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July 2012 NEC Article:Constructional Stretch & Hoist-Rope Tension

Publication Date: 41091
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, Constructional Stretch and Hoist-Rope Tension, published in the July 2012 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, Oklahoma, Pennsylvania, Vermont, Virginia, Washington, West Virginia, Wisconsin.

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

  • Why equalizing hoist-rope tensions is so difficult
  • Why most rope-tension measurement devices are of little practical use
  • The concept of the term "constructional stretch"
  • The basic factors affecting constructional stretch in a hoist rope
  • The principle behind all load-measurement devices
  • The sources of error behind most load-measurement devices
  • Why a load-measurement device is different from one that actually equalizes rope loads

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  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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