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9 minutes of reading time (1801 words)

LIM: BIM for landscape projects and professionals with Rémy NAVARRO [File]

Cover-article-LIM-Remy-Navarro

Definitions, profession, deployment, advantages, Solutions, interoperability, projects, actors, perspectives and useful resources

Land / Landscape Information Modeling, in English, the term Land translates to "Land, land, country and state". The term Landscape refers to"landscape and landscape drawing. The LIM is therefore in French the "Modeling of Landscape Information".

The LIM breaks down into two categories:

  • TheSoftscapeBrings together all the elements of life, that is to say vegetation (shrubs, plants, trees, etc.), watercourses (lakes, rivers, rivers and other water points in surface or subsoil) and terrain (surface topography and geological layer).
  • TheHardScapeRefers to the materials present in the landscape, that is to say the structures established by man (riprap, slabs, pontoon, etc.).
The set of data that we can integrate into the LIM is extremely varied.

Archive image of the 1st LIM model

LIM and the profession of landscaper / landscaper

Many companies claim to be the authors of the LIM and some have even registered the mark with the INPI, however the LIM is much older!

Stephen ervinIs the Inventor of LIM, pioneer of computer applications in landscape architecture, planning and design. Ervin is the author of numerous articles, including “Digital Landscape Modeling, a Research Program” and the book, co-authored with Hope Hasbrouck, Landscape Modeling: Digital Techniques for Landscape. Visualization (McGraw HIll2001).


Although still very shy, it is a field which is developing thanks to numerous researchers around the world and which today bears a name. The LIM would therefore be used to model the landscaped areas of projects but also theoutdoor environment models CIM.

For the part "Landscape", We talk a lot here about building projects that include a plant area requiring a landscape. This is usually one of the reasons that lead them to adopt BIM to follow the grouping.

The digital model would then contain the architectural project and everything that results from it, such as networks, electricity, plumbing, etc., but alsolandscaped areas, Correctly modeled in BIM. Do not believe that a digital model is necessarily synonymous with architecture. A street, park, square or any other landscaped space redevelopment project in a municipality can be done without an architect, and the landscaper is the agent. He will then be able to design the project in BIM, and even rather in LIM, allowing simulate growth and the needs of plants, to design a sustainable project.

Thanks to the LIM software, the professional landscape architect will no longer use the computer to create lines, layouts, symbols and dimensions of the technical drawing that he must present to his client; it will no longer add three-dimensional objects manually in order to obtain a perspective view; it will no longer redefine the forms of the landscape when creating an elevation; it will no longer manually count objects and drawings in order to obtain lists of plants. Instead, the architect will have tools to easily insert hedges and rows of plants, sprinklers and pipes, fences and paths, grounds, stairs, flower beds, etc. The architect will not insert a 2D plant symbol in a 2D plan and a 3D plant symbol in an elevation. It will simply define a plant in the landscape.e.


Some problems with the LIM will no longer have to be!
Why do LIM?

The integration of a LIM model for a landscaped area has several advantages. It has been developed to respond to several issues: 
  1. Management of data and appearances on vegetation elements.
  2. Estimation of the water consumption of plants over a period of time (evapotranspiration) and its effects.
  3. Prediction of landscape growth over the entire life cycle.
  4. Simulate development / growth: youth, period of fertility, period of death.
  5. Simulate remodeling: design changes.
  6. Simulate the seasonal cycle - behavior, demands, appearance through the seasons.
  7. Understand the degrees of shadow density (masks, shadows, etc.)
  8. Produce and share data that can be used by non-expert users (flowering season, age, CO2 reduction, etc.).
  9. Missing interaction with open source data and GIS platforms -
  10. Knowledge and management of territory data for the community and for the State.
  11. Reduce management and maintenance costs.
  12. Integration of IoT data.
  13. Better management in the event of natural disasters (land with risk of mudslides, etc.).
  14. Database of geological resources (minerals, rare earths, water, trees, plantations, agriculture, etc.) of the territory.

The advantages and benefits of LIM

The benefits of LIM tools for landscaping professionals are similar to those of BIM for architects, since they stem from the same working philosophy. The LIM provides in particular:

  • Increased productivity by reducing the repetition of tasks in different documents.
  • Greater focus on landscape design and reduction of documentation tasks.
  • Better coordination between the different professionals working on the same project.
  • Information control through a single LIM database for the entire project.
  • Better customer relations by obtaining and providing information in real time.
  • A better understanding of sustainable development in projects.

LIM dedicated technologies and solutions

Research has already been launched to build the database necessary for landscapers, in particular by Land'Act in France, and by software developers such as ArborCAD, Revit et Vectorworks in the USA. To model plants in 3D, these developers work in parametric design. That is to say, they establish algorithms which model trees according to data entered by the user, such as the desired size, the age of the specimen, its width, its habit (in tree-stem or in clump) ), and the season. Once the model has been established, the simulation will reveal the evolution and growth of plants, eventually anticipating its management by analyzing the constraints that could hinder its growth (border, pipe, building, etc.), or the interventions to be planned (for example example, cutting trees if they become too cumbersome).

Vectorworks Landmark

Vectorworks - Landmark

The most famous of the few players offering a BIM software package specifically for landscaping is Vectorworks, a design company belonging to the Nemetschek group. Their “Landmark” software has evolved considerably towards a landscape approach. Vectorworks has embarked on data creation to make “landscape information modeling” a reality.

https://www.vectorworks.net/en-US/landmark
Revit Naviate plugin

Revit and its plugins

The Revit software from the Autodesk editor allows topography modeling as well as the parametric creation of plants. Thanks to the datasets, it is possible to manage the evolution of plants. It also allows the integration of data for the use of landscaped areas. Using the plugin NAVIATE allows to multiply tenfold the possibilities of the LIM in a Revit model.

https://www.naviate.com/naviate-for-revit/product/naviate-site-&-landscaping/p-114

Lands

Lands

Lands is software that integrates the concept of LIM into its environment. Lands is based on the concept of LIM to bring added value to its platform: AutoCAD.

In addition, Lands can generate a fourth dimension: the time dimension. It allows to visualize the project at different phases of vegetation growth, and to simulate the modifications which occur during a seasonal cycle.

https://fr.asunilands.com/index.php/lands/informations/pourquoi-utiliser-lands/

LIM, IFC and Interoperability

The Scandinavian countries were pioneers in research on the IFC classification of LIM models. If you would like to know more, please refer to the appendices of this article.

  • (BFL) BIM For Landscape 2018 - Suggestions for mapping Landscape objects to IFC4 and suggestions for new future IFC objects for Landscape
  • IFCforSiteAndLandscapeProposal_v1_0.pdf

LIM projects and actors in France

Several players are pioneers in the field of LIM in France, in particular BIMtech (the company in which Rémy works) and Land'Act.

BIMtech is a French company created in 2014, specialized in BIM process management. She accompanies the project management in the integration of BIM processes within the framework of large urban projects and housing, equipment and hospital projects, from launch to operation. BIMtech now has more than 290 piloted models to his credit, including 27 LIM models under Revit Autodesk since 2014.

All LIM models include at least:

  • A 3D representation.
  • The essence of the tree or the plant.
  • Dimension of the plants (height, diameter).
  • GIS data.
  • The root protection system.
  • The year of planting.
  • Parameter for simulating growth over several years.
  • IFC Classification.

Depending on the needs of the MOA, BIMtech provides high added value services.

More informations : http://www.bimtech.fr/


French company in the field of landscape engineering, since 2016 it has been one of the pioneers in the use of LIM in France. Land'Act offers an integrated offer for all trades linked to landscaping and urban development, in a systemic and global approach in the service of "more nature in the city", in the spirit of biophilia.

Land'Act has carried out several LIM projects including:

  • Shopping and Leisure Center for INTER IKEA
  • Marina Giovata for BOUYGUES
  • Forest management project for SMAPP

More : https://land-act.fr/lim-landscape-information-modeling/

What are the prospects for development?

The proliferation of BIM projects and IoT data opens up new perspectives in the field of LIM. More and more landscape agencies are integrating LIM models with a view to improving the quality of projects and reducing the operating costs of buildings.

The LIM will contribute to a better integration of plants in projects, and consequently to a reduction in the environmental impact of cities. BIM and LIM provide an answer to the problem of global warming with the possibility of creating carbon sinks in cities!

CHU de Tours - LIM model | BIMtech

Remy NAVARRO

Graduated from a Bachelor of BE and BIM Project Management at CNAM Paris, I spent my first 6 years on construction sites before entering a BIM design office. In 2014, during an “operation / maintenance” research project, I discovered BIM.

Today, I work at BIMtech as BIM Coordinator on urban, housing and hospital projects ranging from 20 to 000 m².



File name : IFCforSiteAndLandscapeProposal_v1_0
File size : 578 kb
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File name : Landscape-Information-Modeling
File size : 1 mb
Download the file
File name : BFL - BIM-For-Landscape-2018 --- Suggestions-for-mapping-Landscape-objects-to-IFC4-and-suggestions-for-new-future-IFC-objects-for-Landscape
File size : 47 kb
Download the file

Souces des illustrations: land-act.fr - bimtech.fr - landsrl.com - landarchbim.com

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comments (8)

This comment was made by the moderator on the site

If you have any questions, I am available to discuss.

Remy NAVARRO
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thank you Remy for this excellent article

Youness EL BENNISSI
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Thank you very much, yet another area just waiting to emerge. Another great article

Jean-Marc Group
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The thank you box

What did you find most appealing to / interested in?

Remy NAVARRO
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What interested me the most is the potential that all this will bring to the management of nature from a distance.
Anticipate planting at 10 years, 20 years, 30 years ..., plan interview teams (humans then robots), diagnose ...

What interested me the most is the potential that all this will bring to the management of nature from a distance.
Anticipate plantings at 10 years, 20 years, 30 years ..., plan maintenance teams (humans then robots), diagnose the state of plants in real time (temperature, pollination, state of maturity of fruits, diseases, treatments ...)
In your article, your images show landscaped spaces: the current small-scale LIM is ideal for this, but my vision for the future is to bring nature into the city through the big door by multiplying its surface area and density. The LIM of the future will prevent fires, promote the renewal of plant species (then animal species), manage air quality and lower its temperature ...
Huge, it's huge how this area will evolve. Just like BIM in an urban environment, LIM will revolutionize our green spaces, then our fields, our rivers and our forests, but let's be careful, let's not go too far: Mother Nature manages itself much better without our help.
Oh yes Remy!

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Jean-Marc Group
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Hello Mr. Navarro,
At Géomédia, we are also developing the subject. We created a new link via the IMX export in order to create a link from the autocad blocks and the Infraworks object library in order to have the exact 3d representation ...

Hello Mr. Navarro,
At Géomédia, we are also developing the subject. We created a new link via the IMX export in order to create a link from the autocad blocks and the Infraworks object library in order to have the exact 3d representation of the layout of Autocad plants and urban furniture and the good orientation.
This makes it possible to create a 3d model in a few minutes from Autocad and Covadis data (3d modeling of park and urban areas).

cordially

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Lionel perrin
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Hello,

Very good popularization of the subject, bravo!

Unfortunately, on our concrete projects, Landscape objects are too often misclassified in IFC in an IfcSite "catch-all". However, the IfcSite is a spatial representation that ...

Hello,

Very good popularization of the subject, bravo!

Unfortunately, on our concrete projects, Landscape objects are too often misclassified in IFC in an IfcSite "catch-all". However, the IfcSite is a spatial representation that contains the IfcBuilding and others (??). If it is established that the IfcGeographicElement contains landscape objects (tree, terrain ... as defined by IfcGeographicElementTypeEnum in IFC4), what about other non-building and non-landscape objects such as a border, a candelabra?

These are objects that can be found in multiple classification systems but which are difficult to organize in an IFC tree structure for future use.

Thanks in advance,

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Damien LEFRANC
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Excellent article # Rémy NAVARRO!
Bravo for this BIM Verdissent vision!

Joao Pereira Dias
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