How do you make a surface in autocad?

How do you make a tin surface?

Exercise 1: Creating a TIN Surface

1. Click New.
2. In the Select Template dialog box, browse to the tutorial folder. …
3. Click Home tab Create Ground Data panel Surfaces drop-down Create Surface Find.
4. In the Create Surface dialog box, for Type, select TIN surface . …
5. In the Properties table, specify the following parameters: …
6. Click OK.

How do I select a surface in AutoCAD?

Press and hold Ctrl to select faces, edges, and vertices on composite solids. If the History property of the composite solid is set to Record (On), the first “pick” might select the history subobject.

What is a tin surface in AutoCAD?

A TIN surface comprises the triangles that form a triangulated irregular network. TIN lines form the triangles that make up the surface triangulation. To create TIN lines, Autodesk Civil 3D connects the surface points that are closest together.

What is a TIN surface?

Triangular irregular networks (TIN) have been used by the GIS community for many years and are a digital means to represent surface morphology. TINs are a form of vector-based digital geographic data and are constructed by triangulating a set of vertices (points).

How do you create a surface in Civil 3d?

Exercise 1: Creating a TIN Surface

1. Click New.
2. In the Select Template dialog box, browse to the tutorial folder. …
3. Click Home tab Create Ground Data panel Surfaces drop-down Create Surface Find.
4. In the Create Surface dialog box, for Type, select TIN surface . …
5. In the Properties table, specify the following parameters: …
6. Click OK.

What data sources other than contours could be used to create a TIN surface?

You can create a TIN surface from features, such as points, line, and polygons, that contain elevation information. Use points as spot locations of elevation data. Use lines with height information to enforce natural features, such as lakes, streams, ridges, and valleys.

How do you make a surface in Rhino?

Draw a surface

1. Plane. Draw a rectangular planar surface.
2. PictureFrame. Draw a rectangular planar surface with a bitmap texture. …
3. PlaneThroughPt. Fit a rectangular planar surface through points.
4. SrfControlPtGrid. Draw a surface from a grid of points that represent surface control points.
5. SrfPt. …
6. SrfPtGrid. …
7. ExtrudeCrv. …
8. EdgeSrf.

What is a surface in Civil 3d?

A surface is a three-dimensional geometric representation of an area of land, or, in the case of volume surfaces, is a difference or composite between two surface areas. Surfaces are made up of triangles or grids, which are created when Autodesk Civil 3D connects the points that make up the surface data.