Yes, a couple ways. People tell me though that my descriptions are random and nonsensical.... so.

One either add a parameter to the column that you can type in what you want the reifnforcemnt to say
or
Model the rebar and schedule it then.

Other can go into more detail about how to do this. I suck at that part. But it is possiable

I don't know if I really understand the question. If you want the schedule to display rebar information, you would have to put it in. Create a Shared Parameter for the column which says Rebar (or something). Create the schedule and add the Rebar Parameter. If you make it a text parameter, you can fill in everything you want.

How far do you want this to go?
You can also create a Key Schedule for Structural Columns. Create Rows for the Key Value, for instance for different rebar diameters (8mm, 12mm, 16mm, 20mm, and so on). Create extra Parameters for weight/m and that sort of thing.
Create Shared Parameters for Amount of Bars and add that to the Column Schedule. Also add the Diameter Parameter from the Key Schedule and the Weight per m. Add a Parameter to the Schedule for the amount of rebar and you can let it calculate the total rebar weight. Etc, etc.

See the attached file, Column Rebar Using Key Schedule.

Off course, this is not really modelling the Rebar.

pssst, no file attached

I think what Ali wants is that modeled rebars can be identified according to the host element, meaning the column.
AFAIK it's not possible without manual input. but I'm not in front of Revit, so I will have to check this.
You may use a shared parameter for rebars i.e. Host, and input the column ID manually.

maybe API could do this.

The schedule mark parameter can be used for this. Each new rebar host provides a new schedule mark to the rebar. All rebar placed in the same host should have the same value. I say should because the parameter is editable. The actual value does not come from the host. It comes from other rebar in the host. So if you place a rebar in a beam and all other rebar have a schedule mark of 10 then the new bar will have the schedule mark of 10 also. There is also a right click option for rebar to select all bar with the same schedule mark. This allows for easy selection and copying. You can also use it as a grouping for schedules.

Thought so, but since Alex made a comment about doing this without the actual modelling of Rebar I thought I'd elaborate somewhat on that.
I never model rebar, since, well for one thing I don't have RST :laugh:, but also because my projects are in general too small to do this with a positive ROI. Instead I created some DC-families to represent the modelling and have them scheduled to calculate the rebar needed.

Dear All,

Let me explain my question in a more clear way. Pretend we have 16 columns at grid location (A1, A2, ... B1, B2,...).
Each column has different number of rebar with different diameters. In a column schedule we can show the location of the column by a parameter called "Column Location Mark" which clearly shows the grid location of the column. Now what I need is to have a column showing the total number of rebar for each of these 16 columns.

Or for beams, how can I have Revit, calculate the top rebar, bottom rebar and face rebar in three different columns in a schedule for each of the beams in the project.

One more thing: A column has 8 rebar placed in 2 sets of "fixed number=3" and one set of "fixed number=2" distributed on the four faces of the column. When tagging the reinforcement in this column, since there are three sets of rebar, the tag only tags one set (ex:3-16MM bars). How can make these three sets of rebar act together while being tagged. I mean when I tag the reinforcement in this column, it shows 8-16MM bars, although they are in 3 sets.

I hope you understand my questions. In case of any confusing point in my explanation, please let me know.

Thanks from all of you,

Wish you all the best.

Regards,
Ali Akbar

You will need to do a multi-category schedule to schedule both bars and colums together. Secondly, there is no way to get the 3 sets to work as one...the way we have faked it is to have a tag with a user input paramerter that we would set to 8 for all of those sets and then just tag it once.

Also you will need a parameter that you can give to both the column and the bars to get them to schedule together. There is no way to get the bars to recognize what column they are in other than by user input parameters.

IMHO this is the next enhancement that Revit needs: ability to share parameters between the host and hosted elements.

Yes, this would be an amazing feature...