NCIDQ - IDFX - Ch. 11 - Interior
Construction Exam Questions And Answers
Latest 2025
Plenum -
correct answer ✅The area above the ceiling tile or below the
subfloor in a building.
Seismic Restraints -
correct answer ✅Structural elements designed to keep
nonstructural elements in place during earthquakes, are required
for ceilings and ceiling mounted items.
Seismic Design Category -
correct answer ✅A classification assigned to a structure based on
soil conditions, where the structure is located, and risk (or
occupancy category)
Soil Classification -
correct answer ✅A) Hard rock
B) Rock
C) Very dense soil and soft rock
D) Stiff soil - Default when unknown
E) Soft soil
F) Special soil
, NCIDQ - IDFX - Ch. 11 - Interior
Construction Exam Questions And Answers
Latest 2025
Seismic Risk/Occupancy Categories -
correct answer ✅I) Miscellaneous Structures
II) Standard occupancy structures
III) Hazardous Structures
IV) Essential Structures
Seismic Design Categories -
correct answer ✅A (least restrictive) to F (most restrictive)
A & B - no special requirements
D, E, F - Stringent earthquake req's and ceiling details
No special ceiling requirements for the following: -
correct answer ✅- Structures in seismic design cat. A or B
- Ceilings w/ area less than 144 sq ft
- Gyp wallboard suspension systems
- Plaster and lath ceilings
Construction Exam Questions And Answers
Latest 2025
Plenum -
correct answer ✅The area above the ceiling tile or below the
subfloor in a building.
Seismic Restraints -
correct answer ✅Structural elements designed to keep
nonstructural elements in place during earthquakes, are required
for ceilings and ceiling mounted items.
Seismic Design Category -
correct answer ✅A classification assigned to a structure based on
soil conditions, where the structure is located, and risk (or
occupancy category)
Soil Classification -
correct answer ✅A) Hard rock
B) Rock
C) Very dense soil and soft rock
D) Stiff soil - Default when unknown
E) Soft soil
F) Special soil
, NCIDQ - IDFX - Ch. 11 - Interior
Construction Exam Questions And Answers
Latest 2025
Seismic Risk/Occupancy Categories -
correct answer ✅I) Miscellaneous Structures
II) Standard occupancy structures
III) Hazardous Structures
IV) Essential Structures
Seismic Design Categories -
correct answer ✅A (least restrictive) to F (most restrictive)
A & B - no special requirements
D, E, F - Stringent earthquake req's and ceiling details
No special ceiling requirements for the following: -
correct answer ✅- Structures in seismic design cat. A or B
- Ceilings w/ area less than 144 sq ft
- Gyp wallboard suspension systems
- Plaster and lath ceilings
