Metrodome collapse symptomatic

SUBHEAD: In the old days, they built places that could last a century. Fenway Park. Wrigley Field. Boston Garden.By Lloyd Alter on 14 December 2010 for TreeHugger - (http://www.treehugger.com/files/2010/12/metrodome-roof-failure-symptom-of-larger-failure.php) Image above: The collapsed roof of the Twin City Metrodome. From original article.People build air supported domes like the Hubert