'Area load(One way slab) or floor load(Two way slab) 'self weight of plate Dim ly, lx As Long Dim YMIN, YMAX, ZMIN, ZMAX, XMIN, XMAX As Double Dim thk As Double 'lx = CLng(lblslablength.Caption) lx = 4 ly = 4 'ly = CLng(lblslabbredth.Caption) thk = CDbl(txtthk.Text) 'Plate property 'Create plate specification Dim PropertyNo As Long Dim bResult As Boolean PropertyNo = objOpenSTAAD.Property.CreatePlateThicknessProperty(thk) 'Get the application object -'Assign property no 1 to plate no 3 bResult = objOpenSTAAD.Property.AssignPlateThickness(1, 1) 'Assign specification no 1 to Plate no 3 bResult = objOpenSTAAD.Property.AssignElementSpecToPlate(1, 1) If ly / lx