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NCIDQ practice questions

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Question 1Design Communication and Documentation

A floor plan is plotted at a scale of 1/4 inch = 1 foot. A wall measures 3 inches long on the plotted sheet. What is the actual length of the wall?

  1. 12 feet Correct answer.
  2. 6 feet
  3. 48 feet
  4. 9 feet

Explanation

At 1/4 inch = 1 foot, each quarter inch on the sheet represents one foot of real building. Three inches contains twelve quarter inches, so the wall is 12 feet long.

Question 2Design Communication and Documentation

In a floor plan drawn with a hierarchy of line weights, which element is drawn with the heaviest line?

  1. Walls cut by the cutting plane Correct answer.
  2. Dimension and extension lines for the plan
  3. Casework outlines
  4. Floor tile pattern

Explanation

Line weight expresses depth: elements closest to the viewer, meaning those cut by the imaginary cutting plane, receive the heaviest lines. Surfaces below the cut plane and annotation take progressively lighter weights.

Question 3Design Communication and Documentation

A section marker placed on a floor plan communicates which two pieces of information?

  1. The drawing scale and the north arrow
  2. The structural grid and the column size
  3. The finish schedule and the room finish number
  4. The view direction and the sheet number Correct answer.

Explanation

A section marker shows the location of the cutting plane, arrows giving the direction of view, and a reference to the sheet and detail number where the section is drawn. Both the direction and the cross-reference are needed to use the section.

Question 4Design Communication and Documentation

According to conventional drafting practice, dimension lines are drawn:

  1. Medium and broken at each dimension figure
  2. Thin and continuous, with arrowheads at both ends Correct answer.
  3. Heavy and continuous, with arrowheads at both ends
  4. Heavy and dashed, with the figure below the line

Explanation

Dimension lines are drawn thin and unbroken so they remain subordinate to the building geometry they describe. Arrowheads or tick marks terminate each end, and the dimension figure sits above the line.

Question 5Design Communication and Documentation

Which item is normally found in the title block of every construction drawing sheet?

  1. The subcontractor's shop drawing stamp
  2. The manufacturer's product data
  3. The contractor's accepted bid amount
  4. The sheet title, number, and scale Correct answer.

Explanation

The title block identifies the project, the sheet title and number, the scale, the issue date, and often the design professional's seal. It is the primary means of controlling and referencing each sheet in a set.

Question 6Design Communication and Documentation

A door schedule typically lists, for each door, its mark, size, type, frame, and:

  1. Lighting fixture type in the room
  2. Hardware set and fire rating Correct answer.
  3. Paint color of the adjacent wall
  4. Acoustical ceiling panel above

Explanation

The door schedule is the index that links each door tag on the plans to its size, material, frame, hardware group, and required fire rating. It lets the contractor order and install doors without reading each opening individually.

Question 7Design Communication and Documentation

MasterFormat organizes specifications primarily by:

  1. Work results grouped into numbered divisions Correct answer.
  2. Construction sequence and trade bid packages
  3. Alphabetical order of material names
  4. Building floor level, from lowest to highest

Explanation

MasterFormat groups requirements by work result, such as concrete, metals, or finishes, each assigned a numbered division and section number. This arrangement lets any project team member locate a specification section by the type of work rather than by trade or sequence.

Question 8Design Communication and Documentation

A reflected ceiling plan is drawn as though the ceiling were viewed:

  1. From the floor looking up, in true perspective
  2. From above, mirrored at the ceiling plane Correct answer.
  3. In section, cut through the ceiling plenum
  4. From eye level at the room's main entry

Explanation

In a reflected ceiling plan the cutting plane is above the ceiling and the resulting view is flipped down onto the floor plane. This keeps ceiling features in the same left-right orientation as the floor plan so the two sheets align when read together.

Question 9Design Communication and Documentation

A detail is drawn at 3 inches = 1 foot. How long does a 2-inch-wide actual element appear on the drawing?

  1. 1-1/2 inches
  2. 8 inches
  3. 6 inches Correct answer.
  4. 2/3 inch

Explanation

A scale of 3 inches = 1 foot is an enlargement of three times actual size. Multiplying the 2-inch element by 3 gives 6 inches on the sheet.

Question 10Design Communication and Documentation

In a building section, work located beyond the cutting plane is shown:

  1. With dashed lines to show hidden edges
  2. Omitted entirely to avoid clutter
  3. With lighter line weights, in elevation Correct answer.
  4. With heavier line weights than the cut work

Explanation

The section convention is the same as the plan convention: elements cut by the plane get the heaviest lines, and elements seen beyond it are drawn in elevation with progressively lighter weights. This depth hierarchy is what makes the drawing readable.

Question 11Design Communication and Documentation

During construction, the contractor finds that the reflected ceiling plan shows a light fixture where a structural beam occurs. The correct first step is to:

  1. Issue a change order to relocate the beam
  2. Submit an RFI to the architect for direction Correct answer.
  3. Revise the ceiling plan and proceed
  4. Install the fixture in the nearest open ceiling bay

Explanation

A conflict between documents is resolved through the request for information process so the design professional can issue a directed solution. The contractor must not proceed on an unresolved conflict or make design decisions in the field.

Question 12Design Communication and Documentation

Shop drawings are best described as drawings that:

  1. Record as-built conditions after installation
  2. Establish the design intent drawn by the architect
  3. Transfer design responsibility to the fabricator
  4. Detail fabrication and installation methods Correct answer.

Explanation

Shop drawings are prepared by the contractor, fabricator, or supplier to show how a component will actually be made and installed. Review by the design professional confirms conformance with the design concept but does not shift design responsibility.

Question 13Design Communication and Documentation

A cloud drawn on a construction drawing sheet indicates:

  1. An area requiring field verification by the contractor
  2. A detail to be enlarged on another sheet
  3. An area of the drawing that has been revised Correct answer.
  4. A portion of work deleted from the contract

Explanation

Revision clouds enclose the changed portion of the drawing, and a nearby triangle carries the revision number. That number matches the entry in the sheet's revision block and on the revision index so changes can be tracked.

Question 14Design Communication and Documentation

In a standard sheet numbering system, sheet A-201 most likely contains:

  1. The first architectural detail sheet
  2. Architectural specifications for division 2
  3. Elevations from the second floor up
  4. The second sheet of architectural plans Correct answer.

Explanation

The letter identifies the discipline and the first digit identifies the series, with 2 conventionally used for plans. The final digits sequence the sheets within that series, so A-201 is the second plan sheet.

Question 15Design Communication and Documentation

A break line is used on a drawing to:

  1. Show the full extent of a demolition area on the plan
  2. Shorten a long uniform element to fit the sheet Correct answer.
  3. Separate two adjacent finish materials
  4. Indicate a change in the drawing scale

Explanation

A break line shows that a repetitive or uniform portion has been removed so the drawing fits the sheet at a useful scale. The interruption is conventional and does not imply that anything is missing from the built work.

Question 16Design Communication and Documentation

Under standard general conditions of contract, the drawings and specifications are:

  1. Ranked, with drawings governing in all cases
  2. Ranked, with specifications governing in all cases
  3. Independent, with each read only within its own scope
  4. Complementary, so one requires what both require Correct answer.

Explanation

Standard general conditions make the drawings and specifications complementary, so work required by one is as binding as if required by both. Neither document is inherently superior; a conflict is reported to the design professional for resolution.

Question 17Design Communication and Documentation

A life safety plan in a construction drawing set typically shows:

  1. Structural framing and member sizes
  2. Ceiling grid and lighting fixture layout on the plan
  3. Furniture layout and power locations
  4. Exit access, exit locations, and rated separations Correct answer.

Explanation

Life safety plans identify the means of egress, including exit access paths, exit stairs and doors, and the fire-rated walls and enclosures that protect them. They are used by plan reviewers and code officials to confirm compliance.

Question 18Design Communication and Documentation

The purpose of a key plan on a drawing sheet is to:

  1. Show the drawing revisions in the order they were issued
  2. Locate the drawn area within the whole building Correct answer.
  3. List the symbols used on the sheet
  4. Key the sheet to the specification sections

Explanation

A key plan is a small-scale diagram that shows where the subject of the sheet sits in the overall building or project. It orients readers when a sheet covers only one area, floor, or enlarged portion.

Question 19Design Communication and Documentation

An addendum to the construction documents is normally issued:

  1. By a subcontractor during the shop drawing review
  2. Only when the owner changes the contract sum
  3. During bidding to clarify or modify the documents Correct answer.
  4. After final completion to record all field changes

Explanation

Addenda are issued during the bidding phase to clarify, correct, or modify the bidding documents and become part of the contract documents. Bidders must acknowledge each addendum in their proposal.

Question 20Design Communication and Documentation

As-built drawings are prepared by the contractor to:

  1. Serve as the architect's official design record set
  2. Establish the code compliance of the completed design
  3. Replace the contract drawings at project closeout
  4. Record field changes and actual installed conditions Correct answer.

Explanation

As-built or record drawings carry the contractor's field markup of changes, substitutions, and actual locations of concealed work. They are a record of what was installed, not a reissued contract document, and the design professional does not warrant their accuracy.

Question 21Design Communication and Documentation

Architectural woodwork such as a built-in reception desk is specified in which MasterFormat division?

  1. Division 12, covering furnishings and decorative accessories
  2. Division 05, covering metal fabrications and stairs
  3. Division 09, covering interior finishes and gypsum board
  4. Division 06, covering woodwork and plastics Correct answer.

Explanation

Architectural woodwork falls under Division 06, historically section 06 40 00 Architectural Woodwork, which covers custom casework and millwork. Division 12 covers furnishings that are generally manufactured and movable rather than built in.

Question 22Design Communication and Documentation

A plan drawn at 1/8 inch = 1 foot is reduced to 50 percent on a copy machine. On the reduced copy, a wall measures 3/4 inch. What is the actual wall length?

  1. 12 feet Correct answer.
  2. 24 linear feet
  3. 48 feet
  4. 6 feet

Explanation

Reducing the sheet by half halves the graphic scale to 1/16 inch = 1 foot. Three-quarters of an inch contains twelve sixteenths, so the wall is 12 feet long, which also equals the 1-1/2 inches it measured on the original.

Question 23Design Communication and Documentation

A detail is drawn to scale, but a written dimension on it conflicts with the measurement taken by scaling the drawing. Which governs?

  1. The scaled measurement, since it is drawn to scale
  2. Neither; the detail must be reissued before use
  3. The written dimension, which takes precedence Correct answer.
  4. The larger of the two values, to be conservative

Explanation

Construction documents are dimensioned so that written figures govern and scaling is only for reference, which is why sheets carry a do-not-scale warning. Reproduction, paper stretch, and plotting error all make scaled measurements unreliable.

Question 24Design Communication and Documentation

A specification section that names a single manufacturer's product with no approved equal is called:

  1. A reference standard specification
  2. A descriptive specification with named products
  3. A closed or proprietary specification Correct answer.
  4. A performance specification

Explanation

A closed, or proprietary, specification limits acceptable products to those of one named manufacturer, often justified where a specific appearance or fit is required. Open specifications name a basis-of-design product but permit substitutions that meet the stated criteria.

Question 25Design Communication and Documentation

In a federated BIM model, clash detection is used primarily to:

  1. Convert the model into two-dimensional contract drawings
  2. Verify that the model meets the energy code
  3. Find physical conflicts among discipline models early Correct answer.
  4. Estimate the construction cost of each building system

Explanation

Clash detection compares the architectural, structural, and MEP models to identify elements occupying the same space before construction. Resolving those conflicts in the model is far less costly than resolving them in the field.

Question 26Design Communication and Documentation

In a floor plan drawing, which element is conventionally drawn with the heaviest line weight?

  1. The dashed door swing arcs
  2. The ceiling grid pattern above
  3. The walls cut by the section plane Correct answer.
  4. The furniture layout within the rooms

Explanation

Standard practice assigns the heaviest line weight to elements the cutting plane passes through, so cut walls read as the nearest and most solid elements. Anything not cut, such as door swings or ceiling features, is drawn with lighter weights so the drawing reads clearly.

Question 27Design Communication and Documentation

A north arrow placed on a floor plan primarily communicates the:

  1. Plan's orientation relative to north Correct answer.
  2. Direction of site drainage away from the building
  3. Location of the building's main entrance
  4. Direction of prevailing winds at the site

Explanation

The north arrow relates the plan's orientation to a defined north so readers can compare the drawing with the site and with other sheets. It is a reference symbol only.

Question 28Design Communication and Documentation

Dimension strings are placed on a drawing so that the reader can determine:

  1. True sizes regardless of reproduction Correct answer.
  2. The order of construction
  3. The finish of adjacent materials
  4. The scale factor used

Explanation

Dimensions state the intended size of the work, so they govern over scaling and stay correct no matter how the sheet is enlarged or reduced. Scale is a separate reference used only for rough checks.

Question 29Design Communication and Documentation

An interior elevation drawing shows:

  1. A horizontal slice through a room at door height
  2. The building's exterior facade in orthographic projection
  3. The ceiling plane reflected downward onto the floor
  4. One vertical surface with heights dimensioned Correct answer.

Explanation

An interior elevation is an orthographic projection of a single vertical room surface, showing heights, vertical dimensions, and the arrangement of elements on that face. It is not a horizontal cut, a reflected ceiling view, or an exterior view.

Question 30Design Communication and Documentation

A small triangle containing the number 3 is placed beside a changed note on a sheet. This symbol indicates that the change:

  1. Was approved by three consultants
  2. Was issued on the third of the month
  3. Corresponds to revision 3 Correct answer.
  4. Occurs three times on that sheet

Explanation

Revision symbols key a change on the sheet to a matching entry in the revision block, which records the revision number, date, and description. The number inside the triangle is the revision identifier.

Question 31Design Communication and Documentation

The drawing index on a set's cover sheet is most useful for:

  1. Recording the contractor's requests for information
  2. Stating the code occupancy classification
  3. Finding the sheet where a drawing is located Correct answer.
  4. Listing the products used in each room

Explanation

The drawing index lists every sheet in the set with its number and title, so a reader can go straight to the sheet that contains a particular drawing type. Other project data appears elsewhere in the set.

Question 32Design Communication and Documentation

A drafter encounters an unfamiliar symbol on a consultant's sheet. The most reliable place to identify it is:

  1. The structural general notes
  2. The project manual's specification sections
  3. The contractor's shop drawing submittal
  4. The drawing's symbol legend Correct answer.

Explanation

Each drawing set carries a legend that defines the symbols and abbreviations used on its sheets. The legend is the authoritative source for interpreting unfamiliar graphic symbols.

Question 33Design Communication and Documentation

A room finish schedule typically lists, for each room, the:

  1. Door hardware sets and keying
  2. Light fixture types and lamp wattages
  3. Furniture inventory and upholstery
  4. Floor, base, wall, and ceiling finishes Correct answer.

Explanation

A room finish schedule is organized room by room and records the selected floor, base, wall, and ceiling finishes, usually by code tied to a finish legend. Other building elements are documented in their own schedules.

Question 34Design Communication and Documentation

A detail callout bubble shows a detail number above a horizontal line and a sheet number below it. The sheet number tells the reader:

  1. The revision that added the detail
  2. Where to find the referenced detail Correct answer.
  3. The scale at which the detail is drawn
  4. The date the detail was issued

Explanation

The detail callout bubble pairs a detail number with a sheet reference, and the sheet number tells the reader which sheet to turn to for the enlarged detail. The other information is recorded elsewhere on the sheet.

Question 35Design Communication and Documentation

Why is a graphic scale bar preferable to a written scale notation on a drawing that may be reproduced at different sizes?

  1. It indicates the drawing's north orientation
  2. It shows the drawing's place in the sheet series
  3. It lists the dimensions of every room
  4. It stays accurate at any copy size Correct answer.

Explanation

A graphic scale is drawn as part of the sheet, so it shrinks or grows with the drawing and remains valid at any reproduction size. A written ratio becomes wrong once the sheet is resized.

Question 36Design Communication and Documentation

Compared with schematic design drawings, design development drawings typically include:

  1. Resolved plans, elevations, and material choices Correct answer.
  2. A complete set of construction details and specifications
  3. Only bubble diagrams and area totals
  4. The contractor's final as-built conditions

Explanation

Design development drawings advance the schematic concept into a more resolved design, with dimensioned plans, developed elevations, and preliminary material and system selections. Construction details and specifications come later.

Question 37Design Communication and Documentation

A keynote system uses numbered leaders that refer to a legend. Its main advantage is that it:

  1. It replaces the need for specifications
  2. It eliminates the need for dimensions
  3. It shows the drawing's scale
  4. It reduces repeated text on the sheet Correct answer.

Explanation

Keynotes replace long written notes with numbered leaders tied to a legend, cutting clutter and keeping the sheet legible. They supplement, rather than replace, dimensions and specifications.

Question 38Design Communication and Documentation

Under SectionFormat, a specification section is organized into which three parts?

  1. General, Products, Execution Correct answer.
  2. Scope, Schedule, Budget
  3. Design, Bidding, Construction
  4. Summary, Submittals, Closeout

Explanation

SectionFormat organizes each specification section into Part 1 General, Part 2 Products, and Part 3 Execution. Administrative and procedural requirements belong in Part 1, products and materials in Part 2, and installation in Part 3.

Question 39Design Communication and Documentation

In a BIM model, an element modeled to LOD 300 is best described as:

  1. A field-verified element matching as-built conditions
  2. A coordinated element with defined size Correct answer.
  3. A symbolic representation used only for diagrams
  4. A generic placeholder with approximate size

Explanation

LOD 300 describes elements modeled specifically enough to be measured and coordinated, with defined size, shape, and location. Generic placeholders belong to lower levels of development, and field verification belongs to the highest.

Question 40Design Communication and Documentation

A section cut line drawn across a floor plan has arrow-shaped flags at each end. The flags point:

  1. Toward the part of the building that is omitted
  2. In the direction the section is viewed Correct answer.
  3. Toward the nearest exit
  4. Away from the viewer of the section

Explanation

The flags on a section cut line point in the direction the viewer looks, so the resulting section shows what lies ahead of the cut. The cut line and flags together establish both where the building is cut and which way the view faces.

Question 41Construction, Materials, and Specifications

In MasterFormat, which division covers concrete work?

  1. Division 09 (Finishes)
  2. Division 22 (Plumbing)
  3. Division 03 Correct answer.
  4. Division 05 (Metals)

Explanation

MasterFormat organizes work results into numbered divisions; Division 03 is Concrete, Division 05 is Metals, Division 09 is Finishes, and Division 22 is Plumbing. Specifiers use these division numbers to organize and cross-reference specification sections.

Question 42Construction, Materials, and Specifications

Which gypsum board product is specified where a partition must achieve a one-hour fire-resistance rating?

  1. Perforated acoustic board
  2. Regular gypsum board
  3. Type X gypsum board Correct answer.
  4. Moisture-resistant gypsum board

Explanation

Type X board contains glass fibers and other additives in the core that greatly improve fire performance in tested assemblies. Regular board has no enhanced fire core, and moisture-resistant or acoustic boards are selected for other properties.

Question 43Construction, Materials, and Specifications

Which paint sheen provides the greatest scrub and stain resistance on interior walls?

  1. Matte
  2. Eggshell
  3. Flat
  4. Gloss Correct answer.

Explanation

Higher-sheen paints contain a greater proportion of binder resin, which forms a tighter, smoother film that resists scrubbing and staining. Flat and matte finishes have high pigment and low binder, so they burnish and hold soil more readily.

Question 44Construction, Materials, and Specifications

Which nominal grid module produces a square lay-in acoustical ceiling layout?

  1. 2 × 2 ft Correct answer.
  2. 1 × 4 ft
  3. 600 × 1200 mm
  4. 2 × 4 ft

Explanation

A 2 × 2 ft module (600 × 600 mm) yields square tiles and a square grid pattern. The 2 × 4 ft module and its metric equivalent, 600 × 1200 mm, produce rectangular tiles.

Question 45Construction, Materials, and Specifications

Which upholstery abrasion test uses a linear back-and-forth motion and reports results in double rubs?

  1. ASTM E84
  2. Martindale
  3. Wyzenbeek Correct answer.
  4. Taber

Explanation

The Wyzenbeek test rubs a fabric with a standard abradant in a straight back-and-forth motion and records the number of double rubs before failure. Martindale uses a circular figure-eight motion, while Taber and ASTM E84 measure other properties entirely.

Question 46Construction, Materials, and Specifications

Which panel product is made of wood fibers bonded with resin and offers a dense, uniform edge for painted cabinet doors?

  1. Oriented strand board
  2. MDF Correct answer.
  3. Plywood
  4. Lumber-core plywood

Explanation

Medium-density fiberboard is composed of fine wood fibers bonded with resin under heat and pressure, giving a homogeneous, smooth surface and edge. Plywood and lumber-core panels show veneer or core lines at edges, and oriented strand board has a coarse, flake texture.

Question 47Construction, Materials, and Specifications

Which hardware item is required on egress doors serving a large assembly space?

  1. Kick plate
  2. Automatic door closer
  3. Panic hardware Correct answer.
  4. Door stop and bumper

Explanation

Egress doors in assembly occupancies must release with a single operation and no key, special knowledge, or effort, which is the function of panic hardware. Closers, kick plates, and stops serve durability or closing functions but do not provide the required release.

Question 48Construction, Materials, and Specifications

Which document is issued during the bidding period to clarify or change the bidding documents?

  1. Construction change directive
  2. Change order
  3. Request for information
  4. Addendum Correct answer.

Explanation

An addendum is issued before bids are opened to modify or interpret the bidding documents, and it becomes part of the contract documents. Change orders and construction change directives are issued after the contract is executed, and an RFI is only a question.

Question 49Construction, Materials, and Specifications

Which single-number rating expresses how much sound a material absorbs within a room?

  1. Impact insulation class rating
  2. Noise reduction coefficient Correct answer.
  3. Ceiling attenuation class value
  4. Sound transmission class rating

Explanation

The noise reduction coefficient averages absorption across the speech-frequency bands and is expressed from 0 to 1. Sound transmission class rates how well a partition blocks airborne sound, ceiling attenuation class rates plenum flanking, and impact insulation class rates footfall noise.

Question 50Construction, Materials, and Specifications

A specification states the required results and leaves selection of products and methods to the contractor. This is best described as which type of specification?

  1. Descriptive specification
  2. Proprietary specification
  3. Performance specification Correct answer.
  4. Prescriptive specification

Explanation

A performance specification sets measurable results, such as a fire rating or sound level, and lets the contractor choose the means to achieve them. Prescriptive, descriptive, and proprietary specifications instead dictate products, materials, or methods.