Determination of Grades and Design Strengths of Machine Graded Lumber in Korea

Hong, Jung-Pyo; Lee, Jun-Jae; Park, Moon-Jae; Yeo, Hwanmyeong; Pang, Sung-Jun; Kim, Chulki; Oh, Jung-Kwon

doi:10.5658/wood.2015.43.4.446

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…The studies containing the test results on compressive strength have no disclosed tensile properties. Accordingly, the tensile strengths were obtained from relevant standards and papers, such as, CSA O86-19 [33] for Canadian Hemlock and Hong et al [34] for Korean larch and pine.…”

Section: Compression Strengthmentioning

confidence: 99%

Comparative Study on Various Strength Parameters of Structural Elements Made from Cross-Laminated Timber

Anwar‐Us‐Saadat¹,

Goonewardena²,

Kafle³

et al. 2022

Journal of Renewable Materials

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Cross laminated timber (CLT) is an innovative and environment friendly engineered timber product with superior structural performance. CLT offers strong resistance against both in-plane and out-of-plane loading. Hence, it is widely used as floors, roofs or wall elements. Considerable experimental research on CLT under various loading conditions has been done in the recent past. This article presents a comprehensive review of various design methods to determine basic mechanical properties such as tension, compression and rolling shear strength of CLT with primary focus on Norway spruce. All relevant experimental data available from existing literature were collated and consequently been used to evaluate the performance of various methods to design CLT structures. The comparison revealed that different methods show considerable variance in predicting the capacity of CLT panels due to the variation in timber species, which affects the corresponding mechanical properties of the lamella. In addition to species, rolling shear properties can also vary considerably depending on the type of experimental technique used for testing. A predictive model has also been proposed to correlate rolling shear strength obtained from shear analogy method to that obtained using planar shear.

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Section: Compression Strengthmentioning

confidence: 99%

Comparative Study on Various Strength Parameters of Structural Elements Made from Cross-Laminated Timber

Anwar‐Us‐Saadat¹,

Goonewardena²,

Kafle³

et al. 2022

Journal of Renewable Materials

View full text Add to dashboard Cite

show abstract

Analysis of Allowable Stresses of Machine Graded Lumber in Korea

홍정표¹,

오정권²,

Park

et al. 2015

Journal of the Korean Wood Science and Technology

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365 pieces of domestic 38 × 140 × 3600 mm Red pine structural lumber were machine graded conforming to a softwood structural lumber standard (KS F 3020). The allowable bending stresses calculated for each grade were compared with the values currently tabulated in the standard. Four calculation methods for lower 5 th percentile bending stress were non-parametric estimation with 75% confidence level, 2-parameter and 3-parameter Weibull distribution fit, and bending modulus of rupture (MOR)-modulus of elasticity (MOE) regression based method. Only the data set of Grades E8, E9, and E10 were statistically eligible for the 5 th percentile calculation. The MOR-MOE regression based method

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Determination of Grades and Design Strengths of Machine Graded Lumber in Korea

Cited by 2 publications

References 7 publications

Comparative Study on Various Strength Parameters of Structural Elements Made from Cross-Laminated Timber

Comparative Study on Various Strength Parameters of Structural Elements Made from Cross-Laminated Timber

Analysis of Allowable Stresses of Machine Graded Lumber in Korea

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