What are two types of mechanical drawings used in the installation of elevators?

The correct answer focuses on the two types of mechanical drawings: layout drawing and detail drawing, which are essential for the installation of elevators.

A layout drawing provides a comprehensive overview of the entire elevator system as it will be installed. This drawing includes the placement of the elevator shaft, hoistway, machinery, and any other critical elements in relation to the building structure. It serves as a roadmap for the installation team, ensuring that all components are positioned correctly for optimal functionality and safety.

A detail drawing, on the other hand, offers a closer look at specific components of the elevator system. This may include the dimensions, materials, and assembly methods necessary for constructing individual parts such as the cab, drive system, or any mechanical devices. Detail drawings are crucial because they provide the precise information needed for fabricating parts and ensure that everything fits together during installation.

Together, these drawings ensure that installers have both the overall context and the specific details required for a successful elevator installation. Other options may include different types of drawings relevant to various construction projects, but they do not specifically address the mechanical aspects that are critical for elevator systems.