| Title |
An Analysis Study of Domestic and Overseas Wood Structural Design for the Development of Korean Wood Design Standards |
| Authors |
백승엽(Baek, Seung-Youp) ; 오근영(Oh, Keun-Yeong) ; 박금성(Park, Keum-Sung) ; 이상섭(Lee, Sang-Sup) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.12.301 |
| Keywords |
Timber Structure Design Method; Allowable Stress Design; Limit State Design; Lumber; Glued-laminated Timber (GLT) |
| Abstract |
This study compares and analyzes domestic and international timber design standards to examine the differences between the Allowable Stress
Design (ASD) and the Limit State Design (LSD) methods, focusing on glued-laminated Timber (Glulam) beam members. Design calculations
were performed under identical loading and member conditions using Korean Design Standard (KDS), National Design Specification for Wood
Construction (NDS), and Eurocode 5(EC), and the differences in allowable stresses, resistance factor derivation, and the resulting design
strength and safety levels were evaluated. The analysis revealed that KDS provides relatively conservative allowable stresses, leading to higher
stress by Load per design strength ratios (DCR) under the same conditions. In contrast, the NDS produced higher design strengths than EC
due to its reference strength conversion procedure. Moreover, the LSD approach yielded lower DCRs compared to ASD, indicating the
potential for more rational and economical designs. The findings of this study may serve as fundamental reference data supporting the
transition of domestic timber design standards toward an LSD-based approach. |