Basic Study on Term of Warranty Liability for Water Supply, Drainage, and Sanitation Arrangement Work Defect in Apartment Building
The defect lawsuit of the apartment which is the representative residential style of Korea continues and becomes a social problem. In the defect lawsuit, the term of warranty liability is a period that can demand the defect repair according to defect occurrence, and the exclusion period of the exercise of rights. However, the term of warranty liability stipulated in relevant laws such as Enforcement Decree of the Housing Act is being changed arbitrarily, without any established grounds. Therefore, a reasonable standard for establishing the term of warranty liability is required. In this study, the defects of water supply, drainage and sanitation arrangement work were studied. As a result of analyzing the number of defect occurrence in the apartment, it was shown that the defects in water supply, drainage and sanitation arrangement work occurred more than 80% in the 1st ∼ 2nd year after completion. However, the occurrence of defects from the 3rd year was extremely slight. On the other hand, it was confirmed that the defect occurrence continued until fairly late point of time as the end point of time of the defects was in the 7th to 9th years.
Analysis on Legal Issue of Lawsuits and Subjective Judgment on Defects in Apartment Building
Lawsuits related to defects in apartment buildings involve a range of legal issues, based on which the current subjective judgment system has been established. This study aims to organize the judgment system by stage of lawsuit from a legal perspective by reviewing the factors dealt with in precedent research. The main issues at hand include assignment of obligation, the day on which the computation of exclusion period begins and the day on which the defect repair is completed. The rationality of the current subjective judgment system could be determined by reviewing the recent cases. Based on the findings of the review, the following are suggestions for improvements and complements of the system. First, the process of assignment of obligation should be systemized, and the guarantee insurance system that provides a warranty deed should be improved as well. In addition, improvements and systemization should be made to clarify the responsibilities for any defect arising from the agreements that are not stipulated on the contract, computation of abatement rate of compensation and the system by which the responsibility for the defects is completed when residents acquire ownership from rental status.
Preparation of hydrophilic poly(vinyl butyral) hollow fiber membrane via thermally induced phase separation
Abstract Hydrophilic microporous hollow fiber membranes were prepared via thermally induced phase separation (TIPS). Poly(vinyl butyral) (PVB) and three kinds of polyethylene glycols (PEG) with the molecular weight of 200, 400 and 600 were used as polymer and diluents. In all cases, liquid–liquid (L–L) phase separation occurred and asymmetric cellular structures with the smaller pores at the outer surface were obtained. The properties of membranes such as pore size, water permeability, solute rejection and intensity were investigated by changing molecular weight of PEG, concentration of PVB, composition of the bath and air gap distance. The smaller molecular weight of PEG, the more PEG in the bath and the shorter air gap distance resulted in the higher water permeability, the lower solute rejection property and the lower mechanical strength.