Column Mode Tutorial 4 - Solid Sawn Column Check (US)
Column Mode Tutorial 4 - Solid Sawn Column Check (US) This is the same example from problem 2 of the ASD/LRFD Structural Wood Design Solved Example Problems 2005 Edition. No loads are specified in the example problem. For the purpose of calculation, a dead load of 8000 lb and a snow load of 14000 lb will be assumed. The Sizer file (.wwc) created from going through this tutorial can be downloaded by clicking here.
4.1 Defining the Parameters 1. 2. 3. 4. 5. 6. 7. 8.
Start the program in Column mode. Select the Height field and enter a height of 15 (ft). Select Column from the Type list. Select Timber-soft from the Material list. Select Hem-Fir from the Species list. Select No.1 from the Grade list. Select 6 (in) for the width and depth of the column. Select Wet Service conditions from the Modification factors window.
Tutorial 4 – Defining Length of Column Note: Most wood columns are pinned-pinned and have an effective length factor of 1.0. Sizer has the capability of accounting for Pinned-Pinned (Ke=1.0), Fixed-Pinned (Ke=0.8), and Fixed-free (Ke=2.1) end-conditions. The factor Ke automatically changes when end conditions are specified. The factor Ke associated with a fixed-fixed column can be achieved by manually overriding the Ke specified by toggling various the end condition options.
9. Under Lateral Support for KeL, ensure that the spacing for the width and depth are both specified as unbraced, and that the end-conditions are specified as Pinned-Pinned. To achieve a Fixed-Fixed connection, input the Factor Ke=0.5 for both the Width b and Depth d of the column.
Tutorial 4 – Lateral Support Input Part 2
4.2 Loading the Column 1. 2. 3. 4. 5. 6. 7. 8.
Click load on the toolbar. Choose Dead from the Type drop-down list. Specify Axial as the load Distribution. Select the Magnitude field and enter a magnitude of 8000 (lbs). Click Add. Repeat steps 2 to 5 for the following: Snow, 14000 (lbs). In the Self-Weight dialog box select must be manually input as load. Under the load input window, ensure the Apply auto-eccentricity % from Design Settings is not toggled.
Tutorial 4 – Loading Column
4.3 Designing the Column 1. Click the Run button on the toolbar. Sizer automatically designs the member. 2. You will be asked to enter a file name for your project. 3. Click here to download a pdf of the critical analysis diagrams.
4.4 View Results 1. Use the scroll bar to look through the results. 2. To print these results, click the print button on the toolbar. Click here to download a pdf of the design results. Note: The output shown is based on the most recent U.S. National Design Specification® for Wood Construction.
Tutorial 4 – Design Check
4.1 Defining the Parameters 1. 2. 3. 4. 5. 6. 7. 8.
Start the program in Column mode. Select the Height field and enter a height of 15 (ft). Select Column from the Type list. Select Timber-soft from the Material list. Select Hem-Fir from the Species list. Select No.1 from the Grade list. Select 6 (in) for the width and depth of the column. Select Wet Service conditions from the Modification factors window.
Tutorial 4 – Defining Length of Column Note: Most wood columns are pinned-pinned and have an effective length factor of 1.0. Sizer has the capability of accounting for Pinned-Pinned (Ke=1.0), Fixed-Pinned (Ke=0.8), and Fixed-free (Ke=2.1) end-conditions. The factor Ke automatically changes when end conditions are specified. The factor Ke associated with a fixed-fixed column can be achieved by manually overriding the Ke specified by toggling various the end condition options.
9. Under Lateral Support for KeL, ensure that the spacing for the width and depth are both specified as unbraced, and that the end-conditions are specified as Pinned-Pinned. To achieve a Fixed-Fixed connection, input the Factor Ke=0.5 for both the Width b and Depth d of the column.
Tutorial 4 – Lateral Support Input Part 2
4.2 Loading the Column 1. 2. 3. 4. 5. 6. 7. 8.
Click load on the toolbar. Choose Dead from the Type drop-down list. Specify Axial as the load Distribution. Select the Magnitude field and enter a magnitude of 8000 (lbs). Click Add. Repeat steps 2 to 5 for the following: Snow, 14000 (lbs). In the Self-Weight dialog box select must be manually input as load. Under the load input window, ensure the Apply auto-eccentricity % from Design Settings is not toggled.
Tutorial 4 – Loading Column
4.3 Designing the Column 1. Click the Run button on the toolbar. Sizer automatically designs the member. 2. You will be asked to enter a file name for your project. 3. Click here to download a pdf of the critical analysis diagrams.
4.4 View Results 1. Use the scroll bar to look through the results. 2. To print these results, click the print button on the toolbar. Click here to download a pdf of the design results. Note: The output shown is based on the most recent U.S. National Design Specification® for Wood Construction.
Tutorial 4 – Design Check
