CCM Quality, Safety & Risk Management 5 — Questions and Answers
Question 1: A project team uses Monte Carlo simulation to analyze schedule risk. The output shows the P80 completion date is October 15. What does P80 mean?
- 80% of activities are on the critical path
- There is an 80% probability the project will finish by October 15 (Correct answer)
- The project has an 80% schedule performance index
- 80% of risks have been mitigated by October 15
Correct answer: There is an 80% probability the project will finish by October 15
P80 (the 80th percentile) means that in 80% of the simulation iterations, the project completes on or before October 15.
Question 2: Which construction safety program element requires employers to identify, evaluate, and control workplace hazards before work begins?
- Incident Investigation
- Hazard Identification and Risk Assessment (Correct answer)
- Return-to-Work Program
- Safety Incentive Program
Correct answer: Hazard Identification and Risk Assessment
Hazard Identification and Risk Assessment is a proactive safety element that finds and controls hazards before they cause incidents.
Question 3: In construction quality management, what distinguishes 'quality assurance' from 'quality control'?
- QA focuses on testing finished products; QC focuses on process audits
- QA is process-oriented and preventive; QC is product-oriented and detective (Correct answer)
- QA is performed by third parties; QC is performed by the contractor
- QA applies to design; QC applies only to construction activities
Correct answer: QA is process-oriented and preventive; QC is product-oriented and detective
Quality Assurance (QA) focuses on evaluating processes to prevent defects, while Quality Control (QC) focuses on inspecting products and outputs to detect defects.
Question 4: A confined space on a construction project requires a permit before entry. Under OSHA, which of the following is NOT a characteristic of a permit-required confined space?
- Contains or has potential to contain a hazardous atmosphere
- Has a configuration that could trap or asphyxiate an entrant
- Is large enough and configured so a worker can bodily enter
- Is frequently entered by workers during normal daily operations (Correct answer)
Correct answer: Is frequently entered by workers during normal daily operations
Frequent entry does not affect permit-required status; OSHA defines permit-required confined spaces by hazardous atmosphere, entrapment potential, or other recognized serious safety hazards.
Question 5: When preparing a risk management plan for a large public construction project, which document typically serves as the primary input for identifying project-specific risks?
- The contractor's EMR report
- The project scope statement and WBS (Correct answer)
- OSHA Form 300 from previous projects
- The project closeout report from a similar completed project
Correct answer: The project scope statement and WBS
The scope statement and Work Breakdown Structure define what the project entails, making them the primary basis for systematically identifying risks tied to specific deliverables and activities.
Question 6: A CM observes that a subcontractor is consistently installing ductwork 1/8 inch outside the specified tolerance. The CM should FIRST:
- Issue a stop-work order and notify the owner immediately
- Document the observations and issue a nonconformance notice to the subcontractor (Correct answer)
- Accept the work because 1/8 inch is a minor variance
- Request the design engineer to revise the specification
Correct answer: Document the observations and issue a nonconformance notice to the subcontractor
The appropriate first response is to document the pattern and formally notify the subcontractor via a nonconformance notice, triggering the required corrective action process.
Question 7: Which risk response is employed when a project team decides to set aside a contingency reserve to cover the potential cost of an identified risk event?
- Risk avoidance
- Risk acceptance (active) (Correct answer)
- Risk mitigation
- Risk exploitation
Correct answer: Risk acceptance (active)
Active risk acceptance involves acknowledging a risk and establishing a contingency reserve specifically to address it if it occurs, rather than ignoring it.
CCM Quality, Safety & Risk Management 5
A project team uses Monte Carlo simulation to analyze schedule risk.
The output shows the P80 completion date is October 15.
What does P80 mean?