This course is based on the article, Elevator System with Multiple Cars in One Hoistway, published in the August 2010 issue and counts as 2 Contact Hours (0.2 CEU) towards recertification. Approved by: NAEC for CET, QEI Services and NAESA for QEI (A maximum of 0.2 CEU for online courses per annual renewal period can be applied towards maintenance of qualifications for certified inspectors.) and the states of Florida, Pennsylvania, Arkansas, Kentucky, Virginia and West Virginia.
Learning Objectives - After reading this article, you should have learned about:
- Having an elevator system with multiple cars in the same hoistway is an old idea, but except for one experimental use in the very early days, it has not been used in the real world for a long time.
- Elevator systems with multiple cars in the same hoistway in large office buildings are used to increase lifting capacity.
- Elevator systems with multiple cars in the same hoistway in residential buildings may be used for each car to provide a different type of service.
- Elevator systems with multiple cars in the same hoistway must be equipped with one or more collision-prevention system(s) to ensure safe operation.
- The round-trip time is the key parameter in an elevator system's design.
- The time-space diagram is an important tool used in the design and analysis of transportation systems, including the elevator system.
- Normalized capacity and normalized net capacity are key indicators that express the elevator system efficiency.
- Elevator shafts may be minimized (or optimized) when each car in the shaft stops at few floors.
- It is important to have enough spare shafts that can be used when elevator shafts fail.
- Computing operational parameters using the deterministic method (instead of the probabilistic method) works fine when one deals with a system that has few stops in the morning peak period.
Enrollment Procedures:- Include your full name when purchasing the online course.
- Within 2 to 3 business days you will receive an email with the article and instructions for taking the exam.
- Study article.
- Use the provided online link, ID, and Password to login to the Online Testing Center.
- If you scored 80% or above you can immediately print your certificate of completion. If you score below 80% you will have up to two free retakes.