• Journal of the Korea Institute of Building Construction
• /
• v.14 no.3
• /
• pp.195-206
• /
• 2014

The main issue of defect dispute is consulting, reviewing, and finally judging as an arbiter. A defect consulting is represented a defect consulting report, but a business custom and a standard of judgment are different each consultants, and have many problems. This study reviews literature studies and institutional researches, set up a research structure. it has 7 indexes that 5 indexes are formal indexes, and the other are qualitative indexed. As a result of case study, formal indexes are respect on the whole. However, each appraiser has different ideas, and, is expected to delay on fixing a construction lawsuit practice. This study suggests to improve a defect consulting report, it is followed. In formal part, suggested to change configuration is adjusted and integrated similar items. In qualitative part, an evaluation system for appraiser and an education program for engineers is suggested.

• Proceedings of the Korean Institute Of Construction Engineering and Management
• /
• 2008.11a
• /
• pp.513-516
• /
• 2008

The risk in the constructions projects is extremely diverse because there are too many indefinite factors. Therefore, Performance Measurement Baseline(PMB) is needed regularly during the construction process. However, nowdays, the PMB in the constructions projects is for contractors' PMB and Performance Management(PM). Clients have a lot of difficulties to control and manage the projects. Therefore, this paper classifies schedule and cost data of the public apartments houses which is a actual cases into types and then conducts regression analysis and deduces a regression. In addition to this paper establishes the Work Breakdown Structure(WBS) and suggests the PMB for the clients through using that.

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.18 no.6
• /
• pp.105-113
• /
• 2014

Most operating civil structures measure response data continuously by various types of sensors and evaluate their health conditions. Measurement control criteria for such civil structures are usually defined in the first operating stage by experts working at a construction or engineering company. However, a few studies have been carried to examine the adequacy of these measurement control criteria based on the actual measured data. The paper introduces a systematic way of resetting the measurement control criteria for the measured monitoring data based on the statistical aspects of the measured data. The proposed statistical approach has been examined with actually measured time-history data from a bridge structure.

• Korean Journal of Construction Engineering and Management
• /
• v.2 no.3 s.7
• /
• pp.58-66
• /
• 2001

Turnkey project, also called Design-Build project, has been expanding and diversifying its business into the Korean market. However, it has been experiencing numerous difficulties due to a large number of change orders on the public turnkey project. Change order during the construction phase impact on time deliveries, budget and quality on a turnkey project. In preparation for this, the government has to improve the awarding procedure and general conditions for turnkey projects. Contractors should also cooperate with their co-working partners and establish a standardized procedure, which provides change order control for efficient implementation on the construction site.

• Proceedings of the Korean Institute Of Construction Engineering and Management
• /
• autumn
• /
• pp.434-437
• /
• 2003

In apartment project, BCWS is a critical management factor and has a great influence on the success of the project. But due to the characteristics of large apartment complex, there are several problems in making out a time schedule of work as well as production and management of precise bcws from the allocation of resources. In this study, Actual condition survey was executed in terms of the calculation and the management of BCWS. This study propose better solutions for efficient calculation of bcsw through the analysis of the problems and the origins relating to BCWS from a field area.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.4 no.1
• /
• pp.7-13
• /
• 2009

Now society has been extending to ubiquitous information society under the information telecommunication facilities. So it is importance to install and design those for the core business. If there is a serious problem on the information telecommunication infra-facility, it could be seriously effected to the life of the people and the national economy. To prevent the those problems, information telecommunication infra-facilities have been installed/supervised due to the proper telecommunication specialists. In this paper, firstly invested the current supervision system and then proposed how to upgrade information telecommunication services through the proposed supervision system for the telecommunication infra-facilities.

• Journal of the Korea Institute of Building Construction
• /
• v.23 no.6
• /
• pp.851-862
• /
• 2023

This study introduces an objective and systematic framework for prioritizing buildings in the Gamyoung restoration project using a decision-support model. This model integrates evaluation criteria derived from a comprehensive literature review, refined through the Delphi method, and weights assigned via an Analytic Hierarchy Process(AHP) survey. Each building project is scored against these criteria to ascertain its priority for restoration, thereby facilitating informed decision-making for budget allocation in restoration projects. The effectiveness of the decision-support model was validated through a case study and expert consultations, demonstrating its practical utility in formulating concrete restoration project plans.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.31 no.6_1
• /
• pp.463-469
• /
• 2013

In addition to the VRS-RTK service, FKP-RTK service launched recently in Korea however unlike VRS, it is not yet applied to various surveying tasks. VRS system is operated in two way communication over the mobile Internet. When user send rover position data to network RTK server and the server provides correction data to users continuously. It causes to increase communications load and makes delaying or failure in data transmission depends on server capacity and number of concurrent users. In contrast, since FKP system is one way communication system, user only receives correction data and area correction parameters for the selected Continuous Reference Station from the server. Thus, there is no limitation to the number of concurrent users in FKP system and it would be more efficient than VRS system in terms of economic. To this end, we performed FKP-RTK test for Unified Control Points and Urban Control Points where are located at 5 regions in Korea to evaluate the accuracy. As a result, almost of FKP positioning data are in error range of ${\pm}6.2cm$ in horizontal and it would be enough for construction survey such as for earth work in limited except precise structure survey.

• Journal of the Korea Institute of Building Construction
• /
• v.9 no.6
• /
• pp.131-139
• /
• 2009

It is critical to select the appropriate type of tower cranes for the construction of super tall buildings. However the selection is often made based on subjective personal experiences due to the lack of historical and analytical data. As a result, planning mistakes and efficiency errors sometimes occur. This research is to develop a system of hoisting analysis for appropriate tower crane selection and to provide a flexible statistical model based on the Burj Dubai project. In addition, this system hassupporting functions that can estimate the target construction period per floor, and a decision-making construction period computation method which is based on the characteristic of the selected tower cranes.

• Journal of the Korea Institute of Building Construction
• /
• v.24 no.3
• /
• pp.319-329
• /
• 2024

This study examined domestic and international regulations concerning concrete unit weight, along with an evaluation of unit weight in concrete poured on construction sites. Fluctuations in unit weight were observed to correlate with concrete quality issues such as material separation, bleeding, and latency. A word cloud analysis, centered on the concept of concrete quality, further highlighted the significant influence of unit weight. Comparative analysis between Korea and Japan revealed few substantial differences in unit weight management and measurement techniques. However, calculation of concrete unit weight at delivery, using the unit volume mass method, indicated considerable variability among random on-site samples. Notably, the unit weight often exceeded the recommended standard. These findings emphasize the necessity for strict adherence to unit weight standards by all stakeholders involved in concrete production and construction, including ready-mix concrete (REMICON) producers, construction firms, and inspectors. To ensure consistent quality of cast concrete on-site, the establishment of a more comprehensive and practical system is recommended, incorporating measures such as on-site inspections.