NCCER CORE Cheat Sheet 2026

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

1. Before using any hand tool, what should a worker inspect? → The handle for cracks, the head for damage, and overall condition
2. What does the abbreviation 'NTS' on a construction drawing mean? → Not to Scale
3. Which of the following is the best practice for ensuring the safety of workers around heavy equipment, such as excavators or loaders? → Establishing clear communication, using a spotter, and maintaining safe distances
4. What does a red tag on equipment indicate? → Equipment is out of service and must not be used
5. Which of the following is a fundamental practice for preventing rust and ensuring the longevity of metal hand tools like wrenches, chisels, and hammers? → Keeping them clean, dry, and applying a light coat of oil.
6. A jigsaw is primarily used for: → Curved cuts
7. Which tool helps ensure a surface is horizontal or vertical? → Level
8. How many inches are in a foot? → 12
9. What is the purpose of a section view in construction drawings? → To reveal the internal structure by cutting through the building
10. What is the decimal equivalent of 3/4? → 0.75
11. What type of barricade tape indicates an immediate danger zone? → Red danger tape
12. What does the abbreviation 'SWL' stand for in rigging? → Safe Working Load
13. How many square feet of drywall are needed to cover a wall that is 8 feet high and 14 feet long? → 112 sq ft
14. What must be done before any excavation work begins? → Contact utility companies to locate underground lines
15. What is the standard hand signal for 'STOP' to a crane operator? → Arm extended with palm facing the crane
16. What is the purpose of a competent person on a construction site? → To identify and correct safety hazards with authority to take action
17. What is the most important competency assessed in Instructional Planning & Delivery for professionals in this field? → Applied knowledge and practical problem-solving ability
18. What is the correct way to hand a sharp tool to a coworker? → Hand it handle first, sharp edge facing away
19. Which class of fire extinguisher is suitable for electrical fires? → Class C
20. Using the Pythagorean theorem, what is the rafter length if the run is 12 feet and the rise is 9 feet? → 15 feet
21. What is the most effective way to confirm a verbal instruction was understood on a noisy jobsite? → Have the person repeat the instruction back
22. What should a worker do FIRST upon discovering a hazardous condition on the jobsite? → Report it to the supervisor
23. How many 16-inch pieces can be cut from an 8-foot board (ignoring blade width)? → 6 pieces
24. Construction symbols are important because they: → Standardize interpretation
25. When stacking materials on a job site, the general rule for maximum stack height is based on: → The stability and weight of the material to prevent tipping
26. What is the correct action when you discover defective rigging equipment on a job site? → Tag it out and remove it from service immediately
27. What is the perimeter of a 30 ft by 50 ft rectangular foundation? → 160 feet
28. What color hard hat typically identifies a visitor or new worker on a construction site? → Green
29. Which of the following is NOT one of OSHA's construction 'Fatal Four' hazards? → Chemical burns
30. What type of drawing provides the most information about door and window sizes? → Door and window schedule