The concept of prevention is simple. Engineering Judgments Engineering judgments come into play when a condition exists in the field which differs from the original design or some other item creates a hindrance that cannot be easily corrected through redesign or reconstruction. Unfortunately a firestop system can be rendered ineffective if installed improperly. Intumescence occurs most often with products which can melt or change their shape in a fire, such as plastic pipe. A wall or floor may have such a fire-resistance rating, and when an opening is created for cable, conduit or any other service element, that barrier's fire-resistance rating is compromised. Products with a high flame spread definitely would not be an approved packing material.
Firestop Design Center
The joint systems shall have a tested rating of not less than that of the required rating for the assembly they are a part of. Each firestop system has limitations for the annular space so if an architect or inspector observes a condition where the annular space is excessive, then further investigation is required. After five failed attempts you should create a new password by using the link below: Why is fire protection important? Hilti helps specifiers and building owners by providing the safest firestop products on the market with simple and intuitive installation options designed to help preserve property and protect lives. Here is a key highlight from the UL Guide Information to keep in mind the next time you are in the process of selecting or reviewing a through-penetration firestop system. Whereas penetration seals or penseals only dealt with openings made to accommodate penetrants , firestops now also include Joint building.
Through-penetration Firestop Systems, XHEZ - UL Product Spec
Generate a firestop submittal in 3 easy steps. Find a Hilti center. Customer Service hours of operation: Request an engineering judgement. UL permits the reproduction of the material contained in the Online Certification Directory subject to the following conditions:
Description: Users of fire resistance assemblies are advised to consult the general Guide Information for each product category and each group of assemblies. This page was last edited on 25 June , at The following information is general in nature and must be confirmed with the local building codes and the Authority Having Jurisdiction. CP , Mineral wool Show all. Most fire stop manufacturers have load bearing assemblies, but there are strict guidelines for proper usage and installation.