Access these settings via Env Data > Layout Settings > Piggyback. See Create Piggyback Truss for more information.
Field Descriptions
Setting
Description
Piggyback Type
Select one of the following:
Raise Bottom Chord of Piggyback - extends the top chord down to rest on the flat top chord of the base truss, with a gap for purlins. This is the default setting.
Drop Top Chord of Base Truss - drops the top chord of the base truss to allow for purlins and cap truss to sit inside the base truss.
hoa = O/A yHeight of Base; hbc = Height of Base above BC;hpb = height of PiggyBack; dft = Dim of Flat Top
This setting populates the How defined drop down box in the Piggyback Dialog to define the following:
hoa = Overall height of base
hbc = Height of base above bottom chord
hpb = Height of Piggyback
dft = Dimension of flat top
Dimension to create cap
Populates the Dimension drop down box in the Piggyback Dialog window to specify a dimension based upon the How Defined choice
Separation distance between BC of cap and TC of base truss
Separation distance between the bottom chord of the cap truss and the top chord or the base truss in the Piggyback Dialog window. Listed as Purlin Gap.
Gap distance between OH of cap and TC of base truss
Gap distance between the overhang of cap and the top chord of base truss in the PiggyBack Dialog window. Listed as OH Gap in the Piggyback Dialog window.
Piggyback Stud Spacing
Spacing between piggyback studs
Piggyback Stud Direction
Direction of piggyback studs. Choose from Peak Out, L to R, R to L, Ends In
Size TC
Populates the Piggyback Dialog TC Size for bottom chord depth to be member depth specified. Enter values as 02-08, 03-08, 05-08, 07-04
Size BC
Populates the Piggyback Dialog BC Size for the bottom chord depth to be member depth specified. Values should be entered as 02-08, 03-08, 05-08, 07-04.
Size Web
Populates the Piggyback Dialog Web Size for the web depth to be member depth specified. Values should be entered as 02-08, 03-08, 05-08, 07-04.
TC OH Butt cut
Define top chord overhang butt cut.
BC Butt cut
Define bottom chord butt cut.
g = gable; t = truss
Value of g places gable studs at specified on center spacing of gable studs for piggy back cap. Value of t places a king post in the piggy back cap truss.
Draw cap offset from base on layout
True displays the piggy back cap truss offset from the base truss in the overhead view of the layout so that the cap can easily be selected and seen.
