
November 24, 2020
Moment Capacity of Slabs with Base Reinforcement
In this video, the calculated moment capacity of a slab with base reinforcement, as well as the cover requirements for base reinforcement are reviewed.
With the adoption of ASCE 7-22, the concept of a multi-period response spectrum has been added to seismic design requirements. While this provides more accurate hazard representation, it also means engineers need to generate and input additional site-specific data. This quick workflow shows how to gather that data from the ASCE Hazard Tool and use it in RISA’s site parameters table for seismic load generation. Why This Matters for Engineers? Multi-period response spectra reflect more realistic ground motion characteristics and will increasingly be required as jurisdictions adopt ASCE 7-22. By pulling site-specific values directly from the ASCE Hazard Tool, engineers can ensure compliance and avoid unnecessary assumptions. The multi-period approach can result in higher or lower design forces depending on the building’s period and site class, but it always provides more accurate seismic representation than the traditional two-point method. Download the latest versions of RISA that supports ASCE 7-22 below. Step 1: Generate Multi-Period Spectrum Data Go to the ASCE Hazard Tool. Enter your project location (address, coordinates, or site description). Select ASCE 7-22 as the building code. Navigate to the seismic hazard results and download/export the Multi-Period Response Spectrum data. Step 2: Copy Data Points into RISA Open RISA…
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In this video, the calculated moment capacity of a slab with base reinforcement, as well as the cover requirements for base reinforcement are reviewed.
Seismic factors, including Omega, Rho and Ev, can now be included in automatically generated Load Combinations. Values for Omega and Rho shall be entered into the Seismic tab of the Model Settings to be considered in the analysis.
The release of RISA-3D Version 19 includes the introduction of Yield-Link® Moment Connections, developed in conjunction with Simpson Strong-Tie®.
New to RISA-3D v19 and RISAFoundation v13 is the ability to apply up to 100 "Other Load" Categories. Previously users only had the ability to add up to 10 "Other Load" Categories. The expansion of "Other Load" Categories gives the user more flexibility to be able to apply and organize the loading...
New to RISAFloor and RISAFoundation is the ability to exclude results by selection. Excluding results from your model is useful when there are certain elements whose results aren’t of interest to you. Removing this clutter from the results will enable you to concentrate on the elements you are most...
The new ACI 318-19 concrete code has been implemented into RISA-3D v19, RISAFloor v15, RISAFoundation v13 and RISA-2D v19.
Cold-formed steel framing is a durable, reliable and cost-effective option for low-rise and mid-rise building projects. With the release of RISA-3D Version 19 and RISAFloor Version 15, cold formed steel (CFS) walls are now available for analysis and design. Walls that have been designated as...
In many cases, cold-formed steel channels are built-up as back-to-back profiles in order to add strength and stability. Previously, these sections (along with face-to-face profiles) could be specified in RISAFloor, but unlike in RISA-3D could not be designed. RISAFloor v15 now includes the ability...
RISAFloor now includes the ability for engineers to model with and design CJ-Series composite steel joists according to SJI 200-2015 and including the design of top/bottom chords, bridging, joist seat depth as well as headed stud size and spacing.
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