CDS Study Guide 2026
Everything you need to pass the CDS exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📚 CDS Topics to Study (68)
✍️ Sample CDS Questions & Answers
1. Clamshell buckets attached to cranes are most effective for which demolition task?
Clamshell buckets use a crane's vertical lift to scoop debris from deep excavations or basement areas inaccessible to wheeled equipment.
2. How does risk appetite influence management decisions?
Risk appetite defines acceptable risk levels in pursuit of objectives, guiding decisions about which risks to accept, mitigate, transfer, or avoid.
3. Under OSHA 1926.858, what is the maximum floor loading permitted for debris accumulation before it must be removed?
OSHA 1926.858 prohibits debris accumulation that exceeds the design load capacity of the floor to prevent structural failure during demolition.
4. Which confined space classification applies to a basement demolition area with a single ladder entry point and potential for toxic gas accumulation from disturbed materials?
A space with restricted entry and a recognized serious safety or health hazard, such as toxic gas accumulation, qualifies as a permit-required confined space under OSHA 1910.146.
5. During selective demolition of a multi-story building, floors should generally be removed in what order?
Demolition proceeds top to bottom to prevent overloading lower structural members and to maintain control over debris accumulation and structural stability.
6. On a structural drawing, what does a 'match line' indicate?
A match line shows where a plan has been split across multiple sheets; the contractor must align both sheets at that line to see the full picture.