Two draft standards have recently been posted on the ESTA website for public review through 17 January 2006.

BSR E1.2-200x, Entertainment Technology-Design, Manufacture and Use of Aluminum Trusses and Towers, is a revision of the existing American National Standard E1.2-2000. Its revisions are to address the effects adding or removing paint or other coatings may have on the strength of aluminum truss and tower modules. The changes since the last public review have focused on clarifying the references to other standards.

BSR E1.4-200x, Entertainment Technology-Manual Counterweight Rigging Systems, describes the design and construction of manually powered counterweight rigging systems. There are numerous editorial changes made since the last public review, and a few substantive changes, primarily dealing with the load ratings of trim chains. A listing of the last public review comments and their resolutions is provided as background material for this public review.

Note that the website listings for the documents show the reviews as ending one day after the dates listed above. This is because the reviews listed here end when the date listed on the website begins. That is, the start of January 18 at midnight UTC marks the end of January 17; when January 18 starts, the links to the review materials on the website will disappear.

In addition to being asked to review the documents to see if they offer adequate advice, reviewers are asked to look for protected intellectual property in the draft standards. ESTA does not warrant that its standards contain no protected intellectual property, but it also does not intend to adopt any standard that requires the use of protected intellectual property, unless that property is necessary for technical reasons and can be licensed and used by anyone without prejudice or preference for a reasonable fee. Any protected intellectual property in the document should be pointed out in the comments.

For more information, please contact Karl G. Ruling, ESTA's technical standards manager, at