Stair pressurization systems are designed to create a smoke-proof barrier, preventing the ingress of smoke into staircases within buildings. In tall buildings over 25 m, evacuation strategies can utilize phased or simultaneous evaluation multiple storeys. This paper examines performance stair with differing number doors open starting from two doors, an incremental step up total 10 shaft. Simula...

Assessment of the annual radon concentration is often required in indoor surveys territories and individual dwellings for comparison with reference levels, studying factors affecting accumulation dwellings, assessment exposure epidemiological studies, etc. The were carried out multistorey buildings eight Russian cities using solid state nuclear track detectors an period three months. For these ...