Used to create and manage roof designs which are then associated to floors in the project. The Roofs dialog is the entry point into roof design, enabling the other Roofs tab tools.

• Ribbon: Energy Simulator > Roofs > Roofs

There is no limit to the number of roof designs your project can have. Each roof design has a separate object in the OpenBuildings Energy Simulator Project Tree hierarchy containing its own sub structure. The Roofs dialog is mainly used for creating new roof definitions, associating them to floors, and to initiate the roof design tools. Designing detailed roofs (roof physical geometry) requires additional steps using the roof design tools in the Roofs the Create Roof Element and the Modify Roof Element ribbon groups.

Setting	Description
Building	Lists the buildings on the project site. Roof designs associated with the buildings selected from the drop-down list are listed.
New	Used to create a new roof model. Clicking New opens the Add New Roof dialog, where the new roof design is specified. Setting Description Description Used to enter a description for the new roof. The description entered here appears in the OpenBuildings Energy Simulator Project Tree dialog’s entry for the new roof. Height Defines the elevation of the new roof relative to the project’s Z axis origin. Note: A default value is provided that corresponds to the highest floor elevation in your project building. Drawing Used to enter the path to the referenced roof drawing document (typically a DGN model or DWG/DXF file). The referenced roof drawing document contains the graphical elements representing the roof and openings or rooflights. These referenced elements can then be used to Setup or associate the roof to your project building. [...] — You can browse the disk with the Select drawing dialog On it, the Files of type drop-down list contains the DGN, DWG and DXF file types as well as an All files (*.*) type. You can reference any type of document including PDF files, graphics files (*.tif, *.jpg, etc.) and Word (*.doc) files. Note: Distances in a DWG/DXF file are defined in drawing units rather than meters or feet. You must know the units which were used to create the DWG/DXF file. OpenBuildings Energy Simulator establishes the distance units based on the extent of the DWG/DXF file’s drawing width and height. Model Used to select a DGN model from the roof file that is referenced into the project. Note: The Model drop-down list contains all the DGN models contained within the referenced (the browsed roof Drawing). OK Creates a new DGN model in the project from the referenced roof file. The DGN model is made active along with the Roofs tab. Cancel Closes the Add New Roof dialog without saving changes. BBSENERGYANALYSIS ROOF CreateNew
Design	Makes the selected roof design active (opens the DGN model), and enables the roof design tools on the Roofs tab.
Delete	Deletes the selected roof. This deletes the graphics from the building model, restores all room surfaces that were changed when the deleted roof object was added, and removes the roof object from the OpenBuildings Energy Simulator Project Tree.
Setup	Used to associate completed roof designs to floors existing in the project building or buildings. Clicking Setup opens the Set up roofs for building dialog (see Setup (Roof) ).