Designing a Cantilevered Wall

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Designing a Cantilevered Wall

1.Assuming you’re not using Wall Wizard, click the Insert button.


2.In the Choose Add Method dialog click Cantilevered Wall.


3.The screen will automatically display the Calc Info tab.  Here, you must select the desired Building Code and Unit system, and you may enter data in the Wall Specific Information fields if desired (Job Title, Job Number, etc.)  The Wall Specific Information is used to populate the title block when printing.


4.If you’re just getting acquainted, you may want to use the View tab to enter initial geometry, and then go on to the other tabs, where you will find your initial entries will have already been placed in the appropriate fields.


5.Alternatively, you can skip View tab and just go directly to the other tabs to enter all your data.


6.The General tab collects information about the wall geometry, the soil, and some design decisions.


7.The Loads tab collects information about the vertical and lateral loads acting on the wall. (Be sure to use both the Loads and the Seismic sub-tabs when appropriate.)


8.The Stem tab is used to thoroughly define the stem and its reinforcing.  Before using this tab please carefully read the procedure in the User’s Manual. You design the stem starting at the bottom, where the moments and shears are highest. By default, the starting “Design Height” is zero. Note that the “Design Height” is the height above the footing where you want to check the design. At each Design Height you can change material, thickness, or reinforcing, to economize your design as moments and shears decrease. There should generally be at least two feet between any such changes. Usually only two Design Heights will be required: At the top of the footing, and at the top of the dowels extending up from the footing.  If the wall is high, say over eight feet, you may want to check it higher, say at six feet. Rarely would you need to specify more than three heights to check.


9.The Footing tab is used to define the footing (including the key if one is used), to specify the associated reinforcing, and to make some design decisions regarding how the program will handle the calculations for sliding checks.


10.At any time during the process of entering the wall design data you can view the right screen tabs to see a Results summary, and a tabulation of Resisting and Overturning Moments, and the Tilt calculation.


11.Once sufficient geometry and loading data have been entered, the Construction tab will display a schematic drawing, and the Wall Loading tab will display color-coded loading diagrams. The Diagrams tab displays diagrams of the applied and resisting shears and moments in the stem.


12.When you’re done, click Save to save your Project File with the latest design.