#782 Add volume to phIoT

Chad Ruch Mon 27 Jan

I believe the following should be added to phIoT:

def: volume
doc: Volume of a shape or floor space

meta
def: volume
doc: See above
is: number
lib: phIoT
prefUnit: ft³, m³
tagOn: site, space

Keith Bishoρ Tue 28 Jan

+1

and while we're discussing volume... can we get ccf added to the unit db?

ccf is equivalent to the hft³ that we have in the unit database, but...

ccf is used fairly frequently with both gas and water billing.

When I google hft³, 2 of the top 3 results are from us (one on project-haystack.org and one on project-haystack.dev... in fact, of the top 9 results (first page) 4 of them were obix, fantom, or haystack)... it doesn't seem to be used often (or much at all outside of obix unit db derivatives)

Brian Frank Fri 31 Jan

We already have a standard volume tag - it just hasn't been mapped over to Haystack 4 yet

Regarding

ccf is equivalent to the hft³ that we have in the unit database, but...

The hft³ is a measure of volume, but I think ccf is a measure of natural gas energy and we do have a unit defined for that called hundred_cubic_feet_natural_gas (however we do not have the abbreviation)

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