Design issues for a chimney with a diameter of 3m and a height of 90m – urgent!
Thread Content
Condition: It is now necessary to design a tower with a diameter of 8 meters and a height of 50 meters, on top of which there will be a chimney with a diameter of 3 meters and a height of 40 meters; the total height thus being 90 meters； Since there is no open space, cables cannot be installed. Taking a tower wall thickness of 20 mm, a chimney wall thickness of 14 mm, and a deflection of 100 mm, the calculation using SW6 shows it is acceptable; Question: Is it possible for this chimney to be used without any other forms of fixation? Why? I hope everyone can participate! Thank you so much!
If that chimney isn’t secured in any other way, it shouldn’t be possible, in my opinion; as for why, it’s not clear yet. Looking forward to answers from experts.
It’s too high; it won’t work. I specialize in chimney construction
If there are no other fixed methods, I think it’s not feasible.
Without a cable, you at least need to use an anchor, unless the chimney itself is heavy enough that the wind can’t lift it – this requires some calculation to determine.
That’s definitely not possible; the chimney can’t be blown down by the wind
This post was last edited by The wise are enlightened on 2015-12-6 at 20:14. It’s something like a smoke tower combined with a wine bottle shape; I saw one 75 meters tall just a couple of days ago, and it wasn’t reinforced with steel cables. For a 90-meter chimney, the structural engineering team is responsible for calculating the wind load and uplift resistance.
When I use SW6 for calculations, the software also calculates wind loads and seismic loads. It should be able to replace the calculations done by the structural engineering team, right?
Which specific aspect do you mean? Install? Or stiffness?
This device has a large diameter; using the SW6 calculation software, after entering the wind load and seismic load values, the wind load of 450 N/m2 and a seismic intensity of level 7 were both found to be acceptable. A deflection of around 100 mm means it won’t “flip over”.
It can be reviewed jointly by the equipment specialists and the structural engineers.