Evaluation of Insect Attack in Wooden Historic Buildings Using Drill Resistance Method:Part 2 A Case Study on Sambutsu-do of Rinnohji

The feasibility of drill resistance method using RESISTGRAPH apparatus to evaluate insect attack in wooden structural members of historic buildings was investigated. Based on the results presented in a previous report, the drill resistance method was applied to the posts of Sambutsudo of Rinnohji. It was revealed that characteristic patterns of the change in drill resistance were obtained, both for the sound part of the posts and the part attacked by insects. The results and their interpretation discussed are supported by the results of visual inspection of the posts. Although it takes relatively more time and cost, the distribution of insect attack can be clarified by applying this method to the entire structure of a building.