A factor which occasionally affects stilling basin operation is the slope of the chute upstream from the basin. The foregoing experimentation was sufficiently extensive to shed some light on this factor.

A cofferdam can be defined as "A watertight construction designed to facilitate construction projects in areas which are normally submerged", such as bridges and piers.

The basic problem in Reinforced concrete structures is the corrosion of steel reinforcement. The main cause of this corrosion is intrusion of water inside the RC structures. The corrosion of steel reinforcement can be judged by peculiar cracking of concrete structures. At last stage of corrosion, the steel reinforcement becomes exposed and the extent of corrosion

It is made up of impervious material and its object is to make the dam water tight. The particle size of material used in the core is small so that it can retain water and do not allow its further seepage.

Each of the 24 satellites emits signals to receivers that determine their location or range by computing the difference between the time that a signal is sent and the time it is received.