What are the conditions under which cable guardrails provided by a steel erector can remain in place for other trades after steel activity has been completed?

Cable guardrails provided by a steel erector are an important safety feature on construction sites. For these guardrails to remain in place for other trades after the steel activity has been completed, it is essential that specific conditions are met to ensure ongoing safety. When we consider the requirements, the correct answer emphasizes the importance of both having an approval from the site supervisor as well as the status of additional trades.

Approval from the site supervisor is crucial because they are responsible for overseeing safety measures and ensuring that all aspects of the site are compliant with regulations. The presence of other scheduled trades is also significant since the work being done by these trades could potentially create situations where the guardrails are no longer adequate or necessary for safety.

By requiring both the approval of the site supervisor and ensuring that there are no additional trades scheduled, it allows for a comprehensive assessment of safety needs on the site. This approach minimizes the risk of accidents by ensuring that a proper evaluation has been conducted, and safety measures are based on active site conditions and work activities. Therefore, both conditions being part of the correct answer reinforces the necessity of maintaining a safe working environment for all personnel on the site.