• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2005.11a
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• pp.121-124
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• 2005

During that time various methods were introduced in the unit planning for the various realization. But the consideration against a variety from the living and functional side still is insufficient. The methods of this study are as follows: 1) Executing domestic instances of being completed above 30 years apartment housing. 2) Case studying the 'Wallgae mansion' in hannam-dong, one of them. Based on the results, this study is analyzed plan variations and the changing points of exterior elevations. The results are as follows: The layout integrated and divided changes composition of units and it is various escaping in the outer wall as the external space being various. Also including the balcony, the spaces with intermediate characteristics much more effect variety of elevations.

• Journal of the Korean housing association
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• v.24 no.5
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• pp.17-26
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• 2013

This study is aimed to investigate the characteristics of the elevations in the contemporary multi-family residential buildings in Paris. The survey was performed by studying 30 buildings which had won the multi-family residential project competitions, held in Paris in 2011. Since 30 buildings in the survey will be constructed in Paris in a couple of years, current trends of the elevations of the multi-family residential buildings can be extracted. Historically and also currently, in France, the multi-family housing has been studied to solve the various social problems; especially in Paris where the historical buildings and the modern and the contemporary buildings stand together in perfect harmony. The uniform elevations of the multi-family residential buildings in Korea, have been consist problems in the country. By studying the building elevations in Paris, the solutions to solve the current problems and to improve the situation, can be found. The study will be discussed in three different categories. First of all, the volume and the mass of building in the survey buildings, will be analyzed. Secondly, the openings in the facade, such as the windows and the balconies of the survey projects, will be analyzed. Finally, the materials and the colors of the facade will be discussed. By analyzing the elevations of the multi-family residential building projects, which had won the competitions, and are soon to be built in Paris, the various experiments and the attempts in building elevations, currently happening in Paris which is mostly known as a Haussmann style city, can be presumed, as well as the willingness of the city to reserve the historic buildings in the city.

• Journal of architectural history
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• v.6 no.2 s.12
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• pp.9-22
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• 1997

The results of analyzing opening types in the rear elevations of ninety-six buddhist temples which would be existence can be summarized as follows ; 1) Opening types in the rear elevations of buddhist temples in the Koryo Dynasty were various as the type of doors and windows, and the type of combining with walls. but the fact had something in common that whole door was the swinging pannel one, and the type of the whole window was the lattice and the mullioned casement one. 2) The type of the lattice windows were disappered and the only type of the mullioned casement windows were put in an apperance in the early period of Cho-sun Dynasty. 3) The type of doors + walls and the type of doors + windows in the rear elevations of buddhist temples of the seventeenth century were absolute. Especially the mullioned casement windows were used mainly in buddhist temple of the type of doors + windows. 4) The type of doors + windows in the rear elevations of buddhist temples of the eighteenth century did not be seen, but types of doors + walls and walls + walls which were much enclosed, were mainly put to use in those.

• Journal of the Korean Institute of Rural Architecture
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• v.10 no.1
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• pp.19-26
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• 2008

1) Lishu village is located in a riverside of an upper Tu-men river. Since an upper tream of Tu-men river is narrow and easy to pilot a boat, early in the past, it facilitated the form of the village near to the North Korea. 2) As for elevation, it consisted of only doors, but as time goes by, windows were made. So windows and doors were appearing much in the elevation. In 1970s', elevations are constructed in various ways; in 1980, attributed to brick housing, the elevations become much more diverse; from 1990, symmetrical elevation was revealed which consists of one door and two windows in each side of a door after 2000, the structure of the housing restored of 1930s' style which contained one window in Jungji and 1970s' style consisting of 3 windows, moreover, many free-style elevations appeared to be commercial use.

• Journal of the Korean housing association
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• v.21 no.1
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• pp.23-30
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• 2010

The purpose of this study is to analyze the elevations of standard rural house designs after the 1990's. Various types of analysis were carried out on a total of 18 different sizes and 50 types of designs with p'yong sizes ranging from 12 to 44. The objects of analysis are the various elevations & the roof types that were supplied in the standard rural house design according to each year 1995 (8 sizes 20 types), 1997 (8 sizes 8 types), 1998 (l size 8 types), 2000 (2 sizes 4 types), 2001 (2 sizes 4 types), and 2004 (3 sizes 6 types). Results from the analysis demonstrate that (1) The gable roof has been used as the roofing type for standard rural house design since 1990. However the roof types of the standard rural house design includes only a few different types of gable roofs and roof materials(most roof types use asphalt shingle). (2) While most front elevations have been altered from asymmetrical to symmetrical most rear elevations have evolved from symmetrical to asymmetrical proportions since the 1990's (3) While siding materials and red-brick were most commonly used the main outer-wall materials prior to 2000, environmentally-friendly materials have been used as outer-wall materials since 2000. (4) In terms of the analysis of outer-wall objects before 2000 the walls were even, yet after 2000 these outer-walls evolved to become concave-convex walls. In other words, the evolution of the outer-wall has included a variety of wall types.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2014.10a
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• pp.933-938
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• 2014

The combined method utilizing airborne LiDAR and GIS data is suggested to extract 3-dimensional hybrid city model including roads and buildings. Combining the two types of data is more efficient to estimate the elevations of various types of roads and buildings than using either LiDAR or GIS data only. This method is particularly useful to model the overlapped roads around the so called spaghetti junction. The preliminary model is constructed from the LiDAR data, which can give wrong information around the overlapped parts. And then, the erratic vertex points are detected by imposing maximum vertical grade allowable on the elevated roads. For the purpose of efficiency, the erratic vertex points are corrected through linear interpolation method. To avoid the erratic treatment of the LiDAR data on the facades of buildings 2 meter inner-buffer zone is proposed to efficiently estimate the height of a building. It is validated by the mean value (=5.1%) of differences between estimated elevations on 2 m inner buffer zone and randomly observed building elevations.

• Ocean Systems Engineering
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• v.12 no.4
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• pp.439-459
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• 2022

This paper describes experimental studies of impact pressure generated by breaking regular waves in shallow water on a vertical cylinder. Experimental work was carried out in a shallow water flume using a 1:30 - scale model of a vertical rigid circular hollow cylinder with a diameter 0.2 m. This represents a monopile for shallow water offshore wind turbines, subjected to depth induced breaking regular waves of frequencies of 0.8 Hz. The experimental setup included a 1 in 10 sloping bed followed by horizontal bed with a constant 0.8 m water depth. To determine the breaking characteristics, plunging breaking waves were generated. Free surface elevations were recorded at different locations between the wave paddle to the cylinder. Wave impact pressures on the cylinder at a number of elevations along its height were measured under breaking regular waves. The depth-induced wave breaking characteristics, impact pressures, and wave run-up during impact for various cylinder locations are presented and discussed.

• Journal of the Korean Society of Safety
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• v.37 no.3
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• pp.1-8
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• 2022

Workplace accidents are common while working at elevations. Thus, various safety measures such as safety handrails and horizontal safety nets are implemented to prevent falls. The minimum safety measure is the lifeline installation. However, because its standards have not been clearly established, it is often misused, resulting in inappropriate knot methods that increase the chance of accidents while working at elevations. Therefore, clarifying the appropriate usage methods or criteria for the various lifelines is required in the field. This study proposed an appropriate installation method by experimentally and numerically evaluating the change in strength according to the fixed knot lifeline method. In addition, three knot methods were specified for each material. The results obtained are expected to contribute to lessening falls through the establishment of lifeline installation standards and the development of appropriate parts.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.24 no.12
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• pp.985-991
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• 2014

The combined method utilizing airborne LiDAR and GIS data is suggested to extract 3-dimensional hybrid city model including roads and buildings. Combining the two types of data is more efficient to estimate the elevations of various types of roads and buildings than using either LiDAR or GIS data only. This method is particularly useful to model the overlapped roads around the so called spaghetti junction. The preliminary model is constructed from the LiDAR data, which can give wrong information around the overlapped parts. And then, the erratic vertex points are detected by imposing maximum vertical grade allowable on the elevated roads. For the purpose of efficiency, the erratic vertex points are corrected through linear interpolation method. To avoid the erratic treatment of the LiDAR data on the facades of buildings 2 meter inner-buffer zone is proposed to efficiently estimate the height of a building. It is validated by the mean value(=5.26 %) of differences between estimated elevations on 2 m inner buffer zone and randomly observed building elevations.

• Journal of Ocean Engineering and Technology
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• v.26 no.6
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• pp.53-58
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• 2012

An experimental study on the hydrodynamic performance of a backward bent duct buoy (BBDB) was performed in a 2D wave tank. The BBDB is one of the promising oscillating water column (OWC) types of floating wave energy converters. Two different corner-shaped BBDBs (sharp-corner and round-corner) were used to measure the maximum chamber surface elevations and body motions for various incident wave conditions, and their hydrodynamic characteristics were compared. In order to investigate the effect of the pneumatic pressure inside the chamber, the heave and pitch angle interacted with elevations were compared for both open chamber and partially open chamber BBDBs. From the comparison study, the deviation in the chamber surface elevations between the two shapes of BBDBs was found to be significant near the resonance period, which may be explained by viscous energy loss. It was also found that the pneumatic pressure noticeably affected the chamber surface elevation and body motions.