ESTIMATION WAYS REVIEW OF BRIDGE LEG SCOUR DEPTH ANDCOMPARING THEIR ACCURACY AND APPLICATION WITHEACHATHER

Scour is one of mast important factors in bridges destruction . at first, identification of thisphenomenon and then proper estimation of water-washing amount is critical for effectingapplication on bridges designing water – washing make in result of river bed erosion by watercurrent andmatrials that corried by water by time passing , surroundin of leg was emptied andcause instatbi- lity of construction.