著者
板谷 敏正 小松 幸夫
出版者
日本建築学会
雑誌
日本建築学会計画系論文集 (ISSN:13404210)
巻号頁・発行日
vol.74, no.643, pp.2063-2069, 2009-09-30 (Released:2010-01-22)
参考文献数
10
被引用文献数
1

The number of enterprises that offer the Property management business as the real estate investment maket for recent years grows up increases. A corporate number that was 100 companies in 2002 reaches about 450 companies according to the investigation in 2008. This research investigates the amount of the business of the property management business in the real estate for the investment and the actual condition of the work contents. And, the structure of corporate profits of the property management business is clarified and the evaluation approach of the business is examined.
著者
板谷 敏正
出版者
[出版者不明]
巻号頁・発行日
2010-02

制度:新 ; 報告番号:甲3028号 ; 学位の種類:博士(工学) ; 授与年月日:2010/2/25 ; 早大学位記番号:新5288
著者
板谷 敏正 円満 隆平
出版者
一般社団法人日本建築学会
雑誌
日本建築学会計画系論文集 = Transactions of AIJ. Journal of architecture, planning and environmental engineering (ISSN:13404210)
巻号頁・発行日
no.633, pp.2453-2459, 2008-11-30
参考文献数
13

This study statistically analyzes the account information of the 1,000 public hospitals all over Japan, and the annual deficits are found in more than half. This study analyzes the relationship between the region, the facilities'scale, the operation situation and the building maintenance expense. After the study of the annual revenue, the capital asset, the depreciation cost and the utility cost per bed, the simple and tentative method of the evaluation of the maintenance cost is proposed.
著者
板谷 敏正 小松 幸夫
出版者
日本建築学会
雑誌
日本建築学会計画系論文集 (ISSN:13404210)
巻号頁・発行日
vol.82, no.741, pp.2939-2948, 2017
被引用文献数
3

&nbsp;In this research we conducted a long-term survey of the actual states of repair construction on buildings. From the investigation, we estimate the most suitable renewal cycle of the parts and equipment in buildings. If we know the appropriate renewal cycles of major parts and equipment in buildings, we can keep buildings in good conditions for long time.<br><br>&nbsp;1) In the first half of the analysis, we surveyed the current situation of repairing works conducted on 668 buildings. Preventative repair works are periodically carried out, however it was understood that the number and the cost of reconstruction after the malfunction takes much more proportion than those of preventative repair works.<br>&nbsp;2) In the middle stage, we researched the reliability and the failure rate of various part and equipment in buildings and estimated long-term tendencies. The rough life span of the building parts and the types of equipment were estimated from the calculated reliability functions. It was made clear that the life spans of them are almost about 30 years. The failure rate gradually increased a little around 15-20 years after completion.<br>&nbsp;3) In the final section, we used the total maintenance costs, calculated by the failure rate and the failure risks, and estimated the most suitable renewal cycle of the parts and equipment in buildings. As a result, it turned out that the failure risk has a large impact on the determination of the optimal renewal cycle. As for the electrical equipment, the suitable optimal cycle is around 20 years when the failure risk increases threefold. It will be around 15 years if the failure risk increases tenfold.