tailieunhanh - Problem J - Beam On Elastic Foundation

Concrete E = 3120 ksi Poissons Ratio = To Do Determine the moment diagram under combined dead plus live loads and the maximum downward displacement. Note: Dead load shown does not include beam self weight. | Problem J Beam On Elastic Foundation Concrete E 3120 ksi Poissons Ratio To Do Determine the moment diagram under combined dead plus live loads and the maximum downward displacement. Note Dead load shown does not include beam self weight. wDL klf wLL klf PDL 250 k PLL 150 k 1 Typical K 50 k in typical 20 6 24 Beam Section Note Our intent is that you try this problem on your own first. After you have solved it on your own you can step through our solution if desired. If you have problems trying to create the model then follow the steps in our solution. 1 Problem J Solution 1. Click the drop down box in the status bar to change the units to kip-ft. Kip-ft 30 2. 3. 4. From the File menu select New Model From Template. This displays the Model Templates dialog box In this dialog box click on the Beam template dialog box In this dialog box button to display the Beam Type 1 in the Number of Spans edit box Type 20 in the Span Length edit box Uncheck the Restraints check box Click the OK button 5. Click the X in the top right-hand corner of the 3-D View window to close it. 6. From the Define menu select Materials. to display the Define Materials dialog box. 7. Click on CONC in the Materials area to highlight select it and then click the Modify Show Material button. The Material Property Data dialog box is displayed. 8. In this dialog box Verify is entered in the Weight per Unit Volume edit box. Click the OK button twice to exit all dialog boxes. 9. Click the drop down box in the status bar to change the units to kip-in. Kip-in 30 10. From the Define menu select Materials. to display the Define Materials dialog box. 11. Click on CONC in the Materials area to highlight select it and then click the Modify Show Material button. The Material Property Data dialog box is displayed. 12. In this dialog box Type 3120 in the Modulus of Elasticity edit box. Verify .2 is entered in the Poisson s Ratio edit box. Accept the other default values. 2 Click the OK button .

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