Reliability-Based Code Calibration for Design of Wood Members Using Load and Resistance Factor Design

Rosowsky, David V.; Gromala, David S.; Line, Philip

doi:10.1061/(asce)0733-9445(2005)131:2(338)

Cited by 7 publications

(9 citation statements)

References 4 publications

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“…In the tables, reliability indices are presented for limit states g (β g ) and g u (β gu ). Note that the baseline values for reliability index β g in Table 4 are somewhat lower than those reported by Rosowsky et al [10] (approximately 2.3 compared to 2.7), although the same RV statistics are used. This difference occurs because in the previous work, reliability index was evaluated using a first order, second moment approach (FOSM), which assumes all RV distributions as normal, while values computed in this study are based on the actual distributions as described earlier (i.e.…”

Section: Resultsmentioning

confidence: 72%

“…To examine the effects of load path uncertainty on wood structural component reliability, a reliability analysis can be conducted considering this governing load combination. For this analysis, dead load is taken as a normal RV [1,10] with bias factor λ (i.e. ratio of mean value to nominal code value) of 1.05 and COV of 0.10.…”

Section: Reliability Analysismentioning

confidence: 99%

“…For roof live load, the 50-year maximum is considered, also modeled as an extreme type I with bias factor of 1.0 and COV of 0.25 [1,10]. Structural resistance is modeled as an extreme type III distribution, with CDF shown in eq.…”

Section: Reliability Analysismentioning

confidence: 99%

“…Structural resistance is modeled as an extreme type III distribution, with CDF shown in eq. 3, where the statistical parameters for sawn lumber and glued-laminated (glulam) beams and columns are taken from Rosowsky et al [10], and given in Table 3.…”

Section: Reliability Analysismentioning

confidence: 99%

“…Various studies have examined the reliability of wood structures for the general development of reliability-based design [7][8][9][10][11][12][13][14], as well as specific loads, components, and systems such as high wind events [15][16][17][18], wall and roof systems [10], [19][20][21][22][23], sheathing panels [24][25][26][27][28]; and shear walls [29][30][31][32][33]. The probabilistic models developed from this body of work for structural loads and resistance account for variations in load magnitude, frequency, and location, as well as variation in material strength and geometry that lead to uncertainty in component resistance.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Load path uncertainty in a wood structure and the effect on structural reliability

Wang

Eamon

2013

Engineering Structures

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The roof truss bearing points of a light-framed wood house were instrumented with load cells. It was found that under dead load alone, symmetric and theoretically identical truss reactions have significant variation. A similar degree of reaction discrepancy was found under the application of uplift pressures caused by hurricane winds. Analysis revealed that the majority of this discrepancy is caused by inherent uncertainties in load path. Although uncertainties in load magnitude and material resistance are accounted for in design by use of appropriate load and resistance factors, load path is generally taken to be deterministic. In this study, load path uncertainty in a test structure is statistically quantified and the effect on the reliability of wood structural members is investigated. Although large uncertainties in reactions were present, it was found that the resulting influence on reliability was modest, with decreases in component reliability index ranging from 5-15%.

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Section: Resultsmentioning

confidence: 72%

Section: Reliability Analysismentioning

confidence: 99%

Section: Reliability Analysismentioning

confidence: 99%

Section: Reliability Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Load path uncertainty in a wood structure and the effect on structural reliability

Wang

Eamon

2013

Engineering Structures

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Data‐driven reliability and cost‐based design optimization of steel fiber reinforced concrete suspended slabs

Alotaibi

Nassif

Barakat

2023

Structural Concrete

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The governing failure mode for flat slabs is punching shear, which occurs when the punching forces exceed the slab resistances in the critical area around the column surface. Recently, considerable knowledge has been obtained on understanding steel fiber reinforced concrete (SFRC) suspended slabs as a sustainable and reliable technique to enhance post-cracking behavior and resist loading effects, including punching shear. The properties of the materials, loading, and dimension vary inevitably and may be represented in the form of statistical distributions. In this study, all parameters affecting the punching shear of the SFRC suspended slabs were treated as random variables.Monte Carlo simulations (MCS) and punching shear model developed previously using Artificial Neural Network (ANN) were combined (ANN-MCS) to conduct a reliability analysis, cost optimization, and model calibration. Reliability results have shown that the inclusion of fibers increased the safety level (20% in terms of the reliability index β) of the slabs against punching shear. Furthermore, a reliability-based cost optimization was performed on the ANN-MCS model. The optimization outcomes demonstrated steel ratio has a significant impact on SFRC slab cost, and thus it should be minimized/reduced when the steel fibers are included in the mix. Moreover, the ANN model was calibrated following a code calibration procedure to account for the model, material, and fabrication uncertainties. The calibration results have shown that a reduction factor of 0.6 should be applied to the ANN-based model to achieve the target reliability level, β ≥ 2.5.

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Strength design values of high-performance bamboo-based composite materials based on reliability requirements

Zheng

Zhou

Wang

et al. 2023

Construction and Building Materials

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Reliability-Based Code Calibration for Design of Wood Members Using Load and Resistance Factor Design

Cited by 7 publications

References 4 publications

Load path uncertainty in a wood structure and the effect on structural reliability

Load path uncertainty in a wood structure and the effect on structural reliability

Data‐driven reliability and cost‐based design optimization of steel fiber reinforced concrete suspended slabs

Strength design values of high-performance bamboo-based composite materials based on reliability requirements

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