Materials

We decided to study the materials used on the stadium as well as the materials usually used to construct a stadium and see whether it has an effect on it’s strength.

La Plata’s dome is constructed with extremely durable fabric and steel. The PTFE-fibreglass membrane allows sufficient sunlight to nourish the stadium’s natural grass playing field. The fabric is capable of withstanding temperatures from −100°F (−75°C) to 450°F (232°C) and is flame-resistant, waterproof, and impervious to ultraviolet rays. The durability and relatively low cost of the fabric makes it an extremely economical construction material.

We have compared six different materials in four of their aspects. The materials we compared are: Steel (=Acier); Aluminum (=Aluminium); Iron (=Fer); Concrete (=Béton); Wood (=Bois) and Cast iron (=Fonte). The properties we compared are: Their Elastic limit; Young’s modulus; their density and the Price.

Results:

We compared several materials likely to be used in the construction of a stadium to see why steel was chosen as the main material. First of all we can note that wood is inflammable and very much more expensive, on average 350€ (but this varies from wood to wood), as for concrete, it is not very resistant with 5MPa as elastic limit and 20MPa on Young’s modulus. Finally the aluminum is moderately placed in these domaines, but it is consequently below steel (Elastic limit:410MPa , Young’s modulus:62MPa). Therefore we may note, after several comparaisons that cast iron, iron and steel are similar, however steel does stand out. It is first in all compared domaines (Elastic limit:44MPa, Young’s modulus:210MPa.)

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