5.- CONCLUSIONS AND BIBLIOGRAPHIC REFERENCES

CONCLUSIONS

We conclude that bridges are important for communication and movement between or in cities and many other things, so it is important to know their characteristics, their history and their main materials, essential for the construction of bridges, their characteristics and their possible failures that they may have to prevent accidents in the future like the accident of the line 12 of Mexico that we developed in this blog.

Moreover, according to our research, all the expert´s reports say the same, the colapse of line 12 of Mexico City was provocated by deficiencies in the construction procces, some parts of the work did not match with "The original design plan", low quality of the materials and a poor maintenance.

Finally, unfortunately, other accidents like this have happened, definitely these tipes of accidents should not happen.




BIBLIOGRAPHIC REFERENCES: 


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