New Features for Oblique Surface Modeling in Revit 2019
To create a sloping surface in Revit 2019, you can draw slope arrows or modify the properties of the surface boundary lines. These boundary lines can be edited in both plan and 3D views. You have two main methods to define the slope:
Slope Arrow: Draw a slope arrow on the element and use its attributes to specify the slope angle and direction.
Boundary Line Properties: Adjust the slope by modifying the properties of the element’s boundary lines.
Measuring Slope Attributes
Revit 2019 measures slope-related properties relative to either the base or the top of the element, depending on the element type. For roofs, ceilings, and eaves, measurements are relative to the base. For example, “Relative Elevation” indicates the distance between the elevation and the bottom of the roof.
Conversely, for building floors, slabs, and structural slabs, slope properties are measured relative to the top surface. Here, “Relative Elevation” refers to the distance between the elevation and the top surface of the floor slab.
Modeling Multiple Slopes
Except for roofs, most elements can only have a single slope direction. To create a surface with multiple slopes, you need to create multiple elements, each with its own slope, and then align and lock them together.
For floor slabs, structural floor slabs, and roofs, you can also use shape editing tools to divide the surface into subregions, each with a different slope. For more details, please refer to the instructions on editing the shapes of floors and roofs.
For example, the church ceiling shown in the image below consists of two separate surfaces, each with its own distinct slope.
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