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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 47 for “"resistance factor"”.
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Resistance Factor for Cold-Formed Steel Compression Members
… investigates if the LRFD strength reduction factor for cold-formed steel compression members can be increased above its current value of Ï c = 0.85, which was established by the LRFD Cold-Formed Steel Design Manual (1991) on the basis of 264 column tests. The resistance factor in the Canadian …
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Load and resistance factor design for wood structures
… used in conjunction with the predetermined load factors and load combinations to determine resistance factors. Finally, a design format is proposed for Load and Resistance Factor Design for wood structures.
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Load and resistance factor design of shallow foundations for bridges
Load Factor Design (LFD), adopted by AASHTO in the mid-1970, is currently used for bridge superstructure design. However, the AASHTO specifications do not have any LFD provisions for foundations. In this study, a LFD format for the design of shallow foundations for bridges is developed. Design …
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Load and resistance factor design of cold-formed stainless steel structural members
… States. Recently, the probability-based load and resistance factor design (LRFD) criteria have been successfully applied to the structural design of hot-rolled steel shapes and built-up members. The AISI LRFD Specification is being developed as well for the design of structural members cold-formed …
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Numerical Study and Load and Resistance Factor Design (LRFD) Calibration for Reinforced Soil Retaining Walls
Load and resistance factor design (LRFD) (often called limit states design (LSD)) has been mandated in the AASHTO Bridge Design Specifications and will be adopted in future editions of Canadian Highway Bridge Design Code for all transportation-related structures including reinforced soil retaining …
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Analysis of NEIL3 expression : a possible resistance factor to cancer chemotherapy in paediatric cancer cells
… ALL cell line. Therefore, NEIL3 could be a resistance factor to cancer chemotherapy in paediatric cancer cells and may be a novel target for the treatment of paediatric cancers.
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Load and resistance factor design of drilled shafts in shale using SPT and TCP measurements
… These methods are generally based on Load and Resistance Factor Design (LRFD) methods that relate uniaxial compressive strength measurements of rock cores to the side and tip resistance for drilled shafts. However, shale and other weak rock can be notoriously difficult to effectively sample and …
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Load and resistance factor design of drilled shafts subjected to lateral loading at service limit state
… (AASHTO) has made utilization of Load and Resistance Factor Design (LRFD) mandatory on all federally-funded new bridge projects (AASHTO, 2007). However, currently, there are no guidelines implementing LRFD techniques for design of drilled shaft subjected to lateral loads using …
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System Reliability Analysis of Defected Pile group Foundations
… foundations installed in sand and calibrates the resistance factor of pile group foundation, utilizing a rational based system reliability analysis. This was achieved by conducting a comprehensive numerical parametric investigation using the computer program ABAQUS/Standard. The result of the …
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Reliability based criteria for cold-formed steel members
… structural failure by using an appropriate factor of safety selected primarily on the basis of engineering judgment and long-time experience.</p> <p>Recently, in the United States, the concepts of risk and reliability analysis have been successfully applied to the Load and Resistance Factor …
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Reliability analyses for foundation and soil reinforcement applications
… represent geotechnical parameters, such as pile resistance model bias, due to its non-negative property and mathematical simplicity. However, pile resistance bias data may exhibit multi-modal behaviour and complex tails not captured by lognormal distributions. This thesis uses the Kernel …
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IN-VIVO SCLERAL AND CORNEAL BIOMECHANICS AS BIOMARKERS IN OPHTHALMIC PRACTICE
… parameters (Corneal Hysteresis, Corneal Resistance Factor) generated from these devices are merely an estimation of the biomechanical properties of the cornea. These surrogate parameters cannot be used as material properties in a physically accurate finite element model. Neither can it be …
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A Load-Deflection Study of Fiber-Reinforced Plastics as Reinforcement in Concrete Bridge Decks
… of lightweight, high tensile strength, corrosion resistance, flexibility, and electromagnetic resistance. This paper looks at the use of FRP as reinforcement in concrete beams and compares the information from deflection measurements of different configurations. Also, a material cost comparison is …
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Comparison of LRFD and allowable stress design criteria for the design of multi-story frames
Load and Resistance Factor Design is a set of specifications for the design of steel structures. It is based on a consistent probability of failure and the concept of limit states. The main difference between LRFD and the traditional Allowable Stress Design method is the use of load and resistance …
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Bending and Shear Behavior of Pultruded Glass Fiber Reinforced Polymer Composite Beams With Closed and Open Sections
… ratio, high stiffness, superior corrosion resistance, and high fatigue and impact resistance, among others, make FRPs an attractive alternative to conventional construction materials for use in developing new structures as well as rehabilitating in-service infrastructure. As the number of …
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Reliability analysis of single-headed anchor bolts
… on the ACI, the PCI and the proposed Load and Resistance Factor Design (LRFD) equations. Available data from test results on the anchor bolts and welded studs were analyzed. Then, based on the analysis of these data and statistical information on basic design variables, a reliability analysis …
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Stiffener Design for Beam-to-Column Connections
… the column web and stiffeners. The AISC Load and Resistance Factor Design Specifications provides guidelines for determining the stiffener area but no specifications are given. The actual loads taken by the stiffener and web are therefore not truly known. In this study, experiments were done to …
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Feasibility of fiber reinforced composite materials used in highway bridge superstructures
… sections are designed according to the 'Load & Resistance Factor Design'. For composite materials, 'Elastic Design' is selected. The results derived are as expected. Substantial weight saving is achieved by simply replacing concrete or steel with composite materials. This also results in many …
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A new approach to predictive modelling of flow of hydrophobically associating polyacrylamide polymers in porous media.
Associative polymers provide a high resistance factor due to their thickening effect. However, the high resistance factor may simply reflect pore plugging in the porous media. This offers a significant limitation for the deep propagation of the beneficial effect of viscous thickening arising from …
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Fungicide Sensitivity of Erysiphe necator and Plasmopara viticola from Virginia and nearby states
… point mutation, which confers high levels of QoI resistance, was quantified in DM and PM isolates by real-time PCR. Most of the QoI-resistant DM and PM isolates contained >95% of the 143A allele. QoI-sensitive DM isolates contained less than 1% of 143A. One out of 145 and 14 out of 154 …
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