Witam, właśnie skończyłem pisać tą prezentację i chciałbym żeby ktoś rzucił na to okiem czy jest dobrze napisana.
Hello, toady I'm going to talk about Łazienkowski Bridge in Warsaw. It was built from 1971 to 1974. The designer was Jerzy Mazur with team. The length is 424,5m and the width is 27,50m. Bridge connect Centrum of Warsaw with Praga. Bridge has five spans which are connected and create a continuous beam. Extreme spans is 76,5m long and three middle 90m long. First plans to build Łazienkiowska road with crossing over Vistula appeared in . In 1967 approved the project of building road and bridge. Road construction started in 1968 but as a result of financial problems construction has been halted. After three years, in 1971, construction started. Opening scheduled on
22 of July 1974. But due using low quality materials, after two years bridge began to destroy.
The first fire happen in 1975. Investigation demonstrate that fire began from arson of sentry box. Investigation discontinued and no-one be punished. Examination show that first and second span were damaged also 200 m of pavement have to be repaired. Losings compute on 36 million zloty.
As I mentioned ealier for bulding contractor use low quallity materials, and this photos shows fated condition of bridge.
Second fire heppen in this year. Probably reason of fire is that someone use fire to get metal from cable. Fire move to the technical passageway build from wood. After examination, experts decided that bridge can't be used more and it has to be rebuild. Photos shows the damage of structure. High temperature cause buckling girders, crossbeams and orthotropic plate.
Bilfinger infrastructure which is chosen to renovation bridge decide that they use old construction to bulild new. They cut the old structure and lay it on temporary support, then built new structure and push it for to right place.
Thank you for your attention