Graphics Programs Reference
In-Depth Information
Chapter 10
Mechanical Systems and Ductwork
Ductwork, like pipework, is a system family through which the Autodesk
®
Revit
®
MEP platform can calculate airflow rates and pressure drops on
any correctly defined system. Ductwork also provides the graphics for the
traditional “drawn” documentation and the variety of ways this can be
represented on a drawing sheet at different stages of a project, regardless of
whether the duct is presented as a
single line
at concept design or as a fully
coordinated
double line
for a construction issue.
The three main types of ducts are rectangular, round, and oval. They are the
basis for your design and documentation. There are two ways of using ducts,
either with the Duct tool or the Placeholder Duct tool. Placeholders allow the
designer to rough in layouts in single-line mode.
Althoughatfirstglancethisseemssimilartoaviewthatissettoacoarselevel
of detail, the placeholders display
only
a single line, regardless of the level of
detail that is set. In addition, placeholders do not create fittings when a duct
run is drawn, although they do show a symbolic representation where rises/
drops occur. However, they still have the use of all the design tools that an
engineer requires, allowing the duct to be sized based on airflow, elevation,
and so on. All these duct types, whether placeholder or normal, connect to
air terminals and a variety of mechanical equipment. They also host duct
fittings and accessories. By using the fittings and accessories available with
the standard installation, the user can create supply, return, and exhaust
systems with very little additional thought.
During your implementation, however, you should also consider the benefits
of creating additional duct types that suit the way you work and your
company's standards.
In this chapter, you will learn to do the following:
• Distinguish between hosted and level-hosted components
• Convert placeholder ducts into ducts with fittings
• Use the various duct routing options
• Adjust duct fittings
