Summary
Highlights
The project involves modeling a steel hangar measuring 20m wide by 24m long, composed of five simple two-slope porticos. The beams are IPE 360, the traverses are IPE 330, and the posts are IPE 220. There is a 5m x 5.70m opening on the front gable. The portico height is 6m, and the roof slope adds 1.20m, making a total height of 7.20m. The design includes specific material properties and load cases.
The project uses N65 and C66 standards for design. The steel used has a characteristic resistance of 235 MPa. Permanent loads include the self-weight of the structure and 12 daN/m² for cladding. Exploitation loads include 5 daN/m² for dust and 10 daN/m² for maintenance. Wind loads are based on region 2 of Morocco with a base pressure of 68 daN/m² at 10m, in a normal, unmasked site with horizontal topography.
The chosen profiles for the project include CPs 200/100 for purlins and TPs 200 for side rails. The video will later demonstrate how to model these components.
The modeling will be done using Robot software for a spatial portico study. The first step is to prepare the file and customize it. This includes deactivating the grid and saving the project. Task preferences are set, with dimensions in meters, forces in Newtons, and displacements with increased precision. Steel material is set to 'acier 24' with a characteristic stress of 235 MPa. Design norms for the structure are CCM66, Eurocode 3 for assemblies, BL91 for concrete, and DT 13.12 for geotechnics (though foundations won't be modeled). Load norms include CM66 for permanent loads and MV65 for wind loads, with RPS for seismic regulations in Morocco.
Construction lines are defined. Along the X-axis, there are four repetitions of 5m spacing. Along the Y-axis, there are four repetitions of 6m spacing, totaling 24m. Along the Z-axis, there are lines at 6m and 1m (referring to the roof pitch). These lines define the geometry of the hangar.
Load cases are generated: self-weight (permanent), cladding (permanent), dust (exploitation), and maintenance (exploitation). The software will automatically generate combinations for these loads due to their large number, simplifying the design process.
The necessary profiles for the project are added to the Robot software. These include IPE 100, IPE 220, IPE 330, and IPE 360. Additionally, HEA 100 is added for secondary beams and UPN 120 for purlins. Corners with dimensions of 50x50x5 are also added for bracing elements. This completes the preparation phase, making the file ready for modeling.