A study on the high quality preservation system of Kokera roofing applied for traditional wooden architecture.

Part3 Basic fundamental mechanical property of a Kokera roofing.

Abstract

Kokera roofing, including the origin of the wood was collected, habitat, and tree-ring density when the logging of conditions, but with significant differences related to the fundamental nature of a durable roofing materials, especially artificial tree in the elution of the components of the timber and significant material damage in comparison with natural wood, which results in a wood-term use tend to be shorter than 25 years. In this study, the three, using a wood-cut test of artificial production of various age classes, Akita, resistance to penetration of the needle-like element of the test considering the anisotropy, the characteristic compressive strength and, after understanding the basic nature of the actual Kokera to evaluate the mechanical properties using a plate, put in a bending test, and evaluate the property's expected bent.