
April 5, 2018
Seismic Load Consideration for Retaining Walls
RISAFoundation has the capability to consider seismic loading for retaining walls.
If you've ever wondered what it’s like to be an industrial structural engineer, let me paint you a picture: Imagine juggling a dozen problems at once—steel frames, conveyor supports, pipe racks, tank foundations—all while trying to decipher a set of drawings that look like they were faxed from 1997. And, of course, every single solution is needed yesterday. But don’t worry! With the right tools (cough RISA and ADAPT cough), navigating this daily chaos becomes a lot more manageable. So, grab your coffee (black, obviously), and let’s walk through a typical day. 6:30 AM: Morning Coffee & Evaluating Additional Loads The first email of the day: “Can we add another 10,000 lbs of equipment to the mezzanine? What about seismic drift and vibration?” Instead of a lengthy hand calculation, you fire up RISAFloor and check gravity load distribution. Exporting to RISA-3D, you analyze modal frequencies and check if the additional weight will push the structure into an uncomfortable range for human occupancy. Seismic drift is next. A quick response spectrum analysis in RISA-3D confirms that the drift is still within acceptable limits. You send your report with confidence—no major framing changes required. 9:00 AM: Field Issue - Pipe Rack Base…
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RISAFoundation has the capability to consider seismic loading for retaining walls.
We are proud to introduce drastically improved solution times in RISAFoundation version 10.0. This version was updated to include multi-threading/parallel processing capability which will allow it to take advantage of multiple core processors which are becoming extremely common on the market today.
The new TMS 402-16 Masonry Code (formerly designated as ACI 530 and ASCE 5) have been added to RISA-3D v16.0, RISAFloor v12.0 and RISAFoundation v10.0.
Hot rolled steel, wood, and concrete piles are now available in RISAFoundation v10.0. The Pile Definition Editor lets the user input the pile’s properties including the pile’s shape, material, and length. For concrete piles the user has the ability to apply a custom shear and flexural rebar layout...
With Pile Design in RISAFoundation, you have the ability to define the default soil properties for the entire model. But also the Soil Definitions spreadsheet gives you control over all the soil property layers in one location.
The International Code Council just released the 2018 International Building Code (IBC) in August 2017.
The consideration of Live Load reduction is a feature that has been in RISAFloor from the very beginning. However, recent changes to the interface make it significantly easier for you to understand how live load reduction is affecting the design forces in your structure.
In RISAFoundation, you can add a vertical offset for slabs or beams. Traditionally, RISA uses centerline analysis which aligns all elements at their centerline. This is a common structural analysis assumption as the loads will get transferred to the centerline even if there is difference in the...
The CSA A23.3-14 code has been implemented in RISA-3D v15.0, RISAFloor v11.0, and RISAFoundation v9.0.
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