Preparation

Before designing a bridge with a certain material, first the material characteristics have to be determined. In this case it came down to a beer crate, first the simple data, such as the dimensions and mass, had to be known.

The conclusion regarding the dimensions of a crate is that it is 240 mm high, 300 mm wide and 400 mm in length.

There have been various weight tests done. This was necessary since there will be used several types of beer crates for the bridge. For example, there will be empty beer crates used for the arch of the bridge. The two towers must withstand the forces due to the arch, that is why the beer crates in the arch will be filled with beer bottles which will be filled with water. The towers will consist of 3584 beer crates, that is why the filling process will consume some time! The outcomes of the tests are that an empty beer crate is about 1,8 kg. A filled crate is more than eight times as heavy as an empty one and weighs 15 kg.

Subsequently strength tests on the beer crates have been executed. To get insight in how large the bridge will be, one first have to find out what kind of strengths a crate can endure. That is why tests have been done, which can also be seen in the media (link). By the use of a press were the crates been loaded until the point of deformation. On the basis of the data which was acquired what types and amounts of strengths a crate can withstand before failure. From the tests turned out that when the crates were stacked in a certain way, one crate could bear over 1800 kg of mass. This is about the same weight as a small SUV! When the beer crates were exposed to shear stress they could beer 400 kg.