A.15 mm below the top of plates
B.5 – 10 mm below the top of plates
C.Exactly at the level of the plates
D.10 – 15 mm above top of plates
E.Upto the maximum permissible level
A.15 mm below the top of plates
B.5 – 10 mm below the top of plates
C.Exactly at the level of the plates
D.10 – 15 mm above top of plates
E.Upto the maximum permissible level