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Analysis Methods

Tensile structures are structures that have two major characteristics: They may have large displacements under expected loads. They are composed of large amounts of linear objects (bars) or surface (elements) that can only withstand tension. If these objects are subjected  to another type of loads (compression, bending,…),  these objects give up interacting with the structure (bent cables, wrinkled canvas, etc.). Both characteristics will generate a nonlinear behavior of the structure. That is, …Read More

Program Modules

The tensile architecture, as any other architecture, passes through a few different design phases. However, these phases tends to clearly differentiate three very different tasks or states: Form finding Calculation of the structure Patterning and detailing It is for this reason that many computer programs that are used in the field of architecture tensioned only serve for any of these tasks. Some of them, such as WinTess3, serve for all three. …Read More

How is wind action treated in WinTess?

Preamble WinTess is designed to be used anywhere in the world. Each country has its own standard of construction, therefore, unless all these rules are introduced into the program, it is impossible to meet each user’s own standards. In this sense WinTess facilitates the possibility to manually modify the calculation of wind actions in order to meet each local standard. Introduction Wind actions in WinTess  are treated as uniform loads …Read More

Torsional stability

It is well known that a structure without any fixed point can not be analyzed. It would be as if floating in a state of weightlessness. Any load that we apply to the structure will move the structure. If the load is constant, it will speed up as per the known equation F = m · a, hence with an acceleration of F / m. That’s why the whole structure …Read More

Pneumatic structures and internal pressure

One of the forms of pretensioning a membrane is to overpressure of the interior air. When a membrane is subjected to an air pressure has a certain curvature, this pressure causes the membrane a stress that is proportional to the curvature. So, if it’s a membrane of cylindrical shape, with a certain radius of curvature R, T tension caused by the internal pressure P will be T = P x …Read More

Integrated calculation

Introduction It is common to find complex structures in both engineering and architecture. We understand complex structures that are formed by various type of structural elements: walls, bars (pillars and beams), slabs, membranes, cables, etc. To tackle with these structures, regardless of which is done by hand or with the help of computer programs, the structure usually is broken down to simple substructures, i.e. with a single structural type, and …Read More

Non-linear analysis

In the field of analysis of building structures, we tend to use the linear calculation. What does that mean? It means the results (reactions, stresses, displacement and deformation) are proportional to data (actions). So, if we get a 3 mm sag on a steel beam when we apply a load of 50 kN, no need to re-calculate to know what will be the sag of the beam in the case …Read More