CFB Site Management 3 — Questions and Answers
Question 1: A project experiences repeated material delivery delays due to site congestion. Which site management tool best addresses this issue?
- Revised RFI log
- Phased delivery schedule with dedicated unloading zones (Correct answer)
- Updated submittal register
- Revised project closeout checklist
Correct answer: Phased delivery schedule with dedicated unloading zones
A phased delivery schedule with designated unloading zones eliminates congestion by controlling when and where materials arrive.
Question 2: What does a Notice to Proceed (NTP) formally authorize?
- The contractor to submit final billing
- The contractor to begin construction work on site (Correct answer)
- The subcontractor to hire additional crew
- The designer to issue addenda
Correct answer: The contractor to begin construction work on site
A Notice to Proceed is the owner's formal written authorization for the contractor to mobilize and begin construction.
Question 3: A field superintendent observes that concrete is being placed during ambient temperatures below 40°F. What is the primary concern?
- Concrete will set too quickly
- Hydration may stop and strength gain will be compromised (Correct answer)
- Concrete will become too workable
- Water-cement ratio will decrease
Correct answer: Hydration may stop and strength gain will be compromised
Cold temperatures slow or halt the hydration process, preventing concrete from achieving design strength if proper cold-weather protections are not used.
Question 4: What is the main purpose of a construction site safety program's Job Hazard Analysis (JHA)?
- To price out material costs for a task
- To identify and mitigate hazards associated with a specific work task before it begins (Correct answer)
- To record post-incident injury details
- To assign crew responsibilities for scheduling
Correct answer: To identify and mitigate hazards associated with a specific work task before it begins
A JHA breaks down a task step by step to identify potential hazards and establish controls before work begins, preventing injuries proactively.
Question 5: Which of the following best describes a site's critical path in project scheduling?
- The route emergency vehicles use to access the site
- The sequence of tasks that determines the minimum project duration (Correct answer)
- The most expensive work activities on the project
- The first tasks completed during site mobilization
Correct answer: The sequence of tasks that determines the minimum project duration
The critical path is the longest sequence of dependent tasks; any delay on the critical path delays the overall project completion date.
Question 6: What document should a site manager issue when field conditions differ materially from what is shown on the contract drawings?
- Change order
- RFI (Request for Information)
- Differing Site Conditions notice to the owner (Correct answer)
- Punch list
Correct answer: Differing Site Conditions notice to the owner
A Differing Site Conditions notice formally alerts the owner to conditions that differ from those represented in the contract, preserving the contractor's rights.
Question 7: On a residential construction site, what is the primary purpose of installing silt fences along the perimeter?
- To mark the property boundary for subcontractors
- To prevent sediment-laden runoff from leaving the site and entering waterways (Correct answer)
- To block wind from disturbing stored materials
- To restrict unauthorized access to the site
Correct answer: To prevent sediment-laden runoff from leaving the site and entering waterways
Silt fences are a stormwater Best Management Practice (BMP) required to control erosion and prevent sediment from polluting adjacent waterways.
CFB Site Management 3
A project experiences repeated material delivery delays due to site congestion.
Which site management tool best addresses this issue?