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Showing 1 to 10 of 10 for “"Strength Reduction Factor"”.
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Evaluation of Strength Reduction Factor for Concentrically Braced Frames Based on Nonlinear Single Degree-of-Freedom Systems
<p>Strength Reduction Factor (R-Factor), often referred to as Response Modification Factor, is commonly used in the design of lateral force resisting systems under seismic loading. R-Factors allow for a reduction in design base shear demands, leading to more economical designs. The reduction of …
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Flexural Behavior of CFRP-Pretensioned Girders
… of loading cycles. The combination of these factors can result in deterioration of highway bridge beams’ serviceability and strength. Beams prestressed with steel are susceptible to corrosion when subjected to environmental exposure. The corrosion of the prestressing steel reduces the beams’ …
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Resistance Factor for Cold-Formed Steel Compression Members
This research 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 …
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Shear Strength of Full-Scale Prestressed Lightweight Concrete Girders with Composite Decks
… deal of uncertainty as to how to calculate the strength of this material when designing for shear in beams. Design codes tend to penalize lightweight concrete due to its lower tensile strength and smoother interface along the shear cracks. In this study, there were twelve tests on six …
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Irregular Welded Rectangular Hollow Section Truss-type Connections
… other geometric parameters. By comparing the strength of longitudinally offset models and corresponding control models, a required minimum chord end distance is proposed, along with a strength reduction factor in case the minimum end distance is not satisfied. For laterally offset …
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Reliability-based durability assessment of GFRP bars for reinforced concrete
… the application of environmental and flexural strength reduction factors, which have minimal experimental validation. Our goal in this research is the development of a Monte Carlo simulation to assess the durability of glass fiber reinforced polymer (GFRP) reinforced concrete designed for …
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Comparison and Analysis of the Strength, Stiffness, and Damping Characteristics of Concrete with Rubber, Latex, and Carbonate Additives
… the fine aggregate to measure their effects on strength, stiffness, damping, and air content. The additives included rubber particles from recycled tires, calcium carbonate particles, styrene butadiene rubber (SBR) latex, and a commercially available product named ConcreDamp which contains …
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Design and Behavior of Composite Steel-Concrete Flexural Members with a Focus on Shear Connectors
… consider effect of degree of shear connection on strength reduction factor is proposed. Finally, while basic analysis theories between the two are similar, requirements for determining the strength of composite beams in Eurocode 4 (CEN 1992) and 1999 AISC Specification (AISC 1999) differ in many …
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Web crippling behaviour of cold-formed steel sections with circular web openings under one-flange loading
… techniques, the material thickness and strength of channel section is increased but research on the cold-formed steel members with web openings is limited. Therefore, the behaviour and design of cold-formed steel channel members with web openings are investigated in this study. …
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ANCHORAGE OF HEADED REINFORCING BARS IN CONCRETE
… directions of the specimen; concrete compressive strengths ranged from 4,200 to 8,620 psi; and stresses in the bars at failure ranged from 49,500 to 117,000 psi. The No. 6 headed bars had a net bearing area of 4Ab and a lap length of 12 in. The center-to-center spacing between the spliced bars was …