Adjusting Sloping Roof Beams in Revit
During Revit modeling, it is common to encounter the need to slope structural roof beams. For projects requiring high precision, using standard rectangular beams can lead to uneven and visually unappealing roofs. In such cases, modifying the beam family is necessary to achieve the desired slope.
1. Begin by opening a standard beam family. Switch to the right elevation view, then draw a reference line within this view. Lock the endpoints of the reference line to the vertical and horizontal reference planes of the beam, as illustrated below.
2. Add an angle parameter between the reference line and the horizontal reference plane. Next, create a hollow extrusion in the shape of a triangle that extends along the reference line and the reference plane. Make sure to lock each side of the triangle to the corresponding reference line or plane, as shown in the figure.
3. After completing the extrusion, switch to the reference elevation view. Lock both ends of the hollow extrusion to the respective ends of the beam. Use this hollow extrusion to cut the rectangular beam, resulting in a trapezoidal beam with a sloping top surface, as depicted.
4. Save the modified model as a new family and load it into your project. Adjust the angle parameter of the trapezoidal beam to match the roof slope. (You can create a profile to measure the angle between the sloped roof and the horizontal plane.) By fine-tuning this parameter, you can achieve a smooth, sloped roof surface, as shown in the example.
Summary: This process demonstrates how to create sloping roof beams in Revit by editing beam families to fit the roof’s angle accurately.
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