Roof Components - Collar Beams

The "collar beam" function allows entry of collar beams with various connections to the rafters. The following options can be specified:

With the selection list at the top of the dialog box you can choose existing settings. Using the disk icon you can save the current setting under the same name or a new name. Via the management icon you can create new settings, also by adopting existing settings, or modify or delete existing settings. See 'Save settings' in the 'General Help' manual.

Identification number: The identification number determines the material of the collar beams. Using the control at the end of the field, you can navigate to the database and select a material.

Width: Width of the collar beams.

Height: Height of the collar beams.

Bottom edge height of collar beams: The collar beams can be positioned by their bottom edge using an absolute height. Using the control at the right end of the field, you can switch to the graphic view. There you draw a line and the program then displays a vertical section through the entire building at that line. With the crosshair you can now select a point at which the bottom edge of the collar beams should be placed. The height resulting from this is then displayed in the field and can still be modified.

Lateral offset: Without offset, the collar beams lie with their axis directly under the axis of the rafters. Using the "lateral offset" they can be shifted sideways from this position.

Connection collar beam - rafter: The collar beams can be connected to the rafters with different joint types. You can check and change the values used for creating the operations with the control at the right end of the field.

Drill diameter collar beam -- purlin: If the collar beam passes below or above a purlin, a borehole between the two timbers can be created. Enter the desired diameter here.

Countersink drill diameter: If a countersink is also to be created, the corresponding diameter can be entered here.

Countersink depth: Depth of the countersink.

Drill offset: By default the hole is created on the axis of the purlin. With this value the hole can be offset by the entered amount.

There are several functions for placing the collar beams:

2 roof surfaces: With this function you select the two roof planes between which the collar beams are to be created. Then select the area of the rafters that should receive the collar beams.

1 roof surface: With this function you select the roof plane where the collar beams are to be created. Then select the area of the rafters where the collar beams are to be created. Finally, select a line at which the collar beams should end and a distance to it.

Ridge-valley rafters: With this function you select one or two ridge or valley rafters. If you select two ridge or valley rafters, they must lie exactly opposite each other. Then both are connected by a collar beam. If the ridge or valley rafters are not exactly opposite, no collar beams will be created. If you end the selection of ridge/valley rafters after the first rafter, select a line at which the collar beam should end.