The shock absorber (or energy absorber) deploys during a fall to
dissipate kinetic energy, thereby reducing the maximum arresting force exerted on
the worker's body to below 1,800 pounds.
7. What is the maximum free-fall distance allowed by OSHA for a personal fall
arrest system?
A. 2 feet
B. 4 feet
C. 6 feet
D. 10 feet
Answer: C
Rationale: OSHA regulations (29 CFR 1926.502) state that personal fall arrest
systems must limit the maximum free fall distance to 6 feet.
8. What is the minimum breaking strength required for a non-engineered fall arrest
anchor point?
A. 1,800 pounds
B. 3,600 pounds
C. 5,000 pounds per attached employee
D. 10,000 pounds
Answer: C
Rationale: OSHA requires that anchorages for personal fall arrest systems be
capable of supporting at least 5,000 pounds per employee attached, or be designed
by a qualified person with a safety factor of at least two.
9. What is the maximum arresting force a personal fall arrest system may exert on
a worker?
A. 900 pounds
B. 1,800 pounds
C. 2,500 pounds
D. 5,000 pounds
pg. 3
, Answer: B
Rationale: OSHA mandates that a personal fall arrest system must limit the
maximum arresting force on an employee to 1,800 pounds when using a full-body
harness.
10. When should damaged or defective safety equipment, like a lanyard, be
handled?
A. It can be used for light duty work only.
B. It should be repaired by the technician in the field.
C. It must be immediately tagged "out of service" and removed from the
jobsite.
D. It can be used until the end of the shift.
Answer: C
Rationale: Any damaged or defective equipment must be immediately removed
from service to prevent accidental use, in accordance with all manufacturer's
instructions and safety policies.
11. What is the correct sequence for attaching a ladder hook or climbing device?
A. Attach the device to the tower first, then to your harness.
B. Attach to your harness first, then to the tower.
C. It does not matter as long as both are attached.
D. Never use a ladder hook; always use a separate lanyard.
Answer: B
Rationale: Attach the climbing device to your harness first; then, while still tied off
with your fall arrest lanyard, attach the device to the tower. This prevents
dropping the device and ensures you never have both hands free without
protection.
12. Which of the following is a critical component of a pre-climb safety check?
A. Checking the weather forecast for the week.
B. Inspecting all PPE (harness, lanyard, carabiners) for wear or damage.
C. Reviewing the company's vacation policy.
D. Counting the number of bolts on the tower.
pg. 4
