Relevant bibliographies by topics / Beam trusses of wood

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  2. Dissertations / Theses
  3. Books
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Academic literature on the topic 'Beam trusses of wood'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Beam trusses of wood"

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Skowroński, Wojciech, and Bohdan Stawiski. "Ultrasonic evaluation regarding the effects of biological corrosion of historical roof trusses." MATEC Web of Conferences 284 (2019): 07006. http://dx.doi.org/10.1051/matecconf/201928407006.

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For many years work has been performed to obtain sufficiently accurate correlation between the results of ultrasonic tests and the results of strength tests for evaluation of the strength parameters of wood in a structure. It is also important to ensure the development of methods which will facilitate the work of construction mycologists; that is, non-invasive methods of determining the volume of missing materials caused by biological corrosion. The study presents the idea of the objective examination of the thickness of a corroded layer by measuring the velocity of ultrasonic pulse along the fibre length using for this spot heads with thin waveguides. Another testing method presented in the study is controlling the velocity of ultrasonic wave in the direction tangential to annual growth rings by conducting tests on the corner of the corroded beam.
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Zhou, Jiale, Chuanxi Li, Lu Ke, Jun He, and Zhifeng Wang. "Experimental Study on Loading Capacity of Glued-Laminated Timber Arches Subjected to Vertical Concentrated Loads." Advances in Civil Engineering 2020 (May 22, 2020): 1–9. http://dx.doi.org/10.1155/2020/7987414.

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Glued-laminated timber arches are widely used in gymnasiums, bridges, and roof trusses. However, studies on their mechanical behaviours and design methods are still insufficient. This paper investigates the in-plane loading capacity of circular glued-laminated timber arches made of Douglas fir. Experiments were conducted on four timber-arch models with different rise-to-span ratios under concentrated loads at mid-span and quarter-point locations. The structural responses, failure modes, and loading capacity of the timber arch specimens were obtained. The results show that the timber arches presented symmetric and antisymmetric deformation under mid-point and quarter-point loading conditions, respectively. The downward shifting of the neutral axis of the cross section was observed under mid-point loading condition, which contributes to higher loading capacity compared to that under quarter-point loading condition. The loading condition significantly affects the ultimate loads and the strain distribution in the cross section. Based on the design formula in current standards for timber structures, an equivalent beam-column method was introduced to estimate the loading capacity of the laminated timber arches under vertical concentrated loads. The moment amplification factor in the formula was compared and discussed, and the value provided in the National Design Specification for Wood Construction was recommended with acceptable accuracy.
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Djara, Eugenius, Natalia Peni, and Maria Trisna Sero Wondo. "EKSPLORASI ETNOMATEMATIKA NGADHU DAN BHAGA DALAM KAITANNYA DENGAN PEMBELAJARAN MATEMATIKA PADA MASYARAKAT DESA UBEDOLUMOLO KABUPATEN NGADA." JUPIKA: JURNAL PENDIDIKAN MATEMATIKA 4, no. 1 (March 27, 2021): 92–107. http://dx.doi.org/10.37478/jupika.v4i1.846.

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This study aims to determine: (1) to identify the structure of ngadhu and bhaga in Ubedoulumolo Village of Ngada District. (2) Explain the relation of ngadhu and bhaga to mathematics learning in school. The research method used is qualitative with an ethnographic approach. The subjects of this study consisted of three informants (pengu chief, and traditional elders of pengu and gelo tribe). Using observation and interview techniques, supported by documentation, and using qualitative descriptive analysis. The results of the study showed ngadhu and bhaga has related to mathematics, that is the geometry concept. The geometry concept found in ngadhu is: (1) pole ngadhu (made of sebu tree) in the form of a tube; (2) base of ngadhu is composed of a stone in a circle; (3) the roof of ngadhu (material of reeds and palm fibre) in the shape of a cone; (4) bhenga (2 roof support posts) in the form of a beam; (5) mangu (NOK pole) shaped beam; (6) sobhe (head ngadhu made of bamboo) shaped tube; (7) paja (roof truss of bamboo) formed triangle, rectangles, trapezoid. The geometry concept in the bhaga building are: (1) bhaga in the form of the beam; (2) roof (made of reeds) in the shape of a trapezoid and triangular prism; (3) pole shape of beams and tubes; (4) Ube (wall made of plank wood fai) shape of the rectangle; (5) Dawu (arranged boards) with carvings in the form of circles and triangle; (6) Soku bhotha and soku wi’i ( as a roof truss made of bamboo) shape tube rectangle, square and triangle. Geometry forms that exist in the ngadhu and bhaga in the Ubedolumolo Village are lines, angles, triangle, square, rectangle, trapezoid, circle, beam. Tube, cone and triangular prism.
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Aliyeva, Sevda, and Mahmud Ismayilov. "RESEARCH OF THE WAVE FACTOR INFLUENCING HYDRAULIC STRUCTURES." ETM - Equipment, Technologies, Materials 05, no. 01 (January 20, 2021): 81. http://dx.doi.org/10.36962/etm0501202081.

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It is known that a large block of deep-sea foundations consists of a truss sheathed with wood, a metal beam system, floating structures and four pyramidal metal blocks with a truss structure. The design characteristics of the foundations of oil platforms depend on the conditions under which the vertical interaction, along with the calculation of permanent and temporary loads, is accompanied by the specific gravity of drilling equipment and rigs or horizontal wind pressure, as well as the influence of horizontal wave loads on the foundation blocks. Horizontal waves and wind loads can be constant and variable in different conditions, therefore the effect of each of these loads on the device must be considered separately. To determine the wave pressure acting on the support blocks of stationary offshore installations, SN-92-60 was used under the editorship of the team of authors under the leadership of Doctor of Technical Sciences, Professor N.N.Tsunkov. Keywords: hydraulic structures, wave factor, wave pressure, wave profile, pressure diagrams, 3D model.
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Bulleit, William M., and James L. Yates. "Probabilistic Analysis of Wood Trusses." Journal of Structural Engineering 117, no. 10 (October 1991): 3008–25. http://dx.doi.org/10.1061/(asce)0733-9445(1991)117:10(3008).

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Kristie, Richard J., and Arne P. Johnson. "Investigating and Repairing Wood Bowstring Trusses." Practice Periodical on Structural Design and Construction 1, no. 1 (February 1996): 25–30. http://dx.doi.org/10.1061/(asce)1084-0680(1996)1:1(25).

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Karacabeyli, Erol, Conroy Lum, and Link Olson. "Strength and stiffness of glulam trusses with punched metal plated joints." Canadian Journal of Civil Engineering 20, no. 4 (August 1, 1993): 622–30. http://dx.doi.org/10.1139/l93-079.

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Several Canadian wood truss manufacturers expressed a need to develop technical information to initiate the fabrication and acceptance of wood trusses made with glued-laminated timber (glulam) members and connected by punched metal plates. In collaboration with industrial participants, Forintek Canada Corp. developed a program for testing and analysis of metal plated glulam trusses. Twelve 3/12 pitched chord trusses and three parallel chord trusses, all 13.7 m long, were designed by three different plate manufacturers. All truss fabrication took place at a single truss manufacturing plant. Trusses composed of 79 mm wide and 152-229 mm deep glulam members connected by 16-gauge punched metal plates were tested to failure. The ratio of ultimate to design load averaged 3.5, and varied between 2.7 and 4.4. Both wood and plate failure modes were observed. The results suggest that the sizes of glulam members used in this study are structurally suitable for use with 16-gauge metal connector plates. Key words: wood, trusses, glued-laminated timber, truss plates, strength, stiffness.
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Zhang, Liuliu, Cheng Chang, and Shuming Yang. "EFFECT OF DIFFERENT WOOD DOWELS ON MECHANICAL PROPERTIES OF TRIANGULAR GIRDER TRUSSES." WOOD RESEARCH 66(3) 2021 66, no. 3 (July 20, 2021): 477–88. http://dx.doi.org/10.37763/wr.1336-4561/66.3.477488.

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Static load tests were carried out on three kinds of triangular girder trusses with different diameter wood dowels, and the effects of that on the structure of girder trusses were discussed. It was found that there was a good synergy between the wood dowels and the girder trusses. Among the triangular girder trusses with different diameters, the 16 mm diameters had the best energy dissipation performance increased by 184% and deformation resistance of 0.73 mm; the 20 mm diameters had the best stability performance, the better bearing capacity of 60.42 kN and deformation resistance of 0.82 mm. The bearing capacity of the double girder trusses was 2.06-2.25 times that of two single trusses, which had the ability to ‘one plus one is greater than two’.
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Giltner, Brian, and Aslam Kassimali. "Equivalent Beam Method for Trusses." Practice Periodical on Structural Design and Construction 5, no. 2 (May 2000): 70–77. http://dx.doi.org/10.1061/(asce)1084-0680(2000)5:2(70).

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Yu, Tian Lai, Xin Yu Li, Qiang Ma, and Zhen Jiang. "Study on the Method for Calculating Shear Strength of RC Beams Strengthened with Externally Prestressed Wire Rope." Applied Mechanics and Materials 94-96 (September 2011): 1442–46. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.1442.

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Through shear test data analysis of 13 RC beams Strengthened with externally prestressed wire rope, shear failure mechanism was elaborated, and shear bearing capacity of reinforced beams were not only calculated respectively by truss -arch model and other simplified calculation methods, but also were compared with test data. Based on the result of comparation, shear capacity calculation method of RC beam Strengthed with externally prestressed wire rope was discussed. The analysis results show that the mechanism of the wire rope shear externally prestressed reinforced concrete beams against the shear is similar with stirrups inside beam. When the shear span ratio is less than 2.7, the static average ratio of the truss-arch model shear capacity caculation value and tested value is 1.02, and standard deviation statistics is 0.07. In another word, calculation value agree with experimental value. When the shear span ratio is larger than 2.7, the calculation value is bigger than test.
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Dissertations / Theses on the topic "Beam trusses of wood"

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Runte, David E. "Fundamental frequencies of I-joist, solid-sawn wood joist, and truss floors based of tee-beam modeling /." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09192009-040550/.

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Lau, Wilson Wai Shing. "Strength model and finite element analysis of wood beam-columns in truss applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0018/NQ57645.pdf.

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Fernández, Bianca Oliveira. "Sistemas de treliças modulares para pontes de madeira: uma boa alternativa para o Estado do Pará." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-30082010-090913/.

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O Estado do Pará tem uma área de 1.253.164,49 \'KM POT.2\', possui uma malha hidrográfica abundante e aproximadamente 19.253,35 km de estradas vicinais, que são cortadas por muitos rios. Neste contexto, a construção de pontes com pequenos e médios vãos é imprescindível para a melhoria do transporte intermunicipal e interestadual. O sistema de treliças modulares para pontes, já estudado no Reino Unido, Brasil e implantado na África, como também na América Central, se adéqua bem ao estado, e é constituído por vigas treliçadas planas, que utilizam peças serradas de madeira com seções transversais comerciais na composição da superestrutura da ponte. Procurando-se implantar o sistema no Pará, esse trabalho tem por objetivo a adequação do projeto de uma ponte treliçada de Eucalipto citriodora em projetos com madeiras tropicais, como Maçaranduba, Jatobá e Ipê. Para esta finalidade o sistema modular treliçado foi estudado por meio de análise numérica e experimental, e avaliado para pontes de até 36 m, com superestrutura formada por vigas treliçadas de madeira com 1 m de altura e ligações parafusadas. Como resultado deste estudo foi elaborada uma tabela contendo o número de vigas treliçadas a serem utilizadas em uma largura de ponte de 3,80 m dependendo do tamanho do vão. O sistema proposto proporciona vantagens como redução de custos e maior rapidez de execução, além de posterior reaproveitamento dos módulos.
The Para state has an area of 1.253.164,49 \'KM POT.2\'; it has an abundant hydrography and nearly 19.253,35 Km of vicinal roads, that are cut by many rivers. In this context, the construction of bridges with small and medium spans is essential to the improvement of intercity and interstate transportation. The system of modular timber truss bridges, was already studied in the United Kingdom, Brazil and used in Africa, as well as in Central America, fits well to the state, and it is composed of beams plane trusses, using sawed pieces of wood with commercial cross sections in the composition of the superstructure of the bridge. With the purpose of installing the system in Para, the aim of this work is the adequacy of the design of a Eucalyptus citriodora\'s truss bridge on projects with tropical woods, as Maçaranduba, Jatoba and Ipe. For this purpose, the modular truss system was studied by numerical and experimental analysis, and evaluated for bridges with spans up to 36 m, with the superstructure using timber trusses beans with 1 m height and bolted connections. As result, was presented a table containing the number of beam trusses to be used in a bridge\'s wide depending on the size of the span. The proposed system provides advantages such as lower costs and faster execution, besides subsequent reuse of modules.
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Mills, Raymond Arthur. "Natural vibrations of beam-like trusses." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/111559.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1985.
Microfiche copy available in Archives and Barker.
Includes bibliographical references.
by Raymond Arthur Mills.
M.S.
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Le, Guennec Yves. "Transient dynamics of beam trusses under impulse loads." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2013. http://www.theses.fr/2013ECAP0016/document.

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Ce travail de recherche est dédié à la simulation de la réponse transitoire des assemblages de poutres soumis à des chocs. De tels chargements entraînent la propagation d’ondes haute fréquence dans l’ensemble de la structure. L’énergie qu’elles transportent peut être dommageable pour son fonctionnement ou celui des équipements embarqués. Dans des études précédentes, il a été observé sur des structures expérimentales qu’un régime vibratoire diffusif tend à s’installer pour des temps longs. Le but de cette étude est donc de développer un modèle robuste de la réponse transitoire des assemblages de poutres soumis à des chocs permettant de simuler, entre autres, cet état diffusif. Les champs de déplacement étant très oscillants et la densité modale élevée, la simulation numérique de la réponse transitoire à des chocs peut difficilement être menée par une méthode d’éléments finis classique. Une approche utilisant un estimateur de la densité d’énergie de chaque mode de propagation a donc été mise en œuvre. Elle permet d’accéder à des informations locales sur les états vibratoires, et de contourner certaines limitations intrinsèques aux longueurs d’onde courtes. Après avoir comparé plusieurs modèles de réduction cinématique de poutre à un modèle de Lamb de propagation dans un guide d’ondes circulaire, la cinématique de Timoshenko a été retenue afin de modéliser le comportement mécanique haute fréquence des poutres. En utilisant ce modèle dans le cadre de l’approche énergétique évoquée plus haut, deux groupes de modes de propagation de la densité d’énergie vibratoire dans une poutre ont été isolés : des modes longitudinaux regroupant un mode de compression et des modes de flexion, et des modes transversaux regroupant des modes de cisaillement et un mode de torsion. Il peut être également montré que l’´evolution en temps des densités d’énergie associées obéit à des lois de transport. Pour des assemblages de poutres, les phénomènes de réflexion/transmission aux jonctions ont du être pris en compte. Les opérateurs permettant de les décrire en termes de flux d’´energie ont été obtenus grâce aux équations de continuité des déplacements et des efforts aux jonctions. Quelques caractéristiques typiques d’un régime haute fréquence ont été mises en évidence, tel que le découplage entre les modes de rotation et les modes de translation. En revanche, les champs de densité d’énergie sont quant à eux discontinus aux jonctions. Une méthode d’éléments finis discontinus a donc été développée afin de les simuler numériquement comme solutions d’´equations de transport. Si l’on souhaite atteindre le régime diffusif aux temps longs, le schéma numérique doit être peu dissipatif et peu dispersif. La discrétisation spatiale a été faite avec des fonctions d’approximation de type spectrales, et l’intégration temporelle avec des schémas de Runge-Kutta d’ordre élevé du type ”strong stability preserving”. Les simulations numériques ont donné des résultats concluants car elles permettent d’exhiber le régime de diffusion. Il a été remarqué qu’il existait en fait deux limites diffusives différentes : (i) la diffusion spatiale de l’´energie sur l’ensemble de la structure, et (ii) l’équirépartition des densités d’énergie entre les différents modes de propagation. Enfin, une technique de renversement temporel a été développée. Elle pourra être utile dans de futurs travaux sur le contrôle non destructif des assemblages complexes et de grandes tailles
This research is dedicated to the simulation of the transient response of beam trusses under impulse loads. The latter lead to the propagation of high-frequency waves in such built up structures. In the aerospace industry, that phenomenon may penalize the functioning of the structures or the equipments attached to them on account of the vibrational energy carried by the waves. It is also observed experimentally that high-frequency wave propagation evolves into a diffusive vibrational state at late times. The goal of this study is then to develop a robust model of high-frequency wave propagation within three-dimensional beam trusses in order to be able to recover, for example, this diffusion regime. On account of the small wavelengths and the high modal density, the modelling of high-frequency wave propagation is hardly feasible by classical finite elements or other methods describing the displacement fields directly. Thus, an approach dealing with the evolution of an estimator of the energy density of each propagating mode in a Timoshenko beam has been used. It provides information on the local behavior of the structures while avoiding some limitations related to the small wavelengths of high-frequency waves. After a comparison between some reduced-order beam kinematics and the Lamb model of wave propagation in a circular waveguide, the Timoshenko kinematics has been selected for the mechanical modelling of the beams. It may be shown that the energy densities of the propagating modes in a Timoshenko beam obey transport equations. Two groups of energy modes have been isolated: the longitudinal group that gathers the compressional and the bending energetic modes, and the transverse group that gathers the shear and torsional energetic modes. The reflection/transmission phenomena taking place at the junctions between beams have also been investigated. For this purpose, the power flow reflection/transmission operators have been derived from the continuity of the displacements and efforts at the junctions. Some characteristic features of a high-frequency behavior at beam junctions have been highlighted such as the decoupling between the rotational and translational motions. It is also observed that the energy densities are discontinuous at the junctions on account of the power flow reflection/transmission phenomena. Thus a discontinuous finite element method has been implemented, in order to solve the transport equations they satisfy. The numerical scheme has to be weakly dissipative and dispersive in order to exhibit the aforementioned diffusive regime arising at late times. That is the reason why spectral-like approximation functions for spatial discretization, and strong-stability preserving Runge-Kutta schemes for time integration have been used. Numerical simulations give satisfactory results because they indeed highlight the outbreak of such a diffusion state. The latter is characterized by the following: (i) the spatial spread of the energy over the truss, and (ii) the equipartition of the energy between the different modes. The last part of the thesis has been devoted to the development of a time reversal processing, that could be useful for future works on structural health monitoring of complex, multi-bay trusses
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Warrington, Thomas Joseph. "Experiments and simulations of large-angle flexible beam control using an adaptive truss." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-03032009-040343/.

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Stark, John W. "The effect of lateral bracing on the dynamic response of wood floor systems." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-01242009-063313/.

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Webster, Mark S. (Mark Stephen). "Modeling beam-like space trusses with nonlinear joints with application to control." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/43155.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1991.
Title as it appears in the June 1991 M.I.T. Graduate List: A method for modeling beam-like space trusses with nonlinear joints with application to control design and analysis.
Includes bibliographical references (leaves 150-152).
by Mark S. Webster.
Ph.D.
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Li, Minghao. "Seismic performance of post-and-beam wood buildings." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/7570.

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This thesis presents a study to evaluate the seismic performance of post-and-beam (P&B) wood assemblies and buildings of Japanese style using computer modeling, experimental studies and probabilistic-based approaches. A numerical model called “PB3D” is proposed to predict the lateral response of the P&B buildings under static or dynamic loads. Special techniques are used to reduce the problem size and improve computational efficiency with reasonable prediction accuracy. This model simplifies a P&B building into a combination of 2D assemblies (e.g. shear walls, floor/roof diaphragms) while capturing the global structural responses of interest (e.g., inter-story drift and floor/roof acceleration). A mechanics-based wood shear wall model is implemented to represent the hysteretic properties of symmetric/nonsymmetric P&B walls. Roof/floor diaphragms are modeled as structural frames with calibrated equivalent diagonal braces in order to consider the influence of the diaphragm in-plane stiffness on the building performance. Experimental studies have been conducted to study the behavior of 2D assemblies and buildings. The engineering characteristics of single-brace P&B walls have been evaluated by monotonic and reversed cyclic tests. The contribution of additional gypsum wallboards to the wall lateral resistance has also been studied. An in-plane pushover test has been conducted to study the in-plane stiffness of a floor diaphragm. Two one-story P&B buildings have been tested under biaxial static loads and one-directional seismic loads, respectively. The established test database as well as a test database of a two-story P&B building provided by a research institute in Japan has been used to verify the “PB3D” model. Using the response surface method with importance sampling and considering the uncertainties involved in seismic ground motions, structural mass, and response surface fitting errors, seismic reliability analyses have been conducted to estimate the seismic reliabilities of a series of shear walls, a one-story building and a two-story building. System effect on the shear wall reliability has also been studied. The framework presented in this thesis provides a useful tool to assess the seismic performance of the P&B wood buildings and to aid the performance-based seismic design of these structural systems.
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O'Regan, Philip J. "Combined Tension and Bending Loading in Bottom Chord Splice Joints of Metal-Plate-Connected Wood Trusses." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36508.

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Metal-plate-connected (MPC) splice joints were tested in combined tension and bending to generate data that were used in the development of a design procedure for determining the steel net-section strength of bottom chord splice joints of MPC wood trusses. Several common wood truss splice joint configurations were tested at varying levels of combined tension and bending loading. The joint configurations were 2x4 lumber with 20-gauge truss plates, 2x6 lumber with 20-gauge truss plates, and 2x6 lumber with 16-gauge truss plates. All the joints tested failed in the steel net-section of the truss plates. The combined loading was achieved by applying an eccentric axial tension load to the ends of each splice joint specimen. Three structural models were developed to predict the ultimate strength of the steel net-section of the splice joints tested under combined tension and bending loading. The test data were fitted to each model, and the most accurate model was selected. Data from other published tests of splice joints were used to validate the accuracy of the selected model. A design procedure for determining the allowable design strength of the steel net-section of a splice joint subjected to combined tension and bending was developed based on the selected model. The new design procedure was compared with two existing design methods. The proposed design procedure is recommended for checking the safe capacity of the steel net-section of bottom chord splice joints of MPC wood trusses subjected to combined tension and bending.
Master of Science
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Books on the topic "Beam trusses of wood"

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Al-Chaar, Ghassan. Case study: Structural evaluation of heavy wood trusses at Corpus Christi Army Depot, Texas. [Champaign, IL]: US Army Corps of Engineers, Construction Engineering Research Laboratories, 1999.

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Wolfe, Ronald W. Experimental assessment of wood trusses with square-end webs. Madison, Wis: U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1996.

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Issa, Mohsen A. Structural evaluation procedures for heavy wood truss structures. [Champaign, IL]: US Army Corps of Engineers, Construction Engineering Research Laboratories, 1998.

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Gupta, Rakesh. Metal-plate-connected wood joints: A literature review. Corvallis, Or: Forest Research Laboratory, Oregon State University, 1996.

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Gupta, Rakesh. Metal-plate-connected wood joints: A literature review. Corvallis, Or: Forest Research Laboratory, Oregon State University, 1996.

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Gupta, Rakesh. Metal-plate-connected wood joints: A literature review. Corvallis, Or: Forest Research Laboratory, Oregon State University, 1996.

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Cohen, K. Passive damping augmentation of flexible beam-like lattice trusses for large space structures. [S.l.]: Technion-Israel Institute of Technology, Faculty of Aerospace Engineering, 1990.

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Cohen, K. Passive damping augmentation of flexible beam-like lattice trusses for large space structures. Haifa, Israel: Technion Israel Institute of Technology, Faculty of Aerospace Engineering, 1990.

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W, White Charles. Dynamic testing of a two-dimensional box truss beam. Hampton, Va: Langley Research Center, 1987.

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Roos, Joseph. The U.S. glulam beam and lamstock market and implications for Alaska lumber. Portland, OR: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 2009.

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Book chapters on the topic "Beam trusses of wood"

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Zayat, K. A. "Trusses." In Structural Wood Detailing in CAD Format, 60–70. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2104-0_10.

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Stalnaker, Judith J., and Ernest C. Harris. "Timber Trusses." In Structural Design in Wood, 213–40. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-9996-4_10.

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Stalnaker, Judith J., and Ernest C. Harris. "Timber Trusses." In Structural Design in Wood, 221–48. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-4082-3_10.

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Zayat, K. A. "Steel Roof Beam." In Structural Wood Detailing in CAD Format, 74–78. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2104-0_12.

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Giordano, Andrea, Paolo Borin, and Federico Panarotto. "Digital Wood Trusses. Geometry and Parameters/Fabrication and Monitoring." In Lecture Notes in Civil Engineering, 479–509. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-03676-8_18.

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Zayat, K. A. "Sloped Roof at Edge With Ceiling Beam Above Walls or Beams." In Structural Wood Detailing in CAD Format, 25–27. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2104-0_3.

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Milne, Thomas A., Robert J. Evans, and Jonathan Filley. "Molecular Beam Mass Spectrometric Studies of HZSM-5 Activity During Wood Pyrolysis Product Conversion." In Research in Thermochemical Biomass Conversion, 910–26. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2737-7_69.

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Evans, Robert J., and Thomas Milne. "Molecular-Beam, Mass-Spectrometric Studies of Wood Vapor and Model Compounds over an HZSM—5 Catalyst." In ACS Symposium Series, 311–27. Washington, DC: American Chemical Society, 1988. http://dx.doi.org/10.1021/bk-1988-0376.ch026.

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Yuan, Philip F., Jinxi Jin, and Li Han. "From Ang to Steel-Wood Composite Cantilever Beam - Modern Translation of Roof Overhangs in Structural Performance-Based Design." In Proceedings of the 2019 DigitalFUTURES, 17–26. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8153-9_2.

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Nakanishi, Tomoko M. "Water-Specific Imaging." In Novel Plant Imaging and Analysis, 3–37. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4992-6_1.

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AbstractOur first target was water, namely, how to obtain a water-specific image nondestructively. Using a neutron beam, we could visualize water-specific images of plants, including roots and flowers, which were never shown before. Each image suggested the plant-specific activity related to water.We briefly present how to acquire the image and what kind of water image is taken by neutron beam irradiation. We present a variety of plant samples, such as flowers, seeds, and wood disks. It was noted that neutrons could visualize the roots imbedded in soil without uprooting. When a spatial image of the root imbedded in soil was created from many projection images, the water profile around the root was analyzed. Then, fundamental questions were raised, such as whether plants are absorbing water solution or water vapor from the soil, because there was always a space adjacent to the root surface and hardly any water solution was visualized there. The roots are in constant motion during growth, known as circumnutation, and it is natural that the root tip is always pushing the soil aside to produce space for the root to grow. If the roots are absorbing water vapor, then the next question is about metals. Are the roots absorbing metal vapor? Since we tended to employ water culture to study the physiological activity of plants, the physiological study of the plants growing in soil was somewhat neglected. Later, when we could develop a system to visualize the movement of element absorption in a plant, there was a clear difference in element absorption between water culture and soil culture.
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Conference papers on the topic "Beam trusses of wood"

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Tupenaite, Laura, Tomas Gecys, Loreta Kanapeckiene, Seyed Masoud Sajjadian, and Jurga Naimaviciene. "Selection of structural system for wooden public building: Multiple criteria approach." In The 13th international scientific conference “Modern Building Materials, Structures and Techniques”. Vilnius Gediminas Technical University, 2019. http://dx.doi.org/10.3846/mbmst.2019.074.

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There has been a growing interest in the construction industry for using materials with lower environmental impacts, in this context, stakeholders increasingly seeing wood as the natural and sustainable option for public buildings. Studies worldwide have already investigated modern structural systems for wooden construction. However, the selection of alternative structural systems is rarely discussed, alternatives are seldom compared. To close a gap this paper proposes a framework for selection of the structural system for a wooden public building based on a Simple Additive Weighting (SAW) multiple criteria assessment method. The proposed methodology is applied for the case of a public wooden building – shopping centre in Lithuania. Three structural systems (1) double tapered glued laminated beams and columns, (2) laminated veneer lumber (LVL) trusses and columns and (3) single tapered glued laminated beam and I type steel column are compared. The research allowed distinguishing the most efficient structural system according to eight conflicting quantitative and qualitative criteria, which, in this case, contains double tapered glued laminated beams and columns. Proposed assessment framework is relatively simple to apply, therefore can be successfully used in practice.
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Mlynarczyk, Alexandar J. "Insurance Investigation of Damaged Wood Bowstring Trusses." In Eighth Congress on Forensic Engineering. Reston, VA: American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784482018.036.

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Cramer, Steven M., and Steve A. Kennedy. "Analysis of Wood Assemblies with Similar and Dissimilar Trusses." In Structures Congress 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40558(2001)185.

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Morse-Fortier, Leonard J. "What's Wrong with Metal-Plate-Connected Wood-Roof Trusses?" In Second Forensic Engineering Congress. Reston, VA: American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40482(280)31.

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WEBSTER, MARK, and WALLACE VANDE. "Modelling beam-like space trusses with nonlinear joints." In 32nd Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-1225.

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ROBISON, ELWIN C. "STRUCTURAL ANALYSIS OF WOOD TRUSSES OF SAN PAOLO FUORI LE MURA, ROME, ITALY." In STREMAH 2019. Southampton UK: WIT Press, 2019. http://dx.doi.org/10.2495/str190141.

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Le Guennec, Yves, Eric Savin, and Didier Clouteau. "Transient dynamics of three-dimensional beam trusses under impulse loads." In 163rd Meeting Acoustical Society of America/ACOUSTCS 2012 HONG KONG. ASA, 2013. http://dx.doi.org/10.1121/1.4772680.

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Kromoser, Benjamin, and Matthias Braun. "Towards efficiency in constructive timber engineering - design and optimization of timber trusses." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.1141.

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<p>Currently, laminated timber is widely used. The gluing allows for higher part length and involves an advantageous behavior regarding deformations due to shrinkage and lead to better, more regular mechanical properties. The drawback is a low material utilization factor. Starting from a tree trunk, only 25-30 % are part of the final product. Thus, the high-quality product has to be used as efficient as possible.</p><p>At moment mostly, plate girders made of laminated timber are used as a result of the efficient industrialized manufacturing process. If in comparison a truss system is used, a similar load bearing capacity and stiffness can be achieved with much less material effort. The aim of the authors is to industrialize the design and manufacturing process of timber truss systems to be able to compete with the common plate girder systems. The complete process starting from the design, static optimization, work preparation to production process will be cumulated in a continuous digital approach. The paper describes the research approach and experiments about the digital production (by use of a robot arm) and load bearing behavior of different wood- wood connections as first development step. In addition, the design of 1:1 load tests at different timber trusses as well as comparable plate girders is presented.</p>
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Lynch, Jaret, and Joseph Bukovec. "Case Study: Failure and Repair of Historic Wood Trusses at St. John the Baptist Church, Hoboken, NJ." In Sixth Congress on Forensic Engineering. Reston, VA: American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412640.131.

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Song, Xiaobin, and Frank Lam. "Stability Analysis of Eccentrically Loaded Wood Beam-Columns." In Structures Congress 2008. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/41016(314)54.

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Reports on the topic "Beam trusses of wood"

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Turk, Chris, John F. Hunt, and David J. Marr. Cantilever-beam dynamic modulus for wood composite products. Part 1, apparatus. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 2008. http://dx.doi.org/10.2737/fpl-rn-308.

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