Monolithic Interior Footing

[bdoughty]

How do you add a footing under a monolithic slab? When I create the foundation I get the exterior footings, but need some interior footings and don't know how to do it.

[Tommy Blair]

I use a slab with the linetype set to the proper one.

[Bob Levin]

I also use the slab tool to create a footing of concrete and then change line type to dashed or whatever you prefere Bob Levin

[Farrell]

If you have load bearing walls on this slab, open the wall dbx, general tab, check foundation. Set the foundation from the foundation tab.

[bdoughty]

I did get a footing below an interior wall(using your suggestion Farrell), but I can't seem to get the footing to show up on the foundation floor view. Any suggestions for that?

Thanks Tommy and Bob, I hadn't thought about trying that.

[brbowhunter]

Same problem for me as well... Would like to know the same thing....

[Tommy Blair]

If you used the slab tool to make your footing, click on the slab you made in plan view, be sure you have footing checked and set the depths. When you check footings, you'll see the footing in plan view. Also, when you click on the main slab tool, notice the child tools that come up. One will have a slab with footing.

[bdoughty]

Thanks Tommy, I got that to work. That's probably what I'll be using from now on. I'm still curious if it's possible to get the footing below a wall (that Farrell suggested) to show up in the foundation plan view when using a monolithic slab, but I guess it isn't possible.

[lbuttery]

remember that if you have a porch on floor 1 the footers show on floor 0 in plan mode.

Maybe the same happens for slabs ?

Lew

[Farrell]

The best I've been able to do is place walls on the main level, move down to the foundation level, use invisable wall sized to the width of the desired footing, and align with above.

[frwillia]

I frequently need to have footings beneath loadbearing walls in the basement, at other times I need a footing beneath a post that is a different size than the footing that comes with the post when you use the post tool.

In both instances I use the slab tool (with out footing), set it to a top height that just matches (cut and paste from the structures dbx works just fine - but wouldn't it be cool if one could just link the two together so footings added like this would automatically follow changes?) the bottom of the basement floor slab. Set the length, width, and depth as required, and while I'm at it, change the line type to match the foundation wall footings.

I make seperate "foundation" and "basement" plans. The former is dimensioned using a convention the excavating and foundation contractor desires. The basement floor plan then has only the dimensions necessary to add the interior walls, place the floor beam, and also can show the basement electrical plan with out it getting too cluttered.

Fitch

[Tommy Blair]

Here is a picture that might help. It is basically the same as what Fitch said. Do not use invisible walls to show a footing. This could cause problems down the road. Hope this helps. You might have to put cursor on the picture and view at regular size to read it.

http://users4.ev1.net/~tommybps/beam%20plan.jpg