Does a 1 inch step in slab require a footing

[smokiibear]

Can you state if a 1" step in a slab should have a footing? Or is a shovel footing adequate?

Also, is there code requirement for making an interior garage wall load bearing?

Thanks.

 

[dik]

I don't understand the first question and the answer to the second one is that it can be. It depends on how it's designed.

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[JoelTXCive]

1 inch or 1 foot?

Please post a sketch of your cross section.

 

[smokiibear]

Please see attached.

Sorry, my first question was written poorly. Does a 1" step in a slab need to have a typical footing, or is a shovel footing good enough?

 

[MotorCity]

The 1" step is irrelevant. The need for a foundation depends on the load, the soil properties, and the capacity of what I assume is a slab in your sketch. There is no code requirement I am aware of for an interior wall to be load bearing. What is a shovel footing?

 

[smokiibear]

The loads are the weight of the slab and 40psf of LL. The point about non-bearing wall would be nothing from the roof. A shovel footing is literally just that, a few shovel's along the line of the step, with a little extra concrete poured there. I've never seen one actually, but heard of them for years.

 

[driftLimiter]

We call your 'shovel footing' a thickened slab (I think that's what your getting at). Like @MotorCity says the 1" step is not something that might require a footing, the wall on the other hand might depending on the magnitude of the load coming through it. If it is a structural wall bearing any load at all I typically put a thickened slab there and just treat it like a wall footing for calculations.

 

[phamENG]

But make sure the soil, fill, stone, or whatever is there gets compacted. Looked at a house a while back that was cracking up - three stories built on a thickened slab, but the sand was just dumped in without compaction.

 

[JoelTXCive]

 

[smokiibear]

Thank you. Nice detail.

 

[JoelTXCive]

I had it in my folder of misc. details. I'm not sure where I got it.

It looks do-able.......except I'm not sure about the 'inverted chair'. I think the designer is just stressing that you need to maintain cover on the low side of the transition.

Actually, I just figured out... you'll have a formboard at the drop; and a chair or bolster can be nailed to the underside of the board to keep the rebar down during concrete placement.

 

[smokiibear]

Yeah....I like it.

Thanks again.