Dave Mellor NJ Posted December 9, 2014 Share Posted December 9, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 9, 2014 Author Share Posted December 9, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 9, 2014 Author Share Posted December 9, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 9, 2014 Author Share Posted December 9, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 9, 2014 Author Share Posted December 9, 2014 Link to comment Share on other sites More sharing options...
Bleach Posted December 9, 2014 Share Posted December 9, 2014 (edited) ^^^ At least it didn't pop open. Edited December 9, 2014 by Bleach (see edit history) Link to comment Share on other sites More sharing options...
John_S_in_Penna Posted December 9, 2014 Share Posted December 9, 2014 That last video is interesting to an engineer.I don't know the specifics of rack design, butit is a poor design when the removal of oneelement results in progressive collapse.Progressive collapse is one failure mode whichengineers should design against. Link to comment Share on other sites More sharing options...
Guest Skyking Posted December 9, 2014 Share Posted December 9, 2014 That last video is interesting to an engineer.I don't know the specifics of rack design, butit is a poor design when the removal of oneelement results in progressive collapse.Progressive collapse is one failure mode whichengineers should design against.Apparently nothing was bolted, probably was relying on just the pressed in hooks. Not good!! I'm sure someone was fired. Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 10, 2014 Author Share Posted December 10, 2014 How about that off the rack car with a "Quality" sign right above it? Link to comment Share on other sites More sharing options...
Bleach Posted December 10, 2014 Share Posted December 10, 2014 Funny I didn't notice that until you pointed that out Dave. Link to comment Share on other sites More sharing options...
cahartley Posted December 10, 2014 Share Posted December 10, 2014 How about that off the rack car with a "Quality" sign right above it?In all fairness they DID a quality job of smashing the car....... ....... Link to comment Share on other sites More sharing options...
Guest Stuuuuuuarrt Posted December 10, 2014 Share Posted December 10, 2014 Link to comment Share on other sites More sharing options...
8E45E Posted December 10, 2014 Share Posted December 10, 2014 That last video is interesting to an engineer.I don't know the specifics of rack design, butit is a poor design when the removal of oneelement results in progressive collapse.Progressive collapse is one failure mode whichengineers should design against.Actually engineers DO study 'progressive collapse' in huge building demolition. It is an engineering science that can take 6 months to a year to implement, depending on the size and amount of stories of the structure. After strategically weakening the load-bearing walls, explosives are then placed in key areas and set to go off seconds to milli-seconds apart to progressively collapse a huge building unto itself with little, or no damage to the neighboring area. Craig Link to comment Share on other sites More sharing options...
John_S_in_Penna Posted December 11, 2014 Share Posted December 11, 2014 Interesting point about progressive collapse in demolition, Dave!While a building is in use, though, progressive collapse is somethingwhich isn't wanted! There was a case in Canada (in the 1960's, I believe) where a woman was using her gas oven; it exploded andtook out a wall on an upper story of her high-rise apartment; consequently the entire corner of that high-rise building, from roof to road,collapsed.Today, if one part of a building collapses, it shouldn't take the entirebuilding with it! Link to comment Share on other sites More sharing options...
keiser31 Posted December 11, 2014 Share Posted December 11, 2014 (edited) So you come home from work to find your Pontiac Firebird was parked in the wrong place when a firetruck rolls down the hill....Not much protection from the car cover. Edited December 11, 2014 by keiser31 (see edit history) Link to comment Share on other sites More sharing options...
capngrog Posted December 11, 2014 Share Posted December 11, 2014 That last video is interesting to an engineer.I don't know the specifics of rack design, butit is a poor design when the removal of oneelement results in progressive collapse.Progressive collapse is one failure mode whichengineers should design against.Most storage rack installations are structurally designed to a fine line and are not designed to tolerate much damage. With that said, many of these storage rack systems are not even installed properly. Rack uprights (columns) are often not even bolted to the floor, and this makes them even more vulnerable to failure in column if struck from the side. Just a little displacement from vertical of an upright could cause a failure, and since structural redundancy is usually not part of the overall design of the rack system, collapse often results. Many rack systems employ tab-in-slot connections, which are fine up to a point. I have encountered rack installations utilizing bolted connections, but with the bolts only hand tight ... if that. In short, rack collapse is not unusual after a good hit with a heavy fork lift.Most designs look good on paper, but there is no design that can withstand a poor installation or an act of creative stupidity on the part of us Human Beings.Just my opinion,Grog Link to comment Share on other sites More sharing options...
Joe in Canada Posted December 11, 2014 Share Posted December 11, 2014 (edited) It can always be worse!!!!!!!!!!!!! Edited December 11, 2014 by Joe in Canada (see edit history) Link to comment Share on other sites More sharing options...
Joe in Canada Posted December 11, 2014 Share Posted December 11, 2014 Are they restorable or should I pass???? Link to comment Share on other sites More sharing options...
keiser31 Posted December 11, 2014 Share Posted December 11, 2014 Haa! I have stood in this spot. This is in Balboa Park down in San Diego. I used to play Frisbee there on my breaks. That is 6th Street in the background. Link to comment Share on other sites More sharing options...
mercer09 Posted December 11, 2014 Share Posted December 11, 2014 Dave, sorry for all your troubles.......................hope things get better! Link to comment Share on other sites More sharing options...
Guest Skyking Posted December 12, 2014 Share Posted December 12, 2014 I would love to know some of the stories that belong to the pictures, like the 50 Ford stuck inside the building or the paint inside the car. That Ford looks new! Link to comment Share on other sites More sharing options...
keiser31 Posted December 12, 2014 Share Posted December 12, 2014 I would love to know some of the stories that belong to the pictures, like the 50 Ford stuck inside the building or the paint inside the car. That Ford looks new!Looks like the guy with the paint inside hit another car and spilled a pail full. Link to comment Share on other sites More sharing options...
Joe in Canada Posted December 12, 2014 Share Posted December 12, 2014 So does the Ferrari under the truck look new. The story goes it was an upset woman driver ticked with her husband. Link to comment Share on other sites More sharing options...
nick8086 Posted December 12, 2014 Share Posted December 12, 2014 It happens: Link to comment Share on other sites More sharing options...
8E45E Posted December 12, 2014 Share Posted December 12, 2014 Interesting point about progressive collapse in demolition, Dave!While a building is in use, though, progressive collapse is somethingwhich isn't wanted! There was a case in Canada (in the 1960's, I believe) where a woman was using her gas oven; it exploded andtook out a wall on an upper story of her high-rise apartment; consequently the entire corner of that high-rise building, from roof to road,collapsed.Today, if one part of a building collapses, it shouldn't take the entirebuilding with it!Unfortunately, many of us did witness (either on TV or frightfully in person), the progressive collapse of the twin towers an hour-and-a-half to two hours after they got hit by those planes.Craig Link to comment Share on other sites More sharing options...
Joe in Canada Posted December 12, 2014 Share Posted December 12, 2014 Here is one for the books. Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 12, 2014 Author Share Posted December 12, 2014 Reminds me of the movie, "Silver Streak". Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 12, 2014 Author Share Posted December 12, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 12, 2014 Author Share Posted December 12, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 12, 2014 Author Share Posted December 12, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 12, 2014 Author Share Posted December 12, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 12, 2014 Author Share Posted December 12, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 12, 2014 Author Share Posted December 12, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 12, 2014 Author Share Posted December 12, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 12, 2014 Author Share Posted December 12, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 12, 2014 Author Share Posted December 12, 2014 Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted December 12, 2014 Author Share Posted December 12, 2014 Link to comment Share on other sites More sharing options...
Joe in Canada Posted December 12, 2014 Share Posted December 12, 2014 Nobody is perfect. Link to comment Share on other sites More sharing options...
Joe in Canada Posted December 12, 2014 Share Posted December 12, 2014 Link to comment Share on other sites More sharing options...
keiser31 Posted December 12, 2014 Share Posted December 12, 2014 I took this shot back when I was a kid in Michigan. My house was on the next block down. Big storm went right down our street.... Link to comment Share on other sites More sharing options...
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