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Showing 1 to 17 of 17 for “"Wood structures"”.
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Load and resistance factor design for wood structures
… materials such as steel, concrete, and wood based on probabilistic concepts. The objective of this study is to study a probability based design format for wood members. Reliability analysis of wood structural elements such as beams, columns, and beam-columns is conducted, and the risk …
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Effects of Long-Term Creep on the Integrity of Modern Wood Structures
… to the presence of multiple components in wood with different temperature dependence. Long-term creep tests were also conducted in tension and in compression at 20° C and 12% moisture content for over 2 years. The resulting compliance curves were fitted to the power law equation using a …
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Failure Prediction of Spatial Wood Structures: Geometric and Material Nonlinear Finite Element Analysis
… purpose of this study is to investigate spatial wood structures, trace their response on equilibrium paths, identify failure modes, and predict the ultimate load. The finite element models of this study are based on the Crafts Pavilion dome (Triax) in Raleigh, North Carolina, and the Church of …
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The Effects of Diaphragm Flexibility on the Seismic Performance of Light Frame Wood Structures
… on the seismic performance of light frame wood structures (LFWS). The finite element approach is considered for modeling LFWS as it is more detailed and provides a way to explicitly incorporate individual structural elements and corresponding material properties. It is also suitable for …
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Stochastic dynamic response of wood structural systems
… in characterizing the dynamic behavior of wood structures have hindered investigations into their performance under dynamic loading. Because of this, wood structures are treated unfavorably in seismic design codes, even though past damage assessment surveys after seismic events indicated …
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Hysteresis modeling of wood joints and structural systems
… in characterizing the dynamic behavior of wood structures have hindered investigations into their performance under dynamic loading. Because of this, wood structures are treated unfavorably in seismic design codes, even though past damage assessment surveys after seismic events indicated …
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Seismic design of a current woodframe structure and study of innovative products and damping systems in wood construction
Wood structures have seen resurgence in popularity over the past several decades, especially in Western States of America, such as California. The industry keeps creating new structural wood products of exceptional strength, versatility, and reliability. Woodframe structures offer a more …
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Suitability of salvaged timber in structural design
… annual demolition of thousands of buildings and wood structures results in thousands of tons of waste earmarked for incineration or landfill disposal. There exists a great potential to reuse most of the wood already standing in today's structures for tomorrow's construction. Identifying …
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Development of tension and compression creep models for wood using the time-temperature superposition principle
… creep on the safety and serviceability of modem wood structures and structural wood composites. Long-term creep models were developed for wood in tension and compression using the Time-Temperature Superposition Principle (TTSP). The principle states that the long-term response of a polymer at …
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Strength characterization of wood to wood connections using stress field analysis
… current practice favors steel connections for wood structures. Wood to wood connections offer a solution to the minimization of steel connections. While some wood-only connections are referenced in timber codes, small modifications to these designs as well as a multitude of other possible …
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The Effects of Bolt Spacing on the Performance of Single-Shear Timber Connections Under Reverse-Cyclic Loading
Much previous experimentation related to wood structures has employed monotonic loading to replicate static situations. However, instances of natural hazards have raised interest in the response of structural connections to dynamic loads. This increased interest led the Consortium of Universities …
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Synthesis and characterization of implants for bone substitutions made of biomedical apatites containing silicon
… by taking inspiration by Nature, so that native wood structures were treated in chemical and thermal way to obtain hydroxyapatite porous materials characterized by the same morphology as the native wood. The results obtained in the present work were positive in all the three different areas of …
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Moisture conditions in rain exposed wood joints - Experimental methods and laboratory measurements
… concerns the moisture conditions in rain exposed wood structures, i.e. wood exposed to high moisture levels. The focus was on the microclimate (the climate at the wood surface) and the material climate (the wood moisture content) in joints. Methods for determination of microclimate, i.e. the …
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Use of Permanent Magnets to Improve the Seismic Behavior of Light-Framed Structures
Light-framed wood structures generally have satisfied the life safety objective of the current seismic design approach. The main source of energy dissipation in such structures is the inelastic behavior of the connectors connecting framing and sheathing elements. Wood framed structures when …
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Long-term creep modeling of wood using time temperature superposition principle
… of the master curves for predicting creep of wood exposed to normal interior environmental conditions in buildings was tested by conducting long-term (10 month) creep tests in a heated/cooled laboratory environment. The fluctuating test environmental conditions caused geometry changes in the …
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Detection and assessment of wood decay – glulam beams and wooden utility poles
… of acoustic and ultrasonic inspection methods on wooden glulam beams and utility poles. All beams and poles examined where composed of Douglas-fir. The report begins with a description of the structure of trees, the mechanical behavior of wood subjected to rot, and current utility pole inspection …
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ΔΙΑΚΥΜΑΝΣΗ ΤΩΝ ΔΟΜΙΚΩΝ ΧΑΡΑΚΤΗΡΩΝ ΤΟΥ ΞΥΛΟΥ ΤΟΥ ΚΥΠΑΡΙΣΣΙΟΥ (CUPRESSUS SEMPERVIRENS L.) ΣΤΗΝ ΕΛΛΑΔΑ
THE WOOD ANATOMY OF CYPRESS (CUPRESSUS SEMPERVIRENS L.) IN THE TWO MAIN VARIETIES, THE PYRAMIDALIS AND THE HORIZONTALIS IN THREE NATURAL REMOTE POPULATIONS (CRETE, RHODES, SAMOS) AND IN A PLANTATION (PELOPONNESE) WITH TREES OF BOTH VARIETIES WAS STUDIED . FOUR TREES WERE CUT FROM EACH REGION AND …