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<p>[quote user="BaltACD"]</p> <p> </p> <div class="quote-header"> </div> <blockquote class="quote"> <div class="quote-user">blue streak 1</div> <div class="quote-content">Will not speculate but some eyewitnesses stated they saw lightning hit the bridge pylon ?  Now if that is true and there was not suffiecient lightning protection on outside of pylon ? ? ? </div> </blockquote> <div class="quote-footer"> </div> <p> </p> <p><span style="color:#0000ff;">Puts a spin on things - however, I would have expected the bridge piers to have been well grounded.</span></p> <div style="clear:both;"> </div> <p>[/quote]</p> <p>I expect in such a bridge too. That there was nothing visible doesn't tell anything. In concrete structure you use either the reinforcement steel or strip steel 2''x1/4''.</p> <p>In most cases it is the latter (at least in Germany) as using reinforcement means that the bars need to be electrically connected (welded). What I haven't seen are lightning rods on top of the pylons but the resolution of the photos might be not good enough to show. Electrical equipment and handrails will be protected.</p> <p>For those who are interested I link a Spanish language technical report about the bridge. <a href="http://informesdelaconstruccion.revistas.csic.es/index.php/informesdelaconstruccion/article/viewFile/3892/4426">http://informesdelaconstruccion.revistas.csic.es/index.php/informesdelaconstruccion/article/viewFile/3892/4426</a></p> <p>On page 9 and 10 are construction drawings. The report contains a lot of photos.</p> <p>According to the drawings the pylons have pile foundation.<br />Regards, Volker</p>
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