Page 351 - Divyank Tyagi

|
creATing forMUlA-driven MAssing 317

In the past, the ability to parametrically control objects in the massing editor was done using
reference planes and reference lines. The Revit development team introduced reference point
elements in 2010, which add another level of control to model elements. Point elements allow for
Cartesian X, Y, Z, as well as rotational control.
With all complex and parametrically controlled families, we think it’s best to understand
complex families to get the basic rules down first. In this case, the rules are the parameters and
formulas that will control a twisting, tapering tower.
To begin this exercise, download and open the file c08-Formula-Massing-Start.rfa or
c08-Formula-Massing-Start-Metric.rfa, from the book’s companion website, www
.sybex.com/go/masteringrevit2015. Open the Family Types dialog box and observe the
parameters and formulas that are included with the exercise file, as shown in Figure 8.75.

Figure 8.75
The family Types
dialog box

We will briefly describe how this conceptual mass family was created so you can get an
overview of the process and employ similar techniques on your own designs. Similar to the
steps you performed in the previous exercise, reference lines were used to generate a square
sketch at the first reference level.

c08.indd 317 05-05-2014 16:47:56