Search or ask a question

What is a cost effective and efficient way to stiffen a floor and prevent joists from twisting?

Deflection (engineering)

Answers from top 5 papers

PDF

Open Access

More filters

Papers (5)	Insight
Journal Article•DOI Classification of Human Induced Floor Vibrations Tomi Toratti, Asko Talja - Show less +1 more 01 Sep 2006-Building Acoustics 38 Citations	It is further suggested that the deformation caused by the point load is divided into a local deflection mainly caused by soft toppings and floating floors and a global deflection of the main floor joists.
Open access•Journal Article•DOI Cross-Shaped Twisting Structure Using SMA-Based Smart Soft Composite Hugo Rodrigue, Wei Wang, Binayak Bhandari, Min-Woo Han, Sung-Hoon Ahn - Show less +4 more 10 Apr 2014-International Journal of Precision Engineering and Manufacturing-Green Technology 47 Citations	Results show that the cross-shaped actuator is capable of a higher twisting rate by using a thinner flange due to a more stable twisting motion.
Journal Article•DOI Buckling Behavior of Sinusoidal Web for Composite Wood I-Joist with Elastically Restrained Loaded Edges under Compression An Chen, Julio F. Davalos, Pengcheng Jiao, Bradley McGraw - Show less +3 more 01 Aug 2013-Journal of Engineering Mechanics-asce 18 Citations	Wood I-joists are efficient and lightweight structural members that are well suited for long-span floor and rafter applications.
Open access•Journal Article•DOI A Comparison on Numerical Simulation Models for Vibrational Performances of the Wood Truss Joist Floor System Yinlan Shen, Haibin Zhou, Shuo Xue, Jinchuan Zhang - Show less +3 more 22 Jul 2021-Shock and Vibration 2 Citations	The sheathing-to-joist connections and the metal plate connections of the joists have significant influences on the vibration response of the wood truss joist floor.
Journal Article•DOI Wood Floor Behavior: Experimental Study Ricardo O. Foschi 01 Nov 1985-Journal of Structural Engineering-asce 20 Citations	The variability in floor strength is substantially lower than the variability in bending strength of individual joists.

My columns

Related Questions

How does fiber orientation influence the material stiffnes?4 answersFiber orientation has a significant influence on the stiffness of a material. The orientation of fibers affects the local and global mechanical behavior of the material. In short fiber-reinforced thermoplastic composites, the orientation of fibers and their distribution can result in locally non-uniform strain fields. Fibers aligned in the direction transverse to loading can impede transversal shrinkage, leading to locally small compressive strain in that direction. The average fiber orientation remains relatively unchanged even after large deformation, indicating that the initially-determined fiber orientation is crucial for the locally anisotropic mechanical behavior. Additionally, the local volume fraction of fibers plays a role in determining the stiffness of the material. A laminate optimization method can be used to improve the stiffness of printed parts by optimizing fiber orientation for each layer. Embedding fibers along the principal stresses in a load-oriented manner can enhance the mechanical properties of additively manufactured plastic parts.

How to reduce floor impact noise?5 answersTo reduce floor impact noise, several methods can be employed. One approach is to improve the floor structure construction method by changing the composition of the upper part of the slab and including a damping material. Another method involves using impact absorbers, support frames, insulating materials, and grid mesh to create an integrated floor structure that prevents separation of each member and reduces vibration and noise. Additionally, a floor structure can be constructed using wall heat-insulation materials, pipe layers, elastic layers, damp-proof layers, heat-insulation layers, floor layers, and noise reduction plates to minimize inter-floor noise. Another technique is to use a vibration-proof material, an EVA layer with resonance holes, and a vibration dissipating unit to offset and reduce the amplitude of impact sound vibrations. Finally, a shock absorbing material with multiple sound absorbing layers can be used to effectively reduce inter-floor noise in various types of buildings.

What are the most effective ways to reduce costs in an organization?4 answersThe most effective ways to reduce costs in an organization include implementing cost control/reduction tools and techniques in manufacturing organizations, applying best practices for business process design that lead to cost effectiveness, matching the work that needs to be done with the number of employees needed to do the work, and utilizing nondelegable senior leader roles for goal setting, use of data, organization-wide accountable change models, and culture characteristics in healthcare organizations. These approaches involve reducing process costs with Lean, Six Sigma, and Value Engineering techniques, evaluating the impact of best practices on cost reduction through a pattern-based cost calculation methodology, focusing on work processes and customer needs, and seeking fresh approaches to meet strategic imperatives in healthcare organizations.

What is the most cost effective insulation?10 answers

What is the most cost effective roof material?7 answers

Which roofing material is most cost effective?7 answers

See what other people are reading

How does earthquake in mountain catchment affects the river response in terms of sediment processes and landforms?

Large earthquakes in mountain catchments can have significant impacts on river responses in terms of sediment processes and landforms. These seismic events can lead to both mountain growth through topography building and mass removal via widespread mass wasting. The altered fluvial sediment dynamics post-earthquake can result in changes in sediment distribution within river channels. Studies have shown that seismic signals caused by water flow, sediment transport, and debris flow can be captured by seismic stations near river channels, providing insights into sediment mass distribution. Additionally, high-concentration flow events triggered by localized rainfall post-earthquake can lead to substantial increases in exposed gravel along river channels, causing channel aggradation and impacting sediment transport.What are the unmet needs of braiding machines ?

Braiding machines face several unmet needs despite their advancements. Traditional braiding machines have fixed carrier paths, limiting the geometry parameters along the braid's axis. Radial braiding machines suffer from axial clearance issues affecting speed and stability, leading to yarn fuzzing and poor fiber continuity. To address these challenges, innovative designs like noncoplanar horn gears have been proposed to reduce clearance, vibration, and shock in radial braiding machines. Additionally, algorithms for topological modeling of braids with complex cross-sections aim to streamline machine configurations for braiding profiles with arbitrary forms, reducing time and resource consumption in experimental trials. These advancements highlight the ongoing efforts to enhance braiding machines' capabilities and overcome existing limitations.What factors affect the hydraulic conductivity of soil?

The hydraulic conductivity of soil is influenced by various factors. Soil properties such as bulk density, wet-aggregate stability, and surface roughness play significant roles. Additionally, the soil's microstructure, texture, grain size, distribution of pore sizes, organic matter content, and clay minerals also impact hydraulic conductivity. Furthermore, the presence of cement affects the hydraulic conductivity of cemented sand, with cement content influencing pore volume and interconnected voids within the samples. Empirical equations utilizing particle size distribution data are commonly used to estimate hydraulic conductivity, but the presence of different soil particles like sand, silt, and clay can affect the accuracy of these estimations. Factors such as soil structure, composition, and adsorption capacity can also affect the hydraulic properties of clay mixtures used as engineered barriers.What is the impact of tyre failure on road traffic accidents?

Tyre failure significantly impacts road traffic accidents by contributing to crashes through various mechanisms. Studies show that tyre failure can lead to loss of stability and control, increasing the risk of rollovers and non-collision crashes. Causes of tyre failure include over-inflation, under-inflation, wear, and overloading, with a lack of awareness among drivers exacerbating the issue. Additionally, tyre failure can result in sudden slowdowns and trajectory deviations, affecting the dynamics of vehicle movement and potentially endangering other road users. In regions like the Indian subcontinent, underinflated tyres are linked to a significant number of accidents, injuries, and fatalities annually, emphasizing the critical role of tyre maintenance in accident prevention. Inadequate tyre characteristics combined with high ambient temperatures further increase the likelihood of tyre failure-related accidents, especially during peak temperature periods.How does optimization enhance titanium milling using force as output?

Optimization plays a crucial role in enhancing titanium milling by utilizing force as an output parameter. Various studies have focused on optimizing milling parameters to minimize milling force and improve machining quality. By employing techniques such as multi-feature fusion models, support vector machine (SVM) and ant colony optimization (ACO), analysis of variance (ANOVA) and regression analysis, and finite element simulation-based methods, researchers have successfully identified optimal milling parameters. These optimized parameters lead to reduced milling forces, lower milling temperatures, decreased noise and vibration levels, and improved machining efficiency. Optimization techniques not only help in achieving the desired machining quality and accuracy but also contribute to saving time and resources in the titanium milling process.How does the design of the packaging (bottles) influence the storage and application of general purpose glue?

The design of packaging, specifically bottles, significantly impacts the storage and application of general-purpose glue. Innovative bottle shapes can save space in storage and transportation, reduce CO2 emissions, and enhance product competitiveness. Additionally, incorporating features like a brush, glue outlet pipe, and handle in a bottle design can improve cleanliness, convenience, and work efficiency during glue application. Furthermore, utilizing hydraulic extending-and-contracting rods in glue application equipment allows for convenient production on various-sized paper product packaging boxes, with adjustable glue output amounts for efficiency and convenience. Moreover, thermoformed sheet packaging for bottles provides shock protection through cushioning buffers and allows for nesting multiple bottles for storage, enhancing overall bottle protection and organization. Overall, these diverse bottle packaging designs optimize glue storage, application, and efficiency.Can steel hardness be determined by residual stress?

Residual stress in steel can indeed provide valuable insights into its hardness. Studies have shown that there exists a correlation between residual stress and hardness in steel components. For instance, in laser-hardened materials, residual stress distribution is closely related to surface hardness. Similarly, during surface grinding of steel, the hardness change correlates with the thermal loads and resulting residual stresses. Furthermore, a novel method for estimating surface integrity in end-milling involves analyzing cutting forces to estimate hardness and residual stress, showcasing their interdependence. Therefore, by evaluating residual stress levels, one can infer the hardness of steel components, making residual stress a valuable indicator of steel hardness in various manufacturing processes.How to reduce traffic caused by train construction?

To mitigate traffic disruptions caused by train construction, various strategies can be implemented. One approach involves implementing a three-step adjustment framework, which includes selecting significantly affected bus routes, designing stop-skipping and truncation strategies, and providing feeder bus services to ensure spatial coverage near the construction area. Additionally, incorporating aerodynamic guide plates and impact covers on trains can help reduce the whirling up of loose objects from track beds, enhancing safety and minimizing potential traffic obstructions. Furthermore, the use of sound absorption layers along railway tracks and roads can help dampen airborne noise, improving the urban environment and reducing disturbances caused by construction activities. By combining these measures, it is possible to effectively manage and alleviate traffic issues resulting from train construction projects.How can i Protect Environmnent?

To protect the environment, various innovative devices and systems can be utilized. Implementing environment protection devices like those described in Context_1, Context_2, and Context_4 can aid in improving air quality, reducing waste, and preventing pollution. Additionally, employing environment-protecting equipment for communities as outlined in Context_3 can help in proper waste management and sanitation. Furthermore, utilizing environment protection systems such as the one detailed in Context_5, which includes data collection, early warning, communication, and action subsystems, can effectively safeguard the environment by monitoring water quality and implementing necessary protective measures. By integrating these devices, equipment, and systems, individuals and communities can actively contribute to environmental protection.Does topographic wetness index from drone image better than the one from LIDAR?

The Topographic Wetness Index (TWI) derived from LiDAR data has been extensively studied for various applications. Research by Waga et al.demonstrates that LiDAR-derived TWI can accurately predict road quality in forest environments. Additionally, Altunelhighlights the importance of DEM datasets, including those generated by LiDAR, in calculating TWI for water accumulation assessments. Moreover, Bian et al.showcase the effectiveness of LiDAR-derived TWI in rapidly delineating wetlands with high accuracy. While drone imagery can also provide valuable data, the precision and accuracy of TWI calculations seem to be more consistently demonstrated with LiDAR data across different studies. Therefore, based on the existing research, the TWI derived from LiDAR data appears to be more reliable and effective compared to TWI derived from drone imagery for various applications.How will phosphorus cycling change as glaciers melt?

As glaciers melt, phosphorus (P) cycling is anticipated to undergo significant changes, influenced by various interconnected processes. The retreat of glaciers, particularly in the Arctic Ocean region, is expected to alter nutrient cycles, with phosphate being a key limiting nutrient for marine life. The benthic burial and recycling of phosphorus will likely be affected, as demonstrated by studies in the Eurasian Arctic margin, where phosphorus is generally lost from sediments with depth during organic matter respiration. This process is influenced by the fluxes of fresh organic matter and active iron cycling, suggesting that changes in primary productivity, ocean circulation, and glacial melt will modify benthic P cycling with implications for the Arctic Ocean Basin. The destabilization of methane hydrates due to falling sea levels, a consequence of glacial melting, can mobilize sedimentary phosphorus and transfer it to the oceanic reservoir, potentially altering the oceanic phosphorus cycle on glacial-interglacial timescales. Furthermore, the early stages of soil formation in previously glaciated areas show that microbial processes play a crucial role in controlling the redistribution of primary phosphorus into inorganic and organic soil pools, indicating that glacier retreat could influence terrestrial phosphorus cycling through changes in microbial activity. Climate change, which contributes to glacier melt, is likely to affect soil phosphorus cycling by increasing the prevalence of reduced phosphorus forms and free phosphate in soils, altering redox processes and the behavior of chemically reduced phosphorus compounds. Additionally, the response of the marine phosphorus cycle to changing environmental conditions, such as those associated with glacial-interglacial cycles, highlights the complexity of interactions between continental supply, oceanic mixing, sea level changes, and phosphorus cycling. The terrestrial phosphorus cycle has also been influenced by past variations, such as the rapid uplift of the Himalayan-Tibet Plateau, which led to enhanced phosphorus input to the oceans. This historical perspective underscores the potential for significant changes in phosphorus cycling due to current glacier melt. Geochemical analysis of lake-sediment cores has revealed large changes in terrestrial P cycling over glacial timescales, further supporting the notion that glacier melt can significantly impact phosphorus dynamics. The enhanced frequency and intensity of freeze-thaw cycles, a consequence of global climate change, have been shown to influence soil carbon and phosphorus cycling, suggesting that similar processes may occur as glaciers melt, affecting the availability and cycling of phosphorus in terrestrial ecosystems. Finally, studies in Antarctic ice-free areas, which experience greater temperatures and availability of liquid water during summer, have shown different patterns of soil phosphorus cycling compared to glacial boundaries, indicating that glacier melt could lead to distinct biogeochemical processes in these ecosystems.