On 07/02/2011 16:35, Carl Denk wrote: > requires competent > people crawling all over the structure from divers in the water to the > very highest point, measuring remaining material and condition, then > doing a structural analysis using current design criteria. Like the Irish rail viaduct last year or year before that was inspected=20 and fell into sea just after train passed. Some scouts had contacted the rail company, but no diver went down. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .