Page 890 - Chief Architect Reference Manual

Chief Architect X10 Reference Manual

Energy Heel
Knee walls

No Energy Heel
Flat ceilings

Certain conditions must be met before an
attic truss can be built:
To create an energy heel • The structure should be sufficiently wide
to allow for a loft and attic spaces.
1. In the Build Roof dialog:
• Check Trusses (no Birdsmouth); • The loft area must be on a living floor. It
cannot be on the Attic floor. See “The
• Uncheck Automatic Birdsmouth Cut; Attic Floor” on page 721.
• Specify the desired energy heel height
as a positive Raise Off Plate value. • The loft area must have Attic rooms on
both sides. See “Room Types and Func-
2. Automatically generate or manually tions” on page 414.
draw the roof planes.
• The loft area must be separated from the
3. Draw and position the first truss. See Attic rooms on both sides by Knee Walls.
“To draw and replicate trusses” on page See “Knee Walls” on page 378.
877.
• A flat ceiling in the loft area and a floor
4. Open this truss’s specification dialog below must be present.
and check Energy Heel and Force
Truss Rebuild, then click OK. See • The roof pitch must be steep enough to
“Roof Truss Specification Dialog” on provide appropriate ceiling height for the
page 892. loft area. Typical pitches for such a condi-
tion are 8 in 12 or greater.
5. Use the Multiple Copy edit tool to • The roof should bear on the walls of the
replicate the truss as needed. floor below the loft area and form contin-
uous planes from ridge to baselines.
Attic Trusses
Once these conditions are met, a roof truss is
Attic trusses, a variation of roof trusses, can ready to be designated as an attic truss.
be drawn if a plan contains an Attic area on 1. Select the roof truss in floor plan view
both sides and above an upstairs room, such
as in a Cape Cod style home. The following and click the Open Object e d i t
is a typical cross section view of a building button to display the GENERAL panel of
with attic trusses: the Roof Truss Specification dialog.

890