Working with wall foundations and footings

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All foundations are hosted and placed automatically on the base of a wall.

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When a wall is selected,

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the wall foundation will remain associated to the wall.

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When working with retaining walls,

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a single wall foundation can be added to the wall and then the wall can be split.

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The top and base level is then adjusted to suit the terrain.

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Notice that the wall foundation would automatically

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change its level based on the wall.

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So you can see here that we have our main building structure and

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we also have this retaining wall structure to the north of the building.

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We're going to start by placing out some wall foundations underneath the walls here

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and then we'll go and transition across to

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placing some retaining wall foundations for our retaining wall

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to help us understand this a bit better. We're going to open up a plan view

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in the project browser under structural plans, go ahead and open up the site plan.

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We'll now tile these views side by side

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to do this. We'll go ahead and select the view ribbon

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and on the view ribbon, go ahead and select tile views.

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We now have the 3D view out on the right hand side here.

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And of course, our plan view on the left,

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I'm going to begin by zooming up on this wall on grid A

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and of course, I'll just rotate the model round so we can see the same wall in 3d.

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And I'm gonna begin now by placing out a bearing footing underneath this wall.

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So when you're placing out wall foundations, there are two types.

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We have a bearing which is equally spaced around the wall center line.

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And we also have a retaining footing where you can set a separate hill and toe length.

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So the foundation will be eccentric about the wall centerline.

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So let's now start by placing out our wall foundation

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to do this. We'll go ahead and select our structure ribbon

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and on our structure ribbon, of course, here,

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you can see that we have our foundation panel

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note here that we have our wall foundation.

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We'll go ahead and select all foundation

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in the property's pallet in the type selector.

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You'll see that we currently have our bearing footing 36 inch by 12 inch.

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We'll begin by using this family type

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to place this. We'll go into our site plan

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and I simply select this wall here

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and you can see here that the foundation is placed. It's in hidden detail.

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And of course, in our 3d view, you can also see the foundation,

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we'll place another foundation in the top left of our structure.

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So you can see here along grid E, we have this other wall.

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Again, I'm just going to pan the 3D model across.

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So we can actually see that wall in 3D.

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And this time,

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I'm going to place the wall foundation by selecting the wall in the 3D view.

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And again, here,

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you can now see that the foundation is shown in hidden detail in our structural plan.

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And of course, it's featuring on our 3D model.

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So to summarize the placement of these wall foundations, it's very simple.

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We can select the wall in plan section

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ation or 3D view.

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Let's now focus our attention to the retaining

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wall structure to the north of the building.

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Before we do this, let's exit the wall foundation command

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to do this on the context ribbon, we'll simply select, modify.

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So in the 3D view here,

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we can see that we have topography and here you can see that we

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have this flat area of topography which

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is obviously much higher than the building level

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to retain that we have this retaining wall structure.

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You can see here that we have different wall segments with the depth, varying

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our intention here is to place our retaining foundations at the base of this war

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rather than placing these wall foundations singly.

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We're going to use the select multiple option on the ribbon

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to do this.

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We'll go back to the structure ribbon and once again select wall foundation

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notice on the context ribbon, we have this option here to select multiple

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in the proper panne in the type selector.

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We're now going to change our wall type

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from wall foundation bearing footing to retaining footing.

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The difference between the two is that the retaining

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footing will have a separate heel and toe length.

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So the retaining footing can be eccentric underneath the wall.

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The bearing footing would always be centered about the wall centerline.

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So we'll now go ahead and make a selection set of our walls.

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You can see now we have all of our walls in that selection set

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and to finalize the placement on the context ribbon,

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we can go ahead and select finish.

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You'll now notice that our wall foundations are placed.

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Let's also look at these in plan.

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And again, here, we can see we have an eccentric foundation,

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so we have a toe length here and a heel length over here.

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Let's now exit the wall foundation command to do this.

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We'll go ahead and select modify on the context ribbon.