Dear friends,
Could anyone of you please explain what does (Location class )R1, R2, T1 & T2 stands for in AS 2885.5.
If it is R1, what is the kind of location ?? is that remote, free from human approach ?? similarly for all the four !!! Does anywhere it is stated ?? either in the australian standard or in any of the standard to show the location class.

Please post me the corresponding standard if any.

Another issue,
is there any standard that defines the crossing of undergroud fuel pipe line with other pipes?? hope it is OISD 141.. do let me know if anything more

Thanks in advance,
Chells