知的生産性向上を目指した執務空間における外部の自然環境の導入効果に関する実態調査

摘要

In this study, research using an SAP (Subjective Assessment of workplace Productivity) and a POE (pre- and post-occupancy evaluation) has been carried out before and after relocation to the completed building. The research after relocation was conducted for two years. The purpose of this study was twofold. The first is to gather knowledge by conducting an ongoing survey. The survey has confirmed whether there are changes in the subjective evaluation. The other is to ascertain the existence of differences in the environmental assessment due to the difference in the amount of communication. A survey of the workplace was completed in December 2012. A subjective evaluation of the office before moving was carried out in the summer of 2012. A subjective evaluation of the building after moving was surveyed in the spring, summer, and autumn of 2013 and the spring, summer, and autumn of 2014. The building after the relocation is called the Technical Center. The population of the questionnaire was all of the office workers in the Technical Center. For consecutive research, an evaluation of the office workers who responded during the entire research period has been conducted. Office workers who have personnel changes are outside of the survey. The evaluation was analyzed on the basis of the average value of the survey results. Both the POE and SAP were treated as interval scales. Regarding the comprehensive evaluation of the satisfaction of the POE, a statistically significant difference could be confirmed before relocation compared with the autumn of the second year of 2014 after the relocation. However, there was not a significant difference in the period after the relocation. Regarding the satisfaction of the light environment, a decrease in satisfaction has been confirmed in response to an illuminance reduction operation in the autumn of 2014. Regarding the evaluation of the ease of work, there was a significant difference in the change before and after moving. However the change in each period after relocation was lower. The evaluation indicators for the ease of work are as follows: ease of concentration, ease of relaxation, ease of communication with other people, ease of creative activities, and overall satisfaction. Comparing the SAP of the importance of each period after relocation, the thermal environment and air environment exhibited significant differences versus the summer of 2013. In terms of the ease of communication with other people and workplace satisfaction, an evaluation for the group in which the amount of communication was large has a high tendency for both formal and informal communication. The analysis results for the ease of creative activities showed that an evaluation of a group with a large amount of informal communication was significantly higher. The analysis results about task light lighting time percentage at the time of presence showed that an evaluation of a group with a large amount of informal communication was significantly smaller.%本報では建物の移転に伴う移転前後だけでなく、移転後2年目の知的生産性や施設利用満足度に関するアンケート調査について季節を変えて継続的に行なった。これにより執務者の主観的評価がどのように推移するかについて調査した。その結果、移転後の満足度は調査時期に関係なく安定した評価であった。さらにその結果を利用して執務者をコミュニケーション量の多い群と少ない群に分け、執務環境評価値の分析を実施した。その結果、インフォーマルコミュニケーション量の多い群は物理的環境の内、温熱環境、空気環境、音環境の満足度が高い傾向があった。また創造的な活動のしやすさは、インフォーマルコミュニケーション量が多い群の評価が有意に高かった。