Create Structural Gable

Purpose

Design a structural gable

Steps

 

Watch video - Create Structural Gable Vents

1.  From the Truss - Design view, click Gable. From the Truss - Layout view, select Gable from the Truss Modifications menu.

The Gable dialog displays.

2.  Click Structural Gable.

3.  Define the remaining options on the window and click Save.

Gable Options

Specifications

Gable type - select Structural Gable

 

Drop TC - Select Full or Piggyback

Define these settings at EnvData > Dialogs > Gable > Drop TC StopX - 100 = Full, - 200 = Piggyback.

With Piggyback selected in this dialog and on the Piggyback dialog, any flat chord is changed to a single chord. Stacked chords are used in the piggyback section of the truss.

Set BC Zone Different - if selected, the BC Start and End length input text boxes are enabled.

Add Brg under BC Zone - create a bearing under the bottom chord according to the input Start and End length locations.

 

Studding

Size - create vertical web, girt (when specified) and louver studs (when specified) with the input stud size

Spacing - place vertical web studs according to specified spacing

Min Length - place vertical web, girt (when specified) and louver studs (when specified) allowed by the truss geometry where the stud length is equal or greater than the specified minimum length, with consideration for spacing

Direction - space vertical studs in the specified direction, as described below.

Peak Out: place a stud centered on the peak of the truss outward; additional studs are placed on center in both directions, according to defined spacing.

L to R: place studs starting from the left end of the truss, according to defined spacing. First stud is placed o.c. according the spacing setting from the inside of the non-continuous bearing.

R to L: place studs starting from the right end of the truss, according to defined spacing. First stud is placed o.c. according to the spacing setting from the inside of the non-continuous bearing.

Ends In: place studs starting from each end of the truss toward the center of the truss, according to defined spacing

Dim Out - when selected, you can define the following options:

  • H Placement - define horizontal placement; options include Left, Centered, Right.

  • Dimension - specify a dimension at which to begin stud placement.

Louver Out: begin stud placement from louver position.

1st Stud Offset: enter a number (negative or positive) to place a stud to the left or right of a peak.

Horizontal girts: define one or more Horizontal Girt length in text box. Multiple horizontal girts can be defined in the text box separated by a comma (e.g., 1-00-00, 2-00-00). Horizontal girts are placed center-lined in the Y axis from the bottom edge of the bottom chord of the truss according to defined distance.

Louver

  • Louver - choose from No Louver, Triangular, Rectangular, or Double. Different options are enabled, depending on the selection. Louvers are applied according to input dimensions.

 

Note that you can create double louver vents by using the Double option when Rectangular is selected.

This feature removes any webs in the way of the vent and turns the vertical webs on each side of the opening into structural members.

Note: Staples are permitted on non-structural horizontal members (as part of the louver).

Horz Dim - define horizontal dimension

Vert Dim - define vertical dimension

Clearance -define clearance

X-Offset - define x-offset

Y-Offset - define y-offset

  • From Bottom - measure gable louver vent locations from the bottom up.

  • From Top - measure gable louver vent locations from the top of the truss down.

  • Distance you enter for Y offset is measured from whichever option you select (top or bottom)

Sheathing

  • Material - None, OSB, or CDX

  • Size - sheathing thickness

  • Face - location for sheathing (front, back, or both)

  • Start/End - starting and ending location for sheathing

Show Hatching - click the check box to display hatching on-screen

Distance Between Lines/Line - select the distance between lines and line thickness

Note that Line Thickness does not change the line weight on screen; the changes are reflected only on the output. The Distance Between Lines is reflected on-screen.

  1. Click Save.

The gable is created and displays in the list.

  1. Click Apply to apply the gable settings and keep the window open. Click OK to apply the gable settings and close the window.
Related Topics

Create a Lay-in Gable

Gable settings