Multilevel Stairs Help

[avalencia60]

Hi all, I am doing a low rise residential building and I need to do the stairwell with Multilevel stairs property. My base stair is monolithic and I extended the first riser to make the landing integrated with the stair, but I needed a negative offset to match the floor level. When I use the multilevel property, Revit copies the stair but without the negative offset (See attached image). I want to know how to copy the stair with offset using multilevel stair.

Thanks in advance, Alex

[patricks]

I would extend the top tread to create your 2nd floor and higher landings, but don't extend the bottom one. Just use a floor there. It won't look 100% correct in section at the bottom, but you can get it close. Just leave that for the details, and maybe plop a filled region in the section view showing that condition (where the bottom floor meets the stairs).

[avalencia60]

I would extend the top tread to create your 2nd floor and higher landings, but don't extend the bottom one. Just use a floor there. It won't look 100% correct in section at the bottom, but you can get it close. Just leave that for the details, and maybe plop a filled region in the section view showing that condition (where the bottom floor meets the stairs).

I have extended both riser in order to make the landing continuos with the stair, but this condition makes me offset the stair downward one riser and the multilevel property doesn't recognize this offset

[Alfredo Medina]

Do a normal U-shaped stair without any offsets or extensions, going from level 1 to level 2. Then, apply the multi-level parameter. As per your section view, one of the two sides will be the landing, the other side will be a floor element.

It is not possible to do this with both landings being part of the stair element, and going to multiple floors, as you are trying to do.

[SkiSouth]

Examining your image, I cannot be sure where the issue is for your question. IF the issue is that one of the floor to floor heights varies (as in the first floor), and the remainder of the floors are identical, then originate your multi-run stair on the first identical requirement, say from the second floor up. Create a single floor to floor u shaped stair from the first to second floor.

As Patricks has said, there will be a small gap between the floor extension and the next run, due to non-overlapping boundaries on the stairs (image with one landing). Also correct is Alfredo's observation about the floor being one of the landings.

A work around is to use two "L" shaped stairs. You can then overlap the landings. You'll have to manually copy the stairs level to level, but simple enough to do. However, this will result in square landings (formed edges) at the landing of each stairs, not sloped...

[Alfredo Medina]

In addition, since one of the two sides must be a landing and the other side a floor, you can make the floor and the stair match by adjusting the value of the stair's Stringer Carriage Height parameter, and then the slab's thickness, so that they meet at the intersection; then make the joint an invisible line.

For example: assume that you make the stringer carriage height 12 centimeters. Then, take a vertical measure at the joint to find out how thick the slab should be to match the stairs at the intersection (in this example it would be 14.15 cms.); then make that distance the new thickness of the slab. Then make the joint invisible with the linework tool. See illustration.

[patricks]

It is not possible to do this with both landings being part of the stair element, and going to multiple floors, as you are trying to do.

Sure it is. You can enlarge the top landing of the stair in the sketch to create the 2nd thru top level landings, but the lowest landing would still need to be a floor element. There would also be a slight gap between the landing and the bottom step of the next stair riser going up, in order to avoid overlapping lines in the stair sketch. But you could take care of this in the details (structural should detail this anyway IMHO).

[Alfredo Medina]

That is interesting. However, both the floor plan and the section view show some issues. That is why I still would rather do this with floor elements in one side, and a regular u-shaped stair on the other side.

[patricks]

That is interesting. However, both the floor plan and the section view show some issues. That is why I still would rather do this with floor elements in one side, and a regular u-shaped stair on the other side.

I might do that, too, in some cases. But the problem with monolithic stairs is that you end up with the top tread overlapping your floor slab, and since stair geometry can't be joined to anything else :roll: you have to use line work on EVERY SINGLE PLAN to make it look right, which is a major pain.

As such I try to enlarge the top of any monolithic stair sketch to make it be the landing when ever I can.

And yes, I have had this very issue confuse contractors and think there is one more riser than there should be. Having to chase around plans and hide a bunch of linework, especially every time the stair changes, is so un-Revit-like, and could potentially become a liability.