Risk Management & Site Safety Flashcards
7 cards from real CDT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Risk Management & Site Safety flashcards as text
Under the OSHA Excavation Standard (29 CFR 1926 Subpart P), a competent person must inspect excavations:
Answer: Daily and after any event that could have changed conditions, such as rain
OSHA requires a competent person to inspect excavations daily prior to worker entry and after any event (rain, vibration, freeze-thaw) that could have destabilized the excavation.
A fire protection drawing shows a 'sprinkler demand point' connected to a hydraulic calculation. This information is critical for risk management because it ensures:
Answer: The water supply can meet the design demand flow and pressure to control a fire
Hydraulic calculations verify that the available water supply meets or exceeds the system's design demand, ensuring the sprinkler system will perform as intended during a fire event.
The purpose of a 'safety catch' or 'secondary retention' device shown on crane rigging details is to:
Answer: Prevent the load from accidentally disengaging from the hook
Safety catches (latch mechanisms) on rigging hooks prevent accidental load release due to snagging, improper seating, or sudden slack, which could cause a dropped-load fatality.
When electrical single-line drawings show an 'arc flash hazard boundary,' this boundary defines:
Answer: The distance at which a person could receive a second-degree burn from an arc flash incident
Per NFPA 70E, the arc flash boundary is the distance at which incident energy equals 1.2 cal/cm²—the threshold for a second-degree burn without PPE.
A drafting technician adds a 'traffic control plan' drawing to a set of roadway construction documents. The PRIMARY safety purpose of this drawing is to:
Answer: Protect workers and road users from collisions during construction activities
Traffic control plans establish buffer zones, signage, flagging, and channelization devices to separate workers from live traffic, preventing struck-by fatalities—the leading cause of roadway construction deaths.
In risk management terminology, 'residual risk' refers to:
Answer: The risk that remains after all feasible controls have been implemented
Residual risk is the level of risk that persists after control measures are in place; it must be evaluated to determine if it is acceptable or requires additional mitigation.
Which building code section most directly governs the design of guardrail systems shown on architectural drawings for open-sided floors and mezzanines?
Answer: IBC Section 1015 – Guards
IBC Section 1015 specifies guard (guardrail) height, opening limitations, and load requirements for open-sided walking surfaces including mezzanines, balconies, and elevated floors.