Canadian Institute of Steel Construction
Projects Design Awards Membership Publications Technical Resources Sustainability Education Forum
General
On page 21 of the CISC publication “Crane-Supporting Steel Structures: Design Guide”, item 3 states that brackets should not be used to support crane beams with unfactored reactions greater than about 250 kN. Can you give a brief explanation for this requirement? – P.T. 10/1/2006
We asked the author, Robert A. MacCrimmon, to respond. And he did, from Australia! Bob says that this requirement has been in AIST (formerly AISE) Technical Report No. 13 – Guide for the Design and Construction of Mill Buildings for some time. His understanding is that historically, bracketed supports for heavier cranes can cause problems due to building frame deflections and failures of the bracket. This publication is an important reference in the industrial building milieu. For more information visit http://www.aist.org. You probably already know that you can download the CISC Crane Design Guide publication in a PDF format for free from our web site. You can also order a hard copy for $40, or for a reduced rate if you are a professional member of CISC (one of many membership incentives). Here’s the link, just in case www.cisc-icca.ca/publications/technical/design/craneguide/.You may find additional information from AISC’s Design Guide 7: Industrial Buildings - Roofs to Achor Rods, by James M. Fisher, which was revised in 2004. This question appeared in the "Ask Dr. Sylvie" column of Advantage Steel no. 27, Fall 2006.
We asked the author, Robert A. MacCrimmon, to respond. And he did, from Australia! Bob says that this requirement has been in AIST (formerly AISE) Technical Report No. 13 – Guide for the Design and Construction of Mill Buildings for some time. His understanding is that historically, bracketed supports for heavier cranes can cause problems due to building frame deflections and failures of the bracket. This publication is an important reference in the industrial building milieu. For more information visit http://www.aist.org. You probably already know that you can download the CISC Crane Design Guide publication in a PDF format for free from our web site. You can also order a hard copy for $40, or for a reduced rate if you are a professional member of CISC (one of many membership incentives). Here’s the link, just in case www.cisc-icca.ca/publications/technical/design/craneguide/.You may find additional information from AISC’s Design Guide 7: Industrial Buildings - Roofs to Achor Rods, by James M. Fisher, which was revised in 2004.
Have we responded to your question? If you need more details, please don't hesitate to contact our experts.
Questions in this category
Back to the FAQ