June 14, 2022

Case Study: SCC Beatrice Academic Excellence Center

Learn how Olsson utilized the entire RISA Suite (RISA-3D, RISAFloor, RISAFoundation and RISAConnection) to design the newest addition to the Southeast Community College campus located in Beatrice, NE.

To learn more visit the project case study page:

SCC Beatrice Academic Excellence Center

Tags: RISA, New, News, Case Study

August 30, 2019 | Slab, RISAFoundation, New, Reinforcement

Add Single Layer of Reinforcement anywhere in Slab

RISAFoundation has the ability to create a single layer of reinforcement anywhere in a slab. This improvement allows for a more straightforward design of thin, lightly loaded slab-on-grade where two layers of reinforcement (top/bottom) would be unnecessary. In order to add a single layer of reinforcement, users select Single Layer from the Rebar Options drop-down found in the Mat Slab tab of the Design Rules spreadsheet. When a user selects Single Layer, only the inputs for Top Bar size and the Max/Min Top Bar Spacing are used. Additionally, the value of Top Cover found in the General tab is used to define the depth of the bar in the slab. Note: When Mid-Depth Only is selected, the Bottom Bar size, the Max/Min Bot Bar Spacing and the Bot Cover are used. The design of the slab will differ based on whether the reinforcement is placed above or below the mid-depth of the slab. When the single layer is placed above mid-depth, the slab will be designed according to slab-on-grade requirements found in ACI 360-R and ACI 223. These provisions focus mainly on design in response to crack control. When the single layer is placed below mid-depth, the reinforcement is assumed…

October 22, 2024 | Featured, RISA-3D

How to View Step Results for Moving Loads in RISA-3D?

In RISA-3D, moving load results are generated by simulating a load that moves across a structure in defined increments. These loads are often used for designing bridges, cranes, or other structures where dynamic loads shift across the structure over time. Moving loads are complex because they involve numerous load steps, each with its own set of internal forces and deflections. Due to the large number of iterations, RISA-3D envelopes moving load results, meaning only the maximum and minimum values for each member or section are shown. This helps simplify the output and avoids an overwhelming volume of data. However, to view individual load steps for detailed analysis, a different approach must be used. Viewing and Creating Moving Load Steps in Load Combinations To review moving load results such as deflections and force diagrams step by step in RISA-3D, you need to generate load combinations that reflect individual moving load steps. Here’s how you can view and create these steps: Identify the Desired Moving Load Step: First, you must determine which moving load step you want to investigate in detail. This can be done by reviewing the envelope results and noting the governing load combination and step number in the "LC"…

March 20, 2015 | RISA-3D, Loads, RISA-2D, New, News

Moving Load Point Load Generator now Available

A common question we get in tech support is “how can I verify my moving load results?” We now have a feature that will allow you to quickly generate a static loading condition equivalent to the moving loads at any given step along their path so you can investigate the detailed results at this location. First, you will want to run your moving load combination in an Envelope or Batch + Envelope solution to get your governing results. For further instruction with using moving loads, see “How to Use Moving Loads?”. Link: Moving Loads: How To Once solved, choose your results to review and open that spreadsheet. Notice that in the LC column, you will see both the governing load combination number and the governing moving load step number within that load combination. Choose which step number you want to investigate. On the Home tab of the Ribbon toolbar, click on the Create Point Loads from Moving Loads button. Enter which Basic Load Case you want the new point loads added to, the Moving Load pattern or load combination, and the Step Number then click Apply. You now have a static load pattern that is identical to the moving load…