Add a pad to a toposurface to create a level area.
This video demonstrates the following:
Add a pad element in Revit when you want to create a flat area on a toposurface . Pad elements are like a floor elements, except they will modify the toposurface within the boundaries of the pad. The toposurface will be adjusted so it touches the underside of the pad.
For example , you want to add a paved patio area to the yard area of the site. A pad is used to model the patio.
Like other elements , a pad is constrained to a level. In a section view , a level is added to define the top elevation of the patio. Once the level is added, switch to a plan view in order to add the pad. A site plan is used because you need to see the contour lines of the toposurface to help you position the pad for the patio in the correct place.
On the Massing and Site tab, click Building Pad. A pad is a sketch based element. Use the tools on the draw panel to sketch the boundary of the patio. Slope arrows are used in the sketch when the pad needs to slope. When you're done sketching, click the check mark to finish the pad.
You can see how the contour lines of the toposurface are altered where the patio is located. In a 3D view it is easier to see how the pad changes the toposurface . When the level of the patio is adjusted , the patio moves and the toposurface is adjusted at the same time.
The elevation points of the toposurface are edited if you need to have a smoother transition from the toposurface to the pad.
Use pad elements to model the conditions where your design interacts with the toposurface in the model.