Page |1
NCIDQ IDPX Prep Exam Questions and
Correct Answers/ Latest Update / Already
Graded
Why does the HVAC system need to be balanced at the end of a
commercial project?
A. To verify that air quality levels are within the design specifications
B. To detect significant air leaks in the ductwork.
C. To adjust airflow at each device location to meet the criteria in the
engineer's design
D. To determine that each office is receiving the amount of outside air
required by the design
Ans: The correct answer is C. Balancing the HVAC system is the
process of measuring air flow from diffusers and making
adjustments to avoid hot and cold spots within a space. It does
not measure air quality, ductwork leaks or outside air.
P1 Project Coordination
The typical chronological order of system installation in new
commercial construction is:
All rights reserved © 2025/ 2026 |
, Page |2
A. HVAC, Plumbing, Electrical
B. Electrical, Plumbing, HVAC
C. Plumbing, HVAC, Electrical
D. Electrical, HVAC, Plumbing
Ans: The correct answer is C. Once the interior of a building is
sufficiently protected from the weather, the waste lines and
water supply lines of the plumbing system are installed and, if
specified, the pipes for the sprinkler system. The major part of
the work for the HVAC system is carried out, including the
installation of boilers, chillers, cooling towers, pumps, fans,
piping, and ductwork. Electrical, communications, and control
wiring are routed through the building.
P3 Building Systems and Integration
In which situation would an interior designer use a construction change
directive?
A. To request an electrical contractor not listed by the contractor in
the bid [tender] documents
B. To request pricing for an additional receptacle per the client's
request
All rights reserved © 2025/ 2026 |
, Page |3
C. To provide additional dimensions to the contractor regarding a
receptacle location
D. To relocate an electrical receptacle because of revised furniture
plans
Ans: The correct answer is D. Issuing a change order is the best
way to communicate a change to the construction documents
after the contract has been awarded.
P6 Contract Administration
At project closeout, what documentation MUST contain the
certification of flameproofing for finishes?
A. Maintenance manuals for furnishings and finishes
B. Guarantees or warranties for furnishings and finishes
C. Record documents for finish applications and furniture installations
D. Certificates of completion for finish applications and furniture
installations
Ans: The correct answer is B. Flameproofing would fall into the
category of guarantees and warranties as it would affect the
performance if the product as well as the product's warranty.
All rights reserved © 2025/ 2026 |
, Page |4
P4 Product and Material Coordination
Why are addenda issued?
A. To provide additional information not included in the bid package
B. To inform potential bidders about acceptable alternates
C. To obtain additional information
D. To request a change during construction
Ans: A. To provide additional information not included in the
bid package
What does an interior designer look for in a job site visit during
contract administration?
A. Conformance to safety procedures
B. Conformance to applicable codes
C. Compliance with contract documents
D. Compliance with the project schedule
All rights reserved © 2025/ 2026 |
NCIDQ IDPX Prep Exam Questions and
Correct Answers/ Latest Update / Already
Graded
Why does the HVAC system need to be balanced at the end of a
commercial project?
A. To verify that air quality levels are within the design specifications
B. To detect significant air leaks in the ductwork.
C. To adjust airflow at each device location to meet the criteria in the
engineer's design
D. To determine that each office is receiving the amount of outside air
required by the design
Ans: The correct answer is C. Balancing the HVAC system is the
process of measuring air flow from diffusers and making
adjustments to avoid hot and cold spots within a space. It does
not measure air quality, ductwork leaks or outside air.
P1 Project Coordination
The typical chronological order of system installation in new
commercial construction is:
All rights reserved © 2025/ 2026 |
, Page |2
A. HVAC, Plumbing, Electrical
B. Electrical, Plumbing, HVAC
C. Plumbing, HVAC, Electrical
D. Electrical, HVAC, Plumbing
Ans: The correct answer is C. Once the interior of a building is
sufficiently protected from the weather, the waste lines and
water supply lines of the plumbing system are installed and, if
specified, the pipes for the sprinkler system. The major part of
the work for the HVAC system is carried out, including the
installation of boilers, chillers, cooling towers, pumps, fans,
piping, and ductwork. Electrical, communications, and control
wiring are routed through the building.
P3 Building Systems and Integration
In which situation would an interior designer use a construction change
directive?
A. To request an electrical contractor not listed by the contractor in
the bid [tender] documents
B. To request pricing for an additional receptacle per the client's
request
All rights reserved © 2025/ 2026 |
, Page |3
C. To provide additional dimensions to the contractor regarding a
receptacle location
D. To relocate an electrical receptacle because of revised furniture
plans
Ans: The correct answer is D. Issuing a change order is the best
way to communicate a change to the construction documents
after the contract has been awarded.
P6 Contract Administration
At project closeout, what documentation MUST contain the
certification of flameproofing for finishes?
A. Maintenance manuals for furnishings and finishes
B. Guarantees or warranties for furnishings and finishes
C. Record documents for finish applications and furniture installations
D. Certificates of completion for finish applications and furniture
installations
Ans: The correct answer is B. Flameproofing would fall into the
category of guarantees and warranties as it would affect the
performance if the product as well as the product's warranty.
All rights reserved © 2025/ 2026 |
, Page |4
P4 Product and Material Coordination
Why are addenda issued?
A. To provide additional information not included in the bid package
B. To inform potential bidders about acceptable alternates
C. To obtain additional information
D. To request a change during construction
Ans: A. To provide additional information not included in the
bid package
What does an interior designer look for in a job site visit during
contract administration?
A. Conformance to safety procedures
B. Conformance to applicable codes
C. Compliance with contract documents
D. Compliance with the project schedule
All rights reserved © 2025/ 2026 |
