then…
If you want to…
accept the detected value for Capacity, or enter a value for
Capacity. Specify a size for Height, and click
for Width.
You can change the height and recalculate the width re-
peatedly until you achieve a desirable duct size.
calculate size for oval or rectangular duct based
on a fixed height
accept the detected value for Capacity, or enter a value for
Capacity. Specify a size for Width, and click
for Height.
You can change the width and recalculate the height re-
peatedly until you achieve a desirable duct size.
calculate size for oval or rectangular duct based
on a fixed width
click
and select a single outlet device. The flow value of
the outlet device is specified for Capacity. Click
.
calculate duct size using a single outlet flow
device that is not yet connected to the duct
click
and select multiple outlet devices. The Capacity
value is increased by the combined flow values of the selected
devices. Click
.
calculate duct size by using multiple outlet flow
devices that are not yet connected to the duct
Specifying a Calculation Method for Duct Sizing
on page 182.
7
You can select Use Rise/Run and enter a value in degrees to continue drawing the duct at an
upward or downward angle.
8
Click Use Routing, and then select a routing method:
then…
If you want to…
select an elbow angle.
draw with a predefined elbow angle
select User Defined, and specify a point for the elbow
angle. You can draw either with or without the Compass.
define your own elbow angle in the drawing area
enter a value for the elbow angle.
define your own elbow angle in the dialog
select Show Catalog for Elbow Angle. To optimize
drawing performance, elbow angles from the catalog
are hidden by default.
update the Elbow Angle options to select elbow
angles from the catalog
select Hide Catalog.
hide the Elbow Angle options from the catalog in
order to increase drawing performance
click the Lock icon next to Elbow Angle. The next seg-
ments you draw will have the same elbow angle.
draw with only the selected elbow angle
click the Preferences icon, and then click the Routing
tab. Deselect Automatically create riser at new Elevation,
draw with both an elbow angle and a rise or drop
to a specific elevation
and then click OK. Enter an elevation and draw the
segment with an elbow angle.
click the Preferences icon, and then click the Routing
tab. Deselect Preview Elbow when Compass is Enabled
or Preview Elbow when Compass is Disabled.
save drawing performance and not display the el-
bow as you draw with a specified elbow angle
198 | Chapter 6 Drawing HVAC Systems
Summary of Contents for 235B1-05A761-1301 - AutoCAD MEP 2010
Page 1: ...AutoCAD MEP 2010 User s Guide March 2009 ...
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Page 242: ...Modifying the elevation of a duct 224 Chapter 6 Drawing HVAC Systems ...
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