Frontiers in Engineering Innovation Research

Fire management in the disaster prevention and mitigation division of lad luang municipality, phra pradaeng district, samut prakan province

Gardkong Pinyo, Phongkultorn Rojviroon — Tue, 01 Oct 2024 00:00:00 +0700

This article aims to study the management of problems, obstacles, and suggest guidelines for the development of fire management in Lat Luang Municipality's public disaster prevention and relief work. Phra Pradaeng District Samut Prakan Province, sample group used in this study The total population was determined to be a sample of 50 people and a sample of 15 people was used to collect qualitative data. The researcher used quantitative and qualitative research processes. and collected data using questionnaires and in-depth interviews. The results of the research found that 1) Fire management of disaster prevention and relief work in Lat Luang Municipality. Phra Pradaeng District Samut Prakan Province as a whole is at a good level. 2) Guidelines for developing fire management of disaster prevention and relief work in Lat Luang Municipality. Phra Pradaeng District Samut Prakan Province: There should be a situation commander with specific knowledge and expertise in direct disaster prevention and relief operations. Including creating awareness for the people to be aware and participate in fire prevention in the community. Promote participation and integration of all sectors in management, including the public and private sectors, the public, volunteer foundations and training centers. And there should be sufficient budget support for all sectors to participate in sustainable disaster prevention and relief.

The attitudes of stakeholders on causes leading to cost overrun in high-rise building projects in Bangkok and surroundings

Vannoeun Som, Kittipong Suweero, Wutthipong Muengnoi — Mon, 09 Dec 2024 00:00:00 +0700

This research aims to study the attitudes of stakeholders towards the causes of cost overrun, analyze the similarities or differences in the attitudes of stakeholders, and group causes of cost overrun in high-rise building projects. A survey using a questionnaire was conducted to collect data from contractors and consultants working on high-rise building construction projects in Bangkok and its surroundings. Simple random sampling was used to distribute a total of 160 questionnaires, and 144 were returned, resulting in a 90% response rate. Data were analyzed using frequency, percentage, relative importance index (RII), t-test, and factor analysis (FA). Results showed that the most important attitude among contractors is that materials costs increased during construction among consultants are mistakes in construction and rework. When analyzing similarities or differences in attitudes, it was found that the most important attitude among all stakeholders was similarities. The total 27 most important causes were grouped into nine categories: construction phase, communication, design, finance, labor, management, estimation, external, and material causes. This study helps to increase knowledge about the various causes of cost overruns in high-rise building construction projects in Bangkok and its surroundings, serving as a guide for management and planning in future construction projects.

Strain field measurements in the tensile tests using digital image correlation

Rittipol Chantarat, Wisit Lelaphatikul — Mon, 09 Dec 2024 00:00:00 +0700

Developments in digital image correlation (DIC) to measure strain fields are very useful for tensile tests because it is a non-contact metrology technique. Many studies use the sub-pixel registration algorithms of DIC to increase measurement accuracy but there are few studies reported on measurement errors. Then, the aim of this paper is to develop the sub-pixel registration algorithm based on Newton-Raphson iteration that is evaluated for its performances by using computer-generated speckle images. The subset sizes for evaluation are small (21´21 pixels), medium (31´31 pixels) and large (41´41 pixels). It is shown that the systematic errors and the random errors of small subsets are greater than other subset sizes. Not only subset sizes but also the speckle sizes play an important role for errors. Next, real tensile tests were performed to investigate the measurement results of DIC compared with a video extensometer. The smoothing technique is used for noise reduction in the strain fields before plotting stress-strain curves. Finally, the results of real tensile tests indicate that DIC can be capable to measure strain fields and Young’s modulus.