품셈 기반의 생산성 분석에 관한 연구 - 무진동 암 터파기 공법을 중심으로-

Abstract

Non-Vibration rock excavation is most widely used at sites in urban area because of public appeals due to noise, vibration and dust generated when crushing rocks in a construction work and resulting delay or stoppage of works. In case of the current rock excavation, though there is a design unit price based on Standard Estimation of a similar method, when taking account of the form, scale, type and technical aspect of construction which fit the characteristics of sites in Jeju area, the standard for design is insufficient. Accordingly, we carried out this study with an objective to analyze productivity of the work and present the result by investigating Non-Vibration rock excavation sites in Jeju Island through monitoring, and to deduce realistic and efficient construction cost by deducing the basic data required for construction cost estimation.

The summarized process of construction cost estimation is as follows: 1) The scope of study was limited to sewer pipes or vibration-free rock excavation method used at road sites in Jeju Island and rock being crushed is limited to soft rock. 2) Deployed equipment and manpower were deduced through analysis of vibration-free rock excavation method. 3) Productivity was analyzed by each detailed trade in order to estimate bill of quantities. - Basic data for unit price estimation was deduced by measuring and analyzing the work time of each detailed trade in accordance with the work process. 4) The unit prices for material cost, labor cost and equipment cost required for construction of unit quantity were estimated by the unit work method based on Standard Estimation utilizing the data measured and analyzed.