NOTE
When you connect a pipe segment directly to another segment in a pipe run (
on
page 255), the software displays the actual slope value for the pipe segment. For more information on this
feature, see
Slope Value Displayed in Constrained Piping Layouts
on page 257.
Sloped Piping
The sloped piping feature in AutoCAD MEP expands catalog content and pipe fitting routing preferences to
support gravity-based piping designs for sanitary drain, waste, vent, and sewer/storm drainage systems. For
example, you can lay out the main of a drainage system with a 1/4” per foot slope and connect several
branches with different slope angles based on the distance and height from the main. The system can
generate possible layout solutions for sloped systems based on points you specify in the drawing, the slope
value, and the allowable
on page 267 for the pipe fitting used.
Sloped piping layouts model real-world piping requirements. Fittings are inserted based on the orientation
of the pipe segment. As a result, pipes fit flexibly into couplings. AutoCAD MEP rotates the orientation of
an elbow (or other fitting) around the attached point based on the centerline of the sloped pipe. The software
lays out pipe and fittings with a horizontal slope and transitions between sloped and vertical pipes eliminating
the need to manually calculate angles.
AutoCAD MEP applies slope in the Z direction of the current user coordinate system (UCS) in a drawing.
You create sloped piping systems using elbows, tees, wyes, or other fittings that connect an angled segment
to a horizontal segment. The next example shows a rise/run ratio of 3/10 for the sloped segment where the
elbows are rotated to accommodate the slope value.
Sloped segment perpendicular to horizontal
segments (front view)
You can create slopes in straight runs if you have the appropriately angled fittings. In the next example, a
45-degree elbow connect a 45-degree sloped segment to horizontal segments.
Sloped pipe segment, 45 degrees (side view)
AutoCAD MEP supports the design of sloped connections by using wyes (laterals) or angled tees to connect
a branch to a main. It inserts angled tees/wyes at the correct orientation to connect a sloped branch to a
sloped main. You can also choose an eccentric fitting (with different diameter openings at each end with
different centerlines) or a concentric fitting (with different diameter openings at each end with the same
centerline).
256 | Chapter 7 Drawing Piping 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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