改修工事の実態調査

概要

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This paper introduces the survey of renewal works of commercial buildings. Firstly, it introduces the general aspect of 20 commercial buildings. Secondly, it focuses on electrical and mechanical facilities renewal of 27 commercial buildings. The survey includes causes, timing, contents of works and expense for renewal. General aspects obtained are as follows. 1. Causes are classified into 3 types. *Aging *Deterioration of value *Disorder of function 2. Renewal mode comes after 11 years to 15 years after construction. Average years to renewal is about 17 years after construction. 3. Percentage of renewal expense of electrical and mechanical facility to the total renewal expense exceeds 45%. The conclusion concerning electrical and mechanical facility renewal is as follows. 1. Aging is ranked first in causes for renewal. 2. Peak for renewal apears 16 to 20 years after construction. 3. Temporary work, withdrew work and related architectural work hold 16 to 28% in total expense of the renewal.
社団法人日本建築学会の論文
1990-03-30