Changing the Offset of a Column Affects its Grid Intersection in the Graphical Column Schedule

I have seen some users report that they change the offset of a column, and then when they go to their Graphical Column Schedule either the column is no longer reported on an intersection or they receive a message that "Some columns in the project are excluded from the graphical column schedule view.". Most often this occurs because the new column position is no longer within the extents of the grid range.

Let's take a look at an example. Here everything looks as expected. The column is placed on A-1 and so reports it in the Graphical Column Schedule:

Now let's say we want to drop the column and lower the top offset by 1'. We don't receive any warnings, but now the Graphical Column Schedule is reporting the intersection as a distance from the other grid line present instead of A-1:

 

So why is this? We can open an elevation to find out. In this view we can see that when the column is dropped by 1', it falls below the extents of Grid A. The extents of Grid B still cross through the column, so the schedule reports that relationship instead:

 

Now, let's drop the column by 3'. Here's where you will see "Some columns in the project are excluded from the graphical column schedule view.". When the column drops this distance it no longer crosses the plane of any grids, so there is no grid to measure from to report it in the schedule.

 
 

I hope this helps!

Comments

[Chris Hubbard]

Kathryn,

Does this mean that columns placed by face on a grid will not display on the schedule? This is what we are observing currently. This is so common it should be able to dispaly. BTW have not tried in 2011 yet.

[Kathryn Langan]

Hi Chris,

Would you mind elaborating on what you mean by placing the columns by face?