การดีดบ้านไม้ 2 ชั้น : กรณีศึกษา เทศบาลตำบลหัวเวียง ตำบลหัวเวียง อำเภอเสนา จังหวัดอยุธยา / พลสิทธิ์ แซ่เฮ้ง = House lifting process : case study of two storey timber house in Hua Wiang municipality Sena district Ayutthaya / Polsit Heng
Flooding occurs regularly in Thailand, affecting many areas and provinces. In 2011, Ayutthaya was one of the provinces submerged for more than five months because it is made up of pan-shaped lowlands serving as drainage basins to prevent floods from reaching Bangkok. Villages in Hua Wiang Municipality, Sena District, were also flooded for a long period of time. To deal with this problem, villagers used a house lifting method, considered to be effective in adjusting quickly to flooding, to increase the level of the basement of their house. This study examined the house lifting processes of two-story timber houses in Hua Wiang Municipality, Sena District, Ayutthaya. The data were collected using field surveys, measurement of the sample houses, and interviews with villagers and house lifting contractors. The house lifting processes were analyzed by making plans and models of the samples before, during, and after the lifting. Analysis was also conducted on issues affecting the standards of lifting, and recommendations were made as to safety standards. The results showed that the lifting techniques of local contractors were not formally taught but resulted from a process of trial and error. Analysis and calculation of structures were made based on instinct and estimation, which were not theory-driven. In terms of the lifting processes, four major stages consisting of 15 minor steps were identified as follows: 1) preparation stage, comprised of background discussions, negotiations, and equipment preparation; 2) pre-lifting stage, comprised of preparation, balance equipment installation, foundation and pile assessment, lifting equipment installation, pile work, and installation of level measurement tools; 3) lifting stage, comprised of lifting styles and lifting steps; and 4) post-lifting stage, comprised of extraction of the existing piles, preparation for piling work, piling, and finishing work. As regards the issues affecting lifting standards, the findings showed that the problems that arose could be classified into two types: concrete problems and abstract problems. These included problems resulting from the construction contracts as well as from the impact of the force during the lifting processes on the structures of the houses. Therefore, such issues were discussed with the local contractors and villagers so as to establish lifting safety standards for everyone involved. It was also found that the villagers were able to carry out house lifting on their own through learning from the local contractors.
