Graphics Programs Reference
In-Depth Information
It's worth pointing out here that the sizes used for this layout are based on
theconnectionsizesandthesettingsforductsizeslocatedintheMechanical
Settings dialog box. There is another important consideration at this point.
The designer/drafter must ensure that the default settings for the main
and branch ducts are high enough above the air terminals and associated
equipment to generate the layout; otherwise, the Layout tool cannot
generate a layout, even if the layout is created with placeholder ducts. This
can be achieved in two ways: either by selecting the Settings button on the
Options Bar (shown earlier in
Figure 10.21
)
or by selecting the actual sketch
lines of the solution, which allows the user to manually choose the offset.
Using Manual Duct Routing
Using the automatic tools may seem too limiting or even pointless to an
experienced design drafter who already knows the sizes and routing that
must be used. These tools are great for a quick mock-up or presentation
of a design that is more conceptual. However, with experience, most users
eventuallysettleforavariety,sometimesfornobetterreasonthan“achange
is as good as a rest.” Sometimes, however, the manual tool is much more
efficient, especially when connecting different areas into a system or laying
out runs back to a rooftop AHU.
To begin manual duct routing, do the following:
1. Click the Duct tool on the Home tab on the ribbon, and then choose the
type and its various options from the Properties palette, as shown in
