Provisional timber structure for emergency situations

Every time more and more building aspects are being modularized, leading to save time and money when manufacturing and installing. From structural elements (pillars and slabs), to prefab façade panels and gypsum plasterboards partitions. With modularity as foundation, this paper states a modular system for building timber provisional structures to adapt to different situations, depending on the required area, showing a better stability and versatility over existing provisional building systems, such as aluminium tubular- structure marquees. Starting from controlled dimensions to ease structure's fast assembling, basic calculations are used to design the different elements that would compound the initial module, which can be replicated in order to scale up the building according to the necessities. These calculations are based on Estructuras de Madera. Bases de cálculo [1] and Código Técnico de la Edificación, Documento Básico: Acciones en la Edificación [2]. The structure has been designed to be manufactured with C14 conifer timber, because of being commonly found and less resistant, but also more lightweight than others. The main gantry is compound of a 6-meter main beam, divided in two pieces which rest one on each other by means of a scissor joint fastened by two clips, and which rest on two pillars that stand the whole load and transmit it to a continuous timber- pieces foundation, working as well as lower bracing, and being modular, so as they can be assembled as many as gantries are needed. The joint between the main beam and the pillars will be tongue and groove, being fastened by a swing top system. Gantries are braced between them by a top piece and two lateral ones, joining to the main beams by dovetail grooves. In order to get more stability steel braces in St. Andrew's cross- shape will be installed, being tightened by tensors in both of their ends. This structure will be closed by a 7% slope roof sandwich panel. Lateral envelope will depend on weather conditions. With this system we can achieve a main structure that can be extended and used from warehouse to field hospital.