The ceiling access hatch in our 100+ year old house is a rather snug 14 x 20 inches - no metrics then. We have been told that it is no longer legal as it fails the "fat fireman" or the "fully equipped fireman" test - it should be bigger. We are considering a kitchen upgrade and wonder if we should enlarge the access hatch at the same time. Is there an Australian Standard or other rules with which we should or must comply? Should we enlarge it anyway; we very rarely need to...

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