import rhinoscriptsyntax as rs

allobjs = rs.AllObjects()

#draw a closed curve in Rhino
rs.Command("_Curve Degree=2 90,0,0 90,15,0 115,20,0 130,35,0 85,60,0 95,80,0 120,90,0 135,80,0 120,70,0 105,60,0 135,40,0 130,20,0 100,0,0 90,0,0 Close _Enter")
crv = rs.FirstObject(select=True)

#extrude the curve
rs.Command("_ExtrudeCrv Solid=No 100 _Enter")
srf = rs.FirstObject(select=True)

#use handles to change NURBS shape

#create contourlines in Z-direction and extrude them (floor plates)
rs.Command("Contour 0,0,0 0,0,1 10 _Enter")
rs.Command("_ExtrudeCrv Solid=Yes 1 _Enter")

#create contourlines in X-direction and use the pipe command (vertical support)
rs.SelectObject(srf)
rs.Command("Contour 0,0,0 1,0,0 5 _Enter")
rs.Command("Pipe 0.2 _Enter")