As a default on every Revit project transparent annotations
should be used. The reason is highlighted below, if dimensions, tags, keynotes,
or text are accidentally placed on top of one another than they will block out
anything below and errors can occur.
The top line of dimensions (Actual Dimensions)
is shown with full strings of dimensions indicating the actual dimensions of
the layout (too many dimensions for a real life project, but good for this
The middle line of dimensions (Transparent Dimensions)
is shown with transparent dimensions strings accidentally placed on top of one
another, but the error can be identified easily with the garbled dimension in
The bottom line of dimensions (Opaque
Dimensions) is shown with opaque dimension strings accidentally placed on top
of one another, the error is much harder to pick up without scrutinising the
dimensions and could have major ramifications on site.
Using Opaque annotations on you project certainly has its
place, especially when you have fill patterns on surfaces, having patterns
overlapping your annotation can be hard to read. It is just better practice to
have it set to transparent as default and change it to an opaque type where
As a default in Revit, when you attach a column to a roof
(or another sloped element), the top of the column remains flat. If you would
like the column top to be profiled to match the surface above you will need to
adjust one of the instance parameters.
Firstly you will need to attach the column to the sloped
surface, and then if you select the column, in the properties, go to the
‘Attachment Justification At Top’ and set it to ‘Maximum intersection’. The
column will now have the top profiled to the sloped surface.
You can also set this parameter to ‘Intersect Column
Midline’ for the connection to be on the middle of the column.
This works for the base connection as well. Once the column
is attached you will be able to change the ‘Attachment Justification At Base’ parameter
in a similar fashion.
In Revit you can attach elements like walls or columns to
roofs or floors. This process allows you to profile the tops and bottoms of
these elements without using the Edit Profile tool.
There is an anomaly to be aware of when attaching
columns. Columns remain in their attached position once detached.
In the example below I have a wall and a column that both
have the same Base Offset above Level 1. They have been attached to the floor
using the ‘Attach Top/Base’ tool.
When I select each element and use the ‘Detach Top/Base’
tool and the ‘Detach All’ option, the column’s base will remain at the floor
level, changing the Base Offset to 0. The wall will revert back to its original
base offset above the floor level.
This process works the same if the column is attached to a
roof. Columns will stay at the attached level once detached.
When attaching walls and columns, the walls are the elements
that will change their profile at the top or bottom once attached. Columns will
remain flat at the top or bottom, but move up or down to the element that they
are attaching to.
Columns don’t have the ability to ‘Edit Profile”, you would
have to use a void to profile the top or bottom of columns.