NCCER Core Construction Drawings & Communication Skills 2 — Questions and Answers
Question 1: What does a dashed line typically represent on a construction floor plan?
- A load-bearing wall
- A hidden or overhead feature (Correct answer)
- An electrical circuit
- A property boundary
Correct answer: A hidden or overhead feature
Dashed lines on floor plans typically represent features above the cutting plane, such as overhead cabinets or beams.
In architectural drawings, dashed lines represent hidden features or elements above the cutting plane. Common examples include overhead cabinets, ceiling beams, skylights, and soffits. This convention follows ANSI/ASME standards where hidden lines use short, evenly spaced dashes.
Question 2: What is the purpose of a section view in construction drawings?
- To show the building from the street
- To reveal the internal structure by cutting through the building (Correct answer)
- To display only the roof plan
- To list the materials needed
Correct answer: To reveal the internal structure by cutting through the building
A section view shows the internal structure by depicting a vertical cut through the building.
Section views show wall construction, floor assemblies, roof structure, foundation details, ceiling heights, and how building systems relate vertically. They are referenced on floor plans with a section cut line labeled with letters or numbers.
Question 3: In construction communication, what does the acronym RFI stand for?
- Revised Floor Instruction
- Request for Information (Correct answer)
- Required Field Inspection
- Recorded Final Invoice
Correct answer: Request for Information
RFI stands for Request for Information, a formal process to clarify details in construction documents.
A Request for Information (RFI) is submitted when a contractor needs clarification about construction documents. RFIs are numbered, tracked, and become part of the project record. They are submitted to the architect or engineer who provides a written response.
Question 4: What scale is most commonly used for residential floor plans?
- 1/8" = 1'-0"
- 1/4" = 1'-0" (Correct answer)
- 1/2" = 1'-0"
- 1" = 1'-0"
Correct answer: 1/4" = 1'-0"
The 1/4" = 1'-0" scale is most commonly used for residential floor plans.
At 1/4" = 1'-0" scale (ratio 1:48), this provides a good balance between detail and fitting the plan on a standard sheet. Larger buildings may use 1/8" = 1'-0". Detail drawings use larger scales like 1/2" = 1'-0" or 3/4" = 1'-0".
Question 5: What type of drawing provides the most information about door and window sizes?
- Site plan
- Door and window schedule (Correct answer)
- Foundation plan
- Structural framing plan
Correct answer: Door and window schedule
Door and window schedules list all doors and windows with their sizes, types, materials, and hardware.
Schedules are organized tables that catalog building components. Door schedules include width, height, thickness, material, type, frame type, and hardware set. Window schedules list mark, size, type, material, and glazing specifications. Using schedules reduces clutter on drawings.
Question 6: Which of the following is a key rule of effective jobsite communication?
- Use technical jargon only experienced workers understand
- Deliver clear, concise messages and confirm understanding (Correct answer)
- Only communicate in writing
- Avoid asking questions to appear knowledgeable
Correct answer: Deliver clear, concise messages and confirm understanding
Effective communication requires clear, concise messages with confirmation of understanding.
Effective jobsite communication principles include: use clear language appropriate to the audience, confirm understanding by asking the receiver to repeat back critical information, use the appropriate method for the situation, and document important decisions. Active listening is equally important.
NCCER Core Construction Drawings & Communication Skills 2
What does a dashed line typically represent on a construction floor plan?