Ingeniería Civil y Mecánica

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Subject: search.filters.subject.MADERA ESTRUCTURAL

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    Análisis de las propiedades físicas y mecánicas de la madera de Seique (Cedrelinga Catenaeformis) proveniente del cantón Tena provincia de Napo y su factibilidad como elemento estructural de acuerdo con la Norma Ecuatoriana de la Construcción (NEC 2015)
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2023-09) Acosta Naranjo, José Andrés; Ureña Aguirre, Maritza Elizabeth
    The construction industry has a key role in global sustainability due to its high demand for resources and CO2 emissions. However, the use of materials such as bamboo and wood from sustainable forests can positively contribute to the storage of CO2 during its growth, offsetting its emssions during production. The research analyzed the physical and mechanical properties of the timber species Cedrelinga Catenaeformis from the Amazon region of Ecuador, and its suitability as a structural material according to the NEC 2015. Samples from the Tena canton were collected at 4 commercialization points, laboratory tests were carried out in accordance with the ASTM D 143-14 standard, which allowed determining the maximum stresses and the modulus of elasticity to static bending, traction and compression parallel to the fiber of each sample. When carrying out this investigation, it was possible to obtain maximum values of modulus of elasticity of tension parallel to grain of 17,603.29 MPa, compresion paralele to grain of 4,459.86 MPa, static bending of 10,723 MPa, as well as maximum admissible stresses for tension parallel to grain of 46.23 MPA, compression parallel to grain of 15.93 MPa and static bending of 30.23 MPa of Seique wood, could be compared with the requirements of the Ecuadorian Construction Standard (NEC 2015 chapter 8) determining that it is considered a timber species suitable for use as a structural element with certain limitations. . With this, it was possible to create a summary table of the physical and mechanical characteristics that would serve as a guide for the design of wooden structures in Ecuador
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    Análisis de las propiedades mecánicas de la madera de eucalipto (Eucalyptus), provenientes de la provincia de Tungurahua y su factibilidad como material estructural de acuerdo a la Norma Ecuatoriana de la Construcción 2015 (NEC 2015)
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2021-09) Sánchez Dahua, José Luis; Navarro Peñaherrera, Carlos Patricio
    The main objective of this work is to provide information on the mechanical properties of eucalyptus (bending and tension parallel to the fiber) from the province of Tungurahua and to present the values obtained for stresses and modulus of elasticity, which will be the basis for future designs of structural and non-structural wood elements. First, a bibliographic research on the properties of wood and relevant information on eucalyptus and its uses was carried out. In addition, an observation study was conducted in the sectors where strategic points of extraction and processing of eucalyptus wood were found. The cantons where samples were obtained were Baños, Ambato, Quero, Pelileo, Pillaro, Cevallos and Patate. Laboratory tests were carried out following their respective standards (ASTM D 143-94), which helped us to determine the maximum stresses and the modulus of elasticity both in axial bending and in tension parallel to the fiber of each sample from the cantons mentioned. In carrying out this project, specific data was broken down, which we have of structural wood from the categories set out in the tables of the Ecuadorian Construction Standard (NEC 2015 chapter 8), where we only have reference values but not specific, these helped to have a new database focused on eucalyptus wood, differentiating it from other known structural wood.