CD Cheat Sheet 2026

The 30 highest-yield CD facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Which GD&T symbol is used to indicate a feature must be perfectly round? → Circularity
2. What is a partial auxiliary view? → A view limited to only the inclined surface in true shape, omitting the rest of the object
3. During a risk management & mitigation audit, which documentation is most critical to have readily available? → Conducting root cause analysis to identify underlying systemic issues
4. The revision history block on a drawing must record, at minimum, the revision letter, date, description of change, and: → Approval authority for the change
5. An employer asks a drafter to use a single licensed seat of CAD software on five workstations by sharing a cracked activation. Ethically, the drafter should: → Refuse to participate and raise the software licensing violation with management
6. A drafter times their work on two clients' projects and bills the same hours to both clients. This practice is: → Double billing, a fraudulent and unethical practice
7. What is the standard angle for section lines (hatch lines) in a technical drawing per ASME convention? → 45°
8. What is the primary purpose of technical drawing in drafting? → To communicate precise design specifications
9. Why is scale important in blueprint reading? → To represent dimensions accurately
10. What is the purpose of annealing a metal part? → To relieve internal stresses and improve ductility
11. In an aligned section, how are asymmetrically placed features (such as holes or ribs at an angle) treated? → They are rotated (aligned) to the cutting plane before projecting to the section view
12. On a drawing, the note 'ASTM A36' refers to: → A structural carbon steel specification
13. What is the purpose of layers in CAD software? → To organize elements for better management
14. Which GD&T symbol represents the allowable variation in the form of a surface? → Flatness
15. Which practice best prevents fabrication from an outdated drawing revision? → A controlled document distribution system that recalls superseded prints
16. Which communication practice best supports coordination between drafting and other disciplines like structural and MEP? → Regularly scheduled coordination meetings with shared model or drawing reviews
17. Which document defines the default tolerances applied to dimensions that have no tolerance explicitly stated? → The title block or general tolerance note
18. What is the primary benefit of using GD&T in engineering drawings? → To ensure precise manufacturing and consistency
19. Which command in CAD software is used to create a copy of an object? → COPY
20. In a piping or mechanical system drawing, what does a 'P&ID' stand for? → Piping and Instrumentation Diagram
21. A customer specification requires ISO drawing standards, but the company template uses ASME. What should the drafter do? → Follow the contractually required customer standard or obtain a documented deviation
22. A drafter realizes a client's requested change would violate the local building code. The client insists the change be drawn anyway. The drafter should: → Refuse to draw the non-compliant change and notify the responsible design professional
23. Which practice best prevents misinterpretation when sending CAD files to an external consultant? → Including a transmittal noting file versions, units, layer standards, and intended use
24. A drafter lists 'AutoCAD Certified Professional' on their resume even though they never passed the exam. This is best described as: → Misrepresentation of qualifications, an ethics violation
25. When writing drawing notes intended for field crews, the drafter should prioritize: → Clear, concise, imperative language using standard terminology
26. A dimension is changed on the model but not updated on a manually annotated drawing view. This discrepancy is best caught by: → Verifying drawing annotations against the current model before release
27. What is the recommended frequency for reviewing and updating drafter technical drawing & drafting standards protocols? → Monitoring outcomes through regular data collection and trend analysis
28. What information is typically found in the title block of a blueprint? → Drawing title, scale, and project details
29. In the context of drafter, which principle most directly governs drafter blueprint reading & interpretation practices? → Applying evidence-based methodologies with peer-reviewed support
30. Which conventional break symbol is used to indicate a long uniform cylindrical shaft or rod is shortened on the drawing? → An S-break (cylindrical conventional break) symbol