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BIM design pilot experience in a WWTP

FYSEG’s and the other speakers’ experience made clear that the costs saving that the BIM methodology entails for the construction and maintenance of infrastructures needs a greater effort in the engineering design stages. During the season, data of examples where the use of the BIM methodology meant a 46% increase in the cost of engineering were provided, which was more than compensated in the construction phase when there was a 9% saving in the execution of the work, which ultimately led to a cumulative saving of 7% in the final engineering and construction budget. When there is better engineering in BIM, there are less errors and unforeseen costs in the construction process.

FYSEG has carried out a BIM experience in the Detailed Design for the extension of Miranda de Ebro WWTP.

Miranda de Ebro WWTP

The project was modeled in 3D from the laser scanner point cloud of existing elements, creating topography from the point cloud obtained by the flight of FYSEG’s drone, creating new parametric elements and modeling new equipment and networks in MEP.

In addition, the 4D or the work’s evolution over time has been carried out within the project, where you can see the different remodeling stages of the current WWTP, from the current situation to the completion of the work.

Another important aspect is the effort made to perform all the works’ quantities using BIM associating them with the cost of the installation (5D) by transposing the 3D model through the IFC4 (Industry Foundation Classes) converter to a program of quantities and costs, for which it is necessary to define correctly all the elements of the work.

In order to accomplish these works, it has been essential to modify the internal organization of the personnel and the BIM information. For an adequate exchange of information, without errors and under the premise of single data, all information has been arranged in a single archive or CDE (Common Data Environment). It has also been necessary to modify the normal FYSEG folder structure to a functional folder structure based on the AEC (UK) BIM protocol.

As you can see, the development of this detailed design has been a radical change in the way of working on a real project for a company like FYSEG. This change has been possible thanks to the personal effort and the R & D & I grants the project has received from the Basque Government.

Service BIM applied

3D Modeling Topography (Drone)

3D Modeling Existing Elements

3D modeling Existing elements (laser scanner)

3D Modeling New elements

4D Modeling

5D Modeling