March 20, 2013
Plate Contours Compared to Spreadsheet Values
After solution in RISA-3D, you can use Results View Settings to view the Plate Contours graphically on your model.
Happy Earth Day on April 22! As structural engineers, our role extends beyond construction; it’s a commitment to sustainability that spans the entire lifecycle of a building. Let's explore how we can make every building a story of continuous rebirth. Birth of a Building: Sustainable Foundations Our journey begins with choosing sustainable materials like bamboo or recycled steel, setting a foundation that reduces the initial environmental impact. Local sourcing and eco-friendly manufacturing processes are crucial in minimizing the carbon footprint right from the start. Life: Efficiency in Action During its operational phase, a building's sustainability depends on our designs. Energy-efficient systems, smart water management, and superior insulation ensure that the building remains functional and adaptable, promoting a longer lifespan with minimal environmental impact. Twilight Years: Planning for Flexibility As buildings age, planning for future modifications becomes essential. Designing with modularity allows parts to be upgraded or replaced easily, extending the building's useful life and delaying deconstruction. End of the Line: Deconstruction Over Destruction Eventually, every building reaches the end of its useful life. Here, we focus on dismantling so materials can be reused or recycled. This phase is about keeping materials out of landfills and re-entering them into the production…
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After solution in RISA-3D, you can use Results View Settings to view the Plate Contours graphically on your model.
The applied loads in a response spectrum analysis (RSA) are the applied masses times the accelerations in the response spectra. Each mode of vibration produces its own set of joint reactions. The reactions for each mode obey statics as shown in the portal frame example shown below: Response...
In order to get code calculations, RISA-3D and RISA-2D need to know what type of shape would be most similar to yours. This is because the program needs to use the correct code equations for your shape type.
Investigating P-Delta instabilities in RISA-3D (or RISA-2D) can be difficult. The first step is usually to solve the model without the P-Delta effect included to see if there are any obvious deflection problems that could cause issues with a P-Delta analysis. But, what can be done when this doesn’t...
Students and Professors can utilize a special version of RISA-2D which is aimed at teaching and understanding the basics of structural analysis. While this version has a limited number of features, it will prove to be a useful tool in expanding the students structural engineering knowledge.
RISA-3D, RISA-2D and RISAFloor have the capability to project distributed and area loads onto members. Consider the case of snow load on two buildings: one with a flat roof and one with a sloped roof. Ignoring the concept of shedding, if both buildings have the same footprint then they should both...
While RISA-3D (or RISA-2D) does not have an explicit tool to punch a hole in a plate, you can use the following steps to manually model them:
The bending and axial code checks for single angles differ somewhat from other shape types, because single angles behave quite differently in bending and compression depending on how they are braced along their length.
When your RISA-3D model is not behaving as you anticipated, one of the best tools you have is viewing the deflected shape. Displaying the deflection graphically will help you visualize how the model is behaving and will often times bring to light modeling errors.
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