00000nam 2200000zi 4500 9.889965 CaOODSP 20250821143120 m o d f cr mn||||||||| 200729t20202020onca ob f000 0 eng d 9780660356808 CaOODSP eng rda CaOODSP NR24-50/2020E-PDF Ko, Yoon, author. Water mist systems for protection of mass timber structures - phase 2 residential fire suppression tests / author(s), Yoon J. Ko, Nour Elsagan and Eric Gibbs. [Ottawa] : National Research Council Canada = Conseil national de recherches Canada, 2020. ©2020 1 online resource (v, 43 pages) : illustrations (chiefly colour) text txt rdacontent computer c rdamedia online resource cr rdacarrier At head of title: Construction. "Report no.: A1-016670.1." "Report date: Jul. 30th, 2020." Includes bibliographical references (page 38). "As an alternative option to conventional sprinkler system, water mist systems are considered for the protection of timber buildings because they use much less amounts of water compared to sprinkler systems. The effectiveness of high pressure water mist (HPWM) and low pressure water mist (LPWM) systems was investigated in comparison to sprinkler systems for a residential fire scenario involving mass timber structures. The most distinct characteristic of the HPWM and LPWM systems was fine water droplets generated from the nozzles, which demonstrated effective smoke cooling in the room. Although the water spray rate of the HPWM was four times lower than that of the sprinkler system, the water mist systems effectively control the fire and maintained the room tenable. Most systems (HPWM, LPWM and sprinklers) tested in this study did not prevent fire damage on the CLT walls, but the HPWM system with a wide spray angle demonstrated rapid fire suppression and protection of the CLT walls. In all tests, a large water pool formed on the floor, which appeared proportional to the total water spray discharge in each test, and the moisture contents measured on the surface and bottom edges of the CLT panels indicated that water can penetrate into the interface between the floor and the wall in a typical CLT assembly"--Executive summary, page 1. Issued also in print format Fire sprinklers Testing. Fire extinction Equipment and supplies Testing. Wooden-frame buildings Fires and fire prevention. Extincteurs automatiques Essais. Incendies Extinction Appareils et matériel Essais. Constructions à ossature de bois Incendies et prévention des incendies. National Research Council Canada, issuing body. Water mist systems for protection of mass timber structures : (CaOODSP)9.889967 PDF 2.79 MB https://publications.gc.ca/collections/collection_2020/cnrc-nrc/NR24-50-2020-eng.pdf