# In Search of Lightweight Deployable Tensegrity Columns
## 5 Results and Discussion  
The results are synthesized in Table 6. They are divided into four main groups corresponding to the modules used. These groups are divided with the \"/\" sign in terms of the analyzed deployment scheme. The most desired values of each parameter are indicated in a box. The first four parameters describe the basic properties of the columns. The next three parameters are given with certain approximation because it is not possible to give exact values as the actual joints were not designed. The volume of the package describes the amount of space that the undeployed structure occupies when it is stored without considering cables' volume. The compression ratio is the undeployed to deployed volume ratio. The space for deployment gives information on how much area is needed for the deployment process. The column layout shall be understood as follows: modular--the structure is composed of regular tensegrity modules joined in nodes without any additional elements; non-modular--the structure is based on regular modules, but they are connected in such a way that they create a new tensegrity system; extra cables--like modular, but additional cables without prestress are needed. The package type defines in which form the structure can be stored. The next two parameters are straightforward. Sensitivity to external loads shall be interpreted as sensitivity to the additional forces (not the main load) acting in a vertical (e.g., gravity) or horizontal (e.g., wind) direction during the deployment. The amount of active cables tells how many cables must change their length in order to control the deployment. The amount of actuators indicates how many mechanical devices are needed to control active cables or groups of cables. The tensegrity class is defined according to [18] and should be understood as follows: a tensegrity of class \(n\) is a structure in which at most \(n\) struts are connected to any node. The number of infinitesimal mechanisms and the number of self-stress states characterize the mechanical behavior of tensegrity systems. The mass of the structure is the sum of the cable and strut masses excluding the mass of the joints. The density of the structure is calculated as the volume of a cuboid that is circumscribed on the deployed structure divided by the mass of the structure. The LCC parameter is a dimensionless load carrying capacity and should be understood as the ratio of the load carrying capacity of the column to its weight. The load carrying capacity is the maximum external load that can be applied before a failure occurs. The failure shall be understood as reaching the maximum load specified for structural members in Section 3 or the loss of equilibrium of the whole system. The pre-extension of the structure is a parameter that says how much higher the structure should be in the initial state in order to obtain the desired height \(H=4\) m under the applied load. The results given in Table 6 are discussed for each column separately. The final remarks and summary for all the columns are given in the Conclusions. As was stated in the methods' description, the figures representing the beginning of the deployment are not always in a real initial state due to the modeling method used. In reality, they can be flattened more.