Browsing by Author "Rico-Martinez, Jose Miguel"
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Item Analysis of Planar Double-Layer Timber Spatial Frames by Using Parametric Tools(2024-08) Manterola-Ubillos, Maddi; Gonzalez-Quintial, Francisco; Rico-Martinez, Jose Miguel; Benito Ayucar, Josu; Begiristain-Mitxelena, Jon Andoni; Materiales Construcción AzpeitiaIt is in the preliminary design phase of a project that the designer makes decisions concerning the global geometry of the structure. When working with space frames, the choice of the frame topology is key for the structural behavior. It is difficult to find manuals that provide guidance on which of the most common topologies is the right one for the project, let alone in wood construction. In response to this shortcoming, the use of parametric software is proposed (Grasshopper build1.0.0007 and Karamba 3D 2.2.0.16-220828). The aim is to create a dynamic catalog that responds instantaneously to changes in the parameters to provide information on structural behavior, pre-dimensioning and metrics. With the display of all this information, the architect will have enough technical argumentation to choose or reject options. The proposal is developed through a case study: the early design and analysis stages of flat double-layer timber spatial frames as for rectangular medium-span roofs.Item Mechanical Properties of Three Bamboo Species: Effect of External Climatic Conditions and Fungal Infestation in Laboratory Conditions(2022-12) Elejoste, Asier; Osa, Juan Luis; Arevalillo-Roman, Alfonso; Eceiza, Arantxa; Abascal, Jose Miguel; Rico-Martinez, Jose Miguel; Butron, Amaia; Peña-Rodriguez, Cristina; SGU; ECOEFICIENCIA DE PRODUCTOS DE CONSTRUCCIÓN; BIOECONOMÍA Y CO2Bamboo is a material with good tensile and flexural resistance. As a construction material with structural capacity, using bamboo implies considerable environmental advantages in relation to other typical materials such as steel or concrete. For its correct implementation, it is necessary to define its mechanical properties and durability. Bamboo is susceptible to degradation due to the lack of natural toxins and thin walls, which means that shallow decomposition processes can imply appreciable reductions in its mechanical capacity. The main degrading agents considered in this study were beetles, termites, and xylophagous fungi. The aim of this study was to analyze the durability of three different species: DS, PA, and AA. Durability and mechanical tests results after 6 months of exposure to biotic and abiotic agents were compared with their original properties and chemical composition. In this study, durability was analyzed in two ways. Firstly, the loss of mass due to fungal infection was investigated. The results obtained were based on the standard EN 113 using the fungus CP. Secondly, bending and compressive strength was evaluated after a durability test according to the standard EN 335:2013 for the CU3.1 use class after a 6 month period in the city of Donostia/San Sebastian, Spain. The DS and AA varieties were rated as very durable CD1, while the PA variety is durable CD2, thus proving to be an attractive material for construction.