We have a project where the contractor did not run the 5/8" type X continuously on the inside of a required 1 hour 2x6 wood framed exterior wall (needs to be rated from both sides) and installed the stringer directly to the studs, then butt the Type X to the stringer. Is there a solution to retro-actively fire-rate this membrane penetration? There is 2x6 horizontal blocking at the top of the stair stinger the full length. The wall is also insulated.
Jennifer,
Thank you for reaching out to the Hilti Fire Protection Design Team to assist you with your firestop engineering
needs.
We can address your application through an Engineering Judgment, which will be a custom detail showing your
exact application with the firestop components required to maintain the stated ratings.
We are proud to announce the launch of the HILTI CONSTRUCTION PLATFORM (HCP), our company’s new engineering service website. This platform will be the home for all of your Fire Protection Design needs. Instead of emailing a PDF form for a request, the platform enables you to create new Engineering Judgment (EJ) requests, submit revisions to previously completed EJs or connect with an FPE on a question. HCP also enables you to track the status of your request.
You can find more information on how to access this new platform here: http://www.hilti.com/ej (US) or http://www.hilti.ca/ej (Canada.) If you have any questions or require assistance navigating the platform, please call Customer Service for help at 1-800-879-8000 (US) or 1-800-363-4458 (Canada.)
Along with HCP, Hilti is excited to announce our new mobile app for all your firestop needs: Hilti Firestop Selector. Using the Firestop Selector app gives you easy access to the Hilti Fire Protection Design Team from the jobsite, on the road, or in the office to request a new EJ, an EJ Revision, or a Question anytime, anywhere. You can download the app using the appropriate link below.
Hilti Firestop Selector App – Google Play Store
Hilti Firestop Selector App – Apple App Store