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NCIDQ IDPX Actual Exam Questions and Answers 2025
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NCIDQ IDPX Actual Exam Questions and Answers 2025
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1NCIDQ IDPX Actual Exam Questions and Answers 2025
In regard to interior design, what is a guard, and what dimension must it have in
commercial construction? - ANSWERThis is a building component installed to prevent
falls from an elevated area. Its required minimum heights 42" AFF
What is fire resistance-rated glazing? - ANSWERThis is glass or some other glazing
material that has been tested according to ASTM E119 as part of a fire-resistance-rated
wall assembly
How many construction types are there, and which has the highest fire resistance? -
ANSWERThe are five, and Type I has the highest fire resistance
What is an incidental use area? - ANSWERThis is an area that is ancillary to the main
occupancy but has the same classification. It must be separated from the main
occupancy by a fire barrier, be equipped with an automatic sprinkler system, or both
What is an accessory occupancy? - ANSWERThis is a space or room that is used in
conjunction with the main occupancy, but containing no more than 10% of the floor area
of the main occupancy
What is mixed occupancy? - ANSWERThis is a situation where a single building or
interior space houses two or more different types of occupancies
What material does NFPA 701 test and what condition does it test for? - ANSWERThis
tests the flammability or draperies, curtain, and other window treatments
According to the International Building code (IBC), what is a fire partition, and where is it
used? - ANSWERThe IBC defines this as a wall assembly having a fire-resistance
rating of 1 hour, used in:
-walls separating dwelling units
-walls separating guest rooms in Group R-1, R-2, and I-I occupancies
-walls separating tenant spaces in covered malls
-corridor walls
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What is the maximum percentage of wall or ceiling area that combustible trim (such as
trim made of wood) can occupy a room? - ANSWERIN a room, this material can occupy
no more than 10% of a wall or ceiling area
What is occupancy class, and what is it used for? - ANSWERThis is a usage
classification assigned to a building or interior space. It differentiates various types of
fire hazards and the life safety characteristics of various users
What is the primary model building code in the United States? - ANSWERThe
International Building Code (IBC)
What u=is a design concept? - ANSWERThis is an idea or statement concerning an
overall physical response to ideas developed during programming
In regard to interior design, what is substantial completion? - ANSWERIn a construction
project, this is the stage when the work or a designated portion of it, is sufficiently
complete according to the contract documents that the owner can occupy or use the
site, even though a few minor items may yet need to be finished or corrected
What are four common ways to install fabric wall covering? - ANSWERThis is
commonly installed in one of four ways:
-applied directly using an adhesive
-using custom fabric panels
-using a proprietary stretch wall system
-using acoustic panels
What are five common types of resilient flooring? - ANSWERFive common types are:
-vinyl
-vinyl composition
-rubber
-cork
-linoleum
What is lacquer? - ANSWERThis is a coating material with a high nitrocellulose content
that has been modified with resins and plasticizers dissolved in a volatile solvent
What is running trim? - ANSWERThis type of molding is installed end to end
In commercial construction, what is the maximum height of a stair riser, and what is the
minimum depth of a stair tread? - ANSWERThe maximum height of the former is 7 in,
and the minimum depth of the latter is 11 in
What is the minimum clear width of an exit door? - ANSWERThe minimum clear width is
32"
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What is the maximum allowable projection of a door into a corridor when the door is fully
opened? - ANSWERThe maximum allowable projection is 7"
For an occupant load greater than 50, what is the absolute minimum corridor width? -
ANSWERIn this instance, the minimum corridor width is 44 in
How is minimum exit width calculated? - ANSWERThis is calculated by multiplying the
occupant load of a space by the appropriate factor given in the building code
What is a performance bond? - ANSWERThis is a statement by a surety company that
obligates the surety company to complete construction of the owners project if the
contractor defaults
What four tasks does the interior designer normally perform during the schematic
design phase of a project? - ANSWERDuring this phase of a project, the designer:
-prepares diagrams and drawings showing the general functional relationships required
by the project
-develops preliminary space plans
-prepares design concepts, including colors, finishes, and furniture
-prepares a preliminary statement of probable project costs
Under what conditions can a contractor propose substitutions during bidding? -
ANSWERBidders must request written approval of these at least 10 days before bid
opening. The request must include documentation showing that the proposal meets the
requirements of the contract documents
What are shop drawings? - ANSWERThese are detailed drawings, diagrams, and other
data, prepared by the subcontractor or supplier, that show exactly how the provider
intends to supply and install work to meet the contract requirements. They are
submitted to the contractor and interior designer for approval.
What is an addendum? - ANSWERThis is a written or graphic document issues by the
interior designer before the execution of the contract that modifies or interprets the
bidding documents by additions, deletions, clarifications, or corrections
What is a change order? - ANSWERThis is a form used to authorize a change in
contract time, contract cost, or both, made after the execution of the contract. It is
generally prepared by the interior designer and must be signed by the designer,
contractor, and owner.
Who has the authority to reject work that does not conform the the contract documents?
- ANSWERThe interior designer can reject work that does not conform to these
What are seven of the items the contractor must submit to the owner during project
closeout - ANSWERDuring this phase of a project, the contractor must give the owner:
-the bonds
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