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'Dirty Jobs - Mike Rowe' puttin' up a tower in North Dakota.

I saw that. Amazing how much of the stuff they glossed over. What's more impressive that just showing them stacking one section is showing them stacking the entire tower from pier to beacon.

And why were they putting the bolts in upside down? ???
 
As it was explained to me...if you put the bolts in head-down (lockwasher/nut on top of the flange), if the nut comes off the bolt will eventually fall out of the hole. That problem would be much easier to spot in an inspection than if the bolt were inserted head-up. Then the bolt would tend to stay in place if the nut came off, and the lack of a sturdy connection would be harder to spot.
 
awsherrill said:
As it was explained to me...if you put the bolts in head-down (lockwasher/nut on top of the flange), if the nut comes off the bolt will eventually fall out of the hole. That problem would be much easier to spot in an inspection than if the bolt were inserted head-up. Then the bolt would tend to stay in place if the nut came off, and the lack of a sturdy connection would be harder to spot.
Click to expand...
Agreed. Upside down bolts on towers is standard practice.
 
That may be true, however if you put the bolts in heads up and the nut comes off, the bolt will remain and still offer some help in keeping the particular leg in place. Couple of bolts fall out and eventually that leg will have nothing to keep it in place since the third bolt will eventually fail being the only one left. I'd rather have a couple of loose bolts in the hole than nothing. And if a tower inspector can't see the nut missing on an inspection, perhaps that's not the line of work he needs to be in.
 
"Mike Rowe' puttin' up a tower in North Dakota."

You should see the episode where he works on a live high voltage line from a helicopter. Amazing.
 
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