Abstract
Abstract Precast Concrete (PC) construction method can be the one that is suitable for long-life housing due to its merit inrespect of maintenance and durability based on crack-free from mass production with indirect construction cost-saving-effect due to shortening construction period comparing to the conventional construction method, but it has the problemthat causes the raise of direction construction costs. So, this study analyzed its economic feasibility of PC method whosemaintenance and durability are excellent for underground parking lot of apartment house for accomplishing cost-savinglong-life housing by applying the various structural system. In evaluation of unit module structural system, two-way PCsystem requires 10 to 28% more costs for frame work than RC rigid frames, and, one-way PC system 98~112%.Although it varies depending on the method, the costs are similar to RC rigid frame structure, provided a proper methodis adopted. Also, Model 11, which was most economical in the evaluation, was applied to an real parking lot and about2 to 6% of construction costs was reduced than RC rigid frames. This seems to be because, although PC system has ahigher production cost, introduction of P.S (prestress) reduces member depth and, therefore, height, as well as thenumber of members per unit module.Keywords: Long-Life Housing, Underground Parking Lot, Precast Concrete, Economic Feasibility Analysis주요어: 장수명주택 , 지하주차장 , PC공법, 경제성
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