Combining with the key waterproofing construction technologies used in Xinjiekou station of Nanjingmetro line 1, the measurements to increase the quality of waterproofing when using cover and excava-tion top-down method to build large-scale metro stations are introduced.

Taking the waterproofing work of under ground cut tunnel in Shenzhen metro as example according to the problems encountered in waterproofing construction, such as anti segregation ability, slump of premixed concrete several suggestions are proposed.

This article introduces roof waterproofing construction of a building using system management concept which includes beforehand and in process strict management and control.

The causes of roofing leakage in building engineering and its waterproof construction;

Several problems need to be noticed in waterproof construction in kitchen and bathroom;

Discussion on effective methods in roof waterproof construction;

Dynamic monditoring of underwater construction based on multibeam echosounder system and ADCP;

Described hereby are the technical measures taken in underwater construction in complicated strata with the earth pressure balanced pipejacking machine, with analysis of the accident of No.

The underwater construction of high pressure spray piles were a success.