Can anyone tell me what is the difference between plates sketch and plates annular? Please try to give the answer quickly as it is very important for me.
In petroleum storage tanks, bottom of steel plates are specified, laid and supported by a prepared foundation. In the bottom a couple of rectangular shaped plates surrounded by a set of plate shaped are located which are sketched plates .The main purpose is to give a circular shape.
An annular plates ring is supplied around rectangular plates. The shell is sited down on the sketch or annular plates, just inside periphery. Annular plates locate in bottom periphery and sketch plates locate over annular plates
