Energy Modelling with Revit and BIM

The process of design

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2D into 3D

If a 3D model does not exist, we are able to create one, however the maximum benefit of our service is gained when we integrate with the design team of a project. This then enables design teams to make changes and have that model exported to Littleshrub for further analysis.

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3D design

Once the 3D spatial model is complete, Littleshrub are then able to augment this model by populating it with thermal design parameters.

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Iterated until complete

Steps 1 and 2 can then undergo a number of iterations until a satisfactory outcome is achieved for the objectives of the building.


In recent years, Computer Aided Design (CAD) that is used to design new buildings has rapidly been moving from 2D to 3D design. The ability to model in 3D and convert the model back to traditional 2D designs have come with it countless advantages without significant time hinderances.

The ability to check spatial data conflicts such as overhead heights of staircases or how a structural component might obscure line of sight are just a few examples of the improved analysis these tools bring. To further augment things, spatial 3D data can be combined with analytical data that can be used for a range of analysis such as deflection of structural beams or other performance characteristics. But can these tools be applied to energy efficiency simulations? The answer is yes!

With the help of proprietary tools, LittleShrub is able to work directly with Revit to determine the energy efficiency of a building. These tools are compliant with the requirements set out by JV3 of Section J and are able to be used to determine compliance to the energy efficiency requirements of the building code.

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the benefits of an integrated energy efficiecy design process

If you are using Revit to design your buildings, you are able to get the maximum benefit from our services, however that’s not to say that you must use Revit to use our services. Integrated design services are becoming part of our future. Modern computing power has given us the ability to work as dynamic teams across geographical divides and companies. LittleShrub are are the forefront of this integrated approach when it comes to energy efficiency.

Unlike our competition, we don’t take your 3D CAD model and convert it into another program. This duplicates effort and increases cost. Instead, we are able to integrate into your design team and directly use your models to complete our energy modeling. This greatly reduces time and cost especially when it comes to last minute design changes.