To create a tank model using the parametric wizard, use the following procedure.

1. On the Model ribbon tab, select the Structure Wizard tool in the Create group.
   
   The STAAD.Pro Physical Modeller Structure Wizard window opens.
2. In the Templates panel, select one of the following tank model options:

   Option	Description
   Modular Tank Physical	Uses continuous, physical wall and slab elements across interior tank partitions.
   Modular Tank RCDC	Includes discrete wall and slab sections for use with concrete design in the RCDC application. This model can have stepped walls.

   The tank properties are displayed in the Properties panel. A dynamic, 3D view of the tank appears in the view window area.
   Tip: The same view controls from the main STAAD.Pro Physical Modeler interface are available here.
3. Define the general geometry of the tank structure:
   1. Type the No. of compartments.
   2. Specify the overall dimensions of the tank structure typing the Total length, Total width, and Height of walls values. For Modular Tank RCDC models, the last parameter is Total height of walls.
   3. Specify the thickness of the tank elements by typing the Base thickness, Separator wall thickness, and Outer wall thickness values. For Modular Tank RCDC models, the last parameter is First level wall thickness.
   4. Type the Toe to edge of walls distance used around the outside base.
4. (Modular Tank RCDC only) To specify a stepped wall:
   1. Check the Two level wall option.
   2. Type the Second level wall height.
   3. Type the Second level walls thickness.
5. (Optional) If the compartments have internal columns and beams:
   1. Check the Has columns option.
   2. Type the Number of columns per compartment.
   3. Specify the column size by typing the Column width and Column depth values.
   4. Specify the beam size by typing the Beam width and Beam depth values.
6. Select the Material to use for the structure. This is typically concrete for tank structures.
7. (Optional) To include a roof slab:
   1. Check the Include roof slab option.
   2. Type the Slab thickness.
   3. (Optional) Check the Simply supported slab for a non-integral roof slab.
8. Specify the support conditions:
   1. (Optional) For tanks with internal columns, check the Pile below column option to use pile supports at those columns.
   2. Select the Support foundation method:

      Option	Description
      Piles	For a concrete slab acting as a pile cap, specify the No. of supports along length and No. of supports along width values as well.
      Soil	For concrete slab bearing directly onto soil.

   3. (Optional) Check the Allow tensile forces option if applicable to the soil.
   4. Specify the Soil Modulus value.
9. Specify the loading conditions:
   1. Select the Load condition type as either Load Group or Load Case from the drop-down list.
   2. (Optional) Check the Include self weight option to account for the tanks self-weight.
   3. Type the Roof surcharge (dead load) and Roof Live load values for tanks with roof slabs as necessary.
   4. Type the Fluid density used in all tank compartments.
   5. Click in the Compartment fluid height field and then type the level of fluid in each compartment, measured from the base of the wall. This value is used to calculate the hydrostatic pressure on the base and walls in each compartment.
      Tip: Select the Display Loads tool to display the fluid levels in the view window.
      
      
10. Select the model template insertion point:
    1. Select the Reference Point tool in the Model group on the Home ribbon tab.
       
       
    2. Click any point on the model in the view window.
       Tip: Use the view controls to rotate, pan, or zoom the model as necessary.
    3. Select the Reference Point tool again to exit the selection mode.
11. Select the Transfer Template tool in the Model group on the Home ribbon tab.
    
    The template model is inserted into your current physical model.