Triedro

The Triedo is based on the use of a modular element (the trihedron) whose shape lends itself to infinite combinations. Formed by a portion of slab and two walls competing at a vertex, it is made from a single concrete casting so as to form a rigid structural element that does not require shoring during assembly.

The trihedron element is flanked by other elements which, by integrating with each other both in plan and in elevation, allow the widest possible composition possibilities. We work on a modular grid of 2.50 ml, having as constant elements the service block (triedro equipped bathroom-kitchen) and the staircase block; by exploiting the additionality, substitution and combinations between the individual two- and three-dimensional elements, the compositional schemes of the accommodation are quickly realised. The ‘basic’ compositional cell with plan dimensions of 10 x 10 m is realised through the aggregation of only six elements: four ‘trihedrons’ and two intermediate floor plates.

The service block is obtained by fitting a trihedron with the bathroom and kitchen element. On request, it is supplied complete with sanitary equipment and connections for water distribution and drainage. The balcony parapets, which are self-standing, are fitted by exploiting the angular shape. The external window frames are all unified (Art. 5 of Ministerial Decree 5-7-75). There are two types of stairs that fit into the module: one with a square plan with four flights, the other with a rectangular plan with two flights. The ‘L’-shaped foundation walls are positioned under the support lines of the ‘trihedral’ elements only.

This form of foundation guarantees the stability of the element making props or ties of any kind unnecessary during assembly. Completion works are simplified by making them completely independent of assembly operations, so that they can be carried out at a later date by specialised teams. Few elements with a high degree of finish are used, allowing standardised production and economical transport even over long distances. All vertical joints are eliminated.

The ‘Tried-and-true’ with its accessories is made in special formwork by casting a homogenous and compact concrete mix with a special inert material that meets the required thermal-acoustic coefficients and solves the buildings' overall statics.