NCCER CORE Reading Construction Drawings Questions and Answers 1 — Questions and Answers
Question 1: An architectural drawing has a scale of 1/4" = 1'-0". If a wall measures 3 1/2 inches on the drawing, what is its actual length?
- 7 feet
- 3 feet 6 inches
- 8 feet
- 14 feet (Correct answer)
Correct answer: 14 feet
The scale 1/4" = 1'-0" means every quarter-inch on the drawing represents one foot in reality. Since there are four quarter-inches in one inch, one inch on the drawing represents four feet. Therefore, 3.5 inches multiplied by 4 feet/inch equals 14 feet.
Question 2: On a construction drawing, which type of line, typically shown as a series of short dashes, is used to represent an object or edge that is not visible in the current view?
- Object line
- Hidden line (Correct answer)
- Center line
- Dimension line
Correct answer: Hidden line
A hidden line, which is a series of short dashes, is used to show edges, surfaces, or corners of an object that are hidden from view. Object lines are solid and represent visible edges. Center lines indicate the center of a symmetrical object. Dimension lines show the size of an object.
Question 3: Where on a construction drawing would you typically find essential identifying information such as the project title, drawing number, date, and architect's name?
- Title block (Correct answer)
- Legend
- Revision block
- General notes
Correct answer: Title block
The title block, usually located in the bottom right-hand corner of the drawing, contains all the primary identifying information for that specific drawing sheet, including the project name, sheet title, drawing number, scale, date, and the names of the firms involved.
Question 4: A framing crew needs to determine the finished exterior appearance of a building, including the types of siding, window styles, and final roof height. Which type of drawing should they consult for this information?
- Floor plan
- Foundation plan
- Elevation drawing (Correct answer)
- Section drawing
Correct answer: Elevation drawing
An elevation drawing provides a two-dimensional view of a building's exterior from one side (e.g., North, South, East, West). It shows the finished appearance, materials, and vertical height dimensions, making it the correct choice for viewing siding, windows, and roof height.
Question 5: In an architectural floor plan, what does a symbol showing a single line swinging in an arc from a wall opening typically represent?
- A sliding glass door
- A fixed window
- A bifold door
- A hinged door (Correct answer)
Correct answer: A hinged door
The standard architectural symbol for a hinged door is a straight line representing the door itself, with a curved arc showing the direction and path of its swing. This distinguishes it from symbols for other types of doors like sliding or bifold doors.
Question 6: On a large commercial floor plan, what is the primary purpose of the grid system, which is typically identified by letters along one axis and numbers along the other?
- To calculate the total square footage of the building
- To provide reference points for locating specific features like columns or walls (Correct answer)
- To indicate the direction of True North
- To show the various scales used on the drawing
Correct answer: To provide reference points for locating specific features like columns or walls
A grid line system is used on large drawings to create a coordinate system. By referencing a letter and a number (e.g., Column C-5), users can quickly and accurately locate specific structural elements, rooms, or equipment without having to scan the entire drawing.
NCCER CORE Reading Construction Drawings Questions and Answers 1
An architectural drawing has a scale of 1/4" = 1'-0".
If a wall measures 3 1/2 inches on the drawing, what is its actual length?