• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2004.05a
• /
• pp.548-553
• /
• 2004

The construction noise has been considered as one of environment pollution and complaints about it have been increasing every year. In order to reduce construction machinery noise, the product noise labeling for construction machinery has been recommended since 1 February 1996 and in the near future the government will convert the recommended product noise labeling to the mandatory product noise labeling fir high noise construction machinery. Therefore, we investigated the noise and vibration level of 302 construction machines and the effect of noise reduction for the soundproof facilities in construction work sites to support the policy of the government. Additionally, we present the basic data that will be used for setting the standard of construction machinery noise and predicting the noise level near construction work sites in environmental impact assessment.

• Journal of the Korean Recycled Construction Resources Institute
• /
• v.2 no.2
• /
• pp.68-75
• /
• 2006

The total production of the smelted copper reaches 450,000 tons per year, and the production of copper-related goods grows year by year owing to the extension of facilities and the development of production techniques. On the other hand, the volume of slag discharges by-produced at the time of copper smelting process is also on trend of increase. The by-produced copper smelting slag amounts to 700,000 tons a year, which is one and half times of the total smelted copper production. Accordingly nobody disagrees that comprehensive researches on how to deal with and how to reuse the accumulated smelting copper slag have to be encouraged. Even though the possible uses of the copper smelting slag have being made on various levels at present as materials for iron powder cement, sand-blasting and fire-proofing rock wool, but a considerable volume of the slag is abandoned as unnecessary by burying or piling up in careless in the open ground.

• Journal of the Korean Professional Engineers Association
• /
• v.34 no.1
• /
• pp.35-43
• /
• 2001

This paper Is described for the maintenance and repair method for the pier structure currently under repair works in the Han river bridges. During the economic growth period from the year 1960 to 1980, our engineer was concentrated only for study of the construction method of bridge. We have neglected the importance for the maintenance & repair method of construction structure. Therefore this paper will give you some ideas of repair and maintenance method.

• Journal of the Korean Society of Safety
• /
• v.29 no.6
• /
• pp.99-103
• /
• 2014

Recently unemployed construction workers are increasing because of construction recession. But the lack of manpower occurs at the same time, in construction sites. So, the excess of workforce supply and demand exists in construction sites. Construction companies have a difficulty in seeking young skilled workers due to this problem. In this study, construction accidents reported by Korean Occupational Safety and Health Agency from 2007 to 2010 were analyzed. It has shown that 50-54, 45-49 and 55-59 year old workers formed 22%, 18% and 17% respectively. This means that old workers becomes a real problem in construction. This research has shown that old workers didn't have much more accidents than young workers, construction accidents related to the employment period of workers.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2018.05a
• /
• pp.116-117
• /
• 2018

The government and the Korea Occupational safety & Health Agency have continuously carried out safety activities such as supervision, inspection, technical guidance and financial support in order to reduce safety accidents at the construction site. However, the number of disasters at construction sites is increasing every year. So analyze the results of the supervision and inspection of the Ministry of Employment and Labor, the projects related to the small-scale construction work of the Safety and Health Corporation, and the technical guidance project of the disaster prevention technology guidance organization. It is also necessary to establish an improvement plan for the disaster reduction of the small-scale construction work site for this project.

• Journal of Climate Change Research
• /
• v.1 no.1
• /
• pp.13-20
• /
• 2010

Recently, the operation of construction equipments have increased by many construction project. So a respectable amount of greenhouse gas is expected from construction equipments. But the greenhouse gas emissions from construction equipment have been high uncertainty due investigation of a lack of activity data and emission factors in Korea. In this study, annual greenhouse gas emissions from construction equipment are estimated by IPCC's Tier 2 and Tier 3 method. These methods require emission factors, fuel consumption, average kilowatts and operating hours. As the results, the nationwide emission from construction equipments by Tier 2 and Tier 3 are calculated as $21,784kton-CO_2eq/year$ and $22,811kton-CO_2eq/year$ in 2008.

• Korean Journal of Heritage: History & Science
• /
• v.45 no.4
• /
• pp.38-53
• /
• 2012

This paper investigated the construction year of 'Jeongnimsa(定林寺)temple in Buyeo(扶餘) through the recent archaeological records. First, the composition of land for the construction of temple was linked with Gwanbukri(官北里) sites which is estimated as palace. The composition of land for the palace was formed at late 6th century. Second, the several furnace sites was discovered under the foundation soil layers for the construction of temple. Reference to the pottery excavated from the previous surface indicates that the workshops having been operated a period of time after the transfer of the capital to Sabi(泗?). These workshops having been operated before the construction of roof-tile buildings which were followed by the large-scale composition of land for the palace at Gwanbukri sites adjacent to the north of 'Jeongnimsa. The pottery, roof-tiles and chinese porcelain which were included in the earth laid on the ground for the construction of temple also indicates that the construction year of temple do not go up to shortly after the transfer of the capital to Sabi. This is related with that wooden pagoda would have been present before stone pagoda and the foundation of the wooden pagoda would have soared into the ground. Last, the building layout of temple is familiar to Iksan(益山) Mireuksa(彌勒寺址) temple site than the temples of Buyeo such as Wangheungsa(王興寺址) temple site. This imply that Jeongnimsa temple was not constructed shortly after the transfer of the capital to Sabi like the opinion of the existing. Jeongnimsa temple was probably constructed at late 6th century when composition of the Sabi city was actively made.

• Journal of the Regional Association of Architectural Institute of Korea
• /
• v.20 no.6
• /
• pp.25-32
• /
• 2018

According to the data released by Korea Occupational Safety & Health Agency, construction workers suffering from falling disaster have been increasing continuously for the last five years, and in fact, small and medium construction companies' falling disaster forms over 97% of all every year. This means that to reduce falling disaster significantly, it is needed to get rid of disaster taking place in small and medium construction companies. Here, this study aims to analyze various causes of falling disaster in small and medium construction companies, examine how those factors are correlated with one another, and suggest how to manage the risk of falling disaster effectively. According to the study results, main factors influencing falling disaster in small and medium construction companies are found as follows: Situational Awareness/Risk Perception, Fatigue/Alertness, Communications, Equipment/Facilities, and Personal Protective Equipment (PPE) in the Direct Level, Management/Supervision, Education/Training, and Planning in the Organizational Level, and Management's Commitment to Safety in the Policy Level.

• International conference on construction engineering and project management
• /
• 2011.02a
• /
• pp.459-467
• /
• 2011

Construction errors can have significant effects on project performance. Yet, any attempt to tackle error should be driven by the ability to understand its archetypal nature. This study aims to analyze a variety of construction errors at the execution stage, in order to develop a comprehensive set of categories that shall provide insights about the effect of different error types on the industry. We investigate a database provided by an authoritative source, which includes a number of 256 construction errors that occurred in the year 2009 in Dubai construction industry. Results from this study reveal that the most common error arose from 'poor workmanship' which accounted for 21% of the total encountered faults. The next most common types arose from the 'usage of impaired materials', followed by the 'deviation from an intended dimension'. These observations infer that the majority of construction errors are driven by workers' lack of skill or competence. Moreover, it suggests that execution-oriented errors are the major cause of faults and accidents rather than design errors.

• International conference on construction engineering and project management
• /
• 2022.06a
• /
• pp.508-515
• /
• 2022

Construction safety education will continue to attract the interests of construction educators, researchers, and industry professionals due to its immense influence on accident reduction and prevention. A well-educated workforce with a thorough understanding of safety requirements and procedures is needed to develop and apply effective safety and health programs as well as devise strategic means of preventing injuries, illnesses, and fatalities on construction projects. The objective of this research is to evaluate construction safety education in the curriculum of construction programs in the United States. An analysis of construction safety courses across accredited construction programs in the U.S. is conducted to synthesize important details and common themes. A nationwide characterization of the safety courses presented followed by an assessment selected a few programs as a pilot study. Critical elements of the courses such as course titles, course year, credit hours, topics covered, and alignment with professional certification or outreach training courses are characterized. Findings from the study reveal the similarities and variations that exist among safety courses taught in different construction programs in the U.S. These findings could result from several influencing factors, which could be the subject of further investigations geared toward improving safety education in construction programs.