Creep Properties of Walikukun (Schouthenia ovata) Timber Beams


  • Ali Awaludin Research Group of Innovative Sustainable Infrastructure Materials and Construction Technologies, Department of Civil and Environmental Engineering, Gadjah Mada University, Grafika Street # 2, UGM campus, Sleman, Yogyakarta
  • Ngudiyono Ngudiyono Department of Civil Engineering, Faculty of Engineering, Mataram University, Majapahit street # 62, Nusa Tenggara Barat
  • Achmad Basuki SMARTWood Research Group, Department of Civil Engineering, Faculty of Engineering, Sebelas Maret University, Ir Sutami street # 36A, Surakarta



Creep, four solid element creep model, Walikukun timber, rheological model, phenomenological model


This study presents an evaluation of creep constants of Walikukun (Schouthenia
ovata) timber beams when rheological model of four solid elements, which is obtained by
assembling Kelvin and Maxwell bodies in parallel configuration, was adopted. Creep behavior
obtained by this method was further discussed and compared with creep behavior developed
using phenomenological model of the previous study. Creep data of previous study was deformation
measurement of Walikukun beams having cross-section of 15 mm by 20 mm with a clear
span of 550 mm loaded for three weeks period under two different room conditions: with and
without Air Conditioner. Creep behavior given by both four solid elements model and phenomenological
(in this case are power functions) had good agreement during the period of creep
measurement, but they give different prediction of creep factor beyond this period. The power
function of phenomenological model could give a reasonable creep prediction, while for the four
solid elements model a necessary modification is required to adjust its long-term creep behavior.


Lumantarna, B., Steven, and Budiono, D., Pengaruh Rangkak (creep) pada Bangunan Tinggi, Dimensi Teknik Sipil (in Indonesian), 5(1), 2003, pp. 29–38. [CrossRef]

ASTM D6815, Standard Specification for Evaluation of Duration of Load and Creep Effect of Wood and Wood-Based Product, Annual Book of ASTM Standard, West Conshojocken, PA, 2002. [CrossRef]

Bodig, J. and Jayne, B.A., Mechanical of Wood and Wood Composites, Kriger Publishing Company, Malabar Florida, 1982. [CrossRef]

Holzer, S.M., Loferski, J.R., and Dillard, D.A., A Review of Creep in Wood: Concepts Relevant to Develop Long-Term Behavior Predictions for Wood Structures, Wood and Fiber Science, 21(4), 1989, pp. 376-392. [CrossRef]

Findley, M.N., Lai, J.S., and Onaran, K., Creep and Relaxation of Nonlinear Viscoelastic Material with Introduction to Linear Viscoelastic, Dover Publication Inc., New York, 1989. [CrossRef]

Ma, X., Wang, G., Jiang, Z., Xian, Y., and Li, H., Comparison of Bending Creep Behavior of Bamboo-Based Composites Manufactured by Two Types of Stacking Sequences, Bio Resources, 9(3), 2014, pp. 5461-5472. [CrossRef]

Shen, Y. and Gupta, R., Evaluation of Creep Behavior of Structural Lumber in a Natural Environment, Forest Product Journal, 47(1), 1997, pp. 89-96. [CrossRef]

Amino, Y., Bamboo-Precocious Wood Composite Beams: Bending Capacity for Long-Term Loading, Journal Bamboo and Rattan, 4(1), 2005, pp. 55-70. [CrossRef]

Fidley, K.J., Tang, R.C., and Soltis, L.A., Creep Behavior Model for Structural Lumber, Journal of Structural Engineering, ASCE, 118(8), 1992, pp. 2261–2277. [CrossRef]

Ma, Y., Li, X., Deng, B., and Luo, Y., Basic Study on Creep Properties of Eucalyptus Wood, Advanced Material Research, 911, 2014, pp. 232-237. [CrossRef]

Erlitasari, R., The Creep Behaviour of Walikukun Wood (Schouthenia ovata Korth), Under-Graduate Thesis, Department of Civil and Environmental Engineering, Gadjah Mada University, Yogyakarta, 2015. [CrossRef]

Barati, R., Application of Excel Solver for Parameter Estimation of the Nonlinear Muskingum Models, KSCE Journal of Civil Engineering, 17(5), 2013, pp. 1139-1148. [CrossRef]




How to Cite

Awaludin, A., Ngudiyono, N., & Basuki, A. (2016). Creep Properties of Walikukun (Schouthenia ovata) Timber Beams. Civil Engineering Dimension, 18(2), 78-84.

Most read articles by the same author(s)