Elevator Mechanic Practice Exam

You are stacking rails in a single hydro hoist way, with a rise of 48' how many rails will you need?

1. 4

2. 6

3. 8

4. 10

The correct answer is: 6

To determine the number of rails needed for a single hydro hoist way with a rise of 48 feet, it's important to understand the typical lengths of the rails that are used in the industry. Most commonly, elevator rails are available in standard lengths, which can vary but are often around 12 feet per rail. Given a rise of 48 feet, you can calculate the number of rails required by dividing the total rise by the length of each rail. If we use the standard length mentioned, dividing 48 feet by 12 feet per rail indicates that you would need 4 rails. However, if the rails are shorter or if there are specific installation requirements that may require additional rails, you would consider that when making your choice. The ideal scenario is practically to overestimate a little to ensure stability and safety factors in elevators. If the correct option is 6, it could mean specific industry practices or guidelines recommend rounding up for safety, accommodating any variations in rail length or ensuring sufficient material for a robust installation. In summary, the calculated need for rails arises from a standard length application, and the answer of 6 may incorporate a safety factor or installation guideline beyond mere calculations.