Should external pressure be considered in chimney calculations? !
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For chimneys with low internal pressure, will strong winds generate high external pressure? ! Thank you. . . . . . . .
This post was last edited by zhangjuhua on 2015-7-25 21:00. What material is a chimney made of? It can’t be considered a container, right? Hehe. A chimney seems to be connected to the outside world; it’s likely that failure occurs due to wind loads, lateral bending, instability, etc. It should be classified as an external load rather than external pressure. There are specific design codes for tall structures
Chimney design does not require consideration of external pressure
The chimney operates under negative pressure, with smoke extraction relying on the density difference.
Okay, thank you. . . . . . .
For chimneys, it is not necessary to calculate external pressures; instead, the following needs to be calculated: 1, the strength of the chimney under bending moments and axial forces; 2, the local stability of the chimney under bending moments and axial forces; 3, the overall stability of the chimney under bending moments and axial forces
Okay, that’s professional enough. . . . Should the chimney outlet be strengthened? !
Angle steel can be added at the outlet, while the stress on the holes at the inlet needs to be checked
Hole stress? ! Why should exports be strengthened? ! Thank you. . . . .
The design calculations for chimneys should take into account external pressures, the emission of flue gases, and the siphon effect caused by air flow, which can lead to instability.
I’ve never heard of the siphon effect in chimneys! Where is it being taught? !