Ads
related to: smoke detectors in elevator shaftsreviews.chicagotribune.com has been visited by 1M+ users in the past month
Search results
Results from the WOW.Com Content Network
The fire-resistant outer elevator doors were also removed to allow light into the elevator shaft for the welders. [ 2 ] The welding activity routinely triggered alarms from the building's smoke detectors , so much so that staff at the China Arts & Crafts store that occupied the bottom three floors had wrapped plastic around the fire alarms to ...
High-rise buildings sometimes also incorporate fans to produce a positive pressure in stairwells and elevator shafts to reduce smoke infiltration into those spaces. When glass windows in a burning structure burst from internal pressure and heat, or the fire burns through the roof, it may be said to have "auto-ventilated" or "self-ventilated."
Smoke detector 1. part of a fire alarm system that detects and signals presence of smoke 2. self-contained household device for same purpose as (1) but with its own noisemaking device. Smoke ejector Powerful fan for moving large amounts of air and smoke as part of ventilation task while fighting fire
Fire alarm systems are required in most commercial buildings. They may include smoke detectors, heat detectors, and manual fire alarm activation devices (pull stations). All components of a fire alarm system are connected to a fire alarm control panel. Fire alarm control panels are usually found in an electrical or panel room.
Smoke detector mounted on a ceiling. A smoke detector is a device that senses smoke, typically as an indicator of fire.Smoke detectors/alarms are usually housed in plastic enclosures, typically shaped like a disk about 125 millimetres (5 in) in diameter and 25 millimetres (1 in) thick, but shape and size vary.
Smoke dampers can be activated by the fire alarm system, usually initiated by smoke detectors, or interlocked with a fire suppression system. Smoke dampers close by an electric or pneumatic actuator, or a spring actuator, and can be either manually reset or driven open on a reset signal to the electric or pneumatic actuator.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Stairwells, shafts, elevators, and the like, tend to contribute to the stack effect, while interior partitions, floors, and fire separations can mitigate it. Especially in case of fire, the stack effect needs to be controlled to prevent the spread of smoke and fire, and to maintain tenable conditions for occupants and firefighters. [2]
Ads
related to: smoke detectors in elevator shaftsreviews.chicagotribune.com has been visited by 1M+ users in the past month