B747-400 cabin air volume

[gpn01]

Can anyone point me to a publicly available document on cabin air volume in a B747-400? Numbers needed for a college research project on air quality and how to manage the environment on board. Thanks in advance.

[gas path]

Google is your friend!
885.9 cubic metres.:ok:

[gpn01]

Indeed, eventually found that
Boeing 747-400 Twin-Aisle Jet Airliner - Aerospace Technology (http://www.aerospace-technology.com/projects/747/) gives it as 885.9m³

Cheers!