• Title/Summary/Keyword: 실투입비용

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Comparison of Labor Inputs from Standard Quantities per Unit and Actual Quantities in Apartment Reinforced Concrete Work (공동주택 골조공사의 표준품셈 노무량과 실투입 노무량 비교)

  • Jeon, Sang-Hoon;Koo, Kyo-Jin
    • Korean Journal of Construction Engineering and Management
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    • v.9 no.2
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    • pp.182-189
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    • 2008
  • In private and public construction works, cost estimation and site productivity management are based on designed labor quantities calculated by the Standard Quantities per Unit (SQU). The designed labor quantities are regarded as the basis for insurance costs and safety and environmental costs and also affect the progress measurement of construction works. Even though the designed labor quantities from the SQU has been considered to be different from actual labor quantities put to construction works, there is no research that empirically analyzes the statistical differences. This study analyzes actual labor quantities of form workers, steel-bar fabricators, concrete pourers in reinforced concrete works of the 43 apartment projects, and compares the actual labor quantities to labor quantities from the SQU. It goes further to scrutinize the critical reasons underlying the differences through a survey on 65 practitioners and interviews with 32 site managers and supervisors. The regression models of labor quantities of the apartment concrete work produced by the present study will contribute to reasonable construction contracts based on the past actual costs and practical site management by the actual labor quantities.

Study on Project Management Method of Naval Ship Building in Monetary Fluctuations (금융환경 변동 하에서 실적가치 기법에 의한 함정건조사업 관리 방안 연구)

  • Kim, Hyung-Man;Seo, Guan-Hee;Kim, Soo-Young
    • Journal of the Society of Naval Architects of Korea
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    • v.42 no.5 s.143
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    • pp.542-549
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    • 2005
  • Naval ships are complex weapon systems which play the integrated performance by system integration of many kinds of weapon systems and their leading ships are usually not disposed after test and evaluation but militarised. Then, strict project management is required for naval ship building projects by identifying problems early and by taking prefer measures in time against unexpected situations encountered in the process of the projects. EVMS is a project management system which can manage the schedule and the budget of a project concurrently and estimate the project's time duration and the cost at project completion. In this paper, the applicability and usefulness of WMS is studied for a assumed navai ship building project, in the environment of monetary fluctuations such as price index, wage increase rate and exchange rate.

Comparison between Labor Inputs by Quantity per Unit Method and by Actual Data Method in the Apartment Housing Construction Work - Focusing on Masonry Plaster Waterproofing Tile Labors - (공동주택 건설공사의 표준품셈과 실투입 노무량 비교 분석 - 미장, 방수, 조적, 타일공사를 중심으로 -)

  • Jeon, SangHoon;Koo, Kyo-Jin
    • Korean Journal of Construction Engineering and Management
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    • v.16 no.1
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    • pp.110-118
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    • 2015
  • The standard production unit system is the most basic element in our country construction. However, this standard production unit system shows a large difference in the actual amount of labor input for works at the Apartment housing construction, Therefore, it may be a reasonable alternative to estimate the cost of construction by historical cost data, works will be calculated the cost of labor must determine the exact amount and It is necessary to determine the exact amount of labor input for the construction progress management. This study examines the results of comparing the standard production unit system and the actual amount of labor counting in apartment housing construction was completed in the metropolitan area since 2000, the following results were obtained. the actual amount of labor input are looked for 1.184person/1000 of masonary, $0.084persons/m^2$ of plaster, $0.039persons/m^2$ of Waterproofing, $0.059persons/m^2$ of tile at the Apartment housing construction. in the actual amount of labor counting Compared with standard production unit system, masonry ratio of 59.8%, plaster ratio of 41.3%, waterproofing ratio of 31.5%, tile ratio of 34.3% and The labor rate in the works was the lowest in the plaster. was relatively high in the masonary. Therefore, the amount of labor country apartment housing construction is preferably calculated on historical cost data. But it seems that the amount of labor necessary complement ongoing close enough to the actual standard production unit system a major variable in construction management.

Comparison of Predicted Maintenance Costs and Actual Maintenance Cost of Military Facilities - Focused on BTL Project - (병영 시설물 수선유지비용 예산대비 실투입 비교에 관한 연구 - BTL사업 중심으로 -)

  • Lee, Don-Soo;Kim, Gwang-Hee
    • Journal of the Korea Institute of Building Construction
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    • v.17 no.5
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    • pp.473-481
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    • 2017
  • With the barracks modernization project, the Ministry of National Defense has been operating 60 projects of the 75 that have been announced. It was difficult to investigate and analyze the data in the past because data could not be obtained while it was much easier to do that since data can be obtained from private companies. With the aim of increasing the usability of the facilities, the objective of this study is to present a reasonable alternative for repair and maintenance costs by investigating and analyzing the budget and the actual expenses of repair and maintenance of military facilities for the past 3 to 5 years, and then identifying the problems with these. To accomplish this, a theoretical review of previous studies and legal grounds related to repair and maintenance costs was performed, and data on the estimates and the actual expenses data used in BTL projects carried out by private companies were analyzed. First, one of the problems was that there are some items omitted, including consumables, and these items should be included in order to secure their budget. Second, in terms of the items for divided payments, two improvements had been presented: a short-term payment plan for the operation period of 3 to 5 years and a long-term payment plan for an additional and complemented period other than the operation period. The repair and maintenance costs should be further studied at the point of time in a future when the actual data on the costs and operation period of military facilities can be secured. This study is expected to serve as empirical data that will form the basis for a reasonable calculation of the construction cost for military facilities.