Firestopping Book Firestopping Book | Page 163

To choose a system, we need to know the basic details of the application. ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ What is the makeup of the exterior wall? - Concrete panel, Spandrel Glass, Aluminum Panel etc. What supports the exterior wall? – Steel stud, aluminum mullions, etc. What is the hourly rating you are looking for? – F rating (1 – 2 hour) What is the smoke rating you are looking for? – L rating (<.1 SCFM/ LF) How big of a joint is required (inches) – Measured from edge of slab to nearest point of curtain wall How much movement is required? – Must accommodate building movement (% of joint size) Are there any special considerations? – Unique construction condition, environmental exposure For Example: By following the below-mentioned steps, the perimeter firestop system can be easily identified. Step 1: Log in to www.intertek.com Step 2: Type “Product Directories” in the search box. 163