hello .I have one doubt...when we are drawing a pipe line... or an isometric...  when its to be defined  the supports ?? how its normally the best way to do ?? are there librarys of supports for pipes of big and small diameter ?? or we should do all the supports ??thx... 

you require thrust bocks for steel pipelines on all underground pipelinefor above ground lines you need concrete supports and suitable steelstraps at joint positions  

AutoCAD 1990?  Never heard of it.  I have heard of Release 9 and 2000.

thx for the answer....Hugh... if i understand well... you are saying that there are blocks of supports in inventor ,  to put in the drawing   ?? where  can i see that if they exist  ?f they not exist... its means that we need to drawn them by " hand " ( in the inventor by good old school :)  correct ? yes.. i know that if the pipe in going above the floor.. . we need to put  first a concrete support.. and after that we finallized with a steel support... .. normally done in paper mills  , refinerys  etc.....cheers :)

Thrust blocks are used on water pipes that are buried in the ground.  Sanitary sewers and drainage pipes don't require thrust blocks.
John Connor2013-11-29 00:18:22

ok... but i am talking about pipes above the ground...