Autodesk CIVIL3D Tutorial - Page 673
Diameter. The, Add Dimension
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10 Add a diameter dimension that you can later use as a structure parameter. Right-click the Rim work plane ➤ Add Dimension ➤ Diameter. The command line prompts you to select circle or arc geometry. Select the circular profile on the screen. The command line prompts you to select a dimension position. Select a location on your screen that is close to the profile, but out of your way. A diameter dimension is displayed on screen as well as under your Model Parameters. The actual drawn diameter and dimension value are unimportant at this time. 11 Draw a circular profile on the Top of Riser 1 work plane. Right-click the Top of Riser 1 work plane, and then click Add Profile ➤ Circular. Following the same procedure as Step 7, draw a circular profile. You can use your center OSNAP to ensure that the center of this profile matches the center of the profile from the Rim work plane. Set the radius to be just slightly larger than the Rim work plane circular profile to ease selection of this profile. The actual radius is not important at this time. A circular profile is displayed. 12 Add a diameter dimension to the circular profile on the Top of Riser 1 work plane. Right-click the Top of Riser 1 work plane, and then click Add Dimension ➤ Diameter. Follow the same procedure as step 10 to place the dimension. A diameter dimension is displayed for your second circular profile. 13 Repeat the previous two steps to create a circular profile and corresponding dimension on the Top of Cone work plane. You have three circular profiles with appropriate dimensions. Your dimensions may look different than the following illustration. 14 Repeat steps 11 and 12 to create a circular profile and corresponding dimension for the Top of Riser 2 work plane; however, this time, make the profile radius approximately twice as large (approximately 24" radius/48" diameter). You should have four circular profiles displayed, and four corresponding dimensions displayed in the modeling area, and under Model Parameters node. Exercise 2: Defining the Manhole Geometry | 661