CDT Blueprint Reading & Specifications 2 — Questions and Answers
Question 1: On a construction drawing, what does a dashed hidden line represent?
- A feature visible from the current view
- A feature that exists behind or below the current surface (Correct answer)
- A centerline of symmetry
- A future planned addition
Correct answer: A feature that exists behind or below the current surface
Hidden lines (dashed) indicate edges or features not directly visible from the current view angle.
Question 2: In a specifications document, Division 03 of CSI MasterFormat covers which trade?
- Masonry
- Concrete (Correct answer)
- Metals
- Wood and Plastics
Correct answer: Concrete
CSI MasterFormat Division 03 is dedicated to Concrete work.
Question 3: What does the abbreviation 'NTS' mean on a drawing?
- Not To Scale (Correct answer)
- No True Section
- North-To-South
- Not Technically Specified
Correct answer: Not To Scale
NTS stands for Not To Scale, indicating the drawing element should not be measured directly.
Question 4: A revision cloud on a blueprint drawing indicates:
- An area that requires demolition
- A region where changes were made since the previous issue (Correct answer)
- A cloudy or unclear detail requiring clarification
- An area outside the project scope
Correct answer: A region where changes were made since the previous issue
Revision clouds highlight areas of the drawing that have been modified from a previous revision.
Question 5: Which section view shows a cut taken at a non-continuous or angled path to reveal features that would otherwise be missed?
- Full section
- Half section
- Offset section (Correct answer)
- Removed section
Correct answer: Offset section
An offset section changes direction to pass through features that don't lie on a single straight cutting plane.
Question 6: On architectural drawings, what does a circle with a letter/number combination in a wall or floor plan typically indicate?
- A column grid reference
- A detail callout referencing a larger-scale drawing (Correct answer)
- A door schedule number
- A room finish code
Correct answer: A detail callout referencing a larger-scale drawing
A circle with a detail reference number/letter points the reader to a larger-scale detail drawing for that area.
Question 7: What is the primary purpose of a title block on engineering drawings?
- To provide decorative framing for the drawing
- To record project, revision, scale, and approval information (Correct answer)
- To show the north arrow orientation
- To list all materials used in the project
Correct answer: To record project, revision, scale, and approval information
The title block contains essential administrative data including project name, drawing number, date, scale, and signatures.
CDT Blueprint Reading & Specifications 2
On a construction drawing, what does a dashed hidden line represent?