Celsa Steel Service is reinforcing concrete and the world of BIM
The Turbine table project
In this project with the general contractor Skanska in Sweden, Celsa Steel Service delivered the reinforcement and supplied shop drawings and 3D models, which Skanska used when assembling the reinforcement.
The project called Turbine table (or Turbinbordet in Swedish) is situated in Örtofta, Sweden. The concrete construction is approximately 17x7x2 m3 large, and is heavily reinforced (120kg/m3). This led to a rather complicated construction regarding the reinforcement.
This project concluded in a 3D Tekla BIMsight project from Celsa, accompanied by 2D assembly drawings to indicate different rebar in different layers. The Tekla BIMsight model was used as a basis of discussion at early stages of the project, which helped to identify and prevent errors, and attend to what would have been practical difficulties during the assembling on-site. It also helped to discover what types of rebar groups could be prefabricated and delivered as a prefabricated reinforcement element.
Improving rebar measurements
The main goal was to use the Tekla BIMsight project instead of traditional drawings to reinforce the construction, with some assistance from our 2D assembly drawings. This would have been achieved with Tekla BIMsight 1.9 with the new rebar measuring function. But since the version wasn't available at the time, they had to add measurements to the 2D drawings as well.
But the Project manager at Skanska expressed that if the measurement tool in Tekla BIMsight was more satisfying, they could reinforce this complicated construction, with only the help of Celsa's 3D-model and the use of Tekla BIMsight, which was the goal from the beginning. Now that is possible.
Tekla BIMsight project as the basis of clear communication
Celsa produced the 3D models so it became natural to continuously use the Tekla BIMsight project as basis for discussion.
BIM Engineer Daniel Isaksson from Celsa says that the main benefit of having the 3D models for this project was during meetings. All disciplines could sit around one model and address their opinions and suggestions to make changes for the better. This led to corrected errors, and several changes in the reinforcement to make the assembly practically feasible.
"Another benefit is that you have just one 3D model, instead of maybe 20 drawings. This makes it much easier to quickly get a good overview of the project and what has to be done in which stage," Isaksson continues.
Helping customers into the BIM world
Isaksson elaborates how Celsa uses Tekla BIM products: "At Celsa we are using Tekla BIMsight in our own production to help prefabricate complicated welded elements, but the main use of Tekla Structures and Tekla BIMsight is to use it to correct errors in traditional 2D drawings, find prefabrication solutions and create assembly instructions."
They also want to help their customers to enter the world of BIM in order to help them lower their total cost of reinforcement. Celsa has an ambitious goal: "We strive to be in the forefront and to push the utilization of BIM and 3D models at the construction sites and in the consultant’s offices."