Destroy of ecological environment caused by coal over-mined and its control measures;

Soil erosion of tongziying hydroelectric station project and control measures;

Cause analysis and control measures of the crack of the prestressed cantilever casting box girder bridge;

Analysis on causes of pumping concrete cracking and preventive measures;

The analysis and preventive measures in the quality problem of concrete;

Common quality diseases of glass screen wall and its preventive measures;

Study on the causes of outside-wall leakage of houses and prevention measures;

Study on the cracks in masonry structure and prevention measures;

The mechanism and prevention measures of grinding cracks;

The causes of cracks of concrete bridge deck pavement layer and its prevention measures;

Study on causes of vehicle jolting at bridgehead and prevention measures;