NCIDQ IDPX Prep Exam Questions and
Answers 100% Solved | Graded A+
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 - ✔✔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
1
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,The typical chronological order of system installation in new commercial
construction is:
A. HVAC, Plumbing, Electrical
B. Electrical, Plumbing, HVAC
C. Plumbing, HVAC, Electrical
D. Electrical, HVAC, Plumbing - ✔✔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?
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,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
C. To provide additional dimensions to the contractor regarding a
receptacle location
D. To relocate an electrical receptacle because of revised furniture plans -
✔✔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
3
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, D. Certificates of completion for finish applications and furniture
installations - ✔✔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.
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 - ✔✔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
4
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
Answers 100% Solved | Graded A+
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 - ✔✔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
1
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,The typical chronological order of system installation in new commercial
construction is:
A. HVAC, Plumbing, Electrical
B. Electrical, Plumbing, HVAC
C. Plumbing, HVAC, Electrical
D. Electrical, HVAC, Plumbing - ✔✔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?
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,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
C. To provide additional dimensions to the contractor regarding a
receptacle location
D. To relocate an electrical receptacle because of revised furniture plans -
✔✔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
3
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, D. Certificates of completion for finish applications and furniture
installations - ✔✔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.
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 - ✔✔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
4
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
