FREE NWSA Tower Structures and Inspection Questions and Answers

Question 1

According to the ANSI/TIA-222-H standard, what is the maximum recommended inspection interval for a guyed mast tower under normal environmental conditions?

Accepted Answer

Every 3 years

Answer

Every year

Answer

Every 5 years

Answer

Every 10 years

Question 2

During an inspection of a monopole, a technician ensures the small opening at the base of each slip joint is clear of debris. What is the primary purpose of this component, known as a weep hole?

Accepted Answer

To permit the drainage of internal condensation and moisture.

Answer

To allow for the attachment of grounding conductors.

Answer

To verify the proper overlap distance of the sections.

Answer

To provide a lifting point for maintenance activities.

Question 3

An inspector finds severe, localized corrosion where a stainless steel bracket is bolted directly to a galvanized steel tower leg. Which of the following best describes this type of corrosion?

Accepted Answer

Galvanic corrosion

Answer

Pitting corrosion

Answer

Crevice corrosion

Answer

Uniform etch corrosion

Question 4

While performing a hands-on inspection of a guy wire, a technician discovers two broken wires within a single strand lay length. What is the generally accepted course of action according to industry standards?

Accepted Answer

Immediately report the condition for engineering review and likely replacement.

Answer

Note the finding for monitoring during the next inspection cycle.

Answer

Clean and lubricate the area to prevent further breakage.

Answer

Apply a serving wire over the break as a temporary repair.

Question 5

Which of the following findings during a visual inspection of a concrete tower foundation would require the most urgent attention and a formal structural engineering assessment?

Accepted Answer

A large, vertical crack that runs through a pier and shows signs of displacement.

Answer

Minor surface efflorescence (white, powdery deposits).

Answer

Small, non-moving hairline cracks on the surface.

Answer

Exposed anchor bolt threads with no visible corrosion.

Question 6

On a lattice-type self-supporting tower, what is the primary function of the diagonal members that crisscross between the main tower legs?

Accepted Answer

To resist shear forces from wind and transfer loads between horizontal members.

Answer

To serve as the primary climbing facility for technicians.

Answer

To provide attachment points for antennas and transmission lines.

Answer

To act as the main vertical load-bearing components of the structure.