Capt Groper,
Documentation please !
In Canada and the US ( I do not know about JAA or CAA rules) the applicable AIMs make it clear that circuit altitude is 1000 above airport elevation unless otherwise noted.
Others pilots I know think 1500 for jets but no one can document it. Flight Safety apparently teach 1500 for jets, but again no documentation except their own manuals.
Anyone ?
best regards,
Bruce Waddington