Friday, January 12, 2007

Fixed "Map" Grid Overlay

Got a call from a friend today describing a situation he was sorting through. He needs a gridwork to overlay on his project that defines the project much like a map defines each grid cell by the letter on the vertical and horizontal borders. Just like the National Cadd Standard Uniform Drawing System (NCS/UDS) suggests for our sheets. In this case the project is so large that they want this grid to help find parts of the project. So this grid needs to appear in all views possible automatically.

The obvious issue with just using Revit grids in the project itself is that they compete with "real" grids for structural steel etc. The answer? We came up with nesting a separate Revit project with the grid layout. Guess we'll see how well it works as it goes forward. The grid below is a mockup and each square is 150 ft. x 150 ft.

The catch? Since you probably want grid cell labels you need to set up a view for each scale so you can add some text in between each grid. So for each scale view that you need to see the grid in the host project, you create a view and annotation for it. Then in the host file you override the visibility graphics for each view to assign the correct scale view.


tchuffart said...

To achieve the same goal, is't iti possible to create that grid in a revit file then export the view in DWG ans import that dwg in the revit project.
Put it in a specific workset to manage visibility in the different views.
Also putting that DWG in the view instead of the project may let you decide to show the grid over the project or below everything. But you have to put it in each view separately.
In that way you shouldn't have to create different sizes of text for different scales.

Steve said...

I like the fact that the Revit grid lines show up automatically in all plans as long as they extend high or low enough. The annotation may not be required in all views so it might only amount to a couple different scales.

We considered the dwg route too but felt that dealing with view range or importing/copying the dwg file into multiple views would be a hassle.

Is it possible, sure...pick your poison 8-)


Steve said...

oh...and this way it is "pure" Revit 8-)

coreed said...

i think keeping things pure Revit should always be your first option. even if it's not the
best($$$$$) option but works.
like you said chose your poison

Anonymous said...

I would ask how one can show/not show the grid in all floor plans. I started a project and set my grids on site plan. then create the levels. I found that the first two floor shows the same grids while the others 3-7 shows only the horizontal grids no vertical or inclinded. Have any idea why this happend. Thanks.

Anonymous said...

thanks i got it. all the grids now shows. The gird header was below the height for the horizontal gird.