Safety Trained Supervisor in Construction (STSC) Practice Exam 2026 - Free STSC Practice Questions and Study Guide

A supervisor's responsibility regarding open floor holes on a worksite includes ensuring the safety of all personnel on the site. Covering the holes is essential to prevent accidental falls and injuries, which can occur if someone unknowingly steps into an open hole. By covering the holes, the supervisor is actively mitigating risk and creating a safer work environment.

Additionally, informing the crew of load surface restrictions is critical because it ensures that workers understand the limitations of the surface they are working on, especially if there are underlying structural concerns. This communication helps prevent overloading and possible compromise of structural integrity, which could lead to further accidents.

Other approaches, such as ignoring marked holes, leaving them uncovered, or filling them with debris, do not effectively address safety concerns. Ignoring the hazards posed by open holes, even if marked, is irresponsible and does not eliminate the risk of accidents. Leaving holes uncovered exposes workers to direct fall risks, which are contrary to basic safety protocols. Filling holes with debris may create additional hazards and does not adequately secure or mark the area, leading to confusion and potential accidents. Thus, the most prudent course of action is to cover the holes properly and communicate safety restrictions to the crew.