NFPA 72 火灾报警规范
日期:2012-02-08 16:52
rules that mandate low-frequency signaling for those with mild to severe hearing loss, and tactile as well as visible signaling for those with profound hearing loss.
Smoke detector placement -- Updated spacing and placement requirements for level beamed ceilings and new spacing requirements for sloped beamed ceilings
Raise protection to new heights! Order the groundbreaking 2010 NFPA 72 National Fire Alarm and Signaling Code today. (Softbound, 361 pp., 2010)
NFPA 720 Standard for the Installa
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11/03 08:52