Benchmark "rz-kerb" : Linear Elasticity in r-z-coordinates (3D - rotational symmetric domain)

Material coefficients:	E	nu
	200000.	0.3
volume force :	f
	(0,0)
Boundary conditions:
Dirichlet-type:	u^2=0	bottom
Neumann-type:	g=(0,1)	top

Typical behavior of estimated relative error:
(Das typische Verhalten des geschaetzten rel. Fehlers) (Legend)

here some RUNs with times / iteration numbers / etc.