set grav 0,0,-9.81
ini smin=-25.00e6 apply grad 0 0 2.50e4
ini smax=-50.00e6 apply grad 0 0 5.00e4
ini syy=-25.00e6 apply grad 0 0 2.50e4
apply nstress -20.00e6 range z 199.9 200.1
apply nstress -50.00e6 grad 0 0 5.00e4 range x 399.9 400.1
fix z ran z -0.1 0.1
fix x ran x -0.1 0.1
fix y