Use the Combined Footing form to define the size of the footing, the loads and load size on the footing, the footing thickness and the soil modulus beneath the footing.
Plan Dimensions.
Along X Direction. The Left and Right Edge Distance edit boxes can be used to specify the distance to the edge of the footing from the center of the adjacent load. Accept the defaults or specify values by typing directly in the edit boxes.
Along Y Direction. The Top and Bottom Edge Distance edit boxes can be used to specify the distance to the edge of the footing from the center of the adjacent load. Accept the defaults or specify values by typing directly in the edit boxes.
Load Spacing and Size. The column loads are placed along the X or Y grids at the specified Spacing. The Size edit box can be used to define the size of the square used for punching shear calculations.
Load Values. Input P (axial) and moments (Mx, My) in each direction for both dead and live load patterns for each column load location.
Properties. Input the Footing Thickness and the Subgrade Modulus in the units specified. Soil Modulus is input as Force/Length/Area.
TIP: The Calculator feature can be used to assist with mathematical operations during data entry. Place the mouse pointer/cursor in an edit box, hold down the Shift key and double click the left mouse button to access the form.
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Access the Combined Footing form as follows:
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