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# AS1940-2017 Cl.5.8.4 Explanation

## AS1940-2017 Cl.5.8.4 Explanation

(OP)
Hi everyone,

Could you pls share your thoughts about the following clause in Australian standard (I guess that should be same with other codes) AS1940-2017 Cl.5.8.4

“ Where the aggregate capacity of the tanks in any compound exceeds 10 000 m3, intermediate bunds of at least half of the average height of the main bunds or 600 mm, whichever is the lesser, shall be provided so that any subdivision so created contains tanks having an aggregate capacity not exceeding 10 000 m3, or a single tank if such tank exceeds that capacity.”

Does the above define a maximum or minimum height for the intermediate bund wall?

### RE: AS1940-2017 Cl.5.8.4 Explanation

Yes. To me it is perfectly clear.

If the total capacity of any group of tanks is less than 10km3, no intermediate bunds need be provided.

If outer bunds are 1200mm or higher, one half their height is the minimum to be used for the intermediate bunds, however in any case Intermediate bunds shall not be less than 600mm. That would then be your minimum height.

There is no defined maximum height.

--Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."

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