I am in the permitting phase for a residential IIIA 5 story project in Virginia that will have an amenity component utilizing a steel grid to work with its two story open space. The space will utilize a 1-hour rated wood truss floor ceiling assembly with 2-hour rated wood framed exterior load bearing walls.
We are looking to utilize intumescent paint to handle the beam conditions but cannot find a UL rated system that works with wood framing, the only systems i have been able to find are with concrete floors above the beam.
The reviewer for Prince William County is asking for documentation that clarifies how the intumescent paint can meet the rating requirements in lieu of a rated assembly test, is there any documentation or statements that can be provided by Hilti to cover all sides of a beam being protected with an up to 2-hour rating, or some form of breakdown that explains how the rating is achieved by a certain thickness of application?
What information would be needed for this / if the information is already available can i be pointed to it?
Good afternoon Robert,
There currently isn't a system for this condition but it be a can addressed through an Engineering Judgment which will be a custom detail showing your exact application with the firestop components required to maintain the stated ratings.
Hilti is proud to announce the launch of our engineering website, the HILTI CONSTRUCTION PLATFORM (HCP). This platform will be the home for all of your Fire Protection Engineering needs, including Engineering Judgment requests. You can find more information on how to access this new platform here: https://www.hilti.com/ej (US) or https://www.hilti.ca/ej (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 ask 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
If you have any questions, please reach out to our customer service team at 1-800-879-8000 (US) or 1-800-363-4458 (Canada) for assistance. Below are also some helpful resources for navigating HCP:
1) Register for the Hilti Construction Platform (HCP) https://youtu.be/DD2YRViH9wI
2) Creating a new Engineering Judgment on the HCP https://youtu.be/bpHuWuMiL1w
3) Creating a new Engineering Judgment on the Firestop Selector Mobile App https://youtu.be/WYOdMH8p8mU
4) Firestop system search and selection on the HCP https://youtu.be/zAo7dnhWzH0
5) Firestop system search and selection Firestop Selector Mobile App https://youtu.be/3F18WKy2MOo
6) Creating firestop system submittals on the HCP https://youtu.be/hFZkrwzUbJo
7) How to share a project on the HCP https://youtu.be/rFAMBCVoEOM
8) Revise EJ, Copy EJ, and Search Feature for Greater Productivity https://youtu.be/3kDI6NhV2ak
Fire Protection Design Team
Hilti North America
3701 W. Royal Lane, Suite 100, Irving, TX 75063
P 1-800-879-8000 I F 918-254-1679
E usfirestopeng@hilti.com
www.us.hilti.com/firestop