A 39-foot-thick concrete anchor prevented the test structure itself from flying into orbit.
The test structure would have been buried underneath the elevation and sealed by the arch, which would have stood three times as large as Paris's Arc de Triomphe.
From the viewing platform above the heavy load test structure, Richter points out an area in the district of Tempelhof-Schöneberg that has recently been the focus of strife between the government and renters.
Here's a half-minute video clip provided by Purdue that shows the test structure, shown to be unsafe without the masonry walls, easily withstood an earthquake-style jolt with the modification.
The test structure has been pushed and pulled to see how it holds up to the stresses and strains of spaceflight.
GMAC attributes the drop to a change in test structure: the addition of a section on "integrated reasoning", which first made its appearance in June 2012.
Figure 1 Schematic representation of the test structure.
The test structure is then subjected to a thermal stress.
A micromachined test structure was fabricated and evaluated.
The test structure features lattices of point contacts.
The textile was confined inside a one dimensional test structure.
