NCIDQ IDPX EXAM | INTERIOR DESIGN PROFESSIONAL EXAM
2026/2027 LATEST UPDATE | QUESTIONS AND VERIFIED ANSWERS
| GRADED A+
Occupancy group -
CORRECT|ANSWER
The minimum number of toilet fixtures for an interior design is determined by occupant load and?
Exit enclosures -
CORRECT|ANSWER
Where are flame spread ratings in a building the MOST restrictive
1 hour -
CORRECT|ANSWER
Exit access corridors in non-sprinklered buildings must have a rating of?
occupancy group, and the location in the building where finishes will be used -
CORRECT|ANSWER
When selecting interior partition finishes to meet flame spread standards, the MOST important
considerations are?
20 ft -
CORRECT|ANSWER
According to the IBC, dead-end corridors in unsprinklered buildings are limited to a maximum of?
aisle stairs -
CORRECT|ANSWER
According to the IBC, handrails in commercial construction are required along both sides of a
stairwell in all cases except?
kitchens -
CORRECT|ANSWER
, Exit routes may NEVER pass through?
Door swing and approach dimension -
CORRECT|ANSWER
When considering the initial space planning of an accessible toilet room, what design elements
should be of MOST concern?
Visual and audible alarms -
CORRECT|ANSWER
What are the MOST important design elements to incorporate into a hotel to provide safe egress for
physically disabled people?
the distance from finish floor slab to to finish floor slab -
CORRECT|ANSWER
What is included in the rise of a stair?
three 36 inch doors remotely located. (each provides 33 inches of exit width.) -
CORRECT|ANSWER
A designer has calculated that a total exit width of 8 ft is required from a store, according to IBC
standards. What combination of door widths would meet most existing requirements.
travel distance -
CORRECT|ANSWER in a 90,000 square foot single story building, what would be of greatest concern
in space planning?
The glass doors will have to be replaced with either solid, 20-minute rated doors or with 20-minute
rated doors with glass that is also rated 20 minutes. Because this will drastically change the
appearance of the entrance, this is the first thing the client should be told. -
CORRECT|ANSWER
A client has requested a new entry to her business, which is located in an old, unsprinklered
building. The current entrance consists of a pair of all glass doors mounted on floor closers. The
entrance opens onto a 1-hour rated building corridor. To conform to current IBC requirements, what
would the designer tell the client to expect regarding the new entrance?
2026/2027 LATEST UPDATE | QUESTIONS AND VERIFIED ANSWERS
| GRADED A+
Occupancy group -
CORRECT|ANSWER
The minimum number of toilet fixtures for an interior design is determined by occupant load and?
Exit enclosures -
CORRECT|ANSWER
Where are flame spread ratings in a building the MOST restrictive
1 hour -
CORRECT|ANSWER
Exit access corridors in non-sprinklered buildings must have a rating of?
occupancy group, and the location in the building where finishes will be used -
CORRECT|ANSWER
When selecting interior partition finishes to meet flame spread standards, the MOST important
considerations are?
20 ft -
CORRECT|ANSWER
According to the IBC, dead-end corridors in unsprinklered buildings are limited to a maximum of?
aisle stairs -
CORRECT|ANSWER
According to the IBC, handrails in commercial construction are required along both sides of a
stairwell in all cases except?
kitchens -
CORRECT|ANSWER
, Exit routes may NEVER pass through?
Door swing and approach dimension -
CORRECT|ANSWER
When considering the initial space planning of an accessible toilet room, what design elements
should be of MOST concern?
Visual and audible alarms -
CORRECT|ANSWER
What are the MOST important design elements to incorporate into a hotel to provide safe egress for
physically disabled people?
the distance from finish floor slab to to finish floor slab -
CORRECT|ANSWER
What is included in the rise of a stair?
three 36 inch doors remotely located. (each provides 33 inches of exit width.) -
CORRECT|ANSWER
A designer has calculated that a total exit width of 8 ft is required from a store, according to IBC
standards. What combination of door widths would meet most existing requirements.
travel distance -
CORRECT|ANSWER in a 90,000 square foot single story building, what would be of greatest concern
in space planning?
The glass doors will have to be replaced with either solid, 20-minute rated doors or with 20-minute
rated doors with glass that is also rated 20 minutes. Because this will drastically change the
appearance of the entrance, this is the first thing the client should be told. -
CORRECT|ANSWER
A client has requested a new entry to her business, which is located in an old, unsprinklered
building. The current entrance consists of a pair of all glass doors mounted on floor closers. The
entrance opens onto a 1-hour rated building corridor. To conform to current IBC requirements, what
would the designer tell the client to expect regarding the new entrance?
