New Free Opening

Using the function 'Free Openings -- New Opening' free-form openings of arbitrary shape can be entered. A free opening can lie entirely within a roof surface, but may also extend beyond the outer lines such as eaves or verge. In addition, a free opening can span multiple roof surfaces.

At the top edge of the dialog box there is again the option to save the dialog box settings under any desired name so that various settings that are used more frequently are quickly available.

Type of opening: A free opening can be generated as continuous, open at the top, or open at the bottom. A continuous opening automatically penetrates all layers of the roof surface. A top-open opening penetrates from above through all layers down to the layer specified in the next field. A bottom-open opening penetrates from below through all layers up to the layer entered in the field after next. This allows creation of openings that penetrate only part of the layers. The remaining layers remain unaffected by the opening.

From top through layer inclusive: Here the layer is entered up to which the opening should be generated from above. The layer selected here is also penetrated.

From bottom through layer inclusive: Here the layer is entered up to which the opening should be generated from below. The layer selected here is also penetrated.

Line executions: For the different opening edges a line execution can be selected. This allows determining the "cut angles" of the layers and even setting offsets (staggering) from one layer panel to the next, as is also possible at eaves and verges.

All roof surfaces: With the 'All roof surfaces' switch you define a free opening that should penetrate all roof surfaces, even if they lie one above the other.

Roof surface selection: With this switch you can graphically select the roof surface that should be penetrated by the opening. This is especially important when you want to enter an opening in an area where several roof surfaces lie one above the other, but the opening should appear only in one of the two roof surfaces.