Architectural_Design_with_SketchUp

Architectural Design with SketchUp
8. This attribute calculates the area of Sheetrock on both sides of the wall. Therefore,
the formula for this attribute must be =LenX*LenZ*2. Enter this in the box to the right
of GWB_Area.
9. The GWB_Area field should now report a value of 9504 (square inches of Sheetrock
area). You can click on the button that reads “=fx” in the top-right corner of the dialog
to toggle between value view and function view.
10. Add another calculated value; this one reports the number of 4 × 8 GWB sheets that
are needed. Call it GWB_Sheets and give it the formula =GWB_Area/4608.
11. Now click on the arrow to the right of this formula to bring up the attribute’s options.
Make sure to select “User can see this attribute,” give it a readable name, and display
it as a decimal number.
12. Finally, add another attribute, Studs_Num to the list. Give it the formula
=ROUND(LenX/16+1). As you may have guessed, this attribute reports the (rounded)
number of studs for this section (assuming 16” on-center spacing). We also used one
of SketchUp’s built-in functions for this attribute (“ROUND”). Don’t forget to change
the attribute’s options so that the user can see this one, too.
13. To finish this component, let’s add one more built-in attribute from the drop-down
list: ScaleTool. This attribute lets you define which scale handles are shown to the
user. For our wall component, we only want the user to be able to stretch the wall
using the “Scale along red (X)” handle. Uncheck everything else.
14. The finished Dynamic Component should look like the following image when you use
the scale tool. All you should see is the scale handle in the red direction (the X axis).
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