
February 1, 2011
What is a “Default Deck” in RISAFloor?
To understand decks it is important to know what a deck is. In typical buildings, most of each floor will consist of only one type of deck.
Whether you’re coming back to RISA after a short break or revisiting it after years away, we’re here to make your return seamless and rewarding. From updated features to enhanced training resources, RISA is more equipped than ever to support your structural engineering needs. Here’s a step-by-step guide to help you re-engage with RISA and maximize your experience. 1. Assess Your Needs Before diving back in, take a moment to consider your current project requirements. Are you focusing on steel design, concrete analysis, or something else? Knowing your priorities will help you identify the RISA products and features that align with your goals. Quick Tip: New to RISA? Check out our products with an engineer to see which tools best match your project scope. 2. Explore What’s New RISA software evolves continuously to meet industry demands. If it’s been a while, you might be amazed by the new features and integrations we’ve introduced. For example: Enhanced RISA-3D and RISAFloor integration for seamless lateral and gravity design workflows. New templates and tools for complex systems like semi-rigid diaphragms. Improved interoperability with Revit and other BIM software. Next Step: Visit our New Features page to catch up on the latest updates. 3…
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To understand decks it is important to know what a deck is. In typical buildings, most of each floor will consist of only one type of deck.
Before reading this, be sure to check out the article linked below on X-Bracing. In RISA-3D, you can set a member to be tension-only by selecting it and selecting Tension Only or Euler Buckling from the Additional Properties section of the Member Properties.
There are several tips to modeling X-Bracing within RISA-3D that can help the model solve faster and give you better results.
When a model is loaded, it deflects. The deflections in the members of the model may induce secondary moments due to the fact that the ends of the member may no longer be vertical in the deflected position. These secondary effects for members can be accurately approximated through the use of...
Continuous tiedown systems are used to help resist overturning forces generated by lateral loads, and can be estimated in RISA-3D using the hold-down database and the strap forces.
When it comes to trusses in RISA-3D, boundary condition definitions (pin vs. roller) can make a huge difference. Let’s take an example of a typical roof truss. Note that a pin-pin boundary condition has been applied to the ends.
When you have a plate model for a slab or wall in RISA-3D, the Internal Force Summation Tool (IFST) is a very useful analysis tool to get exactly the forces that you want to design for. To use the tool, you must:
When using rigid diaphragm analysis in RISA-3D it can be useful to evaluate the story shear in each frame. This is a perfect application for the Internal Force Summation Tool. The first step is to solve the desired load combination.
RISA includes various advanced spreadsheet operations that make reviewing input and results easy.
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