Creating Toposurface

Toposurface is a surface-based representation of the topography context supporting a project

It’s not modeled as a solid in Revit, but appears as a solid in 3D section view
Toposurface only can create on Site Plan

There are 3 ways to create Toposurface:

1. Placing points at specific elevations
2. Using a linked CAD file with lines or points at varying elevations
3. Using a point file generated by a civil engineering application

Placing Points

Activate Site plan
Massing & Site tab > Model Site panel > Toposurface

Place Point select by default

Options bar - Elevation: -300

1st layer must be lower than the top surface of floor

Turn on Crop Region
Make sure all the points pick within the crop region

Options bar - Elevation: -1500

Options bar - Elevation: -3000

Create the 3rd layer of the toposurface

Surface panel > Finish

Change to 3D view

Linked CAD File

Create a toposurface based on the linked CAD drawing

Insert tab > Link panel > Link CAD

Open C13-Site Link.dwg

Current view only: Uncheck
Import units: Auto-Detect
Positioning: Auto - Center to Center
Place at: Level 1

Change to 3D view

Massing & Site tab > Model Site panel > Toposurface

Tools panel > Create from Import - Select Import Instance

Select a import 3D model

Click Check None
Select C-TOPO-MAJR and C-TOPO-MIJR

Tools panel > Simplify Surface

Input 250 points

Click Finish on Surface panel

Query

Determines the identity of an import instance and the layer on which is resides

Select the imported instance

Import Instance panel > Query

Pick the line want to query

Dialog box show the layer name

You can choose to hide in view