Its easy to create grids in Revit using DynamoBIM.
If you use design script then it only takes two nodes.
The image below summarizes this process.
The key is to use range values that I discussed in a previous post here and then multiple grids will be generated.
This example only shows grids in one direction. If you wanted grids in the other (east west) direction then simple create these nodes again and switch the x and y values!
Enjoy I hope this helps.
You may be asking yourself why would I want to create grids using dynamobim because you may not want DynamoBIM to "monitor" the grids locations.
This may be true but that does not mean you should not use DynamoBIM. In other words, you could use DynamoBIM to help create the grids then cut the link with DynamoBIM from your Revit model. Really? Yes! I do this all the time. Remember DynamoBIM is an amazing parametric tool used for computational design but it is also just an amazing Revit modeling tool.
I ask myself these questions on every modeling task in Revit............................
How long does it take for me to model the grids/(any element) myself in Revit?
How long does it take me to create a DynamoBIM graph to create the grids/(any element) in Revit?
Then I use the method that takes the shortest amount of time....