Dimensioning Secrets Part 3

When dimensioning to the center of openings you can add a center line symbol and also change the line type and tick mark. On the properties of the Dimension Style you can manipulate the type of centerline symbol to use as well as the line pattern and even the type of tick mark used for center dimensions.

These changes will only apply when dimensioning to the center of objects.

Also under the dimension properties you can manipulate the how the dimension text is placed and how it is read.
Here you have a number of options for text placement.

Other properties that are worth pointing out are the Dimension Line Snap Distance where you can specify the distance between dimensions when stacking  dimensions.

Witness Line Control you can specify the gap from the object to the leader line or Fixed to Dimension Line like so...

Dimensioning Secrets Part 1

Here is a series about Dimensioning and the dimension tools available in Revit...

Dimensioning in Revit is quite a powerful tool, there are a number of tips and tricks that will help you dimension your project.

You can convert you Temporary Dimensions into Permanent Dimensionsby clicking on the little dimension icon.

The grip at the base of the Dimension leader line controls the distance away from the object your dimensioning.

The second grip located midway along the leader line controls what you are dimensioning too. You can either drag this grip to what you want to dimension (such as another object) or if you click on the grip it will toggle through the options Center of Wall - Exterior Face of Wall - Inside Face of Wall.

Below the dimension text you'll see a padlock icon.

When selected this will Lockthe dimension.

This will set the dimension distance you are so it will not change, however you can still move the object (in this case a wall) and it will move both objects (both walls at once).

Don't get this mixed up with Pinning an object which will hold it in place, locking the dimension will fix the distance but not the location, for example you can lock the dimensions of partition walls butting into an exterior wall but still be able to move the exterior wall location.

Too add or subtract dimensions to create a String of Dimensions pick the dimension and select the Edit Witness Lines tool then continuo the objects you want to dimension too.

Remember to click in the blank space to finish the dimension.