LINEAR Solutions 26 for Revit

Details on "Building Detection…"

Information on the Building detection ... area.

Start LINEAR Building in this area and specify which data is to be transferred during building detection. You can also select additional options for detection here.

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Project Tab ➤ Discipline Architecture ➤ Analyse Tab

Building detection Linear Revit

Building detection ...

Starts the building detection with LINEAR Building, with which the entire building structure is transferred to the program. In LINEAR Building you can further analyze the building and carry out load calculations or design and insert radiators or panel heating systems for your CAD model.

Ground Approximation

Here you can define how exterior walls are analyzed in relation to the surrounding ground. Depending on the option selected, areas of an exterior wall of different sizes are detected as being adjoining the outside air.

Constant Ground Level: If your model does not contain ground topography or you do not want to analyze it, you can use this option to specify a constant ground level and define this more precisely under Reference Level (Ground Level).

Analysis of the Topography: If your model contains a ground topography, it can be analyzed with this option.

Ground views Linear Revit

Reference Level (Ground Level)

If you have selected Constant ground level for ground approximation, you can specify here on which level the intersection with the ground is situated. If necessary, create a new work level.

Curtain Wall Detection

Defines how facades with transparent areas are transferred to LINEAR Building.

Merge Window Areas: Transfers all transparent components as a single window.

Individual Window Areas: Transfers each transparent components as an individual window.

Further Options

Restrict to Active View

Enabled: When capturing a building in a 3D view with LINEAR Building, only the elements currently visible in the model are captured. Selectively deactivating elements can improve the detection speed for larger models.

You can hide various elements of a model. For example, you can deactivate the visibility of a storey on the project tab so that the associated elements are not included in the building detection. In the Revit Visibility/Graphics Overrides dialog, you can influence the visibility of individual elements—and thus the detection—by disabling categories, elements, or linked projects. Alternatively, you can also use the Temporarily Hide/Isolate function in Revit and deactivate categories such as Skeleton Frame Construction, Structural Columns, Beam Systems, Structural Connections and/or subcategories thereof for detection.

Save Component Information

Enabled: Next time the building is detected from LINEAR Building, information on component segments is stored to the MEP spaces of the Revit project. If a component is to be selected in the model in LINEAR Building using the Zoom CAD Element in Drawing or Show CAD Element in Drawing functions, only the part of the component that is relevant in the current structural context is highlighted.

Disabled: After deactivation, a query follows whether already saved component information in the project should be deleted. The next time the building is detected from LINEAR Building, no component information will be saved. If a component in the model is to be selected in LINEAR Building using the functions Zoom CAD Element in Drawing or Show CAD Element in Drawing, the whole component is selected regardless of the current structural context.

Automatic Shaft Detection

Enabled: During building detection with LINEAR Building , shafts and in-wall installations are automatically detected from the architecture. The detection of these elements does not require the placement of an (unoccupied) MEP space if this option is selected. In LINEAR Building , adjacent elements such as walls are automatically distinguished correctly from exterior components.

Disabled: The building detection with LINEAR Building is done exclusively on the basis of the MEP spaces placed in the model. If the option is deactivated and no MEP spaces are placed in shafts or in-wall installations, adjacent elements such as walls are automatically marked as external components. If you want to place MEP spaces in shafts, you should deactivate the Occupiable option in the LINEARProperties to ensure correct detection.

Use IFC Room Geometries

If you use a link to an IFC file for your MEP planning in Revit , MEP spaces cannot always be placed geometrically correct. This means that rooms cannot be filled with MEP spaces up to the room boundaries. As a result, errors can occur during building detection with LINEAR Building .

Enabled: Alternatively, the geometry of the rooms from the IFC model is used to detect the building. The prerequisite is the existence of an MEP space within the IFC space. Even if the MEP space has no extension, it must exist as an element for the transfer and storage of data.
Attention: If an MEP space with its own geometry is available and no other IFC space is found for a room, the MEP space is used for building detection.

Use Template Types

The use of the so-called template types can be activated if there is no or insufficient data for thermal properties and/or layer structures in the CAD model, e.g. in the case of linked IFC models or insufficiently defined layer structures in linked CAD models. You can then use the Template Settings dialog, which you can open via the button, to map Revit component classes (e.g. floor slab, storey ceiling, interior wall) to the corresponding LINEAR Building component types (e.g. FS, SC, IW). U-values are predefined for this mapping, which can be adjusted as required.

Enabled: The building detection is based on the mapping that you define in the Template Settings dialog.