How to Draw Continuous Wall Foundations in Revit
CONTINUOUS WALL FOUNDATION: Wall foundations are members of the structural foundation category. You can place these foundations along structural walls, in either a plan or 3D view. Wall foundations are constrained to the wall that they support. They move with the wall when you move the wall. Before placing the foundations, open a view that already contains structural walls.
1. Click Home tab -> Structural panel -> Foundation drop-down -> Wall Foundation.
2. Select the desired walls in the view.
3. Optionally, use Join Geometry to join wall foundations with isolated foundations or with other wall foundations.
NOTE: Foundation walls are added below the level in which they are drawn. Therefore, if you add a foundation wall in Level 1, it is added below Level 1 and will not be visible in the Level 1 plan view. To see the foundation walls in a plan view, create a new level below Level 1, for example, Foundation Level. When you create a new level below Level 1, you will also be able to see the foundation walls as an underlay (grayed out) in Level 1. Alternatively, adjust your view range to see the foundation walls in Level 1.
Isolated foundations are standalone families that are part of the structural foundation category. Several types of isolated foundations can be loaded from the family library, including pile caps with multiple piles, rectangular piles, and single piles.
ISOLATED FOUNDATION:
Procedure:
1. Click Home tab -> Structure panel -> Foundation drop-down -> Isolated Foundation.
2. Click Place Isolated Foundation tab-> Element panel, and select an isolated foundation type from the Type Selector drop-down.
3. Place the isolated foundation in either a plan or 3D view.
FOUNDATION SLABS:
The Foundation Slab type has 3 more foundation-specific values than a regular structural floor has. These additional values, which are instance parameters displayed in the Instance Properties dialog, are: Width, Length, and Elevation at Bottom. Using these values, an analysis tool can distinguish between a standard structural floor and a foundation slab. Foundation slabs may be used to model structural floors on a grade, which do not require support from other structural elements.
1. Click Home tab -> Structure panel -> Foundation drop-down -> Foundation Slab.
2. Click Create Floor Boundary tab -> Element panel -> Floor Properties.
3. In the Instance Properties dialog for type, specify the structural floor type, and click OK.
4. Click Create Floor Boundary tab -> Draw panel -> Boundary Line and then click (Pick Walls) to select the walls in your model.
5. Click Extend into wall on the Options Bar if you want the offset to be measured from the wall's core.
6. Specify an offset for slab edges in the Offset text box on the Options Bar.
Note: Instead of picking walls you can sketch a foundation slab. Use the sketch tools on the Create Floor Boundary tab -> Draw panel to form the boundary of the foundation slab.
7. Click Create Floor Boundary tab -> Floor panel -> Finish Floor.
8. Click the foundation, and select the desired Foundation family type on the Family drop-down list.
Note: Foundation slabs are added below the level in which they are drawn. Therefore, if you add a foundation slab in Level 1, it is added below Level 1 and will not be visible in the Level 1 plan view. To see the foundation slab, adjust your view range.
Note: Structural Slabs are different than Foundation slabs in their Structural Usage properties.
You can add a structural slab to the building model by clicking the Slab tool in the Structural tab of the Design Bar. Creating a structural slab uses the same interface and functionality as creating floors.
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Source: https://sites.google.com/site/revitonline/home/training-course-for-beginners/structural-elements/85-foundation
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