North Stand Construction Discussion

failsworthblueboy said:
Really interesting video that mate, thank you, I'm guessing the fella with the theodolite at ground level is responsible for setting the angle of the beam before they lift.
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It was crazy watching it pirouette in mid air to change direction for the guys to grab it. I felt for the guy grabbing it imagine the weight of it trying to push him off the platform. Was there nearly an hour to capture that so it shows how long it takes to do one tensioner and make sure they are secure thanks.
 
Gordyola said:
Curious as to how the support beam is disconnected from the rod Shame your batteries ran out
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Yes Gordyola, I never thought I'd capture that, but surprised at how long it takes, might throw my mini drone in the car for occasions where anything like that is happening again so there would always be some kind of contingency plan. Cheers
 
JOGAMIGMOG said:
Amazon how they calculate the exact length of each cable. If a cable is out by a few mil it’s not as though you can stretch it to fit!
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Don't think the rods have been tensioned yet, not sure how its done, but would expect all the rods have to be in place. Same reason that they have connected the centre section of the roof yet with the purlins probably need to get both sides tensioned as this connects the two quad pods
 
Gordyola said:
Don't think the rods have been tensioned yet, not sure how its done, but would expect all the rods have to be in place. Same reason that they have connected the centre section of the roof yet with the purlins probably need to get both sides tensioned as this connects the two quad pods
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Good question, I think the weight of the roof as soon as the rods take the weight will be the tension, I don't see where they can get movement to tighten them from they are in fixed positions, I could be wrong and usually I am, the lift indicated to me that they wanted as little stress on the rods as possible before becoming weight baring, there will be a tolerance built into the design for tension and in the end as always will come down to mathematical equasions.
It really is some very clever engineering work.
 
failsworthblueboy said:
Good question, I think the weight of the roof as soon as the rods take the weight will be the tension, I don't see where they can get movement to tighten them from they are in fixed positions, I could be wrong and usually I am, the lift indicated to me that they wanted as little stress on the rods as possible before becoming weight baring, there will be a tolerance built into the design for tension and in the end as always will come down to mathematical equasions.
It really is some very clever engineering work.
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Could be, I've been wondering for awhile how that works. It may explain the odd vertical end supports with the 2 yellow temporary connections, it'll be interesting to see what happens. Would make a great video maybe but it could be a long job.
 
failsworthblueboy said:
Good question, I think the weight of the roof as soon as the rods take the weight will be the tension, I don't see where they can get movement to tighten them from they are in fixed positions, I could be wrong and usually I am, the lift indicated to me that they wanted as little stress on the rods as possible before becoming weight baring, there will be a tolerance built into the design for tension and in the end as always will come down to mathematical equasions.
It really is some very clever engineering work.
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Makes sense and points even more so as to why they haven't connect the middle section each side "drops" and finds its level first.
 
Gordyola said:
Don't think the rods have been tensioned yet, not sure how its done, but would expect all the rods have to be in place. Same reason that they have connected the centre section of the roof yet with the purlins probably need to get both sides tensioned as this connects the two quad pods
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This might be me being stupid but I thought we saw the tensioning rods were delivered in sections and connected on site , I assumed with threaded/ sleeved ends ??? If that’s correct that would explain how they are tightened / tensioned ??
 
Penders1957 said:
This might be me being stupid but I thought we saw the tensioning rods were delivered in sections and connected on site , I assumed with threaded/ sleeved ends ??? If that’s correct that would explain how they are tightened / tensioned ??
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That's what I initially thought myself but I've talked myself out of that now. I might change my mind again tomorrow though.
 
Penders1957 said:
This might be me being stupid but I thought we saw the tensioning rods were delivered in sections and connected on site , I assumed with threaded/ sleeved ends ??? If that’s correct that would explain how they are tightened / tensioned ??
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Wont call you stupid as that was my thought my only doubt was the access to the turnbuckles I think @failsworthblueboy is correct in that the weight of the roof will tension the rods
 
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Gordyola said:
Want call you stupid as that was my thought my only doubt was the access to the turnbuckles I think @failsworthblueboy is correct in that the weight of the roof will tension the rods
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Can’t believe they are not tensioned in place , the ones on the east towers were sagging slightly when fitted but now look tighter , and a steel framed structure on heavily piled foundations shouldnt settle by more than a couple of mm ! ( in my humble opinion as a non structural engineer ) ;-)
 
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