I would like to ask how to design lifting columns for vertical containers with small diameters
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Experts, for vertical vessels of DN350, it is possible to use lifting columns to access the upper tube box. However, standard 21639 does not specify sizes this small – how should smaller lifting columns be designed?
It’s so small that no lifting columns are needed; a hand chain hoist is sufficient
At such a young age, you just need to choose the appropriate size for a manhole
It’s only this small – there’s no need to install suspension columns. The fact that no standards exist for this size means it’s not suitable for such columns. You can add a set of lugs to the upper cover; if the pipe connections are slightly larger, they can be lifted directly
Any references for suspension columns with manholes? Thank you
The main issue is that it’s not possible to determine the weight that non-standard lifting columns can bear
It depends on your operational requirements. Calculate the value again / 0.8 – no problem