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April 2024 Elevator System Weights – A Critical Mass

Publication Date: 2024
Article Link: Read Article


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SPECIAL NOTICE: Please check each course for verification of approval before purchasing.

This test is based on the article, Elevator System Weights - A Critical Mass, published in the April 2024 issue and counts as one contact hour (0.1 CEU) of elevator industry continuing education credit. Most courses are approved by NAEC for CET/CAT and NAESAI for QEI and in the following states: Alabama, Arkansas, Colorado, Florida, Georgia, Illinois, Indiana, Kentucky, Maryland, Mississippi, Missouri, Montana, Oklahoma, Pennsylvania, Vermont, Virginia, West Virginia, Wisconsin.

Learning Objectives - After reading this article, you should have learned about:  

  • Elevator masses (and also weights), which are important aspects of safety for traction elevators, thought they also come into play with hydraulic elevators.
  • The distinction between mass and weight; how these values are used in elevator design and initial build and how they can impact performance and safety of an elevator after installation and relative to service.
  • That the Safety Code for Elevator and Escalators (ASME A17.1/CSA B44) in recent revisions has made some changes that get us thinking about mass and weight.
  • Weighing already installed equipment (cars, counterweights [CWT] and compensation if part of the system) is not an easy or inherently reliable process. Technicians must be properly trained in how to do this.
  • Mass and weights ( used to measure force) in elevator systems are integral to understanding CWT overbalance and the effect/impact on stopping forces (of safeties, machine and other main brakes, emergency brakes, buffers). Traction is also another issue, as well as load effects on system wear, which ultimately influences safe operation and maintenance of elevators. Discussion and learning these topics help one understand how changes in safety code requirements are an improvement.

Enrollment Procedures:  

  1. If you do not already have an account on, you will need to create one. NOTE: the name of the person purchasing must be the same name as the person who will take the exam.
  2. For articles, click the "Read Article" tab above to download and study the article. For other courses, be sure to purchase the corresponding book.
  3. Include your full name when purchasing the exam.
  4. Follow the instructions on the purchase confirmation page to log in to the Online Testing Center.
  5. If you scored 80% or above you can immediately print your certificate of completion. If you fail the exam, you will be given instructions on how to pay a re-take fee and take the exam again.

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