Tyvek pipe penetration detail
PERM-A-BARRIER® Wall Membrane (US Version) | Resource | GCP Applied Technologies
Design and Construction of Firewalls
Description: Provide cover on top and all sides, allowing for adequate ventilation. In the NBCC, firewalls are typically 2 hour rated for occupancies equated with a lower risk and 4 hour rated for Group E retail , F1 high hazard industrial and F2 medium hazard industrial occupancies. The debris pattern following collapse of a structure suggests that this is a realistic concern. Parapet and end- wall details are important to prevent fire spread in certain types of construction.