Chapter
Apr 17, 2015
Half-Baked: How ASME A120 and IWCA I-14.1 Have Attempted to Undermine the Value and Validity of Structural Load Testing
Authors: G. R. Searer [email protected], J. E. Lewis [email protected], R. A. Dethlefs [email protected], and H. J. Hill [email protected]Author Affiliations
Publication: Structures Congress 2015
Abstract
Subcommittees of the American Society of Mechanical Engineers (ASME) and the International Window Cleaning Association (IWCA)—namely ASME A120, which writes and maintains the standard ASME A120.1 Safety Requirements for Powered Platforms and Traveling Ladders and Gantries for Building Maintenance, and IWCA I-14.1, which writes and maintains the standard IWCA I-14.1 Window Cleaning Safety—have in recent years adopted a concept of “half-load” testing. Half-load testing refers to the limits imposed by these voluntary standards on load testing of existing facade access structural support equipment for the purpose of verifying required capacity. In each case, the voluntary standard prohibits testing beyond 50 percent of the minimum OSHA required strength. This paper highlights the folly of the half-load testing concept adopted and promulgated by A120 and I-14.1, and is intended to educate engineers involved in the certification of facade access equipment about the dangers of such an approach. A number of case studies are provided that demonstrate how half-load testing can fail to identify critical problems in structural elements.
Get full access to this article
View all available purchase options and get full access to this chapter.
Information & Authors
Information
Published In
Copyright
© 2015 American Society of Civil Engineers.
History
Published online: Apr 17, 2015
Permissions
Request permissions for this article.
Authors
Affiliations
Wiss, Janney, Elstner Associates, Inc., 2000 Powell Street, Suite 1650, Emeryville, CA 94608. E-mail: [email protected]
Wiss, Janney, Elstner Associates, Inc., 10 South LaSalle Street, Suite 2600, Chicago, IL 60603. E-mail: [email protected]
Wiss, Janney, Elstner Associates, Inc., 960 South Harney Street, Seattle, WA 98108. E-mail: [email protected]
Wiss, Janney, Elstner Associates, Inc., 330 Pfingsten Road, Northbrook, IL 60062. E-mail: [email protected]
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.
View Options
Get Access
Access content
Please select your options to get access
Log in/Register
Log in via your institution (Shibboleth)
ASCE Members:
Please log in to see member pricing
Purchase
Save for later Item saved, go to cart Information on ASCE Library Cards
ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Get Access
Access content
Please select your options to get access
Log in/Register
Log in via your institution (Shibboleth)
ASCE Members:
Please log in to see member pricing
Purchase
Save for later Item saved, go to cart Information on ASCE Library Cards
ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.