Stair Nosing, Treads, and Stringers

The Cast-In-Place Stair has several different parameters for customizing it. Depending on the stair, Nosing, Treads, and Supports can all be used in various combinations.

stair02_main

Nosing
Located under Run Type (within the Monolithic Run family), Nosing can be tricky to get right, as it requires the use and modification of a sometimes glitchy Profile. The Stair Nosing – Pan profile is the only Stair Nosing Profile that Revit provides.

stair02_nosing defaultsstair02_edit profile

To edit it, locate it in the Project Browser (under Families, Profiles) and right click on the family. This is how you modify loadable families that are part of System families.

The Profile family will then open. By default, the Annotations are usually turned off, but I usually turn them back on to see what is going on.

The trick with modifying this Profile lies with the vertical line along the Center (Left/Right) axis. I found that my Nosings were most likely to join correctly to the stair if this line was not modified. If I needed to extend it, I simply drew another line. These results were not consistent, but very frequently if I modified the line, the Nosing would not join properly to the stair:

stair02_nosing unjoinstair02_nosing family01

Also, do not have the Profile applied to the Stair before you have finished editing and loading it into the Project, since the Profile will not update once applied to the Stair. It seems that Stairs, and especially Nosings are a bit glitchy.

Treads (and Risers)
Like Nosing, the Treads are part of the Run Type. They are relatively easy to figure out, with a Thickness, Profile, and Material. Risers are are quite similar, if have the need to entirely clad your stair in a different material.

stair02_treads

Treads can also have a Nosing, like these granite block stairs:

stair02_treads and profile

Frequently exterior concrete stairs will have a no-slip tread that does not cover the entire tread face. The Stair Tread could be used to create a no-slip tread, but it will cover the entire width of the stair and requires some finagling with the Stair height, since the Tread Height effects the overall Stair Height (shown on left).

stair02_treads_no slip

Another option would be to use a loadable family hosted to the step face (but not a face-based family). Then the tread could be held away from the sides (shown on right, above). This option seems to work quite well, since families that are hosted to faces will stick even if the family is moved.

Stringers
The initial Supports parameters are directly within the Stairs Type Properties, but they also have nested parameters under Support Type once the Support has been chosen.

stair02_stringer parameters

If done correctly, a Stringer can look like a Stair Grade Beam, or short Side Wall. But since it is a stringer, it has limited graphical options. Once created, you can modify it slightly by using Tab to select it. There are 3 options for adjusting how its Ends Cut and Trim.

stair02_stringer optionsAnd if that still doesn’t work, you can always use a Wall or Model-In-Place instead. Also, these Stair Families can be downloaded in the next post [Custom Shapes and Types].

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2 thoughts on “Stair Nosing, Treads, and Stringers

  1. I’ve used a similar trick for recessed non-slip nosings too. In the solution I found (online somewhere) the nosing is actually a railing family, and each strip is a baluster. It works really well and you don’t have to place each nosing.

    PS, haven’t you gone metric now you’re in Europe?…. ;-)

    • A railing, using a baluster, huh, that is interesting. Could you send me one? I’d like to see that. I’ll be doing some railing posts eventually, so I’ll have to include that.

      Since I am not actually employed anywhere yet, I have not switched over to metric. I might if I needed to start using it…

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