problem description
title="Simple Brick" nodes=8 elements=1 analysis=static

nodes
1 	x=0	y=0	z=0	constraint=fixed
2	x=1		
3	x=1	y=1
4	x=0	y=1
5	x=0	y=0	z=1	constraint=free		force=corner
6	x=1						force=corner
7	x=1	y=1					force=corner
8	x=0	y=1					force=corner

brick elements
1 nodes=[1,2,3,4,5,6,7,8] material=steel

material properties
steel nu=0.3 E=30e6

forces
corner Fz=1000

constraints
fixed	Tx=c Ty=c Tz=c
free	Tx=u Ty=u Tz=u

end
