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Component Manufacturing dverti$er
By Simpson Strong-Tie Staff
Don’t Forget! You Saw it in the
Adverti$er
June 2019 #11239 Page #98
Questions Answered: Strong-Wall® Site-Built Portal Frame System
In this article, we follow up on our April 17 webinar, Meeting Braced-Wall Requirements: A New Portal Frame Solution, by answering some of the interesting questions raised by attendees. During the webinar, we discussed how the Strong-Wall site-built portal frame system (PFS) provides designers, builders and contractors in prescriptive jurisdictions with a new alternative to IRC wallbracing methods. In case you weren’t able to join our discussion, you can watch the on-demand webinar and earn PDHs and CEUs here. As with our previous webinars, we ended with a Q&A session for the attendees. Bryan Wert, our Engineering Manager in the Southeast US, and Tom McClain, our Strong-Wall Shearwalls senior product manager, answered as many questions as they had time ford. Now we’re back to recap our answers to some of the more popular questions. If you’d like to see the full list of questions and answers, though, click here.
DESIGN Can the PFS be used for engineered design in seismic design categories D or E? The PFS is applicable for use in Wind and SDC A, B and C for detached one- and two-family dwellings. At this time, we haven’t yet evaluated the PFS solution for high-seismic conditions. Designs in SDC D0-D2 should consider using one of our prefabricated Steel Strong-Wall® shearwalls (SSW) or StrongWall® wood shearwalls (WSW). Are there actual lateral load capacities available for the PFS? The PFS is designed for the prescriptive market. We will not be publishing allowable shear loads at this time; just equivalent braced wall lengths. Can you use 1 1/2″-thick LVL for the PFS? Yes. You would need to shim out at the holdown (or full height) similar to sawn lumber. The capacity would be based on Douglas fir / southern pine. Is there a code report? No. We will be pursuing a code report for IRC bracing applications. Our current WSW and SSW Strong-Wall® code reports, ICC-ES ESR-2652 and ICC-ES ESR-1679 respectively, are recognized for use in IBC engineered designs. Continued next page
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