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The weight of each structural element is directly related to the weight of the material and the dimensions. According to NBR 6120, the specific weight of reinforced concrete is 25 kN/m³. If the slab, beam and column are made of this material, simply relate it to the dimensions of the structural part. In this video, I show the formulas for each concrete element step by step. 📌 MINICOURSE TRACE THE TRACING - Learn how to calculate the concrete mixing ratio step by step http://estruturasebim.com/comece-por-... 👉 Visit our website and secure your materials https://estruturasebim.com ⭕ EQUIPMENT AND BOOK: 💻Notebook I use to design WITHOUT LOCKING: https://amzn.to/3zuIkEH ⌨️ Calculator model I use to calculate: https://amzn.to/3oqi0oP 👉 📚Book Calculation and Detailing of Usual Reinforced Concrete Structures: https://amzn.to/3jfyFbX 👉How I learned Revit from basic to advanced https://bit.ly/RevitdoBasicoaoAvancad... Hello, how are you? The structural design is the stage where the ideas of the architectural design are related, whose function is to give dimensions. Therefore, the structural project must include structural design, dimensioning and detailing. In the dimensioning stage, the engineer or designer must predict what loads will be placed on the structure. In this way, the structure's own weight is calculated in relation to the type of structure, where: To calculate the slabs, the specific weight of the material must be calculated and multiplied by the thickness. The result will be based on the weight per square meter. For beams, the calculation is based on the specific weight of the material and multiplied by the height and width. The result will be per linear meter, so if necessary, simply multiply by the length of the beam. For pillars, the calculation is based on the specific weight of the material, multiplied by the smallest side, largest side and height of the element. In this case, the result will only be the load or weight of the element. The reason for calculating the own weight is that this load will be distributed throughout the building. If it is calculated incorrectly, all the following steps will have different values, that is, it will not meet the project. Enjoy and watch the video in which we detail the overloading of buildings based on NBR 6120. Happy studying! Eng° Pedro Rodrigues