What type of drawings must be referenced to depict the HVAC duct that needs to be removed during renovations?

The correct choice identifies that mechanical demolition drawings are essential in this context because they specifically detail the existing mechanical systems within a building, including HVAC components. These drawings provide clear instructions on which parts of the system are to be demolished or removed during renovation work.

Understanding the purpose of mechanical demolition drawings is vital for effective project execution; they give crews precise information on HVAC layouts and facilitate planning for the removal process, ensuring safety and efficiency.

While structural drawings might outline the building's support and framework, and architectural drawings focus on the layout and aesthetic aspects of the spaces, they do not provide the necessary specifics about mechanical systems. Similarly, electrical drawings pertain solely to the electrical components of the building, which are not relevant to the removal of HVAC ductwork. Therefore, mechanical demolition drawings are the most appropriate references for understanding and executing the removal of HVAC duct systems during renovations.