When the riser is over two or three floors and you do not have a running platform, what should be used?

Using a template when the riser is over two or three floors without a running platform is essential for ensuring accuracy in the installation process. Templates provide a physical representation of the measurements required, allowing for precise placement and alignment of door frames and entrances, particularly in multi-floor scenarios where standard measuring techniques may be inadequate due to elevation and accessibility issues.

Templates help in maintaining consistency across multiple installations, reducing the potential for errors that could arise from incorrect measurements or alignments, which are particularly critical in the context of passenger elevator door installations. They allow the installer to visually verify positions and adjust as necessary before making permanent fixes, ultimately contributing to the safety and functionality of the elevator system.

While a chalk line, blueprint, or measuring tape could theoretically assist in some aspects of the task, they do not provide the same level of guidance and practical application necessary for installations in complex, multi-floor environments without the benefit of a running platform.