Under different air temperature and relative humidity conditions, when protracting the moisture adsorption time, the moisture content increase and influences of initial moisture content, temperature and relative humidity on rice cracking caused by moisture adsorption were studied.

In order to study the situation of tunnel smog and temperature after the fire in Tunnel,this paper established a fire model for calculating air temperature,the temperature of cliff side and calculating the concentration of fire smog in the tunnel with the fire principle of the underground project.

The air temperature and absolute roughness are key factors affecting frictional resistance of brick or concrete ducts for pressurization air supply systems and exhaust smoke systems in high-rise buildings.