NWSA TTT-1 Exam – Comprehensive
Practice Test (2026 Update)
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.
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.
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
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 .
Practice Test (2026 Update)
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.
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.
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
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 .
