Felix Edmundo Perez Jimenez
Catedrático de Caminos
Universidad Politécnica de Cataluña

ABSTRACT
This article presents and review procedures for the design firm for heavy traffic from Highway Instruction 1963 2003 to the current. the effect of both the materials used in its construction, achieved the same quality and conservation have on the behavior of the firm in our road networks is also discussed.

Keywords
Firm, Dimensioning, Quality Control, Management Systems.