What is the difference between high-level manholes and low-level manholes?

2009-12-09View Original

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What is the difference between high-level manholes and low-level manholes?

Reply #22009-12-09

You mean the high-level manhole of the internal floating roof tank; for high levels, a manhole with a core is used.

Reply #32010-03-15

This post was last edited by yuki.li on 2010-3-15 at 13:37. So how is the elevation of those high-level manholes determined? I only know that it needs to be higher than the maximum support height of the internal floating roof, but what is this maximum support height usually?

Reply #42010-03-16

Manholes are used for people to enter and exit, with the operating space designed with humans in mind.

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