| Title |
A Study on the Estimation Methods of Life Span of Buildings |
| Abstract |
This paper aims to describe the three estimation methods of life span of buildings through assumed data. The data are existing buildings,dismantled buildings, and completed buildings. The three estimation methods of life span of buildings are as follows. 1)First Method: The age distribution of dismantled buildings, with the data of the dismantled buildings and completed buildings were used in the estimation of life span(of buildings). 2)Second Method: Applying the "Method of Cumulative Hazard" by Nelson in the Reliability Theory, with the data of the existing buildings and dismantled buildings used in the estimation of life span. 3)Third Method: The age distribution of existing buildings, with the condition that completed buildings are constant, data of the existing buildings, and completed buildings were used in the estimation of life span. In this paper, The life span is assumed by applying the following four distribution functions: (1)Weibull's Distribution (2)Normal Distribution (3)Logarithmic Normal Distribution, and (4)Gamma Distribution. |